import { Sparkles, Check } from "lucide-react";
import { cn } from "../ui/utils";
import { Badge } from "../ui/badge";
import type { ProjectStatus } from "../../data/mock";

/** AI 生成 / AI 能力标签 */
export function AiBadge({ label = "AI 生成", className }: { label?: string; className?: string }) {
  return (
    <span
      className={cn(
        "inline-flex items-center gap-1 rounded-md bg-brand-gradient px-2 py-0.5 text-xs font-medium text-white",
        className,
      )}
    >
      <Sparkles className="size-3" />
      {label}
    </span>
  );
}

/** 页面标题区 */
export function PageHeader({
  title,
  description,
  actions,
}: {
  title: string;
  description?: string;
  actions?: React.ReactNode;
}) {
  return (
    <div className="mb-6 flex items-start justify-between gap-4">
      <div>
        <h1 className="text-foreground">{title}</h1>
        {description && <p className="mt-1 text-sm text-muted-foreground">{description}</p>}
      </div>
      {actions && <div className="flex shrink-0 items-center gap-2">{actions}</div>}
    </div>
  );
}

const statusColor: Record<string, string> = {
  需求委托: "bg-slate-100 text-slate-700",
  立项审批: "bg-amber-100 text-amber-700",
  招标文件: "bg-sky-100 text-sky-700",
  投标开标: "bg-indigo-100 text-indigo-700",
  在线评标: "bg-blue-100 text-blue-700",
  定标审批: "bg-violet-100 text-violet-700",
  合同归档: "bg-teal-100 text-teal-700",
  已完成: "bg-emerald-100 text-emerald-700",
};

export function StatusBadge({ status }: { status: ProjectStatus | string }) {
  return (
    <span
      className={cn(
        "inline-flex items-center rounded-full px-2.5 py-0.5 text-xs font-medium",
        statusColor[status] ?? "bg-slate-100 text-slate-700",
      )}
    >
      {status}
    </span>
  );
}

export function RiskBadge({ risk }: { risk: string }) {
  const map: Record<string, string> = {
    正常: "bg-emerald-50 text-emerald-700 border-emerald-200",
    关注: "bg-amber-50 text-amber-700 border-amber-200",
    高风险: "bg-red-50 text-red-700 border-red-200",
  };
  return (
    <Badge variant="outline" className={cn("border", map[risk])}>
      {risk}
    </Badge>
  );
}

/** AI 审核结论标签 */
export function AiResultTag({ result }: { result: string }) {
  const ok = result === "资质有效";
  const map: Record<string, string> = {
    资质有效: "bg-emerald-50 text-emerald-700 border-emerald-200",
    存在关联风险: "bg-amber-50 text-amber-700 border-amber-200",
    工商异常: "bg-red-50 text-red-700 border-red-200",
  };
  return (
    <span
      className={cn(
        "inline-flex items-center gap-1 rounded-md border px-2 py-0.5 text-xs font-medium",
        map[result] ?? "bg-slate-50 text-slate-700 border-slate-200",
      )}
    >
      <Sparkles className="size-3" />
      {result}
    </span>
  );
}

/** 横向步骤条 */
export function Steps({
  steps,
  current,
}: {
  steps: string[];
  current: number;
}) {
  return (
    <div className="flex items-center">
      {steps.map((s, i) => {
        const done = i < current;
        const active = i === current;
        return (
          <div key={s} className="flex flex-1 items-center last:flex-none">
            <div className="flex items-center gap-2">
              <div
                className={cn(
                  "flex size-8 shrink-0 items-center justify-center rounded-full border-2 text-sm font-medium transition-colors",
                  done && "border-primary bg-primary text-primary-foreground",
                  active && "border-primary bg-primary/10 text-primary",
                  !done && !active && "border-border bg-card text-muted-foreground",
                )}
              >
                {done ? <Check className="size-4" /> : i + 1}
              </div>
              <span
                className={cn(
                  "whitespace-nowrap text-sm",
                  active ? "font-medium text-foreground" : "text-muted-foreground",
                )}
              >
                {s}
              </span>
            </div>
            {i < steps.length - 1 && (
              <div className={cn("mx-3 h-0.5 flex-1 rounded", done ? "bg-primary" : "bg-border")} />
            )}
          </div>
        );
      })}
    </div>
  );
}

export interface ApprovalNode {
  name: string;
  role: string;
  status: "completed" | "current" | "pending";
  time?: string;
}

/** 审批流程跟踪条 */
export function ApprovalTracker({ nodes }: { nodes: ApprovalNode[] }) {
  return (
    <div className="flex flex-col gap-0">
      {nodes.map((n, i) => (
        <div key={n.name} className="flex gap-3">
          <div className="flex flex-col items-center">
            <div
              className={cn(
                "flex size-7 shrink-0 items-center justify-center rounded-full text-xs",
                n.status === "completed" && "bg-emerald-500 text-white",
                n.status === "current" && "bg-primary text-white ring-4 ring-primary/15",
                n.status === "pending" && "bg-muted text-muted-foreground",
              )}
            >
              {n.status === "completed" ? <Check className="size-4" /> : i + 1}
            </div>
            {i < nodes.length - 1 && (
              <div className={cn("my-1 w-0.5 flex-1", n.status === "completed" ? "bg-emerald-500" : "bg-border")} />
            )}
          </div>
          <div className="pb-5">
            <div className="flex items-center gap-2">
              <span className="text-sm font-medium text-foreground">{n.role}</span>
              {n.status === "current" && (
                <span className="rounded bg-primary/10 px-1.5 py-0.5 text-xs text-primary">审批中</span>
              )}
              {n.status === "completed" && (
                <span className="rounded bg-emerald-50 px-1.5 py-0.5 text-xs text-emerald-600">已通过</span>
              )}
            </div>
            <p className="text-xs text-muted-foreground">{n.name}</p>
            {n.time && <p className="mt-0.5 text-xs text-muted-foreground/70">{n.time}</p>}
          </div>
        </div>
      ))}
    </div>
  );
}