Class: Mbeditor::EditorsController

Inherits:
ApplicationController show all
Defined in:
app/controllers/mbeditor/editors_controller.rb

Constant Summary collapse

IMAGE_EXTENSIONS = 
%w[png jpg jpeg gif svg ico webp bmp avif].freeze
RUBY_DEFS_WARM_MUTEX = 
Mutex.new
TOTAL_LINES_CACHE_MAX = 
50
TOTAL_LINES_MUTEX = 
Mutex.new
GIT_STATUS_TTL = 
3
GIT_STATUS_MUTEX = 
Mutex.new
IMPORT_MAX_FILES =

Kept below Rack's multipart_part_limit (128 file parts in Rack 3.2), which is enforced during param parsing — outside the action, where this controller's rescue cannot turn it into a clean 422. A batch larger than the Rack limit raises MultipartPartLimitError and surfaces as a 500, so this guard is only reachable if it trips first.

100
IMPORT_MAX_TOTAL_BYTES = 
50 * 1024 * 1024
STATE_MAX_BYTES = 
EditorStateService::STATE_MAX_BYTES
HISTORY_MAX_OPS = 
10_000
HISTORY_COMPACT_TARGET = 
5_000
RUBY_LSP_METHODS =

The whitelist is the trust boundary: only these reach the language server. Symbol values are handled locally instead of being forwarded; they need no path, no document and no running process.

The first four have bespoke translators producing 1-based, editor-shaped payloads, kept for their existing consumers. Everything added since is in RUBY_LSP_RAW below: raw LSP JSON, 0-based, through one URI sanitizer. Eight more hand-written translators would be ~200 lines restating shapes Monaco already understands.

{
  "definition"       => "textDocument/definition",
  "hover"            => "textDocument/hover",
  "completion"       => "textDocument/completion",
  "diagnostics"      => "textDocument/diagnostic",
  "references"       => "textDocument/references",
  "document_highlight" => "textDocument/documentHighlight",
  "document_symbol"  => "textDocument/documentSymbol",
  "folding_range"    => "textDocument/foldingRange",
  "formatting"       => "textDocument/formatting",
  "signature_help"   => "textDocument/signatureHelp",
  "selection_range"  => "textDocument/selectionRange",
  "prepare_rename"   => "textDocument/prepareRename",
  "health"           => :health,
  "restart"          => :restart
}.freeze
RUBY_LSP_RAW =

Passed through as raw LSP JSON rather than translated. Ranges stay 0-based on the wire and are converted by one helper at the Monaco provider.

%w[
  references document_highlight document_symbol folding_range
  formatting signature_help selection_range prepare_rename
].freeze
RUBY_LSP_POSITIONLESS =

Whole-document requests, which carry no cursor position.

%w[
  textDocument/diagnostic textDocument/documentSymbol textDocument/foldingRange
  textDocument/formatting
].freeze
RUBY_LSP_EXTRA_PARAMS =

Extra params per method, merged into the request alongside the position. Values may be a hash or a callable taking the params hash.

{
  "textDocument/references" => { context: { includeDeclaration: true } },
  # selectionRange takes a list of positions, not the single `position` the
  # positional branch supplies, so it builds its own from the same params.
  "textDocument/selectionRange" => lambda { |p|
    { positions: [{ line: [p[:line].to_i - 1, 0].max,
                    character: [p[:character].to_i - 1, 0].max }] }
  },
  "textDocument/formatting" => lambda { |p|
    { options: { tabSize: (p[:tab_size].presence || 2).to_i,
                 insertSpaces: p[:insert_spaces].to_s != "false" } }
  }
}.freeze
RUBY_LSP_DIAGNOSTICS_TIMEOUT =

RuboCop's first run inside a freshly booted ruby-lsp is far slower than a hover/definition lookup, so the requests that go through RuboCop — diagnostics and formatting — get their own budget.

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RUBY_LSP_RUBOCOP_METHODS = 
%w[textDocument/diagnostic textDocument/formatting].freeze
RUBY_CONSTANT_PATH =

ruby-lsp renames constants only (Rename#perform locates ConstantReadNode | ConstantPathNode | ConstantPathTargetNode and nothing else), so anything that isn't a constant path is rejected before we ask.

/\A[A-Z][A-Za-z0-9_]*(::[A-Z][A-Za-z0-9_]*)*\z/
RUBY_LSP_RENAME_TIMEOUT =

Rename#collect_text_edits globs **/*.rb and Prism-parses every hit, which is seconds on a large app rather than the usual milliseconds.

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Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.cached_git_status(root) ⇒ Object

git_status is polled every 5s by every open tab and costs two git subprocesses. A 3s TTL collapses the duplicates while staying inside one poll interval; any mutation drops it outright (broadcast_files_changed).



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# File 'app/controllers/mbeditor/editors_controller.rb', line 55

def cached_git_status(root)
  now = Process.clock_gettime(Process::CLOCK_MONOTONIC)
  GIT_STATUS_MUTEX.synchronize do
    entry = (@git_status_cache ||= {})[root]
    return entry[:value] if entry && (now - entry[:ts]) < GIT_STATUS_TTL
  end

  value = yield
  GIT_STATUS_MUTEX.synchronize do
    (@git_status_cache ||= {})[root] = { ts: now, value: value }
  end
  value
end

.cached_total_lines(path, mtime) ⇒ Object

Small (path, mtime) => total-line-count cache so windowed reads of big files don't re-read the whole file just to report total_lines.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 36

def cached_total_lines(path, mtime)
  TOTAL_LINES_MUTEX.synchronize do
    entry = (@total_lines_cache ||= {})[path]
    entry && entry[:mtime] == mtime ? entry[:total] : nil
  end
end

.invalidate_git_status(root) ⇒ Object 



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# File 'app/controllers/mbeditor/editors_controller.rb', line 69

def invalidate_git_status(root)
  GIT_STATUS_MUTEX.synchronize { (@git_status_cache ||= {}).delete(root) }
  nil
end

.store_total_lines(path, mtime, total) ⇒ Object 



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# File 'app/controllers/mbeditor/editors_controller.rb', line 43

def store_total_lines(path, mtime, total)
  TOTAL_LINES_MUTEX.synchronize do
    cache = (@total_lines_cache ||= {})
    cache.delete(path)
    cache[path] = { mtime: mtime, total: total }
    cache.delete(cache.keys.first) while cache.length > TOTAL_LINES_CACHE_MAX
  end
end

Instance Method Details

#branch_state ⇒ Object

GET /mbeditor/branch_state?branch=... — load per-branch pane state



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# File 'app/controllers/mbeditor/editors_controller.rb', line 156

def branch_state
  branch = sanitize_branch_name(params[:branch])
  return render json: {}, status: :bad_request unless branch

  render json: editor_state_service.read_branch_state(branch)
rescue StandardError
  render json: {}
end

#changelog ⇒ Object

GET /mbeditor/changelog — serves the gem's CHANGELOG.md for the in-editor changelog tab.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 1213

def changelog
  path = Mbeditor::Engine.root.join("CHANGELOG.md")
  content = path.exist? ? path.read(encoding: "utf-8") : ""
  render json: { content: content, version: Mbeditor::VERSION }
end

#clear_exceptions ⇒ Object

DELETE /mbeditor/exceptions — clear the recorded exceptions.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 781

def clear_exceptions
  ExceptionLog.clear!
  render json: { ok: true }
end

#client_config ⇒ Object

GET /mbeditor/client_config — returns client-side configuration values



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# File 'app/controllers/mbeditor/editors_controller.rb', line 1182

def client_config
  render json: {
    related_files_custom_paths: Array(Mbeditor.configuration.related_files_custom_paths),
    user_name: resolved_user_name
  }
end

#create_dir ⇒ Object

POST /mbeditor/create_dir — create directory recursively



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# File 'app/controllers/mbeditor/editors_controller.rb', line 408

def create_dir
  path = resolve_path(params[:path])
  return render json: { error: "Forbidden" }, status: :forbidden unless path
  return render json: { error: "Cannot create directory in this path" }, status: :forbidden if path_blocked_for_operations?(path)

  result = FileOperationService.new(workspace_root).create_dir(path)
  broadcast_files_changed
  render json: result
rescue FileOperationService::FileExistsError
  render json: { error: "Path already exists" }, status: :unprocessable_content
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#create_file ⇒ Object

POST /mbeditor/create_file — create file and parent directories if needed



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# File 'app/controllers/mbeditor/editors_controller.rb', line 391

def create_file
  path = resolve_path(params[:path])
  return render json: { error: "Forbidden" }, status: :forbidden unless path
  return render json: { error: "Cannot create file in this path" }, status: :forbidden if path_blocked_for_operations?(path)

  result = FileOperationService.new(workspace_root).create_file(path, params[:code].to_s)
  broadcast_files_changed([path])
  render json: result
rescue FileOperationService::FileExistsError
  render json: { error: "File already exists" }, status: :unprocessable_content
rescue FileOperationService::FileTooLargeError
  render_file_too_large(params[:code].to_s.bytesize)
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#definition ⇒ Object

GET /mbeditor/definition?symbol=...&language=... Looks up method definitions in workspace source files (Ripper) and in the Ruby/gem documentation via ri. Workspace results appear first.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 492

def definition
  symbol = params[:symbol].to_s.strip
  language = params[:language].to_s.strip

  return render json: { results: [] } if symbol.blank?
  return render json: { error: "Invalid symbol" }, status: :bad_request unless symbol.match?(/\A[a-zA-Z_]\w{0,59}[!?]?\z/)

  results = case language
            when "ruby"
              excl_patterns = Array(Mbeditor.configuration.excluded_paths).map(&:to_s).reject(&:blank?)
              workspace = RubyDefinitionService.call(
                workspace_root,
                symbol,
                excluded_paths: excl_patterns,
                included_dirs:  ruby_def_include_dirs
              )
              ri = RiDefinitionService.call(symbol)
              workspace + ri
            else
              []
            end

  render json: { results: results }
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#destroy_path ⇒ Object

DELETE /mbeditor/delete — remove file or directory



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# File 'app/controllers/mbeditor/editors_controller.rb', line 477

def destroy_path
  path = resolve_path(params[:path])
  return render json: { error: "Forbidden" }, status: :forbidden unless path
  return render json: { error: "Cannot delete this path" }, status: :forbidden if File.exist?(path) && path_blocked_for_operations?(path)

  result = FileOperationService.new(workspace_root).destroy_path(path)
  broadcast_files_changed([path]) if result.key?(:type)
  render json: result
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#exceptions ⇒ Object

GET /mbeditor/exceptions — recorded host-app exceptions, newest first.

The cable push is the live path; this seeds the panel on load and covers hosts where ActionCable isn't available.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 775

def exceptions
  render json: { exceptions: ExceptionLog.entries,
                 enabled: Mbeditor.configuration.exception_capture != false }
end

#file_history ⇒ Object

GET /mbeditor/file_history?branch=X&path=Y



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# File 'app/controllers/mbeditor/editors_controller.rb', line 206

def file_history
  branch = sanitize_branch_name(params[:branch])
  return render json: {}, status: :bad_request unless branch

  path = resolve_path(params[:path])
  return render json: {}, status: :forbidden unless path

  rel  = relative_path(path)
  hist = history_file_path(branch, rel)
  return render json: {} unless File.exist?(hist)

  data = JSON.parse(File.read(hist))

  if data['t']
    age = Time.now.utc - Time.parse(data['t'])
    if age > 7 * 24 * 3600
      FileUtils.rm_f(hist)
      return render json: {}
    end
  end

  render json: { base: data['base'], ops: data['ops'] || [] }
rescue JSON::ParserError
  FileUtils.rm_f(hist) rescue nil
  render json: {}
rescue StandardError
  render json: {}
end

#file_includes ⇒ Object

GET /mbeditor/file_includes?path=app/models/article.rb Returns included/extended/prepended module names and their methods.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 812

def file_includes
  path = resolve_path(params[:path])
  return render json: { error: "Forbidden" }, status: :forbidden unless path

  excl_patterns = Array(Mbeditor.configuration.excluded_paths).map(&:to_s).reject(&:blank?)
  module_names = RubyDefinitionService.includes_in_file(path)
  includes = module_names.filter_map do |mod_name|
    mod_file = RubyDefinitionService.module_defined_in(
      workspace_root, mod_name,
      excluded_paths: excl_patterns,
      included_dirs:  ruby_def_include_dirs
    )
    next unless mod_file

    defs    = RubyDefinitionService.defs_in_file(mod_file)
    methods = defs.flat_map do |method_name, entries|
      entries.map { |e| { name: method_name, line: e[:line], signature: e[:signature] } }
    end
    { name: mod_name, file: relative_path(mod_file), methods: methods }
  end
  render json: { includes: includes }
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#files ⇒ Object

GET /mbeditor/files — recursive file tree refresh=1 means "my view of the workspace is stale, drop your caches" — the client sends it after an external git checkout, which rewrites the tree without going through any mutation endpoint, so nothing here knows to invalidate. Without it the 15s tree TTL kept serving the old branch's file list, and the search cache the old branch's hits.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 121

def files
  if params[:refresh].present?
    FileTreeService.invalidate(workspace_root.to_s)
    SearchReplaceService.invalidate_cache(workspace_root.to_s)
  end
  tree = FileTreeService.cached_json(workspace_root)
  render json: tree[:body] if stale?(etag: tree[:digest], public: false)
end

#format_file ⇒ Object

POST /mbeditor/format — rubocop -A on buffer content; returns corrected content WITHOUT saving to disk

Accepts the current buffer content as code and formats it using a workspace-local tempfile so that RuboCop's config discovery walks up from the source file's own directory (finds the host app's .rubocop.yml). Does NOT write the result back to the original file — the frontend marks the tab dirty and lets the user decide when to save.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 1247

def format_file
  path = resolve_path(params[:path])
  return render json: { error: "Forbidden" }, status: :forbidden unless path

  code = params[:code].to_s
  return render json: { error: "code required" }, status: :unprocessable_content if code.empty?

  ext = File.extname(File.basename(path))
  Tempfile.create([".mbeditor_fmt_", ext], File.dirname(path)) do |f|
    f.write(code)
    f.flush
    tmpfile = f.path

    cmd = AvailabilityProbe.rubocop_command(workspace_root) + [AvailabilityProbe.rubocop_server_flag(workspace_root), "-A", "--no-color", tmpfile]
    env = { 'RUBOCOP_CACHE_ROOT' => File.join(Dir.tmpdir, 'rubocop') }
    status = run_lint_command(env, cmd)[:exit_status]
    unless status.success? || status.exitstatus == 1
      return render json: { ok: false, content: code }
    end

    corrected = File.read(tmpfile, encoding: "UTF-8", invalid: :replace, undef: :replace)
    render json: { ok: true, content: corrected }
  end
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#git_info ⇒ Object

GET /mbeditor/git_info



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# File 'app/controllers/mbeditor/editors_controller.rb', line 917

def git_info
  render json: GitInfoService.call(workspace_root.to_s)
end

#git_status ⇒ Object

GET /mbeditor/git_status



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# File 'app/controllers/mbeditor/editors_controller.rb', line 903

def git_status
  root = workspace_root.to_s
  payload = self.class.cached_git_status(root) do
    output, status = GitService.run_git(root, "status", "--porcelain")
    { ok: status.success?,
      files: GitService.parse_porcelain_status(output),
      branch: GitService.current_branch(root) || "" }
  end
  render json: payload
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#import ⇒ Object

POST /mbeditor/import — write files dragged in from outside the browser.

Multipart: files carries the bodies, paths the parallel list of workspace-relative targets, on_conflict one of ask/overwrite/rename. A structurally invalid batch is a 422; per-entry problems come back in the :errors array so one bad path never sinks the whole drop.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 428

def import
  files = Array(params[:files])
  paths = Array(params[:paths]).map(&:to_s)
  mode  = params[:on_conflict].presence || "ask"

  error = import_batch_error(files, paths, mode)
  return render json: { error: error }, status: :unprocessable_content if error

  entries = []
  errors  = []
  files.each_with_index do |file, i|
    full = resolve_path(paths[i])
    if full.nil? || path_blocked_for_operations?(full)
      errors << { path: paths[i], error: "Cannot write to this path" }
    else
      entries << { target_path: full, io: file }
    end
  end

  result = FileImportService.new(workspace_root).import(entries, on_conflict: mode.to_sym)
  result[:errors] = errors + result[:errors]

  written = result[:imported].map { |e| File.join(workspace_root.to_s, e[:path]) }
  broadcast_files_changed(written) if written.any?

  render json: result
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#index ⇒ Object

GET /mbeditor — renders the IDE shell



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# File 'app/controllers/mbeditor/editors_controller.rb', line 76

def index
  render layout: "mbeditor/application"
end

#js_definition ⇒ Object

GET /mbeditor/js_definition?symbol=ReactWindow Searches workspace JS/JSX/TS/TSX files for global definitions of the named symbol.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 521

def js_definition
  symbol = params[:symbol].to_s.strip
  return render json: { results: [] } if symbol.blank?
  return render json: { error: "Invalid symbol" }, status: :bad_request \
    unless symbol.match?(/\A[a-zA-Z_$][a-zA-Z0-9_$]{0,59}\z/)

  parent = params[:parent].to_s.strip
  if parent.present?
    return render json: { error: "Invalid parent" }, status: :bad_request \
      unless parent.match?(/\A[a-zA-Z_$][a-zA-Z0-9_$]{0,59}\z/)
  else
    parent = nil
  end

  results = JsDefinitionService.new(symbol, workspace_root, parent: parent).call
  render json: { results: results }
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#js_globals ⇒ Object

GET /mbeditor/js_globals All top-level JS declarations across the workspace (the Sprockets global scope), plus config.js_global_identifiers. The editor declares these as ambient globals so cross-file component references don't produce "Cannot find name" diagnostics.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 560

def js_globals
  render json: JsGlobalsService.call(workspace_root)
rescue StandardError => e
  render json: { ok: false, error: e.message }, status: :unprocessable_content
end

#js_members ⇒ Object

GET /mbeditor/js_members?symbol=ReactWindow Searches workspace JS/JSX/TS/TSX files for properties/methods of the named global.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 543

def js_members
  symbol = params[:symbol].to_s.strip
  return render json: { members: [] } if symbol.blank?
  return render json: { error: "Invalid symbol" }, status: :bad_request \
    unless symbol.match?(/\A[a-zA-Z_$][a-zA-Z0-9_$]{0,59}\z/)

  members = JsMembersService.new(symbol, workspace_root).call
  render json: { symbol: symbol, members: members }
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#js_program ⇒ Object

GET /mbeditor/js_program The workspace's own JS source, for Monaco's TypeScript program. With ?path= it returns just that one file, which is how the editor refreshes after a change without re-sending the whole tree.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 570

def js_program
  if params[:path].present?
    entry = JsProgramService.file(workspace_root, params[:path])
    return render json: { ok: true, file: entry }
  end

  render json: JsProgramService.call(workspace_root)
rescue StandardError => e
  render json: { ok: false, error: e.message }, status: :unprocessable_content
end

#lint ⇒ Object

POST /mbeditor/lint — run rubocop --stdin (or haml-lint for .haml files)



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# File 'app/controllers/mbeditor/editors_controller.rb', line 972

def lint
  path = resolve_path(params[:path])
  return render json: { error: "Forbidden" }, status: :forbidden unless path

  filename = path.to_s
  code = params[:code] || File.read(path)

  if params[:language] == "javascript"
    unless JsSyntaxCheckService.available?
      return render json: { error: "JS syntax check not available", markers: [] }, status: :unprocessable_content
    end

    err = JsSyntaxCheckService.check(code)
    markers = if err
      line = err["line"] || 1
      col  = (err["column"] || 0) + 1
      [{
        severity: "error",
        copName: "Babel",
        correctable: false,
        message: "[babel] #{err['message']}",
        startLine: line, startCol: col, endLine: line, endCol: col + 1
      }]
    else
      # Only when the file parses: the scope lint would re-hit the same
      # parse error and report nothing useful on top of the marker above.
      JsSyntaxCheckService.scope_lint(workspace_root, code).map do |w|
        line = w["line"] || 1
        col  = (w["column"] || 0) + 1
        {
          severity: "warning",
          copName: "BabelScope",
          correctable: false,
          message: "[babel] #{w['message']}",
          startLine: line, startCol: col,
          endLine: line, endCol: col + [w["name"].to_s.length, 1].max
        }
      end
    end
    return render json: { markers: markers }
  end

  if File.basename(filename).end_with?('.haml')
    unless AvailabilityProbe.haml_lint(workspace_root)
      return render json: { error: "haml-lint not available", markers: [] }, status: :unprocessable_content
    end

    markers = run_haml_lint(code)
    return render json: { markers: markers }
  end

  cmd = AvailabilityProbe.rubocop_command(workspace_root) + [AvailabilityProbe.rubocop_server_flag(workspace_root), "--stdin", filename, "--format", "json", "--no-color"]
  env = { 'RUBOCOP_CACHE_ROOT' => File.join(Dir.tmpdir, 'rubocop') }
  output = run_with_timeout(env, cmd, stdin_data: code)

  idx = output.index("{")
  result = idx ? JSON.parse(output[idx..]) : {}
  result = {} unless result.is_a?(Hash)
  offenses = result.dig("files", 0, "offenses") || []

  markers = offenses.map do |offense|
    {
      severity: cop_severity(offense["severity"]),
      copName: offense["cop_name"],
      correctable: offense["correctable"] == true,
      message: "[#{offense['cop_name']}] #{offense['message']}",
      startLine: offense.dig("location", "start_line") || offense.dig("location", "line"),
      startCol: offense.dig("location", "start_column") || offense.dig("location", "column") || 1,
      endLine: offense.dig("location", "last_line") || offense.dig("location", "line"),
      endCol: offense.dig("location", "last_column") || offense.dig("location", "column") || 1,
      # Same predicate the ruby-lsp path uses, so dead code fades whichever
      # linter produced the offense. Plain rubocop JSON carries no
      # code_description, so there's no codeHref to pass on here.
      unnecessary: LspDiagnosticsTranslator.unnecessary?(offense["cop_name"])
    }
  end

  render json: { markers: markers, summary: result["summary"] }
rescue StandardError => e
  render json: { error: e.message, markers: [] }, status: :unprocessable_content
end

#model_graph ⇒ Object

GET /mbeditor/model_graph — ActiveRecord models and their associations.

Cached until a model or migration file changes; refresh=1 forces a rebuild. Generating it eager-loads the host app, which is why this is only requested when the Models tab is opened.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 763

def model_graph
  ModelGraphService.invalidate(workspace_root) if params[:refresh].present?
  render json: ModelGraphService.call(workspace_root)
rescue StandardError => e
  render json: { ok: false, error: e.message, models: [], edges: [] },
         status: :unprocessable_content
end

#model_schema ⇒ Object

GET /mbeditor/model_schema?model=User Returns the db/schema.rb table definition for the named model as JSON. 404 when the schema file is missing or the table is not found.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 1222

def model_schema
  model_name = params[:model].to_s.strip
  return render json: { error: "model required" }, status: :bad_request if model_name.blank?
  # SchemaService derives a file path from this name, so it is validated the
  # same way #module_members validates its own: a constant name, nothing that
  # could carry a "..".
  return render json: { error: "Invalid model" }, status: :bad_request \
    unless model_name.match?(/\A[A-Z][A-Za-z0-9_:]*\z/)

  schema = SchemaService.new(model_name, workspace_root.to_s).call
  if schema
    render json: schema
  else
    hint = " (Check if the model has a custom table_name or if db/schema.rb exists)"
    render json: { error: "No schema found for '#{model_name}'#{hint}" }, status: :not_found
  end
end

#module_members ⇒ Object

GET /mbeditor/module_members?name=ArticlesHelper Returns methods defined in the workspace file that defines the named module/class.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 788

def module_members
  name = params[:name].to_s.strip
  return render json: { error: "Invalid name" }, status: :bad_request \
    unless name.match?(/\A[A-Z][a-zA-Z0-9_]*\z/)

  excl_patterns = Array(Mbeditor.configuration.excluded_paths).map(&:to_s).reject(&:blank?)
  file = RubyDefinitionService.module_defined_in(
    workspace_root, name,
    excluded_paths: excl_patterns,
    included_dirs:  ruby_def_include_dirs
  )
  return render json: { name: name, methods: [] } unless file

  defs    = RubyDefinitionService.defs_in_file(file)
  methods = defs.flat_map do |method_name, entries|
    entries.map { |e| { name: method_name, line: e[:line], signature: e[:signature], file: relative_path(file) } }
  end
  render json: { name: name, file: relative_path(file), methods: methods }
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#monaco_asset ⇒ Object

GET /mbeditor/monaco-editor/*asset_path — serve packaged Monaco files



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# File 'app/controllers/mbeditor/editors_controller.rb', line 922

def monaco_asset
  # path_info is the path within the engine, e.g. "/monaco-editor/monaco.js"
  relative = request.path_info.delete_prefix("/")
  path = resolve_monaco_asset_path(relative)
  return head :not_found unless path

  # ~14 MB of bundle, re-sent on every page load without this.
  return unless stale?(last_modified: File.mtime(path), public: false)

  send_file path, disposition: "inline", type: Mime::Type.lookup_by_extension(File.extname(path).delete_prefix(".")) || "application/octet-stream"
end

#ping ⇒ Object

GET /mbeditor/ping — heartbeat for the frontend connectivity check Silence the log line so development consoles are not spammed.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 82

def ping
  Rails.logger.silence { render json: { ok: true } }
end

#prune_branch_states ⇒ Object

POST /mbeditor/prune_branch_states — remove states for deleted branches



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# File 'app/controllers/mbeditor/editors_controller.rb', line 178

def prune_branch_states
  root = workspace_root.to_s
  out, status = GitService.run_git(root, "branch", "--format=%(refname:short)")
  return render json: { pruned: [] } unless status.success?

  local_branches = out.split("\n").map(&:strip).reject(&:empty?)
  pruned = editor_state_service.prune_branch_states(active_branches: local_branches)

  hist_dir = workspace_root.join('tmp', 'mbeditor_history')
  if File.directory?(hist_dir)
    Dir.glob(File.join(hist_dir, '*.json')) do |hist_file|
      data = begin
        JSON.parse(File.read(hist_file))
      rescue JSON::ParserError => e
        Rails.logger.error("[mbeditor] prune_branch_states: skipping corrupt history file #{hist_file}: #{e.message}")
        nil
      end
      next unless data.is_a?(Hash) && data['branch']
      FileUtils.rm_f(hist_file) unless local_branches.include?(data['branch'])
    end
  end

  render json: { pruned: pruned }
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#pwa_icon ⇒ Object

GET /mbeditor/mbeditor-icon.svg — PWA icon



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# File 'app/controllers/mbeditor/editors_controller.rb', line 963

def pwa_icon
  path = Mbeditor::Engine.root.join("public", "mbeditor-icon.svg").to_s
  return render plain: "Not found", status: :not_found unless File.file?(path)
  return unless stale?(last_modified: File.mtime(path), public: false)

  send_file path, disposition: "inline", type: "image/svg+xml"
end

#pwa_manifest ⇒ Object

GET /mbeditor/manifest.webmanifest — PWA manifest



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# File 'app/controllers/mbeditor/editors_controller.rb', line 935

def pwa_manifest
  base = mbeditor_base_path
  manifest = {
    name: "Mbeditor — #{Rails.root.basename}",
    short_name: "Mbeditor",
    description: "Mini Browser Editor",
    start_url: "#{base}/",
    scope: "#{base}/",
    display: "standalone",
    background_color: "#1e1e2e",
    theme_color: "#1e1e2e",
    icons: [
      { src: "#{base}/mbeditor-icon.svg", sizes: "any", type: "image/svg+xml", purpose: "any maskable" }
    ]
  }
  render plain: JSON.generate(manifest), content_type: "application/manifest+json"
end

#pwa_sw ⇒ Object

GET /mbeditor/sw.js — minimal PWA service worker



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# File 'app/controllers/mbeditor/editors_controller.rb', line 954

def pwa_sw
  path = Mbeditor::Engine.root.join("public", "sw.js").to_s
  return render plain: "Not found", status: :not_found unless File.file?(path)
  return unless stale?(last_modified: File.mtime(path), public: false)

  send_file path, disposition: "inline", type: "application/javascript"
end

#quick_fix ⇒ Object

POST /mbeditor/quick_fix — autocorrect the buffer with rubocop -A and return the diff as a text edit

Runs a full rubocop -A pass on the in-memory buffer content (not the file on disk). Using a full pass (rather than --only ) means coupled cops like Layout/EmptyLineAfterMagicComment are also applied in the same round, so the result is always a clean, lint-passing state. The minimal line diff returned to Monaco keeps the edit tight.

Params:

path     - workspace-relative file path (used to derive the filename for rubocop)
code     - current file content as a string
cop_name - the cop the user clicked on (used only for the action label; not passed to rubocop)

Returns:

{ fix: { startLine, startCol, endLine, endCol, replacement } }
or { fix: null } when rubocop produced no change


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# File 'app/controllers/mbeditor/editors_controller.rb', line 1070

def quick_fix
  path = resolve_path(params[:path])
  return render json: { error: "Forbidden" }, status: :forbidden unless path

  cop_name = params[:cop_name].to_s.strip
  return render json: { error: "cop_name required" }, status: :unprocessable_content if cop_name.empty?
  return render json: { error: "Invalid cop name" }, status: :unprocessable_content unless cop_name.match?(/\A[\w\/]+\z/)

  code = params[:code].to_s
  ext  = File.extname(File.basename(path))

  # Use a workspace-local tempfile so RuboCop's config discovery walks up
  # from the source file's directory and finds the host app's .rubocop.yml.
  Tempfile.create([".mbeditor_fix_", ext], File.dirname(path)) do |f|
    f.write(code)
    f.flush
    tmpfile = f.path

    cmd = AvailabilityProbe.rubocop_command(workspace_root) + [AvailabilityProbe.rubocop_server_flag(workspace_root), "-A", "--no-color", tmpfile]
    env = { 'RUBOCOP_CACHE_ROOT' => File.join(Dir.tmpdir, 'rubocop') }
    status = run_lint_command(env, cmd)[:exit_status]

    # exit 0 = no offenses, exit 1 = offenses corrected, exit 2 = error
    unless status.success? || status.exitstatus == 1
      return render json: { fix: nil }
    end

    corrected = File.read(tmpfile, encoding: "UTF-8", invalid: :replace, undef: :replace)
    fix = compute_text_edit(code, corrected)
    render json: { fix: fix }
  end
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#raw ⇒ Object

GET /mbeditor/raw?path=... — send raw file directly (for images)

?download=1 flips the disposition to attachment, which is the whole of the explorer's "Download" action: the browser's own save dialog does the rest, so there is no separate endpoint and no client-side blob.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 362

def raw
  path = resolve_path(params[:path])
  return render json: { error: "Forbidden" }, status: :forbidden unless path
  return render json: { error: "Not found" }, status: :not_found unless File.file?(path)

  stat = File.stat(path)
  return render_file_too_large(stat.size) if stat.size > FileOperationService::MAX_FILE_SIZE_BYTES
  return unless stale?(last_modified: stat.mtime, public: false)

  send_file path, disposition: params[:download].present? ? "attachment" : "inline"
end

#related_files ⇒ Object

GET /mbeditor/related_files?path=...



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# File 'app/controllers/mbeditor/editors_controller.rb', line 1203

def related_files
  path = resolve_path(params[:path])
  return render json: {}, status: :bad_request unless path
  rel = relative_path(path)
  custom = Array(Mbeditor.configuration.related_files_custom_paths)
  result = RailsRelatedFilesService.find(workspace_root.to_s, rel, custom_paths: custom)
  render json: result
end

#rename ⇒ Object

PATCH /mbeditor/rename — rename file or directory



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# File 'app/controllers/mbeditor/editors_controller.rb', line 459

def rename
  old_path = resolve_path(params[:path])
  new_path = resolve_path(params[:new_path])
  return render json: { error: "Forbidden" }, status: :forbidden unless old_path && new_path
  return render json: { error: "Cannot rename this path" }, status: :forbidden if path_blocked_for_operations?(old_path) || path_blocked_for_operations?(new_path)

  result = FileOperationService.new(workspace_root).rename(old_path, new_path)
  broadcast_files_changed([old_path, new_path])
  render json: result
rescue FileOperationService::PathNotFoundError
  render json: { error: "Path not found" }, status: :not_found
rescue FileOperationService::TargetExistsError
  render json: { error: "Target path already exists" }, status: :unprocessable_content
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#replace_in_files ⇒ Object

POST /mbeditor/replace_in_files Replaces a string/pattern across all matching files in the workspace. Returns { replaced_count:, files_affected:[], errors:[], partial: }



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# File 'app/controllers/mbeditor/editors_controller.rb', line 877

def replace_in_files
  query       = params[:query].to_s.strip
  replacement = params[:replacement].to_s
  use_regex   = params[:regex] == 'true'
  match_case  = params[:match_case] == 'true'
  whole_word  = params[:whole_word] == 'true'

  return render json: { error: "Query is required" }, status: :bad_request if query.blank?
  return render json: { error: "Query too long" }, status: :bad_request if query.length > 500

  result = SearchReplaceService.replace(
    workspace_root, query, replacement,
    use_regex: use_regex, match_case: match_case, whole_word: whole_word,
    excluded_paths: Mbeditor.configuration.excluded_paths
  )

  if result.key?(:error)
    render json: { error: result[:error] }, status: :unprocessable_content
  else
    render json: result
  end
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#routes ⇒ Object

GET /mbeditor/routes?path=app/controllers/users_controller.rb

Which routes reach each action in a controller, for the inline hints the editor draws beside every def. Returns {} for anything that is not a controller rather than erroring — the client asks for every Ruby file it opens and should not have to know the convention.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 1195

def routes
  key = RouteService.controller_key(params[:path].to_s)
  return render json: { controller: nil, actions: {} } unless key

  render json: { controller: key, actions: RouteService.for_controller(key) }
end

#rubocop_run ⇒ Object

POST /mbeditor/rubocop — whole-workspace rubocop run

mode=autocorrect adds -a (safe corrections only) and writes to disk, so the response doubles as the post-correction offense list.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 1109

def rubocop_run
  unless AvailabilityProbe.rubocop(workspace_root)
    return render json: { ok: false, error: "RuboCop is not available", files: [] }, status: :unprocessable_content
  end

  mode = params[:mode].to_s == "autocorrect" ? :autocorrect : :check
  result = RubocopRunService.run(workspace_root, mode: mode)
  # `-a` writes to disk behind every open tab's back. No path list: a
  # whole-project run can touch anything, and the omitted-paths form makes
  # the client re-check every open tab, which is exactly what's wanted.
  broadcast_files_changed(nil, structural: false) if mode == :autocorrect && result[:ok]
  render json: result
rescue StandardError => e
  render json: { ok: false, error: e.message, files: [] }, status: :unprocessable_content
end

#ruby_lsp ⇒ Object

POST /mbeditor/ruby_lsp — bridge to the host's ruby-lsp process. Body: { path:, content:, line: (1-based), character: (1-based), lsp_method: } Translates LSP responses into the shapes the frontend providers already consume; { fallback: true } tells the frontend to use the legacy path.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 647

def ruby_lsp
  lsp_method = RUBY_LSP_METHODS[params[:lsp_method].to_s]
  return render json: { error: "Invalid lsp_method" }, status: :bad_request unless lsp_method

  # Before resolve_path: health and restart carry no document.
  return render json: ruby_lsp_health(restart: lsp_method == :restart) if lsp_method.is_a?(Symbol)

  path = resolve_path(params[:path])
  return render json: { error: "Invalid path" }, status: :bad_request unless path

  content = params[:content].to_s
  if content.bytesize > FileOperationService::MAX_FILE_SIZE_BYTES
    return render json: { error: "Content too large" }, status: :content_too_large
  end

  unless AvailabilityProbe.ruby_lsp(workspace_root)
    return render json: { error: "ruby-lsp unavailable",
                          reason: ruby_lsp_unavailable_reason,
                          rubyLspAvailable: false }, status: :unprocessable_content
  end

  positionless = RUBY_LSP_POSITIONLESS.include?(lsp_method)
  extra = if positionless
    {}
  else
    # Monaco positions are 1-based; LSP positions are 0-based.
    { position: { line: [params[:line].to_i - 1, 0].max,
                  character: [params[:character].to_i - 1, 0].max } }
  end
  per_method = RUBY_LSP_EXTRA_PARAMS[lsp_method]
  per_method = per_method.call(params) if per_method.respond_to?(:call)
  extra = extra.merge(per_method || {})
  # Only the two RuboCop-backed requests pay its boot cost; documentSymbol,
  # foldingRange and the rest are a single Prism parse and want the normal
  # budget.
  timeout = RUBY_LSP_RUBOCOP_METHODS.include?(lsp_method) ? RUBY_LSP_DIAGNOSTICS_TIMEOUT : nil

  client = RubyLspClient.for(workspace_root.to_s)
  result = client.request_with_document(lsp_method, path, content, extra, timeout: timeout)
  # The URI is what the diagnostics translator checks embedded code-action
  # edits against, so it must be the same string the client sent.
  render json: translate_ruby_lsp_result(params[:lsp_method].to_s, result, "file://#{path}")
rescue RubyLspClient::TimeoutError, RubyLspClient::NotReadyError
  # lspState lets the frontend tell "this one request was slow" from "the
  # server is dead", and stop asking in the latter case.
  render json: { fallback: true, lspState: RubyLspClient.for(workspace_root.to_s).state }
rescue StandardError => e
  render json: { error: e.message, fallback: true }
end

#ruby_rename ⇒ Object

POST /mbeditor/ruby_rename — rename a Ruby constant across the workspace.

Body: { path:, content:, line:, character:, new_name:, open_paths: [] }

The workspace edit is split by whether the file is open in the editor:

- open files    -> edits returned for Monaco to apply, so the change is
                 undoable, marks the tab dirty, and respects the
                 buffer the user is actually looking at
- closed files  -> written here, then announced over the cable

That split is what makes unsaved work safe: anything dirty is by definition open, and open files are never written by the server.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 719

def ruby_rename
  path = resolve_path(params[:path])
  return render json: { error: "Invalid path" }, status: :bad_request unless path

  new_name = params[:new_name].to_s.strip
  unless new_name.match?(RUBY_CONSTANT_PATH)
    return render json: { error: "Only Ruby constants can be renamed, and #{new_name.inspect} is not one." },
                  status: :unprocessable_content
  end

  content = params[:content].to_s
  if content.bytesize > FileOperationService::MAX_FILE_SIZE_BYTES
    return render json: { error: "Content too large" }, status: :content_too_large
  end

  unless AvailabilityProbe.ruby_lsp(workspace_root)
    return render json: { error: "ruby-lsp unavailable", reason: ruby_lsp_unavailable_reason,
                          rubyLspAvailable: false }, status: :unprocessable_content
  end

  result = RubyLspClient.for(workspace_root.to_s).request_with_document(
    "textDocument/rename", path, content,
    { position: { line: [params[:line].to_i - 1, 0].max,
                  character: [params[:character].to_i - 1, 0].max },
      newName: new_name },
    timeout: RUBY_LSP_RENAME_TIMEOUT
  )

  render json: apply_rename_changes(result, Array(params[:open_paths]).map(&:to_s))
rescue RubyLspClient::TimeoutError, RubyLspClient::NotReadyError
  render json: { error: "ruby-lsp did not answer in time", fallback: true,
                 lspState: RubyLspClient.for(workspace_root.to_s).state },
         status: :unprocessable_content
rescue StandardError => e
  # ruby-lsp raises InvalidNameError ("already in use by X") for a clash;
  # its message is the most useful thing we can show.
  render json: { error: e.message }, status: :unprocessable_content
end

#run_all_tests ⇒ Object

POST /mbeditor/test_all — run the whole suite

No path: the framework's own default target applies. Deliberately a plain blocking request like /test, just with the suite ceiling — streaming would need a channel, a buffer and a cancel protocol for a button most people press a handful of times a day.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 1131

def run_all_tests
  config = Mbeditor.configuration
  result = TestRunnerService.run_all(
    workspace_root.to_s,
    framework: config.test_framework&.to_sym,
    command: config.test_all_command,
    timeout: (config.test_all_timeout || 1800).to_i
  )
  render json: result
rescue StandardError => e
  render json: { ok: false, error: e.message }, status: :unprocessable_content
end

#run_test ⇒ Object

POST /mbeditor/test — run tests for the given file



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# File 'app/controllers/mbeditor/editors_controller.rb', line 1145

def run_test
  path = resolve_path(params[:path])
  return render json: { error: "Forbidden" }, status: :forbidden unless path

  relative = relative_path(path)
  test_file = TestRunnerService.resolve_test_file(workspace_root.to_s, relative)
  return render json: { error: "No matching test file found for #{relative}" }, status: :not_found unless test_file

  full_test = File.join(workspace_root.to_s, test_file)
  return render json: { error: "Test file does not exist: #{test_file}" }, status: :not_found unless File.file?(full_test)

  raw_line = params[:line].to_s
  unless raw_line.empty? || raw_line.match?(/\A\d+\z/)
    return render json: { error: "Invalid line" }, status: :bad_request
  end

  # A line filter only makes sense when the user is in the test file
  # itself — running from a source file resolves to a whole test file.
  line = raw_line.empty? ? nil : raw_line.to_i
  line = nil unless line&.positive? && test_file == relative

  config = Mbeditor.configuration
  result = TestRunnerService.run(
    workspace_root.to_s,
    test_file,
    framework: config.test_framework&.to_sym,
    command: config.test_command,
    timeout: (config.test_timeout || 180).to_i,
    line: line
  )

  render json: result.merge(testFile: test_file, filteredLine: line)
rescue StandardError => e
  render json: { error: e.message, ok: false }, status: :unprocessable_content
end

#save ⇒ Object

POST /mbeditor/file — save file



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# File 'app/controllers/mbeditor/editors_controller.rb', line 375

def save
  path = resolve_path(params[:path])
  return render json: { error: "Forbidden" }, status: :forbidden unless path
  return render json: { error: "Cannot write to this path" }, status: :forbidden if path_blocked_for_operations?(path)

  result = FileOperationService.new(workspace_root).save(path, params[:code].to_s)
  broadcast_files_changed([path], structural: false)
  broadcast_file_saved(path)
  render json: result
rescue FileOperationService::FileTooLargeError
  render_file_too_large(params[:code].to_s.bytesize)
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#save_branch_state ⇒ Object 



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# File 'app/controllers/mbeditor/editors_controller.rb', line 164

def save_branch_state
  branch = sanitize_branch_name(params[:branch])
  return render json: { error: "Invalid branch name" }, status: :bad_request unless branch

  payload = params[:state].to_unsafe_h
  editor_state_service.write_branch_state(branch, payload)
  render json: { ok: true }
rescue EditorStateService::PayloadTooLargeError
  render json: { error: "State payload too large" }, status: :content_too_large
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#save_file_history ⇒ Object

POST /mbeditor/file_history



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# File 'app/controllers/mbeditor/editors_controller.rb', line 236

def save_file_history
  branch = sanitize_branch_name(params[:branch])
  return render json: { error: 'Invalid branch name' }, status: :bad_request unless branch

  path = resolve_path(params[:path])
  return render json: { error: 'Forbidden' }, status: :forbidden unless path

  rel      = relative_path(path)
  new_ops  = params[:ops]
  return render json: { error: 'ops must be an array' }, status: :bad_request unless new_ops.is_a?(Array)
  return head :no_content if new_ops.empty?

  new_ops_clean = new_ops.map { |op| Array(op).first(5) }

  hist = history_file_path(branch, rel)
  FileUtils.mkdir_p(File.dirname(hist))

  File.open(hist, File::RDWR | File::CREAT) do |f|
    flock_exclusive_with_timeout!(f)
    existing = f.size > 0 ? (JSON.parse(f.read) rescue {}) : {}

    if existing.empty?
      # An empty base is a legitimate one, and in practice the usual one:
      # the client starts tracking when the editor mounts, which is before
      # the file content has arrived, so the load itself is recorded as the
      # first op against an empty document. Rejecting "" meant the initial
      # POST for every file 400'd and no history was ever written at all.
      # Only an absent base is an error.
      unless params.key?(:base)
        return render json: { error: 'base required for initial history' }, status: :bad_request
      end

      base = params[:base].to_s
      return render json: { error: 'base too large' }, status: :content_too_large if base.bytesize > STATE_MAX_BYTES
      existing = { 'branch' => branch, 'path' => rel, 'base' => base, 'ops' => [], 't' => Time.now.utc.iso8601 }
    end

    existing['ops'] = (existing['ops'] || []) + new_ops_clean
    existing['t']   = Time.now.utc.iso8601

    if existing['ops'].length > HISTORY_MAX_OPS
      to_compact       = existing['ops'].shift(HISTORY_COMPACT_TARGET)
      existing['base'] = compact_history_ops(existing['base'], to_compact)
    end

    f.truncate(0)
    f.rewind
    f.write(existing.to_json)
  end

  head :no_content
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#save_state ⇒ Object

POST /mbeditor/state — save workspace state



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# File 'app/controllers/mbeditor/editors_controller.rb', line 140

def save_state
  raw = params[:state]
  raw = raw.to_unsafe_h if raw.respond_to?(:to_unsafe_h)
  editor_state_service.write_state(raw)
  render json: { ok: true }
rescue EditorStateService::PayloadTooLargeError
  render json: { error: "State payload too large" }, status: :content_too_large
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#search ⇒ Object

GET /mbeditor/search?q=...&offset=0&limit=50&regex=false&match_case=false&whole_word=false



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# File 'app/controllers/mbeditor/editors_controller.rb', line 838

def search
  query      = params[:q].to_s.strip
  offset     = [params[:offset].to_i, 0].max
  limit      = [[params[:limit].to_i > 0 ? params[:limit].to_i : 50, 200].min, 1].max
  use_regex  = params[:regex] == 'true'
  match_case = params[:match_case] == 'true'
  whole_word = params[:whole_word] == 'true'
  needed     = offset + limit + 1   # collect one extra to detect has_more

  return render json: [] if query.blank?
  return render json: { error: "Query too long" }, status: :bad_request if query.length > 500

  # Optional single-file scope, used by the live result refresh after a save.
  if params[:path].present?
    full = resolve_path(params[:path])
    return render json: { error: "Invalid path" }, status: :forbidden unless full

    results = SearchReplaceService.search(workspace_root, query, limit: needed,
                                          use_regex: use_regex, match_case: match_case, whole_word: whole_word,
                                          excluded_paths: Mbeditor.configuration.excluded_paths, paths: [full])
    return render json: { results: results, has_more: false }
  end

  # One subprocess per query: the full (capped) result set is collected and
  # briefly cached, so pagination and the total count come from memory.
  page = SearchReplaceService.search_page(workspace_root, query, offset: offset, limit: limit,
                                          use_regex: use_regex, match_case: match_case, whole_word: whole_word,
                                          excluded_paths: Mbeditor.configuration.excluded_paths)
  response = { results: page[:results], has_more: page[:has_more], partial: page[:partial] }
  response[:total_count] = page[:total_count] if page[:total_count]

  render json: response
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#show ⇒ Object

GET /mbeditor/file?path=...



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# File 'app/controllers/mbeditor/editors_controller.rb', line 292

def show
  path = resolve_path(params[:path])
  return render json: { error: "Forbidden" }, status: :forbidden unless path

  unless File.file?(path)
    return render json: missing_file_payload(params[:path]) if allow_missing_file?

    return render json: { error: "Not found" }, status: :not_found
  end

  start_line = params[:start_line] ? params[:start_line].to_i : nil
  line_count  = params.key?(:line_count) ? params[:line_count].to_i : 500
  line_count  = [line_count, 5000].min

  if start_line
    stat = File.stat(path)
    total_bytes = stat.size
    cached_total = self.class.cached_total_lines(path, stat.mtime.to_f)
    chunk = []
    total_lines = 0
    File.foreach(path, encoding: "UTF-8", invalid: :replace, undef: :replace) do |line|
      chunk << line if total_lines >= start_line && chunk.length < line_count
      total_lines += 1
      # Once the requested window is filled and the total is already known
      # from a prior read of this (path, mtime), skip the rest of the file.
      if cached_total && chunk.length >= line_count
        total_lines = cached_total
        break
      end
    end
    self.class.store_total_lines(path, stat.mtime.to_f, total_lines) unless cached_total
    return render json: {
      path:        relative_path(path),
      content:     chunk.join,
      truncated:   total_lines > start_line + chunk.length,
      start_line:  start_line,
      line_count:  chunk.length,
      total_lines: total_lines,
      total_bytes: total_bytes
    }
  end

  size = File.size(path)
  return render_file_too_large(size) if size > FileOperationService::MAX_FILE_SIZE_BYTES

  if image_path?(path)
    return render json: {
      path: relative_path(path),
      image: true,
      size: size,
      content: ""
    }
  end

  stat = File.stat(path)
  etag = "#{stat.mtime.to_i}-#{stat.size}"

  if stale?(etag: etag, public: false)
    content = File.read(path, encoding: "UTF-8", invalid: :replace, undef: :replace)
    render json: { path: relative_path(path), content: content }
  end
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#state ⇒ Object

GET /mbeditor/state — load workspace state



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# File 'app/controllers/mbeditor/editors_controller.rb', line 131

def state
  render json: editor_state_service.read_state
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#workspace ⇒ Object

GET /mbeditor/workspace — metadata about current workspace root



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# File 'app/controllers/mbeditor/editors_controller.rb', line 87

def workspace
  warm_ruby_definition_cache
  render json: {
    rootName: workspace_root.basename.to_s,
    rootPath: workspace_root.to_s,
    rubocopAvailable: AvailabilityProbe.rubocop(workspace_root),
    rubocopConfigPath: rubocop_config_path,
    hamlLintAvailable: AvailabilityProbe.haml_lint(workspace_root),
    gitAvailable: AvailabilityProbe.git(workspace_root),
    blameAvailable: AvailabilityProbe.git(workspace_root),
    redmineEnabled: Mbeditor.configuration.redmine_enabled == true,
    testAvailable: test_available?,
    # The client derives its request timeouts from these. Two independently
    # hard-coded numbers is how you get the browser aborting a run the
    # server is still happily executing, reported as a generic network
    # error instead of the server's own message.
    testTimeout: (Mbeditor.configuration.test_timeout || 180).to_i,
    testAllTimeout: (Mbeditor.configuration.test_all_timeout || 1800).to_i,
    actionCableEnabled: action_cable_enabled?,
    jsSyntaxCheckAvailable: JsSyntaxCheckService.available?,
    rubyLspAvailable: AvailabilityProbe.ruby_lsp(workspace_root),
    # "rg" | "git" | "grep". The tiers differ by 10-30x, and the usual
    # reason for a slow search is ripgrep being installed but absent from
    # the server process's PATH — which is invisible without this.
    searchBackend: SearchReplaceService.backend(workspace_root)
  }
end