// HR 考勤工具集
// 由 kd-aiot-frontend-hr-H5 的 src/utils/attendance-time.ts + src/utils/location.ts
// 以及 src/api/attendance.ts 中的纯函数部分迁移而来（Vue2 / JS 写法）

// ============ 枚举 ============
export const HOLIDAY_DAY_TYPE = {
  LEGAL_HOLIDAY: "LEGAL_HOLIDAY",
  COMPENSATORY_WORKDAY: "COMPENSATORY_WORKDAY",
  COMPENSATORY_RESTDAY: "COMPENSATORY_RESTDAY",
};

export const HOLIDAY_SOURCE_TYPE = {
  SYSTEM: "SYSTEM",
  EXTERNAL: "EXTERNAL",
  MANUAL: "MANUAL",
};

const WEEKDAY_KEYWORDS = {
  周一: 1, 周二: 2, 周三: 3, 周四: 4, 周五: 5, 周六: 6, 周日: 7,
  星期一: 1, 星期二: 2, 星期三: 3, 星期四: 4, 星期五: 5, 星期六: 6, 星期日: 7,
  Monday: 1, Tuesday: 2, Wednesday: 3, Thursday: 4,
  Friday: 5, Saturday: 6, Sunday: 7,
  Mon: 1, Tue: 2, Wed: 3, Thu: 4, Fri: 5, Sat: 6, Sun: 7,
};

const WEEKDAY_LABELS = {
  1: "周一", 2: "周二", 3: "周三", 4: "周四", 5: "周五", 6: "周六", 7: "周日",
};

const pad2 = (n) => String(n).padStart(2, "0");

// ============ 日期格式化 ============
/** yyyy-MM */
export function formatMonth(date) {
  const d = date instanceof Date ? date : new Date(date);
  return `${d.getFullYear()}-${pad2(d.getMonth() + 1)}`;
}

/**
 * 健壮的 yyyy-MM-dd。
 * 兼容 Date / 时间戳 / "yyyy-MM-dd" / "yyyy-MM-dd HH:mm:ss" / ISO 串，
 * 非法值返回空字符串（调用方据此跳过该条数据）。
 */
export function formatDateKey(value) {
  if (value === null || value === undefined || value === "") return "";
  let d;
  if (value instanceof Date) {
    d = value;
  } else if (typeof value === "number") {
    d = new Date(value);
  } else {
    const raw = String(value);
    if (/^\d{4}-\d{2}-\d{2}$/.test(raw)) return raw;
    d = new Date(/[T ]/.test(raw) ? raw : raw.replace(/-/g, "/"));
  }
  if (!d || isNaN(d.getTime())) return "";
  return `${d.getFullYear()}-${pad2(d.getMonth() + 1)}-${pad2(d.getDate())}`;
}

/** 解析打卡时间：支持 Date / 时间戳 / "HH:mm" / "HH:mm:ss" / 日期串 */
export function parsePunchTime(value) {
  if (!value) return null;
  if (value instanceof Date) return isNaN(value.getTime()) ? null : value;
  if (typeof value === "number") {
    const d = new Date(value);
    return isNaN(d.getTime()) ? null : d;
  }
  const raw = String(value);
  if (/[T ]/.test(raw)) {
    const d = new Date(raw);
    return isNaN(d.getTime()) ? null : d;
  }
  const m = raw.match(/^(\d{1,2}):(\d{2})(?::(\d{2}))?$/);
  if (m) {
    const now = new Date();
    return new Date(
      now.getFullYear(), now.getMonth(), now.getDate(),
      Number(m[1]), Number(m[2]), Number(m[3] || 0)
    );
  }
  const d = new Date(raw.replace(/-/g, "/"));
  return isNaN(d.getTime()) ? null : d;
}

/** 解析成 yyyy-MM-dd 键；失败返回 null */
export function punchDateKey(value) {
  const d = parsePunchTime(value);
  if (!d) return null;
  return `${d.getFullYear()}-${pad2(d.getMonth() + 1)}-${pad2(d.getDate())}`;
}

/** end - start 分钟数，负数截断为 0 */
export function minutesBetween(start, end) {
  const s = parsePunchTime(start);
  const e = parsePunchTime(end);
  if (!s || !e) return 0;
  const diff = Math.floor((e.getTime() - s.getTime()) / 60000);
  return diff > 0 ? diff : 0;
}

/**
 * 本地补偿迟到 / 早退 / 工时（后端 daily 接口常不下发达这仨事实字段）。
 * 跨日补卡（actualOut 日期 ≠ 当天）按当天 23:59 截断工时，且不算早退。
 */
export function computeDailyMinutes(params) {
  const { actualIn, actualOut, scheduledStart, scheduledEnd, dateStr } = params || {};
  let lateMinutes = 0;
  let earlyMinutes = 0;
  let actualWorkMinutes = 0;
  let isCrossDayRepair = false;

  const outDateKey = punchDateKey(actualOut);
  if (actualOut && dateStr && outDateKey && outDateKey !== dateStr) {
    isCrossDayRepair = true;
  }

  if (actualIn && scheduledStart) {
    const inDate = parsePunchTime(actualIn);
    if (inDate) {
      const parts = String(scheduledStart).split(":");
      const scheduled = new Date(
        inDate.getFullYear(), inDate.getMonth(), inDate.getDate(),
        Number(parts[0]), Number(parts[1])
      );
      const diff = Math.floor((inDate.getTime() - scheduled.getTime()) / 60000);
      if (diff > 0) lateMinutes = diff;
    }
  }

  if (actualOut && scheduledEnd && !isCrossDayRepair) {
    const outDate = parsePunchTime(actualOut);
    if (outDate) {
      const parts = String(scheduledEnd).split(":");
      const scheduled = new Date(
        outDate.getFullYear(), outDate.getMonth(), outDate.getDate(),
        Number(parts[0]), Number(parts[1])
      );
      const diff = Math.floor((scheduled.getTime() - outDate.getTime()) / 60000);
      if (isFinite(diff) && diff > 0) earlyMinutes = diff;
    }
  }

  if (actualIn && actualOut) {
    const s = parsePunchTime(actualIn);
    const e = parsePunchTime(actualOut);
    if (s && e && e > s) {
      if (isCrossDayRepair) {
        const dayEnd = new Date(s.getFullYear(), s.getMonth(), s.getDate(), 23, 59, 59);
        actualWorkMinutes = Math.floor((dayEnd.getTime() - s.getTime()) / 60000);
      } else {
        actualWorkMinutes = Math.floor((e.getTime() - s.getTime()) / 60000);
      }
    }
  }

  return { lateMinutes, earlyMinutes, actualWorkMinutes, isCrossDayRepair };
}

/** 跨日补卡的下班时间显示成 "次日 HH:mm" */
export function formatPunchTimeWithDate(value, baseDateStr) {
  if (!value) return "";
  const t = punchDateKey(value);
  const base = baseDateStr || "";
  const m = String(value).match(/(\d{1,2}:\d{2})/);
  const hm = m ? m[1] : String(value);
  if (!t || !base || t === base) return hm;
  return `次日 ${hm}`;
}

// ============ 打卡类型（上班卡 / 下班卡）判定 ============
/**
 * 时间串 → 当天分钟数（0~1439）。
 * 兼容 "HH:mm" / "HH:mm:ss" / "yyyy-MM-dd HH:mm:ss" / ISO（取第一段 HH:mm）；
 * 非法值返回 null。
 */
export function minutesOfDay(value) {
  if (!value) return null;
  const m = String(value).match(/(\d{1,2}):(\d{2})/);
  if (!m) return null;
  const h = Number(m[1]);
  const mi = Number(m[2]);
  if (!isFinite(h) || !isFinite(mi) || h > 23 || mi > 59) return null;
  return h * 60 + mi;
}

/** 分钟数 → "HH:mm" */
export function formatMinutesOfDay(minutes) {
  if (minutes === null || minutes === undefined || !isFinite(minutes)) return "";
  const m = ((Math.round(minutes) % 1440) + 1440) % 1440;
  return `${String(Math.floor(m / 60)).padStart(2, "0")}:${String(m % 60).padStart(2, "0")}`;
}

/** 拿不到班次时间时的默认「上午结束」分界 */
export const DEFAULT_HALF_DAY_END_MINUTES = 12 * 60;

/**
 * 「上班卡」的有效截止分界（分钟数）。
 * 过了这个点还没打上班卡 → 视为忘打卡，之后点击打卡按「下班卡」处理（上班卡需走补卡流程）。
 * 分界规则（2026-10-23 用户口径）：规则里配置了上午下班时间用配置值，否则固定 12:00。
 * shiftStart / shiftEnd 参数保留兼容旧调用，不再参与计算。
 */
export function resolvePunchInDeadline(shiftStart, shiftEnd, halfDayEnd) {
  const explicit = minutesOfDay(halfDayEnd);
  if (explicit !== null) return explicit;
  return DEFAULT_HALF_DAY_END_MINUTES;
}

/**
 * 判定本次该打「上班卡」还是「下班卡」。
 *
 * - 上下班都打过        → "DONE"
 * - 已打上班未打下班    → "OUT"
 * - 都没打：已过上班卡截止分界（规则配置的上午下班时间，未配置则 12:00）→ "OUT"，否则 "IN"
 *   （2026-10-23 用户口径：12 点之前是上班打卡，之后是下班打卡，不再按班次中点算）
 *
 * @param {object} params
 * @param {string} [params.actualIn]   已记录的上班打卡时间
 * @param {string} [params.actualOut]  已记录的下班打卡时间
 * @param {string} [params.shiftStart] 班次上班时间（保留兼容，不参与分界计算）
 * @param {string} [params.shiftEnd]   班次下班时间（保留兼容，不参与分界计算）
 * @param {string} [params.halfDayEnd] 规则里配置的上午下班时间，优先级最高
 * @param {Date}   [params.now]        当前时间，默认 new Date()
 * @returns {"IN"|"OUT"|"DONE"}
 */
export function resolvePunchType(params = {}) {
  const { actualIn, actualOut } = params;
  if (actualIn && actualOut) return "DONE";
  if (actualIn) return "OUT";

  const now = params.now instanceof Date ? params.now : new Date();
  const nowMinutes = now.getHours() * 60 + now.getMinutes();

  const explicit = minutesOfDay(params.halfDayEnd);
  return nowMinutes >= (explicit !== null ? explicit : DEFAULT_HALF_DAY_END_MINUTES)
    ? "OUT"
    : "IN";
}

/**
 * 判断当前是否属于「提前打下班卡」（已打上班卡、未打下班卡、还没到班次下班时间）。
 * 这种情况不拦截打卡，但要提示「记为早退」并二次确认。
 *
 * @param {object} params
 * @param {string} [params.actualIn]  已记录的上班打卡时间（必须已打上班卡才可能早退）
 * @param {string} [params.actualOut] 已记录的下班打卡时间
 * @param {string} [params.shiftEnd]  班次下班时间（HH:mm 或含时间的任意串）
 * @param {Date}   [params.now]       当前时间，默认 new Date()
 * @returns {{early: boolean, endTime: string}} early 是否提前打下班卡；endTime 班次下班时间（HH:mm）
 */
export function resolveEarlyOut(params = {}) {
  const { actualIn, actualOut, shiftEnd } = params;
  if (!actualIn || actualOut) return { early: false, endTime: "" };
  const endMinutes = minutesOfDay(shiftEnd);
  if (endMinutes === null) return { early: false, endTime: "" };
  const d = params.now instanceof Date ? params.now : new Date();
  const nowMinutes = d.getHours() * 60 + d.getMinutes();
  return {
    early: nowMinutes < endMinutes,
    endTime: formatMinutesOfDay(endMinutes),
  };
}

// ============ 周班次表解析 ============
const SHIFT_RANGE_RE = /(?:(.+?)\s*)?[（(]\s*(\d{1,2}:\d{2}(?::\d{2})?)\s*[-~到至]\s*(\d{1,2}:\d{2}(?::\d{2})?)\s*[)）]/;
const TIME_RANGE_ONLY_RE = /(\d{1,2}:\d{2}(?::\d{2})?)\s*[-~到至]\s*(\d{1,2}:\d{2}(?::\d{2})?)/;

function buildRestStub(i) {
  return {
    weekday: i,
    weekdayLabel: WEEKDAY_LABELS[i],
    isRestDay: true,
    shiftName: "",
    segments: [],
  };
}

/**
 * 解析后端 shiftTimeSummary（如 "周一：行政班(08:30-17:30)；周六：休息"）
 * 为 7 项（周一→周日）班次数组。
 */
export function parseShiftWeeklySummary(summary) {
  if (!summary || typeof summary !== "string") {
    return [1, 2, 3, 4, 5, 6, 7].map(buildRestStub);
  }
  const byWeekday = {};
  summary
    .split(/[；;]/)
    .map((s) => s.trim())
    .filter(Boolean)
    .forEach((part) => {
      const m = part.match(/^([^：:]+)[：:]\s*(.*)$/);
      if (!m) return;
      const weekday = WEEKDAY_KEYWORDS[m[1].trim()];
      if (!weekday) return;
      const content = m[2].trim();

      if (/^休(息|息日)?$/.test(content)) {
        byWeekday[weekday] = buildRestStub(weekday);
        return;
      }
      const withName = content.match(SHIFT_RANGE_RE);
      if (withName) {
        byWeekday[weekday] = {
          weekday,
          weekdayLabel: WEEKDAY_LABELS[weekday],
          isRestDay: false,
          shiftName: (withName[1] || "").trim(),
          segments: [{ start: withName[2].slice(0, 5), end: withName[3].slice(0, 5), raw: content }],
        };
        return;
      }
      const bare = content.match(TIME_RANGE_ONLY_RE);
      if (bare) {
        byWeekday[weekday] = {
          weekday,
          weekdayLabel: WEEKDAY_LABELS[weekday],
          isRestDay: false,
          shiftName: "",
          segments: [{ start: bare[1].slice(0, 5), end: bare[2].slice(0, 5), raw: content }],
        };
      }
    });

  const result = [];
  for (let i = 1; i <= 7; i++) result.push(byWeekday[i] || buildRestStub(i));
  return result;
}

/** 按日期取周班次表中的那一天（周日 → 索引 6） */
export function getShiftForDate(dateStr, schedule) {
  if (!dateStr || !Array.isArray(schedule) || schedule.length === 0) return null;
  const d = new Date(String(dateStr).replace(/-/g, "/"));
  if (isNaN(d.getTime())) return null;
  const iso = d.getDay() === 0 ? 7 : d.getDay();
  return schedule[iso - 1] || null;
}

/** 后端 holidayDates → Map<yyyy-MM-dd, HolidayInfo> */
export function buildHolidayMap(holidayDates) {
  const map = new Map();
  if (!Array.isArray(holidayDates)) return map;
  holidayDates.forEach((item) => {
    if (!item || item.calendarDate === null || item.calendarDate === undefined) return;
    const dateStr = formatDateKey(item.calendarDate);
    if (!/^\d{4}-\d{2}-\d{2}$/.test(dateStr)) return;
    map.set(dateStr, {
      calendarDate: dateStr,
      changeReason: item.changeReason || "",
      dayType: item.dayType || "",
      sourceType: item.sourceType || "",
    });
  });
  return map;
}

export function getHolidayInfo(dateStr, holidayMap) {
  if (!dateStr || !holidayMap || typeof holidayMap.get !== "function") return null;
  return holidayMap.get(dateStr) || null;
}

/** 综合节假日 / 调休 + 周班次表判断是否休息日 */
export function isRestDay(dateStr, schedule, holidayMap) {
  if (dateStr && holidayMap && typeof holidayMap.get === "function") {
    const holiday = holidayMap.get(dateStr);
    if (holiday) {
      if (holiday.dayType === HOLIDAY_DAY_TYPE.COMPENSATORY_WORKDAY) return false;
      if (
        holiday.dayType === HOLIDAY_DAY_TYPE.LEGAL_HOLIDAY ||
        holiday.dayType === HOLIDAY_DAY_TYPE.COMPENSATORY_RESTDAY
      ) {
        return true;
      }
    }
  }
  const info = getShiftForDate(dateStr, schedule);
  return info ? Boolean(info.isRestDay) : false;
}

function parseShiftSummary(summary) {
  if (!summary || typeof summary !== "string") return [];
  const segments = [];
  summary
    .split(/[；;]/)
    .map((s) => s.trim())
    .filter(Boolean)
    .forEach((part) => {
      let m = part.match(/\((\d{1,2}:\d{2}(?::\d{2})?)\s*[-~]\s*(\d{1,2}:\d{2}(?::\d{2})?)\)/);
      if (!m) m = part.match(/(\d{1,2}:\d{2}(?::\d{2})?)\s*[-~到至]\s*(\d{1,2}:\d{2}(?::\d{2})?)/);
      if (m) segments.push({ start: m[1].slice(0, 5), end: m[2].slice(0, 5), raw: part });
    });
  return segments;
}

/**
 * 归一化打卡规则：补出 shiftSegments / weeklySchedule / shiftStartTime /
 * shiftEndTime / holidayMap，供页面直接使用。
 */
export function normalizeAttendanceRule(rule) {
  if (!rule) return null;
  const segments = parseShiftSummary(rule.shiftTimeSummary);
  const weeklySchedule = parseShiftWeeklySummary(rule.shiftTimeSummary);
  const holidayMap = buildHolidayMap(rule.holidayDates);
  const workDay = weeklySchedule.find((d) => !d.isRestDay && d.segments.length > 0);
  let shiftStartTime = "";
  let shiftEndTime = "";
  if (workDay) {
    const segs = workDay.segments;
    shiftStartTime = segs[0].start;
    shiftEndTime = segs[segs.length - 1].end;
  } else if (segments.length) {
    shiftStartTime = segments[0].start;
    shiftEndTime = segments[segments.length - 1].end;
  }
  return Object.assign({}, rule, {
    shiftSegments: segments,
    weeklySchedule,
    shiftStartTime,
    shiftEndTime,
    holidayMap,
  });
}

// ============ 定位 ============
export function getLocation(options) {
  const timeout = (options && options.timeout) || 10000;

  // #ifdef H5
  if (typeof navigator !== "undefined" && navigator.geolocation) {
    return new Promise((resolve, reject) => {
      navigator.geolocation.getCurrentPosition(
        (pos) =>
          resolve({
            latitude: pos.coords.latitude,
            longitude: pos.coords.longitude,
            accuracy: pos.coords.accuracy,
          }),
        (err) => {
          const msg =
            err && err.code === 1
              ? "定位权限被拒绝，请在浏览器中允许定位后重试"
              : "获取位置失败，请稍后重试";
          reject(new Error(msg));
        },
        { enableHighAccuracy: true, timeout, maximumAge: 0 }
      );
    });
  }
  return Promise.reject(new Error("当前环境不支持定位"));
  // #endif

  // #ifdef MP-WEIXIN || APP-PLUS
  return new Promise((resolve, reject) => {
    uni.getLocation({
      type: "gcj02",
      geocode: false,
      success: (res) =>
        resolve({
          latitude: res.latitude,
          longitude: res.longitude,
          accuracy: res.accuracy,
        }),
      fail: (err) => reject(new Error((err && err.errMsg) || "获取位置失败")),
    });
  });
  // #endif
}