import { apiRequestData } from "./http";

export type AttendanceExemptionReason =
  | "leave"
  | "travel"
  | "holiday"
  | "weekend"
  | "policy_disabled";

export type AttendanceStatus =
  | "normal"
  | "late"
  | "early_leave"
  | "late_early_leave"
  | "pending_clock_out"
  | "missed"
  | "leave"
  | "travel"
  | "holiday"
  | "weekend";

export type AttendanceRecordItem = {
  id: string | null;
  employeeId: string;
  workDate: string;
  clockInAt: string | null;
  clockOutAt: string | null;
  workMinutes: number | null;
  isLate: boolean;
  lateMinutes: number;
  isEarlyLeave: boolean;
  earlyMinutes: number;
  note: string | null;
  source: "web" | "mobile" | "admin" | null;
  updatedAt: string | null;
};

export type AttendanceTodayResponse = {
  workDate: string;
  needClockIn: boolean;
  exemptionReason: AttendanceExemptionReason | null;
  item: AttendanceRecordItem | null;
};

export type AttendanceMonthItem = AttendanceRecordItem & {
  attendanceStatus: AttendanceStatus;
  needClockIn: boolean;
  exemptionReason: AttendanceExemptionReason | null;
};

export type AttendanceMonthSummary = {
  totalWorkDays: number;
  clockedDays: number;
  lateDays: number;
  earlyLeaveDays: number;
  missedDays: number;
  totalWorkMinutes: number;
};

export type AttendanceMonthResponse = {
  year: number;
  month: number;
  summary: AttendanceMonthSummary;
  items: AttendanceMonthItem[];
};

export type AttendanceTeamItem = {
  employeeId: string;
  employeeName: string;
  employeeNo: string;
  title: string;
  departmentId: string | null;
  departmentName: string | null;
  attendanceStatus: AttendanceStatus;
  needClockIn: boolean;
  exemptionReason: AttendanceExemptionReason | null;
  clockInAt: string | null;
  clockOutAt: string | null;
  workMinutes: number | null;
  note: string | null;
  source: "web" | "mobile" | "admin" | null;
};

export type AttendancePolicy = {
  id: string | null;
  workStartTime: string;
  workEndTime: string;
  lunchStartTime: string;
  lunchEndTime: string;
  lateToleranceMinutes: number;
  enabled: boolean;
  createdAt: string | null;
  updatedAt: string | null;
  updatedBy: string | null;
};

export async function clockInAttendance(note?: string | null) {
  return apiRequestData<{ item: AttendanceRecordItem }>("/api/attendance/clock-in", {
    method: "POST",
    body: JSON.stringify(note ? { note } : {}),
  });
}

export async function clockOutAttendance(note?: string | null) {
  return apiRequestData<{ item: AttendanceRecordItem }>("/api/attendance/clock-out", {
    method: "POST",
    body: JSON.stringify(note ? { note } : {}),
  });
}

export async function fetchMyTodayAttendance() {
  return apiRequestData<AttendanceTodayResponse>("/api/attendance/me/today");
}

export async function fetchMyMonthAttendance(params?: { year?: number; month?: number }) {
  const search = new URLSearchParams();
  if (params?.year) {
    search.set("year", String(params.year));
  }
  if (params?.month) {
    search.set("month", String(params.month));
  }
  const query = search.toString();
  return apiRequestData<AttendanceMonthResponse>(`/api/attendance/me/month${query ? `?${query}` : ""}`);
}

export async function fetchTeamAttendance(params?: { date?: string; departmentId?: string }) {
  const search = new URLSearchParams();
  if (params?.date) {
    search.set("date", params.date);
  }
  if (params?.departmentId) {
    search.set("departmentId", params.departmentId);
  }
  const query = search.toString();
  return apiRequestData<{ date: string; items: AttendanceTeamItem[] }>(`/api/attendance/team${query ? `?${query}` : ""}`);
}

export async function fetchAttendancePolicy() {
  return apiRequestData<{ item: AttendancePolicy }>("/api/attendance/policy");
}

export async function updateAttendancePolicy(payload: {
  workStartTime: string;
  workEndTime: string;
  lunchStartTime: string;
  lunchEndTime: string;
  lateToleranceMinutes: number;
  enabled?: boolean;
}) {
  return apiRequestData<{ item: AttendancePolicy }>("/api/attendance/policy", {
    method: "PUT",
    body: JSON.stringify(payload),
  });
}

export async function adminBackfillAttendance(payload: {
  employeeId: string;
  workDate: string;
  clockInAt?: string | null;
  clockOutAt?: string | null;
  note?: string | null;
}) {
  return apiRequestData<{ item: AttendanceRecordItem }>("/api/attendance/admin/backfill", {
    method: "POST",
    body: JSON.stringify(payload),
  });
}