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
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.

10
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.

30

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.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.



35
36
37
38
39
40
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 35

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

.store_total_lines(path, mtime, total) ⇒ Object 



42
43
44
45
46
47
48
49
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 42

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



117
118
119
120
121
122
123
124
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 117

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.



1086
1087
1088
1089
1090
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 1086

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.



728
729
730
731
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 728

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

#client_config ⇒ Object

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



1068
1069
1070
1071
1072
1073
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 1068

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



355
356
357
358
359
360
361
362
363
364
365
366
367
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 355

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



338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 338

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.



439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 439

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



424
425
426
427
428
429
430
431
432
433
434
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 424

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.



722
723
724
725
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 722

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



167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 167

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.



759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 759

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



87
88
89
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 87

def files
  render json: FileTreeService.build(workspace_root)
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.



1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 1115

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') }
    _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



860
861
862
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 860

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

#git_status ⇒ Object

GET /mbeditor/git_status



850
851
852
853
854
855
856
857
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 850

def git_status
  output, status = GitService.run_git(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

#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.



375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 375

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



53
54
55
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 53

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.



468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 468

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.



507
508
509
510
511
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 507

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.



490
491
492
493
494
495
496
497
498
499
500
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 490

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.



517
518
519
520
521
522
523
524
525
526
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 517

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)



910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 910

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
      []
    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.



710
711
712
713
714
715
716
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 710

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.



1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 1095

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
    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.



735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 735

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



865
866
867
868
869
870
871
872
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 865

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

  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.



59
60
61
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 59

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

#prune_branch_states ⇒ Object

POST /mbeditor/prune_branch_states — remove states for deleted branches



139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 139

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



902
903
904
905
906
907
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 902

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



875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 875

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



894
895
896
897
898
899
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 894

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 ) 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


995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 995

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') }
    _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)



310
311
312
313
314
315
316
317
318
319
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 310

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=...



1076
1077
1078
1079
1080
1081
1082
1083
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 1076

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



406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 406

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: }



824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 824

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



594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 594

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.



666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 666

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_test ⇒ Object

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



1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 1031

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 || 60,
    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



322
323
324
325
326
327
328
329
330
331
332
333
334
335
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 322

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])
  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 



125
126
127
128
129
130
131
132
133
134
135
136
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 125

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



197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 197

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?
      base = params[:base].to_s
      return render json: { error: 'base required for initial history' }, status: :bad_request if base.empty?
      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



101
102
103
104
105
106
107
108
109
110
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 101

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



785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 785

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=...



244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 244

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



92
93
94
95
96
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 92

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



64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
 
# File 'app/controllers/mbeditor/editors_controller.rb', line 64

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?,
    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