import React from 'react';
import {
  Card,
  DatePicker,
  Empty,
  Form,
  Input,
  InputNumber,
  Modal,
  Popconfirm,
  Select,
  Space,
  Table,
  Tag,
} from 'antd';
import { DollarOutlined, InboxOutlined, PlusOutlined } from '@ant-design/icons';
import PermissionButton from '../../components/PermissionButton';
import EditableCell from '../../components/EditableCell';
import type { DepositStudentLookup } from './deposit-student-option';

export interface DepositRecord {
  id: number;
  studentId: number;
  amount: number;
  status: string;
  paidDate: string;
  refundDate?: string | null;
  notes?: string | null;
  installments?: Array<{
    id: number;
    amount: number;
    dueDate: string;
    paidDate?: string | null;
    status: string;
  }>;
  student?: DepositStudentLookup;
}

export interface EligibleStudent {
  studentId: number;
  studentName: string;
  studentNo?: string | null;
  roomId: number;
  roomNumber: string;
  building?: string | null;
  roomType?: string | null;
  capacity: number;
  depositAmount: number;
}

export const statusMap: Record<string, { text: string; color: string }> = {
  paid: { text: '有余额', color: 'green' },
  refunded: { text: '已全退', color: 'blue' },
  depleted: { text: '已扣完', color: 'red' },
};

export const installmentStatusMap: Record<string, { text: string; color: string }> = {
  pending: { text: '待缴', color: 'orange' },
  paid: { text: '已缴', color: 'green' },
};

export const roomTypeOptions = [
  { value: '单人间', label: '单人间' },
  { value: '四人间', label: '四人间' },
];

export const suggestedDepositByRoomType: Record<string, number> = {
  单人间: 200,
  四人间: 100,
};

export interface DepositModalsProps {
  batchModal: boolean;
  createModal: boolean;
  refundModal: DepositRecord | null;
  detailModal: DepositRecord | null;
  installmentModal: number | null;
  batchForm: ReturnType<typeof Form.useForm>[0];
  createForm: ReturnType<typeof Form.useForm>[0];
  refundForm: ReturnType<typeof Form.useForm>[0];
  installmentForm: ReturnType<typeof Form.useForm>[0];
  saving: boolean;
  batchRoomType: string;
  effectiveSelectedEligibleIds: number[];
  eligibleStudents: EligibleStudent[];
  eligibleLoading: boolean;
  eligibleColumns: Array<{ title: string; render?: unknown; dataIndex?: string }>;
  studentOptions: Array<{ value: number; label: string }>;
  onBatchRoomTypeChange: (roomType: string) => void;
  onBatchCreate: () => void;
  onCreate: () => void;
  onRefund: () => void;
  onAddInstallment: () => void;
  onPayInstallment: (installmentId: number) => void;
  onSaveInstallmentCell: (
    installmentId: number,
    field: 'status' | 'paidDate',
    value: unknown,
  ) => void;
  onDeleteInstallment: (installmentId: number) => void;
  onCloseBatch: () => void;
  onCloseCreate: () => void;
  onCloseRefund: () => void;
  onCloseDetail: () => void;
  onCloseInstallment: () => void;
  onOpenInstallment: (id: number) => void;
  onSelectEligible: (ids: number[]) => void;
}

export const DepositModals: React.FC<DepositModalsProps> = ({
  batchModal,
  createModal,
  refundModal,
  detailModal,
  installmentModal,
  batchForm,
  createForm,
  refundForm,
  installmentForm,
  saving,
  batchRoomType,
  effectiveSelectedEligibleIds,
  eligibleStudents,
  eligibleLoading,
  eligibleColumns,
  studentOptions,
  onBatchRoomTypeChange,
  onBatchCreate,
  onCreate,
  onRefund,
  onAddInstallment,
  onPayInstallment,
  onSaveInstallmentCell,
  onDeleteInstallment,
  onCloseBatch,
  onCloseCreate,
  onCloseRefund,
  onCloseDetail,
  onCloseInstallment,
  onOpenInstallment,
  onSelectEligible,
}) => {
  return (
    <>
      <Modal
        title="按房型批量收取押金"
        open={batchModal}
        onOk={onBatchCreate}
        onCancel={onCloseBatch}
        okText="确认批量收取"
        confirmLoading={saving}
        okButtonProps={{ disabled: effectiveSelectedEligibleIds.length === 0 }}
        width={760}
      >
        <Form form={batchForm} layout="vertical">
          <Space style={{ width: '100%' }} align="start" wrap>
            <Form.Item
              name="roomType"
              label="房型"
              rules={[{ required: true, message: '请选择房型' }]}
            >
              <Select
                style={{ width: 140 }}
                options={roomTypeOptions}
                onChange={onBatchRoomTypeChange}
              />
            </Form.Item>
            <Form.Item
              name="amount"
              label="每人收取金额（元）"
              rules={[{ required: true, message: '请输入金额' }]}
            >
              <InputNumber min={0.01} precision={2} style={{ width: 180 }} />
            </Form.Item>
            <Form.Item
              name="paidDate"
              label="收取日期"
              rules={[{ required: true, message: '请选择日期' }]}
            >
              <DatePicker style={{ width: 180 }} placeholder="选择收取日期" format="YYYY-MM-DD" />
            </Form.Item>
          </Space>
          <Form.Item name="notes" label="备注">
            <Input.TextArea rows={2} placeholder={`${batchRoomType}押金`} />
          </Form.Item>
        </Form>
        <div style={{ marginBottom: 8 }}>
          已选择 <strong>{effectiveSelectedEligibleIds.length}</strong> / {eligibleStudents.length}{' '}
          人
          {suggestedDepositByRoomType[batchRoomType] && (
            <span style={{ color: '#999', marginLeft: 8 }}>
              建议金额：¥{suggestedDepositByRoomType[batchRoomType]}
            </span>
          )}
        </div>
        <Table
          size="small"
          columns={eligibleColumns as never}
          dataSource={eligibleStudents}
          rowKey="studentId"
          loading={eligibleLoading}
          locale={{ emptyText: <Empty description="暂无符合条件的在住人员" /> }}
          pagination={{ pageSize: 6, showSizeChanger: false }}
          rowSelection={{
            selectedRowKeys: effectiveSelectedEligibleIds,
            onChange: (keys) => onSelectEligible(keys as number[]),
          }}
        />
      </Modal>

      <Modal
        title="收取押金"
        open={createModal}
        onOk={onCreate}
        onCancel={onCloseCreate}
        okText="确认"
        confirmLoading={saving}
      >
        <Form form={createForm} layout="vertical">
          <Form.Item
            name="studentId"
            label="学生"
            rules={[{ required: true, message: '请选择学生' }]}
          >
            <Select
              showSearch
              optionFilterProp="label"
              placeholder="搜索并选择学生"
              options={studentOptions}
            />
          </Form.Item>
          <Form.Item name="amount" label="本次收取金额（元）" rules={[{ required: true }]}>
            <InputNumber min={0.01} precision={2} style={{ width: '100%' }} />
          </Form.Item>
          <Form.Item name="paidDate" label="收取日期" rules={[{ required: true }]}>
            <DatePicker style={{ width: '100%' }} placeholder="选择收取日期" format="YYYY-MM-DD" />
          </Form.Item>
          <Form.Item name="notes" label="备注">
            <Input.TextArea rows={2} />
          </Form.Item>
        </Form>
      </Modal>

      <Modal
        title={`退还押金 - ${refundModal?.student?.name}`}
        open={!!refundModal}
        onOk={onRefund}
        onCancel={onCloseRefund}
        okText="确认退还"
        confirmLoading={saving}
      >
        <Form form={refundForm} layout="vertical">
          <div style={{ marginBottom: 16, padding: 12, background: '#f5f5f5', borderRadius: 8 }}>
            当前可用押金: <strong>¥{Number(refundModal?.amount || 0).toFixed(2)}</strong>
          </div>
          <Form.Item name="refundDate" label="退还日期" rules={[{ required: true }]}>
            <DatePicker style={{ width: '100%' }} placeholder="选择退还日期" format="YYYY-MM-DD" />
          </Form.Item>
          <Form.Item name="notes" label="备注">
            <Input.TextArea rows={2} />
          </Form.Item>
        </Form>
      </Modal>

      <Modal
        title={`押金详情 - ${detailModal?.student?.name}`}
        open={!!detailModal}
        onCancel={onCloseDetail}
        footer={null}
        width={640}
      >
        {detailModal && (
          <div>
            <Card size="small" style={{ marginBottom: 16 }}>
              <p>
                <strong>当前可用押金:</strong> ¥{Number(detailModal.amount).toFixed(2)}
              </p>
              <p>
                <strong>最近收取日期:</strong> {detailModal.paidDate}
              </p>
              <p>
                <strong>状态:</strong>{' '}
                <Tag color={statusMap[detailModal.status]?.color}>
                  {statusMap[detailModal.status]?.text || detailModal.status}
                </Tag>
              </p>
              {detailModal.notes && (
                <p>
                  <strong>备注:</strong> {detailModal.notes}
                </p>
              )}
            </Card>

            <div
              style={{
                display: 'flex',
                justifyContent: 'space-between',
                alignItems: 'center',
                marginBottom: 8,
              }}
            >
              <h4 style={{ margin: 0 }}>分期记录</h4>
              <PermissionButton
                permission="deposit:edit"
                size="small"
                type="primary"
                icon={<PlusOutlined />}
                onClick={() => onOpenInstallment(detailModal.id)}
              >
                添加分期
              </PermissionButton>
            </div>
            {detailModal.installments && detailModal.installments.length > 0 ? (
              <Table
                size="small"
                pagination={false}
                rowKey="id"
                dataSource={detailModal.installments}
                columns={[
                  {
                    title: '金额',
                    dataIndex: 'amount',
                    render: (value: number) => `¥${value.toFixed(2)}`,
                  },
                  { title: '到期日', dataIndex: 'dueDate' },
                  {
                    title: '实付日',
                    dataIndex: 'paidDate',
                    render: (value: string, item: any) => (
                      <EditableCell
                        value={value}
                        editor="date"
                        permission="deposit:edit"
                        onSave={async (next) =>
                          onSaveInstallmentCell(item.id, 'paidDate', next)
                        }
                      >
                        {value || '-'}
                      </EditableCell>
                    ),
                  },
                  {
                    title: '状态',
                    dataIndex: 'status',
                    render: (value: string, item: any) => (
                      <EditableCell
                        value={value}
                        editor="select"
                        options={[
                          { value: 'pending', label: '待缴' },
                          { value: 'paid', label: '已缴' },
                          { value: 'overdue', label: '逾期' },
                        ]}
                        permission="deposit:edit"
                        onSave={async (next) =>
                          onSaveInstallmentCell(item.id, 'status', next)
                        }
                      >
                        <Tag color={installmentStatusMap[value]?.color}>
                          {installmentStatusMap[value]?.text || value}
                        </Tag>
                      </EditableCell>
                    ),
                  },
                  {
                    title: '操作',
                    render: (_: unknown, item: any) => (
                      <Space>
                        {item.status === 'pending' && (
                          <PermissionButton
                            permission="deposit:edit"
                            size="small"
                            type="primary"
                            icon={<DollarOutlined />}
                            onClick={() => onPayInstallment(item.id)}
                          >
                            标记已缴
                          </PermissionButton>
                        )}
                        <Popconfirm
                          title="确定归档？"
                          onConfirm={() => onDeleteInstallment(item.id)}
                        >
                          <PermissionButton
                            permission="deposit:delete"
                            size="small"
                            danger
                            icon={<InboxOutlined />}
                          >
                            归档
                          </PermissionButton>
                        </Popconfirm>
                      </Space>
                    ),
                  },
                ]}
              />
            ) : (
              <p style={{ color: '#999' }}>暂无分期记录</p>
            )}
          </div>
        )}
      </Modal>

      <Modal
        title="添加分期"
        open={installmentModal != null}
        onOk={onAddInstallment}
        onCancel={onCloseInstallment}
        okText="确认"
      >
        <Form form={installmentForm} layout="vertical">
          <Form.Item name="amount" label="分期金额（元）" rules={[{ required: true }]}>
            <InputNumber min={0.01} precision={2} style={{ width: '100%' }} />
          </Form.Item>
          <Form.Item name="dueDate" label="到期日期" rules={[{ required: true }]}>
            <DatePicker style={{ width: '100%' }} placeholder="选择到期日期" format="YYYY-MM-DD" />
          </Form.Item>
        </Form>
      </Modal>
    </>
  );
};
