// frontend/src/components/settings/ScheduleSection.jsx
import { CalendarClock, Clock, PlayCircle } from 'lucide-react';
import {
  SCHEDULE_TYPE, DEFAULT_CRON, DEFAULT_TIME,
  getScheduleSummary, buildDailyCron, buildWeeklyCron
} from '../../utils/schedule';

export default function ScheduleSection({ schedule = {}, onUpdate }) {
  const enabled = schedule.enabled !== false;
  const type = schedule.type || SCHEDULE_TYPE.DAILY;
  const time = schedule.time || DEFAULT_TIME;
  const dayOfWeek = schedule.dayOfWeek || '1';
  const cron = schedule.cron || DEFAULT_CRON;

  const setEnabled = (val) => onUpdate('schedule', { ...schedule, enabled: val });
  const setType = (val) => {
    if (val === SCHEDULE_TYPE.DAILY) {
      onUpdate('schedule', { ...schedule, type: val, cron: buildDailyCron(time) });
    } else if (val === SCHEDULE_TYPE.WEEKLY) {
      onUpdate('schedule', { ...schedule, type: val, dayOfWeek, cron: buildWeeklyCron(dayOfWeek, time) });
    } else {
      onUpdate('schedule', { ...schedule, type: val, cron: schedule.cron || DEFAULT_CRON });
    }
  };
  const setTime = (val) => {
    const newCron = type === SCHEDULE_TYPE.WEEKLY
      ? buildWeeklyCron(dayOfWeek, val) : buildDailyCron(val);
    onUpdate('schedule', { ...schedule, type, time: val, cron: newCron });
  };
  const setDay = (val) => {
    onUpdate('schedule', { ...schedule, type, dayOfWeek: val, cron: buildWeeklyCron(val, time) });
  };
  const setCron = (val) => {
    onUpdate('schedule', { ...schedule, type: SCHEDULE_TYPE.CRON, cron: val });
  };

  return (
    <div className="bg-slate-900 border border-slate-800 rounded-xl p-6 shadow-lg">
      <div className="flex justify-between items-center mb-5 border-b border-slate-800 pb-3">
        <h3 className="text-base font-semibold text-white flex items-center">
          <CalendarClock className="w-5 h-5 mr-2 text-amber-400" />
          自动化定时任务
        </h3>
        <label className="flex items-center cursor-pointer">
          <div className="relative">
            <input type="checkbox" className="sr-only" checked={enabled} onChange={(e) => setEnabled(e.target.checked)} />
            <div className={`block w-10 h-6 rounded-full transition-colors ${enabled ? 'bg-amber-500' : 'bg-slate-700'}`}></div>
            <div className={`dot absolute left-1 top-1 bg-white w-4 h-4 rounded-full transition-transform ${enabled ? 'transform translate-x-4' : ''}`}></div>
          </div>
          <span className="ml-3 text-sm font-medium text-slate-300">{enabled ? '已启用自动入库' : '已暂停自动入库'}</span>
        </label>
      </div>

      <div className={`flex flex-col gap-4 transition-opacity ${enabled ? 'opacity-100' : 'opacity-40 pointer-events-none'}`}>
        <div className="flex flex-wrap gap-4 items-end">
          <div className="w-44 shrink-0">
            <label className="flex items-center text-xs font-medium text-slate-400 mb-1.5">执行频率</label>
            <select className="w-full px-3 py-2 rounded bg-slate-950 border border-slate-700 text-slate-200 text-sm focus:ring-amber-500 focus:border-amber-500 focus:outline-none"
              value={type} onChange={(e) => setType(e.target.value)}>
              <option value={SCHEDULE_TYPE.DAILY}>每天执行</option>
              <option value={SCHEDULE_TYPE.WEEKLY}>每周执行</option>
              <option value={SCHEDULE_TYPE.CRON}>专家模式 (Cron)</option>
            </select>
          </div>

          {type === SCHEDULE_TYPE.WEEKLY && (
            <div className="w-32 shrink-0">
              <label className="flex items-center text-xs font-medium text-slate-400 mb-1.5">星期</label>
              <select className="w-full px-3 py-2 rounded bg-slate-950 border border-slate-700 text-slate-200 text-sm focus:ring-amber-500 focus:border-amber-500 focus:outline-none"
                value={dayOfWeek} onChange={(e) => setDay(e.target.value)}>
                <option value="1">星期一</option><option value="2">星期二</option>
                <option value="3">星期三</option><option value="4">星期四</option>
                <option value="5">星期五</option><option value="6">星期六</option>
                <option value="0">星期日</option>
              </select>
            </div>
          )}

          {type !== SCHEDULE_TYPE.CRON && (
            <div className="w-32 shrink-0">
              <label className="flex items-center text-xs font-medium text-slate-400 mb-1.5">具体时间</label>
              <input type="time" className="w-full px-3 py-2 rounded bg-slate-950 border border-slate-700 text-slate-200 text-sm font-mono focus:ring-amber-500 focus:border-amber-500 focus:outline-none"
                style={{ colorScheme: 'dark' }} value={time} onChange={(e) => setTime(e.target.value)} />
            </div>
          )}

          {type === SCHEDULE_TYPE.CRON && (
            <div className="flex-1 min-w-[200px]">
              <label className="flex items-center text-xs font-medium text-slate-400 mb-1.5">Cron 表达式</label>
              <input type="text" className="w-full px-3 py-2 rounded bg-slate-950 border border-slate-700 text-amber-400 text-sm font-mono focus:ring-amber-500 focus:border-amber-500 focus:outline-none"
                value={cron} onChange={(e) => setCron(e.target.value)} placeholder="例如: 0 2 * * *" />
            </div>
          )}
        </div>

        <div className="flex items-center justify-between gap-4 rounded-xl border border-slate-800/90 bg-[#0b1328] px-4 py-3.5">
          <div className="flex min-w-0 items-center text-sm">
            <Clock className="mr-2 h-4 w-4 shrink-0 text-amber-400" />
            <span className="mr-2 shrink-0 text-slate-200">解析结果:</span>
            <span className="truncate font-medium text-amber-400">{getScheduleSummary(schedule)}</span>
          </div>
          <button className="flex shrink-0 items-center justify-center rounded-lg border border-slate-600 bg-slate-700/70 px-4 py-2 text-sm font-medium text-slate-100 shadow-inner shadow-slate-950/30 transition hover:bg-slate-600/80">
            <PlayCircle className="mr-1.5 h-4 w-4" /> 立即运行测试
          </button>
        </div>
      </div>
    </div>
  );
}