"use client";

/**
 * 批量测试用例详情抽屉。
 * 当前展示前端 mock 数据，后续可直接替换为真实执行事件与校验结果。
 */

import {
  CheckCircle2,
  Circle,
  Loader2,
  MessageSquareText,
  Target,
  TriangleAlert,
} from "lucide-react";

import { BatchCaseStatusBadge } from "@/components/batch-test/batch-case-status";
import {
  Sheet,
  SheetContent,
  SheetDescription,
  SheetHeader,
  SheetTitle,
} from "@/components/ui/sheet";
import type { BatchRunCase } from "@/data/batch-run";
import { cn } from "@/lib/utils";

type BatchCaseDetailDrawerProps = {
  item: BatchRunCase | null;
  assistantName: string;
  onClose: () => void;
};

export function BatchCaseDetailDrawer({
  item,
  assistantName,
  onClose,
}: BatchCaseDetailDrawerProps) {
  return (
    <Sheet
      open={Boolean(item)}
      onOpenChange={(open) => {
        if (!open) onClose();
      }}
    >
      <SheetContent
        side="right"
        className="w-[min(92vw,620px)] border-hairline bg-card p-0 sm:max-w-[620px]"
      >
        {item && (
          <>
            <SheetHeader className="border-b border-hairline px-6 py-5 pr-16">
              <p className="text-xs font-medium tracking-[0.08em] text-muted-soft uppercase">
                用例详情
              </p>
              <SheetTitle className="text-lg leading-7">
                {item.name}
              </SheetTitle>
              <SheetDescription>
                被测助手：{assistantName} · 当前为前端 Mock 结果
              </SheetDescription>
            </SheetHeader>

            <div className="min-h-0 flex-1 overflow-y-auto px-6 py-6">
              <div className="space-y-6">
                <section className="flex items-center justify-between rounded-2xl border border-hairline bg-canvas-soft px-4 py-3.5">
                  <div>
                    <p className="text-xs text-muted-soft">当前状态</p>
                    <p className="mt-1 text-sm text-muted-foreground">
                      {statusDescription(item)}
                    </p>
                  </div>
                  <BatchCaseStatusBadge status={item.status} />
                </section>

                <DetailSection
                  icon={<Target size={16} />}
                  title="预期结果"
                  value={item.expected}
                />

                {(item.status === "waiting" || item.status === "running") && (
                  <ExecutionTimeline status={item.status} />
                )}

                {(item.status === "pass" || item.status === "fail") && (
                  <DetailSection
                    icon={<MessageSquareText size={16} />}
                    title="实际回复"
                    value={item.actual}
                  />
                )}

                {item.status === "fail" && item.failReason && (
                  <DetailSection
                    icon={<TriangleAlert size={16} />}
                    title="失败原因（LLM 判断）"
                    value={item.failReason}
                    tone="destructive"
                  />
                )}

                {item.status === "skipped" && (
                  <div className="rounded-2xl border border-dashed border-hairline-strong px-4 py-4 text-sm leading-6 text-muted-foreground">
                    该用例未执行，因此没有实际回复与判断结果。
                  </div>
                )}
              </div>
            </div>
          </>
        )}
      </SheetContent>
    </Sheet>
  );
}

function statusDescription(item: BatchRunCase): string {
  const descriptions = {
    waiting: "已加入执行队列，正在等待可用并发。",
    running: "正在请求助手响应，结果尚未生成。",
    pass: "执行与结果判断均已完成。",
    fail: "执行完成，但实际回复未达到预期。",
    skipped: "本轮运行已结束，该用例未执行。",
  } as const;
  return descriptions[item.status];
}

function DetailSection({
  icon,
  title,
  value,
  tone = "default",
}: {
  icon: React.ReactNode;
  title: string;
  value: string;
  tone?: "default" | "destructive";
}) {
  return (
    <section>
      <div
        className={cn(
          "flex items-center gap-2 text-sm font-medium text-foreground",
          tone === "destructive" && "text-destructive",
        )}
      >
        {icon}
        <h3>{title}</h3>
      </div>
      <p
        className={cn(
          "mt-2.5 rounded-2xl border border-hairline bg-canvas-soft px-4 py-3.5 text-sm leading-6 text-muted-foreground",
          tone === "destructive" &&
            "border-destructive/20 bg-destructive/5 text-foreground",
        )}
      >
        {value}
      </p>
    </section>
  );
}

function ExecutionTimeline({ status }: { status: "waiting" | "running" }) {
  const isRunning = status === "running";
  const steps = [
    {
      label: "载入测试上下文",
      detail: isRunning ? "已完成" : "等待开始",
      state: isRunning ? "done" : "pending",
    },
    {
      label: "请求助手响应",
      detail: isRunning ? "生成中（Mock）" : "尚未开始",
      state: isRunning ? "active" : "pending",
    },
    {
      label: "执行结果判断",
      detail: "尚未开始",
      state: "pending",
    },
  ] as const;

  return (
    <section>
      <div className="flex items-center gap-2 text-sm font-medium text-foreground">
        <Loader2 size={16} className={cn(isRunning && "animate-spin")} />
        <h3>执行进度</h3>
      </div>
      <ol className="mt-3 rounded-2xl border border-hairline px-4 py-1">
        {steps.map((step) => (
          <li
            key={step.label}
            className="flex items-center gap-3 border-b border-hairline py-3.5 last:border-b-0"
          >
            {step.state === "done" ? (
              <CheckCircle2 size={17} className="shrink-0 text-success" />
            ) : step.state === "active" ? (
              <Loader2 size={17} className="shrink-0 animate-spin text-primary" />
            ) : (
              <Circle size={17} className="shrink-0 text-muted-soft" />
            )}
            <span className="min-w-0 flex-1 text-sm text-foreground">
              {step.label}
            </span>
            <span className="text-xs text-muted-soft">{step.detail}</span>
          </li>
        ))}
      </ol>
    </section>
  );
}