import { useForm } from "react-hook-form";
import { zodResolver } from "@hookform/resolvers/zod";
import { insertUserSchema } from "@shared/schema";
import { useLocation } from "wouter";
import { useMutation } from "@tanstack/react-query";
import { apiRequest, queryClient } from "@/lib/queryClient";
import { Form, FormControl, FormField, FormItem, FormLabel, FormMessage } from "@/components/ui/form";
import { Input } from "@/components/ui/input";
import { Button } from "@/components/ui/button";
import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
import { useToast } from "@/hooks/use-toast";
import { ShieldCheck } from "lucide-react";

export default function SetupWizard() {
    const [, setLocation] = useLocation();
    const { toast } = useToast();

    const form = useForm({
        resolver: zodResolver(insertUserSchema),
        defaultValues: {
            username: "",
            email: "",
            password: "",
        },
    });

    const setupMutation = useMutation({
        mutationFn: async (data: any) => {
            const res = await apiRequest("POST", "/api/setup", data);
            return res.json();
        },
        onSuccess: (user) => {
            queryClient.setQueryData(["/api/user"], user);
            queryClient.invalidateQueries({ queryKey: ["/api/setup/status"] });
            setLocation("/");
            toast({
                title: "Setup Complete",
                description: "Super Administrator created successfully.",
            });
        },
        onError: (error: Error) => {
            toast({
                title: "Setup Failed",
                description: error.message,
                variant: "destructive"
            });
        }
    });

    return (
        <div className="min-h-screen flex flex-col items-center justify-center p-4 bg-gradient-to-br from-background to-muted">
            <Card className="w-full max-w-md border-2 border-primary/20 shadow-xl">
                <CardHeader className="text-center">
                    <div className="mx-auto bg-primary/10 p-3 rounded-full w-fit mb-4">
                        <ShieldCheck className="w-10 h-10 text-primary" />
                    </div>
                    <CardTitle className="text-2xl">First-Time Setup</CardTitle>
                    <CardDescription>
                        Create your Super Administrator account to get started.
                    </CardDescription>
                </CardHeader>
                <CardContent>
                    <Form {...form}>
                        <form onSubmit={form.handleSubmit((data) => setupMutation.mutate(data))} className="space-y-4">
                            <FormField
                                control={form.control}
                                name="username"
                                render={({ field }) => (
                                    <FormItem>
                                        <FormLabel>Admin Username</FormLabel>
                                        <FormControl>
                                            <Input placeholder="admin" {...field} />
                                        </FormControl>
                                        <FormMessage />
                                    </FormItem>
                                )}
                            />
                            <FormField
                                control={form.control}
                                name="email"
                                render={({ field }) => (
                                    <FormItem>
                                        <FormLabel>Admin Email</FormLabel>
                                        <FormControl>
                                            <Input type="email" placeholder="admin@example.com" {...field} />
                                        </FormControl>
                                        <FormMessage />
                                    </FormItem>
                                )}
                            />
                            <FormField
                                control={form.control}
                                name="password"
                                render={({ field }) => (
                                    <FormItem>
                                        <FormLabel>Password</FormLabel>
                                        <FormControl>
                                            <Input type="password" placeholder="••••••••" {...field} />
                                        </FormControl>
                                        <FormMessage />
                                    </FormItem>
                                )}
                            />
                            <Button type="submit" className="w-full" disabled={setupMutation.isPending}>
                                {setupMutation.isPending ? "Creating Admin..." : "Create Administrator"}
                            </Button>
                        </form>
                    </Form>
                </CardContent>
            </Card>
        </div>
    );
}