class PluginContext {
  /**
   * @param {object} deps - Injected dependencies
   * @param {string} deps.pluginId - Plugin unique ID (for namespacing)
   * @param {object} deps.sidebar - SidebarManager.registerPanel
   * @param {object} deps.commands - CommandPalette.register
   * @param {object} deps.statusBar - StatusBar.registerIndicator
   * @param {object} deps.eventBus - EventBus instance
   * @param {object} deps.settings - { get, set, onChanged }
   * @param {object} deps.editor - { getContent, getSelection, insertAtCursor, onContentChanged }
   * @param {object} deps.ipc - { invoke, on }
   * @param {object} deps.exportHooks - { preHooks: [], postHooks: [] }
   * @param {object} deps.formatRegistry - FormatRegistry instance ({ register, get, getAll })
   */
  constructor(deps) {
    const {
      pluginId,
      sidebar,
      commands,
      statusBar,
      eventBus,
      settings,
      editor,
      ipc,
      exportHooks,
      formatRegistry,
    } = deps;

    this.sidebar = {
      registerPanel: (id, opts) => sidebar.registerPanel(`${pluginId}:${id}`, opts),
    };

    this.commands = {
      register: (id, label, handler, shortcut) => {
        const safeHandler = (...args) => {
          try {
            handler(...args);
          } catch (err) {
            console.error(`[Plugin:${pluginId}] Command "${id}" error:`, err);
          }
        };
        commands.register(`${pluginId}:${id}`, label, safeHandler, shortcut);
      },
    };

    this.statusBar = {
      registerIndicator: (id, opts) => statusBar.registerIndicator(`${pluginId}:${id}`, opts),
    };

    this.settings = {
      get: (key) => settings.get(`plugins.${pluginId}.${key}`),
      set: (key, value) => settings.set(`plugins.${pluginId}.${key}`, value),
      onChanged: (key, cb) => settings.onChanged(`plugins.${pluginId}.${key}`, cb),
    };

    this.editor = {
      getContent: () => editor.getContent(),
      getSelection: () => editor.getSelection(),
      insertAtCursor: (text) => editor.insertAtCursor(text),
      onContentChanged: (cb) => editor.onContentChanged(cb),
      // Current tab's file path (null for untitled tabs) — plugins that store
      // sidecar data (comments, snapshots, …) key off this.
      getCurrentFilePath: () => (editor.getCurrentFilePath ? editor.getCurrentFilePath() : null),
      // Scroll the active editor to a 1-based line and place the cursor there
      jumpToLine: (line) => {
        if (editor.jumpToLine) editor.jumpToLine(line);
      },
      // 1-based line of the primary cursor
      getCurrentLine: () => (editor.getCurrentLine ? editor.getCurrentLine() : 1),
    };

    this.events = {
      on: (event, handler) => eventBus.on(event, handler),
      off: (event, handler) => eventBus.off(event, handler),
      emit: (event, payload) => eventBus.emit(event, payload),
      hasHandler: (event) => eventBus.hasHandler(event),
    };

    this.ipc = {
      invoke: (channel, ...args) => ipc.invoke(channel, ...args),
      on: (channel, handler) => ipc.on(channel, handler),
    };

    this.exports = {
      registerPreHook: (handler) => {
        if (exportHooks) exportHooks.preHooks.push(handler);
      },
      registerPostHook: (handler) => {
        if (exportHooks) exportHooks.postHooks.push(handler);
      },
    };

    this.formats = {
      /**
       * Register a plugin-provided export format. It is namespaced as
       * `${pluginId}:${id}` so plugins can't collide with each other or
       * with the built-in Pandoc-backed formats.
       * @param {string} id - Format id, unique within this plugin.
       * @param {object} opts - { label, extension, handler: async (markdownContent, outputPath, options) => void }
       */
      registerExportFormat: (id, opts) => {
        if (formatRegistry) formatRegistry.register(`${pluginId}:${id}`, opts);
      },
    };
  }
}

module.exports = { PluginContext };