<template>
  <div class="timetable-view">
    <div class="page-header">
      <h2>课表视图</h2>
      <a-space>
        <a-dropdown>
          <a-button>
            <template #icon><PlusOutlined /></template>
            新建排课
            <DownOutlined />
          </a-button>
          <template #overlay>
            <a-menu @click="handleCreateMenuClick">
              <a-menu-item key="single">
                <PlusOutlined /> 单个新建
              </a-menu-item>
              <a-menu-item key="batch">
                <AppstoreAddOutlined /> 批量新建
              </a-menu-item>
              <a-menu-item key="template">
                <CopyOutlined /> 从模板创建
              </a-menu-item>
            </a-menu>
          </template>
        </a-dropdown>
        <a-button @click="showTemplateModal">
          <template #icon><CopyOutlined /></template>
          排课模板
        </a-button>
        <a-dropdown>
          <a-button>
            <template #icon><CalendarOutlined /></template>
            视图切换
            <DownOutlined />
          </a-button>
          <template #overlay>
            <a-menu @click="handleViewMenuClick">
              <a-menu-item key="list">
                <UnorderedListOutlined /> 列表视图
              </a-menu-item>
              <a-menu-item key="timetable">
                <TableOutlined /> 课表视图
              </a-menu-item>
              <a-menu-item key="calendar">
                <CalendarOutlined /> 日历视图
              </a-menu-item>
            </a-menu>
          </template>
        </a-dropdown>
        <a-divider type="vertical" />
        <a-button @click="goToPrevWeek">
          <template #icon><LeftOutlined /></template>
          上一周
        </a-button>
        <a-button @click="goToCurrentWeek">本周</a-button>
        <a-button @click="goToNextWeek">
          <template #icon><RightOutlined /></template>
          下一周
        </a-button>
      </a-space>
    </div>

    <!-- 筛选区 -->
    <div class="filter-section">
      <a-space>
        <span>周次：{{ weekRangeText }}</span>
        <a-divider type="vertical" />
        <a-select
          v-model:value="filters.classId"
          placeholder="选择班级"
          allowClear
          style="width: 150px"
          @change="loadTimetable"
        >
          <a-select-option v-for="cls in classes" :key="cls.id" :value="cls.id">
            {{ cls.name }}
          </a-select-option>
        </a-select>
        <a-select
          v-model:value="filters.teacherId"
          placeholder="选择教师"
          allowClear
          style="width: 150px"
          @change="loadTimetable"
        >
          <a-select-option v-for="teacher in teachers" :key="teacher.id" :value="teacher.id">
            {{ teacher.name }}
          </a-select-option>
        </a-select>
      </a-space>
    </div>

    <!-- 课表 -->
    <div class="timetable-container">
      <div class="timetable-header">
        <div
          v-for="day in weekDays"
          :key="day.date"
          class="day-header"
          :class="{ 'is-today': day.isToday }"
        >
          <div class="day-name">{{ day.dayName }}</div>
          <div class="day-date">{{ day.dateDisplay }}</div>
        </div>
      </div>

      <div class="timetable-body">
        <a-spin :spinning="loading">
          <div class="timetable-grid">
            <div
              v-for="day in weekDays"
              :key="day.date"
              class="day-column"
              :class="{ 'is-today': day.isToday }"
            >
              <div
                v-for="schedule in day.schedules"
                :key="schedule.id"
                class="schedule-card"
                :class="{
                  'school-schedule': schedule.source === 'SCHOOL',
                  'teacher-schedule': schedule.source === 'TEACHER',
                  'cancelled': schedule.status === 'CANCELLED',
                }"
                @click="showScheduleDetail(schedule)"
              >
                <div class="schedule-time">{{ schedule.scheduledTime || '待定' }}</div>
                <div class="schedule-course">{{ schedule.courseName }}</div>
                <div class="schedule-class">{{ schedule.className }}</div>
                <div v-if="schedule.teacherName" class="schedule-teacher">
                  {{ schedule.teacherName }}
                </div>
                <a-tag v-if="schedule.status === 'CANCELLED'" color="error" size="small">已取消</a-tag>
              </div>
              <div v-if="!day.schedules.length" class="empty-day">
                暂无排课
              </div>
            </div>
          </div>
        </a-spin>
      </div>
    </div>

    <!-- 排课详情弹窗 -->
    <a-modal
      v-model:open="detailVisible"
      title="排课详情"
      :footer="null"
      width="500px"
    >
      <template v-if="selectedSchedule">
        <a-descriptions :column="1" bordered>
          <a-descriptions-item label="班级">{{ selectedSchedule.className }}</a-descriptions-item>
          <a-descriptions-item label="课程">{{ selectedSchedule.courseName }}</a-descriptions-item>
          <a-descriptions-item label="授课教师">{{ selectedSchedule.teacherName || '未分配' }}</a-descriptions-item>
          <a-descriptions-item label="排课日期">{{ formatDate(selectedSchedule.scheduledDate) }}</a-descriptions-item>
          <a-descriptions-item label="时间段">{{ selectedSchedule.scheduledTime || '待定' }}</a-descriptions-item>
          <a-descriptions-item label="重复方式">
            <a-tag v-if="selectedSchedule.repeatType === 'NONE'" color="default">单次</a-tag>
            <a-tag v-else-if="selectedSchedule.repeatType === 'DAILY'" color="blue">每日</a-tag>
            <a-tag v-else-if="selectedSchedule.repeatType === 'WEEKLY'" color="green">每周</a-tag>
          </a-descriptions-item>
          <a-descriptions-item label="来源">
            <a-tag v-if="selectedSchedule.source === 'SCHOOL'" color="orange">学校排课</a-tag>
            <a-tag v-else color="purple">教师预约</a-tag>
          </a-descriptions-item>
          <a-descriptions-item label="状态">
            <a-tag v-if="selectedSchedule.status === 'ACTIVE'" color="success">有效</a-tag>
            <a-tag v-else color="error">已取消</a-tag>
          </a-descriptions-item>
          <a-descriptions-item v-if="selectedSchedule.note" label="备注">{{ selectedSchedule.note }}</a-descriptions-item>
        </a-descriptions>
      </template>
    </a-modal>

    <!-- 排课模板管理弹窗 -->
    <a-modal
      v-model:open="templateModalVisible"
      title="排课模板管理"
      :footer="null"
      width="800px"
    >
      <div style="margin-bottom: 16px; text-align: right;">
        <a-button type="primary" size="small" @click="router.push('/school/schedule')">
          <PlusOutlined /> 新建模板
        </a-button>
      </div>
      <a-table
        :columns="[
          { title: '模板名称', dataIndex: 'name' },
          { title: '课程', dataIndex: 'courseName' },
          { title: '时间', dataIndex: 'scheduledTime' },
          { title: '操作', key: 'actions', width: 100 },
        ]"
        :data-source="templates"
        :loading="templateLoading"
        size="small"
        rowKey="id"
        :pagination="{ pageSize: 5 }"
      >
        <template #bodyCell="{ column, record }">
          <template v-if="column.key === 'actions'">
            <a-button type="link" size="small" @click="applyTemplate(record as any)">应用</a-button>
          </template>
        </template>
      </a-table>
    </a-modal>

    <!-- 批量排课弹窗 -->
    <a-modal
      v-model:open="batchModalVisible"
      title="批量新建排课"
      :confirm-loading="batchLoading"
      @ok="handleBatchSubmit"
      width="900px"
    >
      <a-alert message="批量添加排课信息" type="info" show-icon style="margin-bottom: 16px" />
      <div style="margin-bottom: 16px;">
        <a-button type="dashed" @click="addBatchItem">
          <PlusOutlined /> 添加排课
        </a-button>
      </div>
      <a-table
        :columns="[
          { title: '班级', key: 'classId', width: 120 },
          { title: '课程', key: 'courseId', width: 150 },
          { title: '教师', key: 'teacherId', width: 100 },
          { title: '日期', key: 'scheduledDate', width: 140 },
          { title: '时间', key: 'scheduledTime', width: 120 },
          { title: '', key: 'actions', width: 50 },
        ]"
        :data-source="batchItems"
        size="small"
        rowKey="key"
        :pagination="false"
      >
        <template #bodyCell="{ column, record, index }">
          <template v-if="column.key === 'classId'">
            <a-select v-model:value="record.classId" placeholder="班级" style="width: 100%">
              <a-select-option v-for="cls in classes" :key="cls.id" :value="cls.id">
                {{ cls.name }}
              </a-select-option>
            </a-select>
          </template>
          <template v-if="column.key === 'courseId'">
            <a-select v-model:value="record.courseId" placeholder="课程" style="width: 100%">
              <a-select-option v-for="course in courses" :key="course.id" :value="course.id">
                {{ course.name }}
              </a-select-option>
            </a-select>
          </template>
          <template v-if="column.key === 'teacherId'">
            <a-select v-model:value="record.teacherId" placeholder="教师" style="width: 100%" allowClear>
              <a-select-option v-for="teacher in teachers" :key="teacher.id" :value="teacher.id">
                {{ teacher.name }}
              </a-select-option>
            </a-select>
          </template>
          <template v-if="column.key === 'scheduledDate'">
            <a-date-picker v-model:value="record.scheduledDate" style="width: 100%" />
          </template>
          <template v-if="column.key === 'scheduledTime'">
            <a-input v-model:value="record.scheduledTime" placeholder="09:00-09:30" style="width: 100%" />
          </template>
          <template v-if="column.key === 'actions'">
            <a-button type="link" size="small" danger @click="removeBatchItem(index)">
              <DeleteOutlined />
            </a-button>
          </template>
        </template>
      </a-table>
    </a-modal>

    <!-- 从模板创建弹窗 -->
    <a-modal
      v-model:open="templateSelectModalVisible"
      title="从模板创建排课"
      :confirm-loading="templateSelectLoading"
      @ok="handleTemplateSelectSubmit"
    >
      <a-form :label-col="{ span: 6 }" :wrapper-col="{ span: 16 }">
        <a-form-item label="选择模板">
          <a-select v-model:value="selectedTemplateId" placeholder="选择排课模板" style="width: 100%">
            <a-select-option v-for="tpl in templates" :key="tpl.id" :value="tpl.id">
              {{ tpl.name }} - {{ tpl.courseName }} ({{ tpl.scheduledTime }})
            </a-select-option>
          </a-select>
        </a-form-item>
        <a-form-item label="排课日期">
          <a-date-picker v-model:value="templateApplyDate" style="width: 100%" />
        </a-form-item>
      </a-form>
    </a-modal>
  </div>
</template>

<script setup lang="ts">
import { ref, reactive, computed, onMounted } from 'vue';
import { useRouter } from 'vue-router';
import { message } from 'ant-design-vue';
import dayjs from 'dayjs';
import {
  LeftOutlined,
  RightOutlined,
  PlusOutlined,
  DownOutlined,
  AppstoreAddOutlined,
  CopyOutlined,
  CalendarOutlined,
  UnorderedListOutlined,
  TableOutlined,
  DeleteOutlined,
} from '@ant-design/icons-vue';
import {
  getTimetable,
  getClasses,
  getTeachers,
  getSchoolCourses,
  getScheduleTemplates,
  createScheduleTemplate,
  updateScheduleTemplate,
  deleteScheduleTemplate,
  applyScheduleTemplate,
  batchCreateSchedules,
  createSchedule,
  type TimetableItem,
  type SchedulePlan,
  type ClassInfo,
  type Teacher,
  type ScheduleTemplate,
} from '@/api/school';

const router = useRouter();

// 数据
const loading = ref(false);
const timetable = ref<TimetableItem[]>([]);
const classes = ref<ClassInfo[]>([]);
const teachers = ref<Teacher[]>([]);
const courses = ref<any[]>([]);

// 当前周
const currentWeekStart = ref(dayjs().startOf('week').add(1, 'day')); // 周一

// 筛选
const filters = reactive({
  classId: undefined as number | undefined,
  teacherId: undefined as number | undefined,
});

// 详情弹窗
const detailVisible = ref(false);
const selectedSchedule = ref<SchedulePlan | null>(null);

// 计算属性
const weekRangeText = computed(() => {
  const start = currentWeekStart.value;
  const end = start.add(6, 'day');
  return `${start.format('MM-DD')} 至 ${end.format('MM-DD')}`;
});

const weekDays = computed(() => {
  const days = ['周一', '周二', '周三', '周四', '周五', '周六', '周日'];
  const today = dayjs().format('YYYY-MM-DD');

  return Array.from({ length: 7 }, (_, i) => {
    const date = currentWeekStart.value.add(i, 'day');
    const dateStr = date.format('YYYY-MM-DD');
    const dayData = timetable.value.find(t => t.date === dateStr);

    return {
      date: dateStr,
      dayName: days[i],
      dateDisplay: date.format('MM-DD'),
      isToday: dateStr === today,
      schedules: dayData?.schedules || [],
    };
  });
});

// 加载数据
const loadTimetable = async () => {
  loading.value = true;
  try {
    const start = currentWeekStart.value;
    const res = await getTimetable({
      startDate: start.format('YYYY-MM-DD'),
      endDate: start.add(6, 'day').format('YYYY-MM-DD'),
      ...filters,
    });
    timetable.value = res;
  } catch (error) {
    message.error('加载课表失败');
  } finally {
    loading.value = false;
  }
};

const loadBaseData = async () => {
  try {
    const [classesRes, teachersRes, coursesRes] = await Promise.all([
      getClasses(),
      getTeachers({ page: 1, pageSize: 100 }),
      getSchoolCourses(),
    ]);
    classes.value = classesRes;
    teachers.value = teachersRes.items;
    courses.value = coursesRes;
  } catch (error) {
    message.error('加载基础数据失败');
  }
};

// 周次导航
const goToPrevWeek = () => {
  currentWeekStart.value = currentWeekStart.value.subtract(7, 'day');
  loadTimetable();
};

const goToNextWeek = () => {
  currentWeekStart.value = currentWeekStart.value.add(7, 'day');
  loadTimetable();
};

const goToCurrentWeek = () => {
  currentWeekStart.value = dayjs().startOf('week').add(1, 'day');
  loadTimetable();
};

// 视图切换
const handleViewMenuClick = (e: any) => {
  const key = e.key;
  if (key === 'list') {
    router.push('/school/schedule');
  } else if (key === 'calendar') {
    router.push('/school/schedule/calendar');
  }
};

// 排课模板
const templateModalVisible = ref(false);
const templateLoading = ref(false);
const templates = ref<ScheduleTemplate[]>([]);
const templateFormModalVisible = ref(false);
const templateFormLoading = ref(false);
const editingTemplate = ref<ScheduleTemplate | null>(null);
const templateForm = reactive({
  name: '',
  courseId: undefined as number | undefined,
  classId: undefined as number | undefined,
  teacherId: undefined as number | undefined,
  scheduledTime: '09:00-09:30',
  weekDay: undefined as number | undefined,
  duration: 30,
  isDefault: false,
});

const showTemplateModal = async () => {
  templateModalVisible.value = true;
  await loadTemplates();
};

const loadTemplates = async () => {
  templateLoading.value = true;
  try {
    templates.value = await getScheduleTemplates();
  } catch (error) {
    message.error('加载模板失败');
  } finally {
    templateLoading.value = false;
  }
};

// 批量排课
const batchModalVisible = ref(false);
const batchLoading = ref(false);
const batchItems = ref<any[]>([]);
let batchKey = 0;

const showBatchModal = () => {
  batchItems.value = [];
  batchKey = 0;
  addBatchItem();
  batchModalVisible.value = true;
};

const addBatchItem = () => {
  batchItems.value.push({
    key: ++batchKey,
    classId: undefined,
    courseId: undefined,
    teacherId: undefined,
    scheduledDate: dayjs(),
    scheduledTime: '09:00-09:30',
  });
};

const removeBatchItem = (index: number) => {
  batchItems.value.splice(index, 1);
};

const handleBatchSubmit = async () => {
  const validItems = batchItems.value.filter(item =>
    item.classId && item.courseId && item.scheduledDate && item.scheduledTime
  );
  if (validItems.length === 0) {
    message.warning('请至少填写一条完整的排课信息');
    return;
  }
  batchLoading.value = true;
  try {
    const schedules = validItems.map(item => ({
      classId: item.classId,
      courseId: item.courseId,
      teacherId: item.teacherId,
      scheduledDate: item.scheduledDate.format('YYYY-MM-DD'),
      scheduledTime: item.scheduledTime,
    }));
    const result = await batchCreateSchedules(schedules);
    message.success(`成功创建 ${result.success} 条排课`);
    batchModalVisible.value = false;
    loadTimetable();
  } catch (error) {
    message.error('批量创建失败');
  } finally {
    batchLoading.value = false;
  }
};

// 从模板创建
const templateSelectModalVisible = ref(false);
const templateSelectLoading = ref(false);
const selectedTemplateId = ref<number | undefined>();
const templateApplyDate = ref(dayjs());

const applyTemplate = (record: ScheduleTemplate) => {
  selectedTemplateId.value = record.id;
  templateApplyDate.value = dayjs();
  templateSelectModalVisible.value = true;
};

const handleTemplateSelectSubmit = async () => {
  if (!selectedTemplateId.value || !templateApplyDate.value) {
    message.warning('请选择模板和日期');
    return;
  }
  templateSelectLoading.value = true;
  try {
    await applyScheduleTemplate(selectedTemplateId.value, {
      scheduledDate: templateApplyDate.value.format('YYYY-MM-DD'),
    });
    message.success('应用模板成功');
    templateSelectModalVisible.value = false;
    templateModalVisible.value = false;
    loadTimetable();
  } catch (error) {
    message.error('应用模板失败');
  } finally {
    templateSelectLoading.value = false;
  }
};

// 新建排课菜单
const handleCreateMenuClick = (e: any) => {
  const key = e.key;
  if (key === 'single') {
    router.push('/school/schedule');
  } else if (key === 'batch') {
    showBatchModal();
  } else if (key === 'template') {
    selectedTemplateId.value = undefined;
    templateApplyDate.value = dayjs();
    templateSelectModalVisible.value = true;
    loadTemplates();
  }
};

// 详情
const showScheduleDetail = (schedule: SchedulePlan) => {
  selectedSchedule.value = schedule;
  detailVisible.value = true;
};

const formatDate = (date: string | undefined) => {
  if (!date) return '-';
  return dayjs(date).format('YYYY-MM-DD');
};

onMounted(() => {
  loadBaseData();
  loadTimetable();
});
</script>

<style scoped lang="scss">
.timetable-view {
  .page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;

    h2 {
      margin: 0;
    }
  }

  .filter-section {
    margin-bottom: 20px;
    padding: 16px;
    background: #fafafa;
    border-radius: 8px;
  }

  .timetable-container {
    border: 1px solid #e8e8e8;
    border-radius: 8px;
    overflow: hidden;
  }

  .timetable-header {
    display: table;
    width: 100%;
    table-layout: fixed; // 固定表格布局，确保列宽一致
    background: linear-gradient(135deg, #FF8C42 0%, #E67635 100%);
    color: white;

    .day-header {
      display: table-cell;
      padding: 12px 8px;
      text-align: center;
      border-right: 1px solid rgba(255, 255, 255, 0.2);
      vertical-align: middle;

      &:last-child {
        border-right: none;
      }

      &.is-today {
        background: rgba(255, 255, 255, 0.2);
      }

      .day-name {
        font-weight: 500;
      }

      .day-date {
        font-size: 12px;
        opacity: 0.8;
      }
    }
  }

  .timetable-body {
    min-height: 400px;
  }

  .timetable-grid {
    display: table;
    width: 100%;
    table-layout: fixed; // 固定表格布局，确保列宽与表头一致

    .day-column {
      display: table-cell;
      min-height: 300px;
      padding: 8px;
      border-right: 1px solid #e8e8e8;
      background: #fafafa;
      vertical-align: top;

      &:last-child {
        border-right: none;
      }

      &.is-today {
        background: #fff4ec;
      }
    }
  }

  .schedule-card {
    background: white;
    border-radius: 8px;
    padding: 10px;
    margin-bottom: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: all 0.3s;
    border-left: 3px solid #FF8C42;

    &:hover {
      box-shadow: 0 3px 8px rgba(0, 0, 0, 0.15);
      transform: translateY(-2px);
    }

    &.teacher-schedule {
      border-left-color: #722ed1;
    }

    &.cancelled {
      opacity: 0.5;
      border-left-color: #999;
    }

    .schedule-time {
      font-size: 12px;
      color: #666;
      margin-bottom: 4px;
    }

    .schedule-course {
      font-weight: 500;
      color: #333;
      margin-bottom: 4px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .schedule-class {
      font-size: 12px;
      color: #666;
    }

    .schedule-teacher {
      font-size: 12px;
      color: #999;
      margin-top: 4px;
    }
  }

  .empty-day {
    text-align: center;
    color: #999;
    padding: 20px;
    font-size: 12px;
  }
}
</style>
