import { useEffect, useState } from "react";
import { useNavigate, useParams } from "react-router-dom";
import {
  Button,
  Card,
  Descriptions,
  Form,
  Grid,
  Input,
  InputNumber,
  InputTag,
  Message,
  Modal,
  Select,
  Space,
  Switch,
  Table,
  Tag,
} from "@arco-design/web-react";
import {
  IconArrowLeft,
  IconPlus,
  IconRefresh,
} from "@arco-design/web-react/icon";
import type { ApiResponse, Drama, Episode, UploadTask } from "../api/types";
import { api } from "../api/client";
import { usePageData } from "../hooks/usePageData";

const { Row, Col } = Grid;

const STATUS_OPTIONS: { value: string; label: string }[] = [
  { value: "draft", label: "草稿" },
  { value: "scheduled", label: "定时发布" },
  { value: "published", label: "已发布" },
  { value: "offline", label: "已下线" },
];

const REVIEW_STATUS_LABEL: Record<string, string> = {
  not_submitted: "未提交",
  pending: "待审核",
  reviewing: "审核中",
  approved: "已通过",
  rejected: "已拒绝",
};

const PUBLISH_STATUS_LABEL: Record<string, string> = {
  draft: "草稿",
  scheduled: "定时发布",
  published: "已发布",
  offline: "已下线",
};

function DramasPage() {
  const { id } = useParams();

  if (id) {
    return <DramaDetailPage dramaId={Number(id)} />;
  }

  return <DramaListPage />;
}

function DramaListPage() {
  const navigate = useNavigate();
  const { data, loading, reload } = usePageData<Drama>("/api/admin/v1/dramas");
  const [visible, setVisible] = useState(false);
  const [creating, setCreating] = useState(false);

  const createDrama = async (values: Partial<Drama>) => {
    setCreating(true);
    try {
      await api.post("/api/admin/v1/dramas", values);
      Message.success("短剧创建成功");
      setVisible(false);
      await reload();
    } finally {
      setCreating(false);
    }
  };

  return (
    <Card
      className="section-card"
      title="短剧管理"
      extra={
        <Button
          type="primary"
          icon={<IconPlus />}
          onClick={() => setVisible(true)}
        >
          新增短剧
        </Button>
      }
    >
      <Table
        rowKey="id"
        loading={loading}
        data={data.list}
        pagination={{
          total: data.pagination.total,
          pageSize: data.pagination.pageSize,
        }}
        columns={[
          { title: "ID", dataIndex: "id", width: 80 },
          { title: "标题", dataIndex: "title" },
          { title: "地区", dataIndex: "region", width: 120 },
          { title: "类型", dataIndex: "type", width: 140 },
          { title: "总集数", dataIndex: "totalEpisodes", width: 100 },
          { title: "已发布", dataIndex: "publishedEpisodes", width: 100 },
          {
            title: "状态",
            dataIndex: "status",
            width: 120,
            render: (status) => (
              <Tag color={status === "published" ? "green" : "gray"}>
                {PUBLISH_STATUS_LABEL[String(status)] || String(status)}
              </Tag>
            ),
          },
          {
            title: "推荐",
            dataIndex: "isRecommended",
            width: 100,
            render: (value) =>
              value ? <Tag color="arcoblue">是</Tag> : <Tag>否</Tag>,
          },
          {
            title: "操作",
            width: 120,
            render: (_, record) => (
              <Button
                type="text"
                onClick={() => navigate(`/dramas/${record.id}`)}
              >
                详情
              </Button>
            ),
          },
        ]}
      />
      <Modal
        title="创建短剧"
        visible={visible}
        onCancel={() => setVisible(false)}
        footer={null}
        style={{ width: 640 }}
      >
        <Form
          layout="vertical"
          onSubmit={createDrama}
          initialValues={{
            status: "draft",
            isRecommended: false,
            sortOrder: 0,
          }}
        >
          <Form.Item label="标题" field="title" rules={[{ required: true }]}>
            <Input placeholder="请输入短剧标题" />
          </Form.Item>
          <Row gutter={16}>
            <Col span={12}>
              <Form.Item label="类型" field="type" rules={[{ required: true }]}>
                <Input placeholder="请输入类型" />
              </Form.Item>
            </Col>
            <Col span={12}>
              <Form.Item label="状态" field="status">
                <Select placeholder="请选择状态">
                  {STATUS_OPTIONS.map((option) => (
                    <Select.Option key={option.value} value={option.value}>
                      {option.label}
                    </Select.Option>
                  ))}
                </Select>
              </Form.Item>
            </Col>
          </Row>
          <Form.Item
            label="封面地址"
            field="coverUrl"
            rules={[{ required: true }]}
          >
            <Input placeholder="请输入封面图片 URL" />
          </Form.Item>
          <Form.Item label="简介" field="description">
            <Input.TextArea
              placeholder="请输入短剧简介"
              autoSize={{ minRows: 2, maxRows: 4 }}
            />
          </Form.Item>
          <Form.Item label="标签" field="tags">
            <InputTag placeholder="输入后回车添加标签" allowClear />
          </Form.Item>
          <Row gutter={16}>
            <Col span={8}>
              <Form.Item label="地区" field="region">
                <Input placeholder="如 中国" />
              </Form.Item>
            </Col>
            <Col span={8}>
              <Form.Item label="语言" field="language">
                <Input placeholder="如 zh-CN" />
              </Form.Item>
            </Col>
            <Col span={8}>
              <Form.Item label="年份" field="year">
                <InputNumber
                  placeholder="如 2026"
                  min={1900}
                  style={{ width: "100%" }}
                />
              </Form.Item>
            </Col>
          </Row>
          <Row gutter={16}>
            <Col span={12}>
              <Form.Item label="排序权重" field="sortOrder">
                <InputNumber
                  placeholder="数值越大越靠前"
                  style={{ width: "100%" }}
                />
              </Form.Item>
            </Col>
            <Col span={12}>
              <Form.Item
                label="推荐"
                field="isRecommended"
                triggerPropName="checked"
              >
                <Switch />
              </Form.Item>
            </Col>
          </Row>
          <div className="modal-actions">
            <Button onClick={() => setVisible(false)}>取消</Button>
            <Button type="primary" htmlType="submit" loading={creating}>
              创建
            </Button>
          </div>
        </Form>
      </Modal>
    </Card>
  );
}

function DramaDetailPage({ dramaId }: { dramaId: number }) {
  const navigate = useNavigate();
  const [drama, setDrama] = useState<Drama | null>(null);
  const [episodes, setEpisodes] = useState<Episode[]>([]);
  const [loading, setLoading] = useState(false);
  const [episodeCount, setEpisodeCount] = useState(1);
  const [uploadingEpisodeId, setUploadingEpisodeId] = useState<number | null>(
    null,
  );

  const loadDetail = async () => {
    setLoading(true);
    try {
      const [dramaResponse, episodeResponse] = await Promise.all([
        api.get<ApiResponse<Drama>>(`/api/admin/v1/dramas/${dramaId}`),
        api.get<ApiResponse<{ list: Episode[] }>>(
          `/api/admin/v1/dramas/${dramaId}/episodes?pageSize=200`,
        ),
      ]);
      setDrama(dramaResponse.data.data);
      setEpisodeCount(dramaResponse.data.data.totalEpisodes || 1);
      setEpisodes(episodeResponse.data.data.list);
    } finally {
      setLoading(false);
    }
  };

  useEffect(() => {
    void loadDetail();
  }, [dramaId]);

  const configureEpisodes = async () => {
    await api.post(`/api/admin/v1/dramas/${dramaId}/episodes/batch`, {
      episodeCount,
    });
    Message.success("剧集数量已更新");
    await loadDetail();
  };

  const updateDramaStatus = async (status: string) => {
    await api.patch(`/api/admin/v1/dramas/${dramaId}`, { status });
    Message.success("短剧状态已更新");
    await loadDetail();
  };

  const uploadEpisodeVideo = async (episode: Episode, file: File) => {
    setUploadingEpisodeId(episode.id);
    try {
      const task = await api.post<ApiResponse<UploadTask>>(
        "/api/admin/v1/media/upload-tasks",
        {
          episodeId: episode.id,
          fileName: file.name,
          contentType: file.type || "video/mp4",
          fileSize: file.size,
        },
      );
      await api.patch(
        `/api/admin/v1/media/upload-tasks/${task.data.data.jobId}/complete`,
        {},
      );
      await api.post("/api/admin/v1/media/review-status/sync", {});
      Message.success("视频上传并审核通过");
      await loadDetail();
    } finally {
      setUploadingEpisodeId(null);
    }
  };

  const publishEpisode = async (episode: Episode) => {
    await api.patch(`/api/admin/v1/episodes/${episode.id}`, {
      publishStatus: "published",
      status: "published",
    });
    Message.success("剧集已发布");
    await loadDetail();
  };

  return (
    <div className="page-stack">
      <Card
        className="section-card"
        loading={loading && !drama}
        title={
          <Space>
            <Button
              icon={<IconArrowLeft />}
              onClick={() => navigate("/dramas")}
            />
            短剧详情
          </Space>
        }
        extra={
          <Space>
            <Button icon={<IconRefresh />} onClick={loadDetail}>
              刷新
            </Button>
            <Button onClick={() => updateDramaStatus("draft")}>设为草稿</Button>
            <Button
              type="primary"
              onClick={() => updateDramaStatus("published")}
            >
              上架短剧
            </Button>
          </Space>
        }
      >
        {drama && (
          <Descriptions
            column={3}
            data={[
              { label: "短剧ID", value: drama.id },
              { label: "名称", value: drama.title },
              { label: "地区", value: drama.region || "-" },
              { label: "类型", value: drama.type },
              { label: "总集数", value: drama.totalEpisodes || 0 },
              { label: "已发布集数", value: drama.publishedEpisodes || 0 },
              {
                label: "状态",
                value: PUBLISH_STATUS_LABEL[drama.status] || drama.status,
              },
              { label: "封面", value: drama.coverUrl },
              { label: "简介", value: drama.description || "-" },
            ]}
          />
        )}
      </Card>

      <Card
        className="section-card"
        title="剧集配置"
        extra={
          <Space>
            <InputNumber
              min={1}
              max={500}
              value={episodeCount}
              onChange={(value) => setEpisodeCount(Number(value) || 1)}
            />
            <Button type="primary" onClick={configureEpisodes}>
              保存集数
            </Button>
          </Space>
        }
      >
        <Table
          rowKey="id"
          loading={loading}
          data={episodes}
          pagination={false}
          columns={[
            { title: "集数", dataIndex: "episodeNo", width: 80 },
            { title: "标题", dataIndex: "title" },
            {
              title: "BytePlus VID",
              dataIndex: "byteplusVid",
              width: 180,
              render: (value) => value || "-",
            },
            {
              title: "尺寸",
              width: 120,
              render: (_, record) =>
                record.width && record.height
                  ? `${record.width}x${record.height}`
                  : "-",
            },
            {
              title: "时长",
              dataIndex: "durationSeconds",
              width: 100,
              render: (value) => (value ? `${value}s` : "-"),
            },
            {
              title: "审核状态",
              dataIndex: "reviewStatus",
              width: 120,
              render: (status) => (
                <Tag color={status === "approved" ? "green" : "orange"}>
                  {REVIEW_STATUS_LABEL[String(status)] || String(status)}
                </Tag>
              ),
            },
            {
              title: "发布状态",
              dataIndex: "publishStatus",
              width: 120,
              render: (status) => (
                <Tag color={status === "published" ? "green" : "gray"}>
                  {PUBLISH_STATUS_LABEL[String(status)] || String(status)}
                </Tag>
              ),
            },
            {
              title: "操作",
              width: 280,
              render: (_, record) => (
                <Space>
                  <Button loading={uploadingEpisodeId === record.id}>
                    <label>
                      上传视频
                      <input
                        type="file"
                        accept="video/*"
                        style={{ display: "none" }}
                        onChange={(event) => {
                          const file = event.target.files?.[0];
                          if (file) {
                            void uploadEpisodeVideo(record, file);
                          }
                          event.target.value = "";
                        }}
                      />
                    </label>
                  </Button>
                  <Button
                    type="text"
                    disabled={record.reviewStatus !== "approved"}
                    onClick={() => publishEpisode(record)}
                  >
                    发布
                  </Button>
                </Space>
              ),
            },
          ]}
        />
      </Card>
    </div>
  );
}

export default DramasPage;