/**
 * AI 调度状态页面。
 *
 * - 顶部筛选器：event_type / status / site_id / 日期范围
 * - 统计行：今日去重跳过数
 * - 主体：分页表格（事件类型、会员、状态、执行链、耗时、操作列）
 * - 操作列：查看详情 Modal、手动重跑 Popconfirm
 */

import React, { useEffect, useState, useCallback } from "react";
import {
  Card, Table, Tag, Select, Button, DatePicker, Row, Col, Space,
  Statistic, Modal, Popconfirm, Descriptions, message, Typography,
} from "antd";
import { ReloadOutlined } from "@ant-design/icons";
import type { ColumnsType } from "antd/es/table";
import {
  getTriggerJobs, getTriggerJobDetail, retryTriggerJob,
  type TriggerJobItem, type TriggerJobDetailResponse, type TriggerJobQuery,
} from "../api/adminAI";

const { RangePicker } = DatePicker;
const { Title } = Typography;

const STATUS_COLOR: Record<string, string> = {
  pending: "default", running: "processing", success: "success",
  failed: "error", skipped_duplicate: "warning", timeout: "orange",
};

function fmtTime(raw: string | null): string {
  if (!raw) return "—";
  const d = new Date(raw);
  return Number.isNaN(d.getTime()) ? raw : d.toLocaleString("zh-CN");
}

function calcDuration(start: string | null, end: string | null): string {
  if (!start || !end) return "—";
  const ms = new Date(end).getTime() - new Date(start).getTime();
  if (Number.isNaN(ms) || ms < 0) return "—";
  if (ms < 1000) return `${ms}ms`;
  return `${(ms / 1000).toFixed(1)}s`;
}

const AITriggerJobs: React.FC = () => {
  const [items, setItems] = useState<TriggerJobItem[]>([]);
  const [total, setTotal] = useState(0);
  const [skipped, setSkipped] = useState(0);
  const [loading, setLoading] = useState(false);
  const [page, setPage] = useState(1);
  const [pageSize] = useState(20);

  // 筛选状态
  const [eventType, setEventType] = useState<string | undefined>();
  const [status, setStatus] = useState<string | undefined>();
  const [siteId, setSiteId] = useState<number | undefined>();
  const [dateRange, setDateRange] = useState<[string, string] | null>(null);

  // 详情 Modal
  const [detailVisible, setDetailVisible] = useState(false);
  const [detail, setDetail] = useState<TriggerJobDetailResponse | null>(null);
  const [detailLoading, setDetailLoading] = useState(false);

  const load = useCallback(async () => {
    setLoading(true);
    try {
      const params: TriggerJobQuery = {
        page, page_size: pageSize,
        event_type: eventType, status, site_id: siteId,
        date_from: dateRange?.[0], date_to: dateRange?.[1],
      };
      const res = await getTriggerJobs(params);
      setItems(res.items);
      setTotal(res.total);
      setSkipped(res.today_skipped_duplicates);
    } catch {
      message.error("加载调度任务失败");
    } finally {
      setLoading(false);
    }
  }, [page, pageSize, eventType, status, siteId, dateRange]);

  useEffect(() => { load(); }, [load]);

  const handleViewDetail = async (id: number) => {
    setDetailLoading(true);
    setDetailVisible(true);
    try {
      const res = await getTriggerJobDetail(id);
      setDetail(res);
    } catch {
      message.error("加载详情失败");
    } finally {
      setDetailLoading(false);
    }
  };

  const handleRetry = async (id: number) => {
    try {
      const res = await retryTriggerJob(id);
      message.success(`已创建重跑任务 #${res.trigger_job_id}`);
      load();
    } catch {
      message.error("重跑失败");
    }
  };

  const columns: ColumnsType<TriggerJobItem> = [
    { title: "ID", dataIndex: "id", key: "id", width: 70 },
    { title: "事件类型", dataIndex: "event_type", key: "event_type", width: 140 },
    { title: "会员 ID", dataIndex: "member_id", key: "member_id", width: 100, render: (v) => v ?? "—" },
    {
      title: "状态", dataIndex: "status", key: "status", width: 120,
      render: (v: string) => <Tag color={STATUS_COLOR[v] ?? "default"}>{v}</Tag>,
    },
    { title: "执行链", dataIndex: "app_chain", key: "app_chain", ellipsis: true, render: (v) => v ?? "—" },
    {
      title: "强制执行", dataIndex: "is_forced", key: "is_forced", width: 80,
      render: (v: boolean) => v ? <Tag color="blue">是</Tag> : "否",
    },
    {
      title: "耗时", key: "duration", width: 90,
      render: (_: unknown, r: TriggerJobItem) => calcDuration(r.started_at, r.finished_at),
    },
    { title: "创建时间", dataIndex: "created_at", key: "created_at", width: 170, render: fmtTime },
    {
      title: "操作", key: "action", width: 160, fixed: "right" as const,
      render: (_: unknown, r: TriggerJobItem) => (
        <Space>
          <Button size="small" onClick={() => handleViewDetail(r.id)}>详情</Button>
          <Popconfirm title="确认手动重跑此任务？" onConfirm={() => handleRetry(r.id)}>
            <Button size="small" type="link" danger>重跑</Button>
          </Popconfirm>
        </Space>
      ),
    },
  ];

  return (
    <div>
      <Row justify="space-between" align="middle" style={{ marginBottom: 16 }}>
        <Title level={4} style={{ margin: 0 }}>AI 调度状态</Title>
        <Button icon={<ReloadOutlined />} onClick={load} loading={loading}>刷新</Button>
      </Row>

      {/* 筛选器行 */}
      <Card size="small" style={{ marginBottom: 16 }}>
        <Space wrap>
          <Select
            allowClear placeholder="事件类型" style={{ width: 160 }}
            value={eventType} onChange={(v) => { setEventType(v); setPage(1); }}
            options={[
              { label: "consumption", value: "consumption" },
              { label: "note", value: "note" },
              { label: "task_assign", value: "task_assign" },
              { label: "coach_consumption", value: "coach_consumption" },
              { label: "scheduled", value: "scheduled" },
            ]}
          />
          <Select
            allowClear placeholder="状态" style={{ width: 140 }}
            value={status} onChange={(v) => { setStatus(v); setPage(1); }}
            options={[
              { label: "pending", value: "pending" },
              { label: "running", value: "running" },
              { label: "success", value: "success" },
              { label: "failed", value: "failed" },
              { label: "skipped_duplicate", value: "skipped_duplicate" },
            ]}
          />
          <Select
            allowClear placeholder="门店" style={{ width: 180 }}
            value={siteId} onChange={(v) => { setSiteId(v); setPage(1); }}
            options={[{ label: "默认门店", value: 2790685415443269 }]}
          />
          <RangePicker
            onChange={(_, dateStrings) => {
              setDateRange(dateStrings[0] ? [dateStrings[0], dateStrings[1]] : null);
              setPage(1);
            }}
          />
        </Space>
      </Card>

      {/* 统计行 */}
      <Row style={{ marginBottom: 16 }}>
        <Col>
          <Statistic title="今日去重跳过数" value={skipped} />
        </Col>
      </Row>

      {/* 主体表格 */}
      <Table<TriggerJobItem>
        columns={columns}
        dataSource={items}
        rowKey="id"
        loading={loading}
        scroll={{ x: 1100 }}
        pagination={{
          current: page, pageSize, total,
          onChange: (p) => setPage(p),
          showTotal: (t) => `共 ${t} 条`,
        }}
      />

      {/* 详情 Modal */}
      <Modal
        title={`调度任务详情 #${detail?.id ?? ""}`}
        open={detailVisible}
        onCancel={() => { setDetailVisible(false); setDetail(null); }}
        footer={null} width={640}
        loading={detailLoading}
      >
        {detail && (
          <Descriptions column={2} bordered size="small">
            <Descriptions.Item label="事件类型">{detail.event_type}</Descriptions.Item>
            <Descriptions.Item label="状态">
              <Tag color={STATUS_COLOR[detail.status] ?? "default"}>{detail.status}</Tag>
            </Descriptions.Item>
            <Descriptions.Item label="会员 ID">{detail.member_id ?? "—"}</Descriptions.Item>
            <Descriptions.Item label="门店 ID">{detail.site_id}</Descriptions.Item>
            <Descriptions.Item label="执行链">{detail.app_chain ?? "—"}</Descriptions.Item>
            <Descriptions.Item label="连接器">{detail.connector_type}</Descriptions.Item>
            <Descriptions.Item label="强制执行">{detail.is_forced ? "是" : "否"}</Descriptions.Item>
            <Descriptions.Item label="耗时">{calcDuration(detail.started_at, detail.finished_at)}</Descriptions.Item>
            <Descriptions.Item label="创建时间" span={2}>{fmtTime(detail.created_at)}</Descriptions.Item>
            {detail.error_message && (
              <Descriptions.Item label="错误信息" span={2}>
                <pre style={{ margin: 0, whiteSpace: "pre-wrap", maxHeight: 200, overflow: "auto" }}>
                  {detail.error_message}
                </pre>
              </Descriptions.Item>
            )}
            {detail.payload && (
              <Descriptions.Item label="Payload" span={2}>
                <pre style={{ margin: 0, whiteSpace: "pre-wrap", maxHeight: 200, overflow: "auto" }}>
                  {JSON.stringify(detail.payload, null, 2)}
                </pre>
              </Descriptions.Item>
            )}
          </Descriptions>
        )}
      </Modal>
    </div>
  );
};

export default AITriggerJobs;