import type { EpisodeMappingPreviewItem } from "@umt/contracts";
import { ArrowRight } from "lucide-react";
import { StatusBadge } from "~/components/console/status-badge.tsx";
import { cn, formatDateTime } from "~/lib/utils.ts";
import { canonicalText, methodText, sourceText, VALIDATION } from "./model.ts";

// 模拟预览表格:原始季集 → 当前结果 → 套用草稿后的结果、方式、校验;与当前不同的行高亮并标「有变化」。

export function PreviewTable({
  items,
  hasDraft,
  empty = "这部作品还没有绑定的资源。",
}: {
  items: EpisodeMappingPreviewItem[];
  /** 有草稿时列名写「套用后」,否则写「重算」 */
  hasDraft: boolean;
  empty?: string;
}) {
  if (!items.length) return <p className="px-4 py-6 text-caption text-muted-foreground sm:px-5">{empty}</p>;
  return (
    <div className="overflow-x-auto">
      <table className="w-full min-w-[44rem] text-caption">
        <thead>
          <tr className="border-b border-border/60 text-left text-meta text-muted-foreground">
            <th className="px-4 py-2 font-medium">资源</th>
            <th className="px-3 py-2 font-medium">原始</th>
            <th className="px-3 py-2 font-medium">当前</th>
            <th className="px-3 py-2 font-medium">{hasDraft ? "套用后" : "重算"}</th>
            <th className="px-3 py-2 font-medium">方式</th>
            <th className="px-4 py-2 font-medium">校验</th>
          </tr>
        </thead>
        <tbody>
          {items.map((it) => {
            const v = VALIDATION[it.validation];
            return (
              <tr
                key={it.sourceReleaseId}
                data-changed={it.changed || undefined}
                className={cn("border-b border-border/60 last:border-b-0", it.changed && "bg-foreground/[0.04]")}
              >
                <td className="max-w-[22rem] px-4 py-2 align-top">
                  <div className="font-mono text-meta break-all text-foreground">{it.title}</div>
                  <div className="mt-0.5 text-meta text-muted-foreground">
                    {[it.releaseGroup, formatDateTime(it.publishedAt)].filter(Boolean).join(" · ")}
                  </div>
                </td>
                <td className="px-3 py-2 align-top font-mono tabular-nums">{sourceText(it.preview)}</td>
                <td className="px-3 py-2 align-top">
                  <div className="font-mono tabular-nums">{canonicalText(it.current)}</div>
                  <div className="text-meta text-muted-foreground">{methodText(it.current)}</div>
                </td>
                <td className="px-3 py-2 align-top">
                  <div className="inline-flex items-center gap-1 font-mono tabular-nums">
                    {it.changed ? <ArrowRight aria-hidden className="h-3 w-3 text-muted-foreground" /> : null}
                    <span className={cn(it.changed && "font-semibold text-foreground")}>
                      {canonicalText(it.preview)}
                    </span>
                  </div>
                  {it.changed ? <div className="text-meta text-muted-foreground">有变化</div> : null}
                </td>
                <td className="px-3 py-2 align-top">{methodText(it.preview)}</td>
                <td className="px-4 py-2 align-top">
                  <StatusBadge tone={v.tone}>{v.label}</StatusBadge>
                </td>
              </tr>
            );
          })}
        </tbody>
      </table>
    </div>
  );
}