'use client';
import { create } from 'zustand';
import type { OvertimeRecord } from '@/lib/overtime';
import type { DictItem } from '@/lib/requirement';
import { calcDuration } from '@/lib/overtime';

const STORAGE_KEY = 'ftb_overtime_v1';

const PRESET_REASONS: DictItem[] = [
  { id: 'reason-1', name: '需求变更', createdAt: '2024-01-01' },
  { id: 'reason-2', name: '需求新增', createdAt: '2024-01-01' },
  { id: 'reason-3', name: '版本冲刺', createdAt: '2024-01-01' },
  { id: 'reason-4', name: 'Bug修复', createdAt: '2024-01-01' },
  { id: 'reason-5', name: '线上问题修复', createdAt: '2024-01-01' },
  { id: 'reason-6', name: '测试问题整改', createdAt: '2024-01-01' },
  { id: 'reason-7', name: '技术难点攻关', createdAt: '2024-01-01' },
  { id: 'reason-8', name: '联调问题', createdAt: '2024-01-01' },
  { id: 'reason-9', name: '上游交付延误', createdAt: '2024-01-01' },
  { id: 'reason-10', name: '工作量超负荷', createdAt: '2024-01-01' },
  { id: 'reason-11', name: '返工修改', createdAt: '2024-01-01' },
];

const MOCK_RECORDS: OvertimeRecord[] = [
  { id: 'ot-1', projectId: 'p1', versionId: 'v2', person: '张三', startTime: '2024-12-10T19:00', endTime: '2024-12-10T22:30', duration: 3.5, reasonId: 'reason-3', createdAt: '2024-12-10' },
  { id: 'ot-2', projectId: 'p2', versionId: 'v5', person: '李四', startTime: '2024-12-11T18:30', endTime: '2024-12-11T21:00', duration: 2.5, reasonId: 'reason-1', createdAt: '2024-12-11' },
  { id: 'ot-3', projectId: 'p1', versionId: 'v2', person: '王五', startTime: '2024-12-12T19:00', endTime: '2024-12-12T23:00', duration: 4, reasonId: 'reason-4', createdAt: '2024-12-12' },
  { id: 'ot-4', projectId: 'p3', person: '张三', startTime: '2024-12-13T18:00', endTime: '2024-12-13T20:30', duration: 2.5, reasonId: 'reason-7', createdAt: '2024-12-13' },
  { id: 'ot-5', projectId: 'p2', versionId: 'v5', person: '赵六', startTime: '2024-12-14T19:30', endTime: '2024-12-15T01:00', duration: 5.5, reasonId: 'reason-5', remark: '线上紧急事故', createdAt: '2024-12-14' },
];

interface OvertimeState {
  records: OvertimeRecord[];
  reasons: DictItem[];
  loading: boolean;
  fetchRecords: () => void;
  createRecord: (data: Omit<OvertimeRecord, 'id' | 'duration' | 'createdAt'>) => void;
  updateRecord: (id: string, data: Partial<OvertimeRecord>) => void;
  deleteRecord: (id: string) => void;
  addReason: (name: string) => void;
  updateReason: (id: string, name: string) => void;
  deleteReason: (id: string) => void;
}

function saveLocal(data: { records: OvertimeRecord[]; reasons: DictItem[] }) {
  try { localStorage.setItem(STORAGE_KEY, JSON.stringify(data)); } catch {}
}

function loadLocal(): { records: OvertimeRecord[]; reasons: DictItem[] } | null {
  try {
    const raw = localStorage.getItem(STORAGE_KEY);
    if (raw) return JSON.parse(raw);
  } catch {}
  return null;
}

export const useOvertimeStore = create<OvertimeState>((set, get) => ({
  records: MOCK_RECORDS,
  reasons: PRESET_REASONS,
  loading: false,

  fetchRecords: () => {
    const cached = loadLocal();
    if (cached) set({ records: cached.records, reasons: cached.reasons });
  },

  createRecord: (data) => {
    const duration = calcDuration(data.startTime, data.endTime);
    const record: OvertimeRecord = {
      ...data,
      id: `ot-${Date.now()}`,
      duration,
      createdAt: new Date().toISOString().slice(0, 10),
    };
    const records = [...get().records, record];
    set({ records });
    saveLocal({ records, reasons: get().reasons });
  },

  updateRecord: (id, data) => {
    const records = get().records.map((r) => {
      if (r.id !== id) return r;
      const updated = { ...r, ...data };
      if (data.startTime || data.endTime) {
        updated.duration = calcDuration(updated.startTime, updated.endTime);
      }
      return updated;
    });
    set({ records });
    saveLocal({ records, reasons: get().reasons });
  },

  deleteRecord: (id) => {
    const records = get().records.filter((r) => r.id !== id);
    set({ records });
    saveLocal({ records, reasons: get().reasons });
  },

  addReason: (name) => {
    const item: DictItem = { id: `reason-${Date.now()}`, name, createdAt: new Date().toISOString().slice(0, 10) };
    const reasons = [...get().reasons, item];
    set({ reasons });
    saveLocal({ records: get().records, reasons });
  },

  updateReason: (id, name) => {
    const reasons = get().reasons.map((r) => r.id === id ? { ...r, name } : r);
    set({ reasons });
    saveLocal({ records: get().records, reasons });
  },

  deleteReason: (id) => {
    const reasons = get().reasons.filter((r) => r.id !== id);
    set({ reasons });
    saveLocal({ records: get().records, reasons });
  },
}));