import React from 'react';
import { Card, Empty, Input, Spin, Table } from 'antd';
import { ExportOutlined } from '@ant-design/icons';
import PermissionButton from '../../components/PermissionButton';
import {
  ADMIN_METRIC_META,
  STATUS_META,
  displayAttendanceStatus,
  type AdminStudentPanel,
  type AttendanceRecordItem,
} from './AttendanceAdmin.helpers';

export const AttendanceAdminWorkspace: React.FC<{
  metricFilter: string;
  studentSearch: string;
  onSearchChange: (value: string) => void;
  onExport: () => void;
  visibleStudents: AdminStudentPanel[];
  loading: boolean;
  selectedStudentId?: number;
  onSelectStudent: (student: AdminStudentPanel) => void;
  sortAttendanceRecords: (items: readonly AttendanceRecordItem[]) => AttendanceRecordItem[];
  sessionMap: Record<string, string>;
  records: AttendanceRecordItem[];
  columns: any[];
  page: number;
  pageSize: number;
  total: number;
  onPageChange: (page: number, pageSize: number) => void;
}> = ({
  metricFilter,
  studentSearch,
  onSearchChange,
  onExport,
  visibleStudents,
  loading,
  selectedStudentId,
  onSelectStudent,
  sortAttendanceRecords,
  sessionMap,
  records,
  columns,
  page,
  pageSize,
  total,
  onPageChange,
}) => {
  return (
    <>
      <section className="student-workspace">
        <header className="student-workspace-header">
          <div>
            <h3>班级学生考勤</h3>
            <span>
              {metricFilter === 'all'
                ? `显示全部 ${visibleStudents.length} 名学生`
                : `筛出 ${
                    ADMIN_METRIC_META.find((item) => item.key === metricFilter)?.label || ''
                  }相关 ${visibleStudents.length} 名学生`}
            </span>
          </div>
          <div className="student-workspace-tools">
            <Input.Search
              allowClear
              placeholder="搜索姓名或学号"
              value={studentSearch}
              onChange={(event) => onSearchChange(event.target.value)}
            />
            <PermissionButton
              permission="attendance:export"
              icon={<ExportOutlined />}
              onClick={onExport}
            >
              导出
            </PermissionButton>
          </div>
        </header>
        <div className="student-legend">
          <span>
            <i className="is-present" />
            正常
          </span>
          <span>
            <i className="is-leave" />
            请假
          </span>
          <span>
            <i className="is-absent" />
            缺勤
          </span>
          <em>仅显示当天已生成考勤的课程/时段，不再为无课时段补默认缺勤</em>
        </div>
        <Spin spinning={loading}>
          {visibleStudents.length === 0 ? (
            <Empty
              image={Empty.PRESENTED_IMAGE_SIMPLE}
              description="未找到匹配学生，请调整筛选条件或搜索关键词"
            />
          ) : (
            <div className="student-card-grid">
              {visibleStudents.map((student) => (
                <button
                  type="button"
                  key={student.key}
                  className={`student-attendance-card ${
                    selectedStudentId === student.studentId ? 'selected' : ''
                  }`}
                  onClick={() => onSelectStudent(student)}
                >
                  <span className="student-attendance-head">
                    <strong>{student.studentName}</strong>
                    {student.studentNo && <small>学号 {student.studentNo}</small>}
                  </span>
                  <span className="student-status-blocks">
                    {sortAttendanceRecords(student.records).map((record) => {
                      const currentStatus = displayAttendanceStatus(record.status);
                      const meta = STATUS_META[currentStatus] ?? STATUS_META.absent;
                      const sessionLabel = sessionMap[record.session] || record.session;
                      return (
                        <span
                          key={record.id}
                          className={`student-status-block ${meta.className}`}
                          title={`${sessionLabel}：${meta.label}`}
                        >
                          {meta.label === '出勤' ? '正常' : meta.label}
                        </span>
                      );
                    })}
                  </span>
                </button>
              ))}
            </div>
          )}
        </Spin>
      </section>

      <Card className="student-record-card" variant="borderless" title="原始考勤明细">
        <Table<AttendanceRecordItem>
          rowKey="id"
          columns={columns}
          dataSource={records}
          loading={loading}
          scroll={{ x: 'max-content' }}
          pagination={{
            current: page,
            pageSize,
            total,
            showSizeChanger: true,
            showTotal: (value) => `共 ${value} 条历史记录`,
            onChange: onPageChange,
          }}
          locale={{
            emptyText: (
              <Empty
                image={Empty.PRESENTED_IMAGE_SIMPLE}
                description="当前条件下没有历史考勤记录"
              />
            ),
          }}
        />
      </Card>
    </>
  );
};
