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
RG_AVAILABLE = 
system("which rg > /dev/null 2>&1")
STATE_MAX_BYTES = 
1 * 1024 * 1024
SAFE_BRANCH_NAME = 
/\A[a-zA-Z0-9._\-\/]+\z/
MAX_REPLACE_FILES = 
500

Instance Method Summary collapse

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 98

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

  path = workspace_root.join("tmp", "mbeditor_branch_states.json")
  if File.exist?(path)
    all = JSON.parse(File.read(path))
    render json: (all[branch] || {})
  else
    render json: {}
  end
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 787

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

#client_config ⇒ Object

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



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# File 'app/controllers/mbeditor/editors_controller.rb', line 770

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

#create_dir ⇒ Object

POST /mbeditor/create_dir — create directory recursively



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# File 'app/controllers/mbeditor/editors_controller.rb', line 263

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 246

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
  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 311

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 296

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 if result.key?(:type)
  render json: result
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
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 392

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

  # Ensure workspace is scanned so include_calls are populated in the cache.
  # Fast no-op on subsequent calls (mtime checks only).
  excl_patterns = Array(Mbeditor.configuration.excluded_paths).map(&:to_s).reject(&:blank?)
  RubyDefinitionService.scan(workspace_root,
                             excluded_paths: excl_patterns,
                             included_dirs:  ruby_def_include_dirs)

  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



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# File 'app/controllers/mbeditor/editors_controller.rb', line 47

def files
  root = workspace_root.to_s
  cached = cached_file_tree(root)
  return render json: cached if cached

  tree = build_tree(root)
  store_file_tree(root, tree)
  render json: tree
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 815

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 = rubocop_command + ["--no-server", "-A", "--no-color", tmpfile]
    env = { 'RUBOCOP_CACHE_ROOT' => File.join(Dir.tmpdir, 'rubocop') }
    _out, _err, status = Open3.capture3(env, *cmd)
    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 579

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 569

def git_status
  output, _err, status = Open3.capture3("git", "-C", workspace_root.to_s, "status", "--porcelain")
  branch = GitService.current_branch(workspace_root.to_s) || ""
  files = GitService.parse_porcelain_status(output)
  render json: { ok: status.success?, files: files, branch: branch }
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 20

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 340

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/)

  results = JsDefinitionService.new(symbol, workspace_root).call
  render json: { results: results }
rescue StandardError => e
  render json: { 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 354

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

#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 649

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 File.basename(filename).end_with?('.haml')
    unless haml_lint_available?
      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 = rubocop_command + ["--no-server", "--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
    }
  end

  render json: { markers: markers, summary: result["summary"] }
rescue StandardError => e
  render json: { error: e.message, markers: [] }, 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 796

def model_schema
  model_name = params[:model].to_s.strip
  return render json: { error: "model required" }, status: :bad_request if model_name.blank?

  schema = SchemaService.new(model_name, workspace_root.to_s).call
  if schema
    render json: schema
  else
    render json: { error: "No schema found for '#{model_name}'" }, 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 368

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 584

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

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

#monaco_worker ⇒ Object

GET /mbeditor/monaco_worker.js — serve packaged Monaco worker entrypoint



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# File 'app/controllers/mbeditor/editors_controller.rb', line 594

def monaco_worker
  path = monaco_worker_file.to_s
  return render plain: "Not found", status: :not_found unless File.file?(path)

  send_file path, disposition: "inline", type: "application/javascript"
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 26

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 135

def prune_branch_states
  state_path = workspace_root.join("tmp", "mbeditor_branch_states.json")
  return render json: { pruned: [] } unless File.exist?(state_path)

  root = workspace_root.to_s
  out, _err, status = Open3.capture3("git", "-C", root, "branch", "--format=%(refname:short)")
  return render json: { pruned: [] } unless status.success?

  local_branches = out.split("\n").map(&:strip).reject(&:empty?)
  pruned = []
  File.open(state_path, File::RDWR) do |f|
    f.flock(File::LOCK_EX)
    all = JSON.parse(f.read) rescue {}
    pruned = all.keys - local_branches
    if pruned.any?
      pruned.each { |b| all.delete(b) }
      f.truncate(0)
      f.rewind
      f.write(all.to_json)
    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 630

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)

  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 602

def pwa_manifest
  raw  = root_path.chomp("/")
  base = raw.start_with?("/") || raw.empty? ? raw : "/#{raw}"
  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 622

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)

  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 <cop>) 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 708

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 = rubocop_command + ["--no-server", "-A", "--no-color", tmpfile]
    env = { 'RUBOCOP_CACHE_ROOT' => File.join(Dir.tmpdir, 'rubocop') }
    _out, _err, status = Open3.capture3(env, *cmd)

    # 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)



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# File 'app/controllers/mbeditor/editors_controller.rb', line 219

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)

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

  send_file path, disposition: "inline"
end

#related_files ⇒ Object

GET /mbeditor/related_files?path=…



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# File 'app/controllers/mbeditor/editors_controller.rb', line 777

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 278

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
  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 475

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

  # Collect all unique file paths that have at least one match.
  # Use a large limit to get all matching files; stream_search_results handles deduplication by file internally.
  raw_results = stream_search_results(query, 10_000, use_regex: use_regex, match_case: match_case, whole_word: whole_word)
  file_paths = raw_results.map { |r| r[:file] }.uniq

  # Fix 3: Cap the number of files to process
  if file_paths.length > MAX_REPLACE_FILES
    return render json: { error: "Too many files matched (#{file_paths.length}). Narrow your search." }, status: :unprocessable_entity
  end

  replaced_count = 0
  files_affected = []
  errors = []

  # Build the Ruby Regexp to use for gsub
  begin
    pattern = if use_regex
      flags = match_case ? 0 : Regexp::IGNORECASE
      Regexp.new(whole_word ? "\\b(?:#{query})\\b" : query, flags)
    else
      flags = match_case ? 0 : Regexp::IGNORECASE
      Regexp.new(whole_word ? "\\b#{Regexp.escape(query)}\\b" : Regexp.escape(query), flags)
    end
  rescue RegexpError => e
    return render json: { error: "Invalid regex: #{e.message}" }, status: :bad_request
  end

  file_paths.each do |rel_path|
    full_path = resolve_path(rel_path)
    unless full_path
      errors << { file: rel_path, error: "Forbidden" }
      next
    end

    # Fix 2: Check path_blocked_for_operations?
    if path_blocked_for_operations?(full_path)
      errors << { file: rel_path, error: "Forbidden" }
      next
    end

    unless File.file?(full_path)
      errors << { file: rel_path, error: "File not found" }
      next
    end
    if File.size(full_path) > FileOperationService::MAX_FILE_SIZE_BYTES
      errors << { file: rel_path, error: "File too large" }
      next
    end

    # Fix 1: Wrap per-file gsub/scan in a timeout to prevent ReDoS
    begin
      Timeout::timeout(5) do
        content = File.binread(full_path).force_encoding("UTF-8")
        replacements_in_file = content.scan(pattern).length
        new_content = content.gsub(pattern, replacement)

        # Fix 4: Use new_content != content instead of delta logic
        if new_content != content
          File.binwrite(full_path, new_content.encode("UTF-8", invalid: :replace, undef: :replace))
          files_affected << rel_path
          replaced_count += replacements_in_file
        end
      end
    rescue Timeout::Error
      errors << { file: rel_path, error: "Timed out processing file" }
      next
    rescue StandardError => e
      errors << { file: rel_path, error: e.message }
      next
    end
  end

  # Fix 5: Surface partial failure
  render json: {
    replaced_count: replaced_count,
    files_affected: files_affected,
    errors: errors,
    partial: errors.any? && files_affected.any?
  }
rescue StandardError => e
  render json: { 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 744

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)

  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 || 60
  )

  render json: result.merge(testFile: test_file)
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 231

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
  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 112

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
  return render json: { error: "State payload too large" }, status: :content_too_large if payload.to_json.bytesize > STATE_MAX_BYTES

  path = workspace_root.join("tmp", "mbeditor_branch_states.json")
  FileUtils.mkdir_p(workspace_root.join("tmp"))
  File.open(path, File::RDWR | File::CREAT) do |f|
    f.flock(File::LOCK_EX)
    existing = f.size > 0 ? JSON.parse(f.read) : {}
    existing[branch] = payload
    f.truncate(0)
    f.rewind
    f.write(existing.to_json)
  end
  render json: { ok: true }
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 76

def save_state
  raw = params[:state]
  raw = raw.to_unsafe_h if raw.respond_to?(:to_unsafe_h)
  payload = raw.to_json
  return render json: { error: "State payload too large" }, status: :content_too_large if payload.bytesize > STATE_MAX_BYTES

  path = workspace_root.join("tmp", "mbeditor_workspace.json")
  FileUtils.mkdir_p(workspace_root.join("tmp"))
  File.open(path, File::RDWR | File::CREAT) do |f|
    f.flock(File::LOCK_EX)
    f.truncate(0)
    f.rewind
    f.write(payload)
  end
  render json: { ok: true }
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 440

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

  # On first page, count total matches in parallel with fetching results.
  count_thread = offset == 0 ? Thread.new { count_search_results(query, use_regex: use_regex, match_case: match_case, whole_word: whole_word) } : nil

  results   = stream_search_results(query, needed, use_regex: use_regex, match_case: match_case, whole_word: whole_word)
  has_more  = results.length > offset + limit
  response  = { results: results[offset, limit] || [], has_more: has_more }
  if count_thread
    # Give the count thread up to 100 ms; omit total_count when it hasn't finished yet
    # so the first page is never blocked by the counting subprocess.
    count_thread.join(0.1)
    response[:total_count] = count_thread.value unless count_thread.alive?
  end

  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 162

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
    total_bytes = File.size(path)
    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
    end
    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 58

def state
  path = workspace_root.join("tmp", "mbeditor_workspace.json")
  if File.exist?(path)
    render json: JSON.parse(File.read(path))
  else
    render json: {}
  end
rescue Errno::ENOENT
  render json: {}
rescue JSON::ParserError
  render json: {}
rescue StandardError => e
  render json: { error: e.message }, status: :unprocessable_content
end

#ts_worker ⇒ Object

GET /mbeditor/ts_worker.js — serve TypeScript/JavaScript Monaco worker



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# File 'app/controllers/mbeditor/editors_controller.rb', line 638

def ts_worker
  path = [
    Mbeditor::Engine.root.join("public", "ts_worker.js"),
    Rails.root.join("public", "ts_worker.js")
  ].find { |p| p.file? }.to_s
  return render plain: "Not found", status: :not_found unless File.file?(path)

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

#unused_methods ⇒ Object

GET /mbeditor/unused_methods?path=app/models/article.rb Returns method names defined in the file that have no call-sites in the workspace.



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# File 'app/controllers/mbeditor/editors_controller.rb', line 425

def unused_methods
  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?)
  unused = UnusedMethodsService.call(
    workspace_root, path,
    excluded_paths: excl_patterns
  )
  render json: { unused: unused }
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 31

def workspace
  render json: {
    rootName: workspace_root.basename.to_s,
    rootPath: workspace_root.to_s,
    rubocopAvailable: rubocop_available?,
    rubocopConfigPath: rubocop_config_path,
    hamlLintAvailable: haml_lint_available?,
    gitAvailable: git_available?,
    blameAvailable: git_blame_available?,
    redmineEnabled: Mbeditor.configuration.redmine_enabled == true,
    testAvailable: test_available?,
    actionCableEnabled: action_cable_enabled?
  }
end