"use client";

import { useState } from "react";
import { useRouter } from "next/navigation";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import { Textarea } from "@/components/ui/textarea";
import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
import { toast } from "sonner";

export default function NewSoftwarePage() {
  const router = useRouter();
  const [loading, setLoading] = useState(false);

  function generateSlug(name: string) {
    return name.toLowerCase().replace(/[^a-z0-9]+/g, "-").replace(/^-|-$/g, "");
  }

  async function handleSubmit(e: React.FormEvent<HTMLFormElement>) {
    e.preventDefault();
    setLoading(true);

    const fd = new FormData(e.currentTarget);
    const res = await fetch("/api/software", {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify({
        name: fd.get("name"),
        slug: fd.get("slug"),
        description: fd.get("description"),
      }),
    });

    if (res.ok) {
      toast.success("创建成功");
      router.push("/admin/software");
      router.refresh();
    } else {
      const err = await res.json();
      toast.error(err.error || "创建失败");
    }
    setLoading(false);
  }

  return (
    <div className="mx-auto max-w-lg space-y-6">
      <h1 className="text-3xl font-bold">新建软件</h1>
      <Card>
        <CardHeader><CardTitle>软件信息</CardTitle></CardHeader>
        <CardContent>
          <form onSubmit={handleSubmit} className="space-y-4">
            <div className="space-y-2">
              <Label htmlFor="name">名称 *</Label>
              <Input
                id="name" name="name" required
                onChange={(e) => {
                  const slugInput = document.getElementById("slug") as HTMLInputElement;
                  if (slugInput) slugInput.value = generateSlug(e.target.value);
                }}
              />
            </div>
            <div className="space-y-2">
              <Label htmlFor="slug">Slug *</Label>
              <Input id="slug" name="slug" required pattern="[a-z0-9-]+" />
            </div>
            <div className="space-y-2">
              <Label htmlFor="description">描述</Label>
              <Textarea id="description" name="description" rows={3} />
            </div>
            <div className="flex gap-3">
              <Button type="submit" disabled={loading}>
                {loading ? "创建中..." : "创建"}
              </Button>
              <Button type="button" variant="outline" onClick={() => router.back()}>
                取消
              </Button>
            </div>
          </form>
        </CardContent>
      </Card>
    </div>
  );
}