/**
 * Electron Preload Script
 * Exposes safe IPC channels to the renderer via contextBridge.
 */
const { contextBridge, ipcRenderer } = require('electron');

contextBridge.exposeInMainWorld('electronAPI', {
    // Folder selection dialog
    selectFolder: () => ipcRenderer.invoke('select-folder'),

    // Settings
    loadSettings: () => ipcRenderer.invoke('load-settings'),
    saveSettings: (settings) => ipcRenderer.invoke('save-settings', settings),

    // File operations
    readFile: (filePath) => ipcRenderer.invoke('read-file', filePath),
    writeFile: (filePath, content) => ipcRenderer.invoke('write-file', filePath, content),
    moveToArchive: (filePath) => ipcRenderer.invoke('move-to-archive', filePath),

    // Watcher control
    startWatcher: (config) => ipcRenderer.invoke('start-watcher', config),
    stopWatcher: () => ipcRenderer.invoke('stop-watcher'),
    pauseWatcher: () => ipcRenderer.invoke('pause-watcher'),
    resumeWatcher: () => ipcRenderer.invoke('resume-watcher'),
    getWatcherStatus: () => ipcRenderer.invoke('get-watcher-status'),

    // Werksnummer Watcher control
    startWerksWatcher: (config) => ipcRenderer.invoke('start-werks-watcher', config),
    stopWerksWatcher: () => ipcRenderer.invoke('stop-werks-watcher'),
    pauseWerksWatcher: () => ipcRenderer.invoke('pause-werks-watcher'),
    resumeWerksWatcher: () => ipcRenderer.invoke('resume-werks-watcher'),
    getWerksWatcherStatus: () => ipcRenderer.invoke('get-werks-watcher-status'),

    // Outbound Watcher control
    startOutboundWatcher: (config) => ipcRenderer.invoke('start-outbound-watcher', config),
    stopOutboundWatcher: () => ipcRenderer.invoke('stop-outbound-watcher'),
    pauseOutboundWatcher: () => ipcRenderer.invoke('pause-outbound-watcher'),
    resumeOutboundWatcher: () => ipcRenderer.invoke('resume-outbound-watcher'),
    getOutboundWatcherStatus: () => ipcRenderer.invoke('get-outbound-watcher-status'),

    // Watcher events (from main → renderer)
    onFileDetected: (callback) => ipcRenderer.on('watcher-file-detected', (_, data) => callback(data)),
    onWatcherError: (callback) => ipcRenderer.on('watcher-error', (_, data) => callback(data)),
    onWatcherReady: (callback) => ipcRenderer.on('watcher-ready', (_, data) => callback(data)),

    // Outbound Watcher events
    onOutboundFileDetected: (callback) => ipcRenderer.on('outbound-watcher-file-detected', (_, data) => callback(data)),
    onOutboundWatcherError: (callback) => ipcRenderer.on('outbound-watcher-error', (_, data) => callback(data)),
    onOutboundWatcherReady: (callback) => ipcRenderer.on('outbound-watcher-ready', (_, data) => callback(data)),

    // Werksnummer Watcher events
    onWerksFileProcessed: (callback) => ipcRenderer.on('werks-watcher-success', (_, data) => callback(data)),
    onWerksWatcherError: (callback) => ipcRenderer.on('werks-watcher-error', (_, data) => callback(data)),
    onWerksWatcherReady: (callback) => ipcRenderer.on('werks-watcher-ready', (_, data) => callback(data)),

    // Conversion History DB
    dbInsert: (record) => ipcRenderer.invoke('db-insert', record),
    dbGetAll: (params) => ipcRenderer.invoke('db-get-all', params),
    dbGetById: (id) => ipcRenderer.invoke('db-get-by-id', id),
    dbDelete: (id) => ipcRenderer.invoke('db-delete', id),
    dbGetStats: () => ipcRenderer.invoke('db-get-stats'),

    // Configuration DB
    dbInsertConfig: (configData) => ipcRenderer.invoke('db-insert-config', configData),
    dbGetConfig: () => ipcRenderer.invoke('db-get-config'),

    // EDIFACT Validation & Alternative Parser (ts-edifact library, Electron only)
    validateEdifact: (content) => ipcRenderer.invoke('validate-edifact', content),
    parseEdifactLib: (content) => ipcRenderer.invoke('parse-edifact-lib', content)
});