"use client";

import Link from "next/link";
import { PanelRightOpen } from "lucide-react";
import { useCallback, useEffect, useMemo, useState } from "react";
import { AppShell } from "@/components/AppShell";
import { EmptyState, ErrorState, LoadingState } from "@/components/StateBlocks";
import { TechnicalRetryDetails } from "@/components/TechnicalRetryDetails";
import { getFlowLedgerVideos } from "@/lib/api/client";
import type { FlowLedgerVideosResponse } from "@/lib/api/types";
import { videoFromApi } from "@/lib/flow-ledger/build";
import { actionLabel, mediaStatusLabel, metricLabel, methodLabel, platformLabel, scoreItemsText } from "@/lib/flow-ledger/business";
import { asRecord, text } from "@/lib/flow-ledger/format";
import type { VideoRef } from "@/lib/flow-ledger/types";

export function QueryVideosPage({ runId, queryId }: { runId: string; queryId: string }) {
  const [data, setData] = useState<FlowLedgerVideosResponse | null>(null);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState<string | null>(null);

  const load = useCallback(async () => {
    setLoading(true);
    setError(null);
    try {
      const debug = new URLSearchParams(window.location.search).get("debug") === "1";
      setData(await getFlowLedgerVideos(runId, queryId, debug));
    } catch (err) {
      setError(err instanceof Error ? err.message : String(err));
    } finally {
      setLoading(false);
    }
  }, [queryId, runId]);

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

  const query = asRecord(data?.query);
  const videos = useMemo(() => (data?.videos || []).map(videoFromApi), [data]);

  return (
    <AppShell title="首轮搜到的视频" subtitle={query.text ? `搜索词：${text(query.text)}` : "查看这个搜索词搜到了哪些内容"} runId={runId} showBack onRefresh={load}>
      {loading ? <LoadingState /> : null}
      {error ? <ErrorState message={error} /> : null}
      {!loading && !error && !videos.length ? <EmptyState label="这个搜索词首轮没有搜到可展示的视频" /> : null}
      {data ? (
        <>
          <details className="declarations" open>
            <summary>
              <span className="kw">搜索词</span> <b>{text(query.text, "搜索词待确认")}</b>
              <span className="decl-purpose">来源：{methodLabel(text(query.method, ""))}</span>
              <span className="tag-mini">首轮视频 {Number(data.summary.total || videos.length)}</span>
            </summary>
            <div className="decl-body">
              <Summary label="判断汇总" value={`入池 ${Number(data.summary.pool_count || 0)} · 待复看 ${Number(data.summary.review_count || 0)} · 技术问题 ${Number(data.summary.technical_retry_count || 0)} · 淘汰 ${Number(data.summary.reject_count || 0)}`} />
              <Summary label="视频保存" value={`${mediaStatusLabel("oss_uploaded")} ${Number(data.summary.oss_uploaded_count || 0)} · ${mediaStatusLabel("oss_upload_pending")} ${Number(data.summary.oss_pending_count || 0)} · ${mediaStatusLabel("oss_upload_failed")} ${Number(data.summary.oss_failed_count || 0)}`} />
              <Summary label="数据来源" value={data.data_origin_label} />
            </div>
          </details>
          <section className="detail-table-wrap">
            <table className="detail-table">
              <thead>
                <tr>
                  <th>#</th>
                  <th>视频</th>
                  <th>作者 / 平台</th>
                  <th>互动</th>
                  <th>判断</th>
                  <th>评分详情</th>
                  <th>视频保存</th>
                  <th>操作</th>
                </tr>
              </thead>
              <tbody>
                {videos.map((video, index) => (
                  <VideoRow
                    key={`${video.id}-${index}`}
                    index={index}
                    runId={runId}
                    video={video}
                  />
                ))}
              </tbody>
            </table>
          </section>
        </>
      ) : null}
    </AppShell>
  );
}

function Summary({ label, value }: { label: string; value: string }) {
  return (
    <div className="decl-section">
      <div className="decl-label">{label}</div>
      <div className="decl-row">{value}</div>
    </div>
  );
}

function VideoRow({ index, runId, video }: { index: number; runId: string; video: VideoRef }) {
  return (
    <tr>
      <td>{index + 1}</td>
      <td>
        <Link className="title-link" href={`/runs/${encodeURIComponent(runId)}/videos/${encodeURIComponent(video.contentDiscoveryId || video.id)}`}>
          {video.title}
        </Link>
      </td>
      <td>
        <strong>{video.author}</strong>
        <div className="muted">{platformLabel(video.platform)}</div>
      </td>
      <td>
        <span className="chip">{metricLabel(video)}</span>
      </td>
      <td>
        <span className="chip blue">{actionLabel(video.decisionAction)}</span>
        {video.decisionAction === "TECHNICAL_RETRY_REQUIRED" ? (
          <div className="muted">{technicalRetryShortText(video)}</div>
        ) : null}
        {video.decisionAction === "TECHNICAL_RETRY_REQUIRED" ? <TechnicalRetryDetails detail={video.technicalRetryDetail} compact /> : null}
      </td>
      <td>
        <div className="score-mini">{scoreItemsText(video.scoreItems)}</div>
      </td>
      <td>
        <span className={`chip ${video.mediaStatus === "oss_uploaded" ? "green" : "yellow"}`}>{video.mediaStatusLabel}</span>
        {video.mediaFailureReason ? <div className="muted">{video.mediaFailureReason}</div> : null}
      </td>
      <td>
        <Link className="mini-button" href={`/runs/${encodeURIComponent(runId)}/videos/${encodeURIComponent(video.contentDiscoveryId || video.id)}`}>
          <PanelRightOpen size={13} />
          看详情
        </Link>
      </td>
    </tr>
  );
}

function technicalRetryShortText(video: VideoRef): string {
  const detail = video.technicalRetryDetail;
  if (!detail) return "系统需要重试后再判断";
  const stage = detail.stageLabel || "技术问题";
  const reason = detail.briefReason || detail.failureLabel || detail.failureType || "系统需要重试后再判断";
  return `${stage}：${reason}`;
}