/**
 * 供 type: fun 的 method 桥接：adb-* → adb-parser；json-to-arr / json-json-to-arr → json-to-arr.js
 */
const path = require('path')

const adbParserExecute = require(path.join(__dirname, 'adb', 'adb-parser.js')).execute

const ADB_SUBMETHODS = new Set([
  'input',
  'click',
  'locate',
  'swipe',
  'scroll',
  'keyevent',
  'press',
  'string-press',
  'send-img-to-device',
])

function buildSyntheticAdbAction (action, adbMethod) {
  return {
    type: 'adb',
    method: adbMethod,
    inVars: Array.isArray(action.inVars) ? action.inVars : [],
    outVars: Array.isArray(action.outVars) ? action.outVars : [],
    target: action.target,
    value: action.value,
    variable: action.variable,
    clear: action.clear,
    area: action.area,
    avatar: action.avatar,
  }
}

function buildAdbExecuteCtx (ctx, device, folderPath) {
  const resolution = ctx.resolution || { width: 1080, height: 1920 }
  return {
    device,
    folderPath,
    resolution,
    variableContext: ctx.variableContext,
    api: ctx.electronAPI,
    extractVarName: ctx.extractVarName,
    resolveValue: ctx.resolveValue,
    logOutVars: ctx.logOutVars,
    DEFAULT_SCROLL_DISTANCE: ctx.DEFAULT_SCROLL_DISTANCE ?? 100,
  }
}

/**
 * @returns {Promise<null|{success:boolean}>} null 表示非桥接 method，由 run() 继续分发
 */
async function runFunBridgedMethod (actionType, action, ctx, device, folderPath) {
  if (typeof actionType !== 'string') return null

  if (actionType.startsWith('adb-')) {
    const sub = actionType.slice(4)
    if (!ADB_SUBMETHODS.has(sub)) {
      return { success: false, error: `未知的 fun.method adb 子命令: ${sub}（支持: ${[...ADB_SUBMETHODS].join(', ')}）` }
    }
    const syn = buildSyntheticAdbAction(action, sub)
    const adbCtx = buildAdbExecuteCtx(ctx, device, folderPath)
    return adbParserExecute(syn, adbCtx)
  }

  if (actionType === 'json-to-arr' || actionType === 'json-json-to-arr') {
    const { executeJsonToArr } = require(path.join(__dirname, 'json', 'json-to-arr.js'))
    const jsonString = action.inVars && action.inVars.length > 0 ? action.inVars[0] : undefined
    const result = await executeJsonToArr({ jsonString })
    if (!result.success) return { success: false, error: result.error }
    const { extractVarName, variableContext, logOutVars } = ctx
    const outputVarName =
      action.outVars && action.outVars.length > 0 ? extractVarName(String(action.outVars[0]).trim()) : null
    if (outputVarName && Array.isArray(result.result)) variableContext[outputVarName] = result.result
    await logOutVars(action, variableContext, folderPath)
    return { success: true, ...result }
  }

  return null
}

module.exports = { runFunBridgedMethod, ADB_SUBMETHODS }