/**
 * Node.js 环境下的 API 桥接，替代 window.electronAPI
 */

const path = require('path')
const fs = require('fs')
const os = require('os')
const { spawnSync } = require('child_process')

const projectRoot = path.resolve(__dirname, '..', '..')
const adbInteractPath = path.join(projectRoot, 'nodejs', 'adb', 'adb-interact.js')
const imageMatchScriptPath = path.join(projectRoot, 'python', 'scripts', 'image-match.py')

const config = require(path.join(projectRoot, 'configs', 'config.js'))

function runAdb(action, args = [], deviceId = '') {
  const result = spawnSync('node', [adbInteractPath, action, ...args, deviceId], {
    encoding: 'utf-8',
    timeout: 10000
  })
  return { success: result.status === 0, error: result.stderr }
}

async function sendTap(device, x, y) {
  const r = runAdb('tap', [String(x), String(y)], device)
  return r
}

async function sendSwipe(device, x1, y1, x2, y2, duration) {
  const r = runAdb('swipe-coords', [String(x1), String(y1), String(x2), String(y2), String(duration || 300)], device)
  return r
}

async function sendKeyEvent(device, keyCode) {
  const r = runAdb('keyevent', [String(keyCode)], device)
  return r
}

async function sendText(device, text) {
  const r = runAdb('text', [String(text)], device)
  return r
}

async function matchImageAndGetCoordinate(device, imagePath) {
  const templatePath = path.isAbsolute(imagePath) ? imagePath : path.resolve(projectRoot, imagePath)
  if (!fs.existsSync(templatePath)) {
    return { success: false, error: `模板图片不存在: ${templatePath}` }
  }

  const ts = Date.now()
  const screenshotPath = path.join(os.tmpdir(), `ef-screenshot-${ts}.png`)
  const templateCopyPath = path.join(os.tmpdir(), `ef-template-${ts}.png`)

  try {
    fs.copyFileSync(templatePath, templateCopyPath)
  } catch (e) {
    return { success: false, error: `复制模板失败: ${e.message}` }
  }

  const venvPython = path.join(projectRoot, 'python', 'env', 'Scripts', 'python.exe')
  const hasVenv = fs.existsSync(venvPython)
  const pythonPath = hasVenv
    ? venvPython
    : (config.pythonPath?.path ? path.join(config.pythonPath.path, 'python.exe') : 'python')

  const adbPathRel = config.adbPath?.path || 'lib/scrcpy-adb/adb.exe'
  const adbPath = path.isAbsolute(adbPathRel) ? adbPathRel : path.join(projectRoot, adbPathRel)

  const screenshotPathNorm = screenshotPath.replace(/\\/g, '/')
  const templateCopyPathNorm = templateCopyPath.replace(/\\/g, '/')

  const matchResult = spawnSync(pythonPath, [imageMatchScriptPath, '--adb', adbPath, '--device', device, '--screenshot', screenshotPathNorm, '--template', templateCopyPathNorm], {
    encoding: 'utf-8',
    timeout: 20000,
    env: { ...process.env, PYTHONIOENCODING: 'utf-8' },
    cwd: projectRoot
  })

  try { fs.unlinkSync(screenshotPath) } catch (_) {}
  try { fs.unlinkSync(templateCopyPath) } catch (_) {}

  if (matchResult.status !== 0) {
    const errMsg = (matchResult.stderr || matchResult.stdout || '').trim()
    return { success: false, error: errMsg || '图像匹配失败' }
  }

  let out
  try {
    out = JSON.parse(matchResult.stdout.trim())
  } catch (e) {
    return { success: false, error: `解析匹配结果失败: ${matchResult.stdout}` }
  }

  if (!out.success) {
    return { success: false, error: out.error || '未找到匹配' }
  }

  return {
    success: true,
    coordinate: { x: out.x, y: out.y, width: out.width, height: out.height },
    clickPosition: { x: out.center_x, y: out.center_y }
  }
}

async function findTextAndGetCoordinate(device, targetText) {
  return { success: false, error: 'findTextAndGetCoordinate 需在主进程实现' }
}

async function appendLog(folderPath, message) {
  const logPath = path.join(folderPath, 'log.txt')
  fs.appendFileSync(logPath, message + '\n')
  return Promise.resolve()
}

function readTextFile(filePath) {
  const fullPath = path.isAbsolute(filePath) ? filePath : path.resolve(projectRoot, filePath)
  const content = fs.readFileSync(fullPath, 'utf8')
  return { success: true, content }
}

function writeTextFile(filePath, content) {
  const fullPath = path.isAbsolute(filePath) ? filePath : path.resolve(projectRoot, filePath)
  const dir = path.dirname(fullPath)
  if (!fs.existsSync(dir)) fs.mkdirSync(dir, { recursive: true })
  fs.writeFileSync(fullPath, content)
  return { success: true }
}

async function stub(name) {
  return { success: false, error: `${name} 需在主进程实现` }
}

const nodeApi = {
  sendTap,
  sendSwipe,
  sendKeyEvent,
  sendText,
  matchImageAndGetCoordinate,
  findTextAndGetCoordinate,
  appendLog,
  readTextFile,
  writeTextFile,
  saveChatHistory: () => stub('saveChatHistory'),
  readChatHistory: () => stub('readChatHistory'),
  readAllChatHistory: () => stub('readAllChatHistory'),
  saveChatHistorySummary: () => stub('saveChatHistorySummary'),
  getChatHistorySummary: () => stub('getChatHistorySummary'),
  saveChatHistoryTxt: () => stub('saveChatHistoryTxt'),
  extractChatHistory: () => stub('extractChatHistory'),
  readLastMessage: () => stub('readLastMessage'),
  ocrLastMessage: () => stub('ocrLastMessage'),
  getCachedScreenshot: () => stub('getCachedScreenshot'),
  captureScreenshot: () => stub('captureScreenshot'),
  async readImageFileAsBase64(filePath) {
    try {
      const fullPath = path.isAbsolute(filePath) ? filePath : path.resolve(projectRoot, filePath)
      const buf = fs.readFileSync(fullPath)
      const data = buf.toString('base64')
      return { success: true, data }
    } catch (e) {
      return { success: false, error: e.message }
    }
  },
  matchImageRegionLocation: () => stub('matchImageRegionLocation'),
  cropAndSaveImage: () => stub('cropAndSaveImage'),
  async saveBase64Image(base64, filePath) {
    try {
      const fullPath = path.isAbsolute(filePath) ? filePath : path.resolve(projectRoot, filePath)
      const dir = path.dirname(fullPath)
      if (!fs.existsSync(dir)) fs.mkdirSync(dir, { recursive: true })
      const buf = Buffer.from(base64, 'base64')
      fs.writeFileSync(fullPath, buf)
      return { success: true }
    } catch (e) {
      return { success: false, error: e.message }
    }
  }
}

module.exports = nodeApi