/**
 * adb method: click — 按坐标或变量位置点击
 * 入参由 variable-parser 在调用前解析，inVars[0] 可能已是解析后的坐标值（JSON 字符串、"x,y" 或对象），也可能仍是变量名需从 variableContext 读取。
 */
async function run(action, ctx) {
  const { device, variableContext, api, extractVarName, resolveValue } = ctx
  const inVars = action.inVars || []
  let position = null
  if (inVars.length > 0) {
    const raw = inVars[0]
    // 已是解析后的坐标值（variable-parser 已替换）：对象、JSON 串或 "x,y"
    if (typeof raw === 'object' && raw !== null && (raw.x !== undefined || (Array.isArray(raw) && raw.length >= 2))) position = raw
    else if (typeof raw === 'string' && raw !== '' && (raw.trim().startsWith('{') || /^\s*-?\d+\s*,\s*-?\d+\s*$/.test(raw.trim()))) position = raw
    else position = variableContext[extractVarName(raw)]
  }
  if (!position && action.target) position = resolveValue(action.target, variableContext)
  if (position == null || position === '') return { success: false, error: 'click 操作缺少位置参数（位置变量为空或匹配未找到）' }
  if (typeof position === 'string') {
    try {
      position = JSON.parse(position)
    } catch (e) {
      const parts = position.split(',')
      if (parts.length === 2) {
        const x = parseFloat(parts[0].trim())
        const y = parseFloat(parts[1].trim())
        if (!isNaN(x) && !isNaN(y)) position = { x: Math.round(x), y: Math.round(y) }
        else return { success: false, error: `click 操作的位置格式错误，无法解析字符串: ${position}` }
      } else return { success: false, error: `click 操作的位置格式错误，无法解析字符串: ${position}` }
    }
  }
  if (Array.isArray(position) && position.length >= 2) position = { x: position[0], y: position[1] }
  if (position?.topLeft && position?.bottomRight) {
    position = {
      x: Math.round((position.topLeft.x + position.bottomRight.x) / 2),
      y: Math.round((position.topLeft.y + position.bottomRight.y) / 2),
    }
  }
  if (!position || typeof position !== 'object' || position.x === undefined || position.y === undefined)
    return { success: false, error: 'click 操作的位置格式错误，需要 {x, y} 对象' }
  if (!api?.sendTap) return { success: false, error: '点击 API 不可用' }
  const tapResult = await api.sendTap(device, position.x, position.y)
  if (!tapResult.success) return { success: false, error: `点击失败: ${tapResult.error != null ? tapResult.error : 'unknown'}` }
  return { success: true }
}

module.exports = { run }