import { get, postJ, putJ } from "@/utils/request";
import { processInstanceCreateAPI, processInstancePage } from "@/api/wt/index.js";
import { withTimeout } from "@/api/hr/attendance";
import Vue from "vue";

// 发起审批的请求超时（ms）：避免 utils/request 非 JSON 响应下永远挂起
const REQUEST_TIMEOUT = 12000;

// 表单本地 type → 接口 applyType 枚举（HR 侧仅保留以下 5 类）
export const ATTENDANCE_APPLY_TYPE_MAP = {
  leave: "LEAVE",
  overtime: "OVERTIME",
  field: "OUTING", // 外勤
  trip: "TRIP",
  check: "CARD_REPAIR",
};

// 表单本地 type → 流程业务类型码（与 api/hr/bpm.js 的 BUSINESS_TYPE_LABELS 对齐）
export const ATTENDANCE_BUSINESS_TYPE = {
  leave: "ATTENDANCE_LEAVE",
  overtime: "ATTENDANCE_OVERTIME",
  field: "ATTENDANCE_OUTING",
  trip: "ATTENDANCE_TRIP",
  check: "ATTENDANCE_CARD_REPAIR",
};

/**
 * 考勤申请审批流程标识 —— 五类申请各用各的，与流程定义 key 一一对应：
 *   请假  → hr_attendance_leave_apply
 *   加班  → hr_attendance_overtime_apply
 *   外勤  → hr_attendance_outing_apply
 *   出差  → hr_attendance_trip_apply
 *   补卡  → hr_attendance_card_repair_apply
 */
export const ATTENDANCE_APPROVAL_BUSINESS_KEYS = {
  leave: "hr_attendance_leave_apply",
  overtime: "hr_attendance_overtime_apply",
  field: "hr_attendance_outing_apply", // 外勤
  trip: "hr_attendance_trip_apply",
  check: "hr_attendance_card_repair_apply",
};

export const ATTENDANCE_APPLY_TYPE_KEYS = Object.keys(ATTENDANCE_APPLY_TYPE_MAP);

// 表单 leaveType 中文标签 → 接口 leaveType 枚举
export const LEAVE_TYPE_MAP = {
  年假: "ANNUAL",
  事假: "PERSONAL",
  病假: "SICK",
  调休假: "COMPENSATORY",
  婚假: "MARRIAGE",
  产假: "MATERNITY",
  陪产假: "PATERNITY",
  丧假: "BEREAVEMENT",
  工伤假: "WORK_INJURY",
  其他: "OTHER",
};

// 接口 leaveType 枚举 → 中文标签（详情回填用，与 LEAVE_TYPE_MAP 互为逆映射）
export const LEAVE_TYPE_LABEL = Object.keys(LEAVE_TYPE_MAP).reduce((acc, key) => {
  acc[LEAVE_TYPE_MAP[key]] = key;
  return acc;
}, {});

// 补卡类型枚举（对应后端 repairType 字段），仅 CARD_REPAIR 申请使用
export const REPAIR_TYPE_LABEL = {
  MISSING_IN: "上班漏打卡",
  MISSING_OUT: "下班漏打卡",
  LATE: "迟到补卡",
  EARLY: "早退补卡",
  ABSENT: "缺勤补卡",
  OTHER: "其他补卡",
  NORMAL: "正常补卡",
};
export const REPAIR_TYPE_OPTIONS = Object.keys(REPAIR_TYPE_LABEL);

const DEFAULT_START_TIME = "08:30";
const DEFAULT_END_TIME = "17:30";

export function combineDateTime(dateStr, timeStr) {
  if (!dateStr) return "";
  if (!timeStr) return `${dateStr}T00:00:00.000`;
  return `${dateStr}T${timeStr}:00.000`;
}

function buildRangeTime(dateStr, timeStr) {
  if (!dateStr) return "";
  return combineDateTime(dateStr, timeStr || "00:00");
}

/** 时长下限（分钟）：不足 0.5 小时按 0.5 小时计 */
export const MIN_DURATION_MINUTES = 30;

/**
 * 按起止日期时间计算时长（分钟）：
 *   - 不足 30 分钟（0.5 小时）按 30 分钟计；
 *   - 起止无效或结束早于开始时返回 0（提交前校验会拦截该情况）。
 */
export function computeDurationMinutes(startDate, startTime, endDate, endTime) {
  if (!startDate || !endDate) return 0;
  const start = new Date(`${startDate}T${startTime || "00:00"}:00`);
  const end = new Date(`${endDate}T${endTime || "00:00"}:00`);
  if (isNaN(start.getTime()) || isNaN(end.getTime())) return 0;
  if (end < start) return 0;
  return Math.max(MIN_DURATION_MINUTES, Math.floor((end.getTime() - start.getTime()) / 60000));
}

/** 拆分接口时间值为 { date, time }（time 精确到分钟） */
export function splitDateTime(value) {
  const text = String(value || "").replace("T", " ").trim();
  if (!text) return { date: "", time: "" };
  const parts = text.split(" ");
  return { date: parts[0] || "", time: (parts[1] || "").slice(0, 5) };
}

/**
 * 接口数据 → 表单数据（详情/编辑回填）
 * 入参可以是考勤申请详情 VO，也可以是流程发起时透传的 formVariables（字段同构）
 */
export function hydrateAttendanceForm(source = {}, type = "leave") {
  const src = source || {};
  const start = splitDateTime(src.startTime);
  const end = splitDateTime(src.endTime);
  const attachmentIds = String(src.attachmentFileIds || "")
    .split(",")
    .map((item) => item.trim())
    .filter(Boolean);

  const base = {
    reason: src.reason || "",
    attachmentIds,
  };

  if (type === "check") {
    const punch = splitDateTime(src.repairPunchTime || src.startTime);
    return Object.assign(base, {
      startDate: punch.date || start.date,
      repairType: src.repairType || "",
      repairTime: punch.time || start.time,
    });
  }

  const form = Object.assign(base, {
    startDate: start.date,
    startTime: start.time || DEFAULT_START_TIME,
    endDate: end.date || start.date,
    endTime: end.time || DEFAULT_END_TIME,
  });
  if (type === "leave") {
    const code = String(src.leaveType || "").toUpperCase();
    form.leaveType = code ? LEAVE_TYPE_LABEL[code] || "" : "";
  }
  return form;
}

/**
 * 把表单数据按 applyType 映射成 /hr/attendance/applications 接口参数。
 * @param {object} form 表单数据
 * @param {string} type 表单类型（leave / overtime / field / trip / check）
 * @param {object} userRaw storage 中的 userInfo
 * @param {string} attachmentFileIds 已上传附件的 id，英文逗号分隔
 */
export function buildAttendancePayload(form, type, userRaw, attachmentFileIds) {
  const applyType = ATTENDANCE_APPLY_TYPE_MAP[type];
  if (!applyType) return null;

  const user = userRaw || {};
  const userId = user.userId || user.id || "";
  const userName = user.userName || user.name || "";
  const base = {
    userId,
    userName,
    applyType,
    attachmentFileIds: attachmentFileIds || "",
  };

  switch (type) {
    case "leave":
      return Object.assign({}, base, {
        leaveType: LEAVE_TYPE_MAP[form.leaveType] || "OTHER",
        startTime: buildRangeTime(form.startDate, form.startTime || DEFAULT_START_TIME),
        endTime: buildRangeTime(form.endDate, form.endTime || DEFAULT_END_TIME),
        durationMinutes: computeDurationMinutes(
          form.startDate,
          form.startTime || DEFAULT_START_TIME,
          form.endDate,
          form.endTime || DEFAULT_END_TIME
        ),
        reason: form.reason,
      });
    case "overtime":
      return Object.assign({}, base, {
        overtimeType: "WORKDAY",
        startTime: buildRangeTime(form.startDate, form.startTime || "18:00"),
        endTime: buildRangeTime(form.endDate, form.endTime || "20:00"),
        durationMinutes: computeDurationMinutes(
          form.startDate,
          form.startTime || "18:00",
          form.endDate,
          form.endTime || "20:00"
        ),
        reason: form.reason,
      });
    case "trip":
      return Object.assign({}, base, {
        startTime: buildRangeTime(form.startDate, form.startTime || DEFAULT_START_TIME),
        endTime: buildRangeTime(form.endDate, form.endTime || DEFAULT_END_TIME),
        durationMinutes: computeDurationMinutes(
          form.startDate,
          form.startTime || DEFAULT_START_TIME,
          form.endDate,
          form.endTime || DEFAULT_END_TIME
        ),
        needPunch: 0,
        reason: form.reason,
      });
    case "field":
      return Object.assign({}, base, {
        startTime: buildRangeTime(form.startDate, form.startTime || DEFAULT_START_TIME),
        endTime: buildRangeTime(form.endDate, form.endTime || DEFAULT_END_TIME),
        durationMinutes: computeDurationMinutes(
          form.startDate,
          form.startTime || DEFAULT_START_TIME,
          form.endDate,
          form.endTime || DEFAULT_END_TIME
        ),
        syncAsPunch: 0,
        reason: form.reason,
      });
    case "check":
      return Object.assign({}, base, {
        startTime: combineDateTime(form.startDate, form.repairTime),
        repairPunchTime: combineDateTime(form.startDate, form.repairTime),
        repairType: form.repairType,
        reason: form.reason,
      });
    default:
      return null;
  }
}

/**
 * 提取建单接口返回的申请主键（发起审批的 businessId 必须是主键本身）。
 * 兼容后端返回：标量（"1234567890" / 1234567890）、{ id } / { applicationId } /
 * { businessId } / { data: { id } } 等结构。
 */
export function pickApplicationId(data) {
  if (data === undefined || data === null || data === "") return "";
  if (typeof data === "string" || typeof data === "number") return String(data);
  const keys = ["id", "applicationId", "businessId", "pkId"];
  for (const key of keys) {
    const value = data[key];
    if (value !== undefined && value !== null && value !== "") return String(value);
  }
  if (data.data) return pickApplicationId(data.data);
  return "";
}

/**
 * 提交考勤类申请（请假 / 加班 / 出差 / 外出 / 补卡）
 * POST /hr/attendance/applications
 * @returns 接口原始返回（申请主键用 pickApplicationId 提取）
 */
export async function submitAttendanceApplication(payload, loding = true) {
  const body = Object.assign({}, payload);
  if (!body.applyType) body.applyType = "CARD_REPAIR";
  const res = await withTimeout(
    postJ(Vue.prototype.apiUrl + "/hr/attendance/applications", body, loding),
    REQUEST_TIMEOUT,
    "提交申请超时，请检查网络后重试（申请可能已保存，请到“我的申请”确认）"
  );
  if (res.code == 0) return res.data || {};
  return Promise.reject(new Error(res.message || "申请提交失败"));
}

/**
 * 考勤申请详情
 * GET /hr/attendance/applications/{id}
 * 注：后端若未开放该查询，调用方应回退到流程实例的 formVariables（见 loadAttendanceApplicationForEdit）
 */
export async function getAttendanceApplicationDetail(id, loding = false) {
  if (id === undefined || id === null || id === "") return null;
  const res = await get(
    Vue.prototype.apiUrl + `/hr/attendance/applications/${encodeURIComponent(String(id))}`,
    {},
    loding
  );
  if (res.code == 0) return res.data || null;
  return Promise.reject(new Error(res.message || "查询考勤申请详情失败"));
}

/**
 * 修改被驳回的考勤申请
 * PUT /hr/attendance/applications/{id}
 */
export async function updateAttendanceApplication(id, payload, loding = false) {
  if (id === undefined || id === null || id === "") throw new Error("缺少申请主键");
  const body = Object.assign({}, payload);
  if (!body.applyType) body.applyType = "CARD_REPAIR";
  const res = await putJ(
    Vue.prototype.apiUrl + `/hr/attendance/applications/${encodeURIComponent(String(id))}`,
    body,
    loding
  );
  if (res.code == 0) return res.data;
  return Promise.reject(new Error(res.message || "考勤申请修改失败"));
}

/**
 * 编辑态取数：优先用考勤申请详情接口，失败时回退到流程实例的 formVariables
 * （发起审批时已把整份载荷作为 variables 透传，字段与详情 VO 同构）
 */
export async function loadAttendanceApplicationForEdit(businessId, processInstanceId = "") {
  if (businessId !== undefined && businessId !== null && businessId !== "") {
    try {
      const detail = await getAttendanceApplicationDetail(businessId, false);
      if (detail && (detail.startTime || detail.reason || detail.applyType)) return detail;
    } catch (error) {
      // 详情接口不可用时走流程变量兜底
    }
  }
  if (!processInstanceId) return null;
  const res = await get(
    Vue.prototype.apiUrl +
      `/bpm/process-instance/get?id=${encodeURIComponent(String(processInstanceId))}`,
    {},
    false
  );
  if (res.code == 0) return (res.data && res.data.formVariables) || null;
  return null;
}

/**
 * 发起考勤申请审批流程。
 *
 * 五类申请各用各的流程标识（ATTENDANCE_APPROVAL_BUSINESS_KEYS[type]），
 * 与其它业务流程一致走两段式：
 *   1. GET 流程定义列表（按 key 匹配）取 processDefinition.id；
 *   2. POST /bpm/process-instance/create，带 processDefinitionId。
 * businessId 为考勤申请主键；variables 同时作为审批详情页的表单数据来源。
 *
 * @param {string} businessId 考勤申请主键
 * @param {object} variables 申请载荷（含 businessType / businessName / deptName 等）
 * @param {boolean} loding 历史参数（loading 由调用方控制），保留以兼容既有调用方式
 * @param {string} type 表单类型（leave / overtime / field / trip / check），决定用哪个流程标识
 */
export async function startAttendanceApproval(businessId, variables = {}, loding = false, type = "") {
  if (!businessId) throw new Error("缺少申请主键，无法发起审批");
  const businessKey = ATTENDANCE_APPROVAL_BUSINESS_KEYS[type];
  if (!businessKey) throw new Error(`未知的考勤申请类型：${type || "(空)"}，无法发起审批`);

  // 两段式第 1 步：按 key 查流程定义，取最新一条的 processDefinition.id
  const page = await withTimeout(
    processInstancePage(
      { pageNo: 1, pageSize: 1, reset: true, key: businessKey },
      false
    ),
    REQUEST_TIMEOUT,
    "查询审批流程定义超时，请检查网络后重试"
  );
  const first = page && page.list && page.list[0];
  const processDefinitionId = first && first.processDefinition ? first.processDefinition.id : "";
  if (!processDefinitionId) {
    throw new Error(`未匹配到审批流程（${businessKey}），请联系管理员配置流程定义`);
  }

  // 两段式第 2 步：发起流程实例
  const params = {
    businessId: String(businessId),
    businessKey,
    formCreateUserId: variables.userId || "",
    processDefinitionId,
    variables,
  };
  console.log(
    "[考勤审批] POST /bpm/process-instance/create:",
    type || variables.businessType || "-",
    JSON.stringify(params)
  );
  return withTimeout(
    processInstanceCreateAPI(params, false),
    REQUEST_TIMEOUT,
    `发起审批超时（${businessKey}），请到“我的申请”确认是否已提交`
  );
}