"use client"

import { useState } from "react"
import { useSearchParams } from "next/navigation"
import { Card, CardContent, CardHeader, CardTitle, CardDescription } from "@/components/ui/card"
import { Button } from "@/components/ui/button"
import { Input } from "@/components/ui/input"
import { Label } from "@/components/ui/label"
import { Lock, CheckCircle, XCircle } from "lucide-react"
import Link from "next/link"
import { getApiUrl } from "@/lib/api-config"

export default function ResetPasswordPage() {
    const searchParams = useSearchParams()
    const token = searchParams.get("token")

    const [password, setPassword] = useState("")
    const [confirmPassword, setConfirmPassword] = useState("")
    const [loading, setLoading] = useState(false)
    const [success, setSuccess] = useState(false)
    const [error, setError] = useState("")

    const handleSubmit = async (e: React.FormEvent) => {
        e.preventDefault()
        setError("")

        if (password !== confirmPassword) {
            setError("Passwords don't match")
            return
        }

        if (password.length < 8) {
            setError("Password must be at least 8 characters")
            return
        }

        setLoading(true)

        try {
            const res = await fetch(`${getApiUrl()}/auth/reset-password`, {
                method: "POST",
                headers: { "Content-Type": "application/json" },
                body: JSON.stringify({ token, new_password: password })
            })

            if (res.ok) {
                setSuccess(true)
            } else {
                const data = await res.json()
                setError(data.detail || "Failed to reset password")
            }
        } catch (_) {
            setError("An error occurred. Please try again.")
        } finally {
            setLoading(false)
        }
    }

    if (!token) {
        return (
            <div className="container max-w-md mx-auto py-16 px-4">
                <Card>
                    <CardHeader className="text-center">
                        <XCircle className="h-12 w-12 text-red-500 mx-auto mb-4" />
                        <CardTitle>Invalid Link</CardTitle>
                        <CardDescription>
                            This password reset link is invalid or expired.
                        </CardDescription>
                    </CardHeader>
                    <CardContent className="text-center">
                        <Button asChild>
                            <Link href="/forgot-password">Request New Link</Link>
                        </Button>
                    </CardContent>
                </Card>
            </div>
        )
    }

    if (success) {
        return (
            <div className="container max-w-md mx-auto py-16 px-4">
                <Card>
                    <CardHeader className="text-center">
                        <CheckCircle className="h-12 w-12 text-green-500 mx-auto mb-4" />
                        <CardTitle>Password Reset!</CardTitle>
                        <CardDescription>
                            Your password has been successfully updated.
                        </CardDescription>
                    </CardHeader>
                    <CardContent className="text-center">
                        <Button asChild>
                            <Link href="/login">Continue to Login</Link>
                        </Button>
                    </CardContent>
                </Card>
            </div>
        )
    }

    return (
        <div className="container max-w-md mx-auto py-16 px-4">
            <Card>
                <CardHeader className="text-center">
                    <Lock className="h-12 w-12 text-primary mx-auto mb-4" />
                    <CardTitle>Set New Password</CardTitle>
                    <CardDescription>
                        Enter your new password below.
                    </CardDescription>
                </CardHeader>
                <CardContent>
                    <form onSubmit={handleSubmit} className="space-y-4">
                        <div className="space-y-2">
                            <Label htmlFor="password">New Password</Label>
                            <Input
                                id="password"
                                type="password"
                                placeholder="••••••••"
                                value={password}
                                onChange={(e) => setPassword(e.target.value)}
                                required
                                minLength={8}
                            />
                        </div>

                        <div className="space-y-2">
                            <Label htmlFor="confirmPassword">Confirm Password</Label>
                            <Input
                                id="confirmPassword"
                                type="password"
                                placeholder="••••••••"
                                value={confirmPassword}
                                onChange={(e) => setConfirmPassword(e.target.value)}
                                required
                            />
                        </div>

                        {error && (
                            <p className="text-sm text-red-500">{error}</p>
                        )}

                        <Button type="submit" className="w-full" disabled={loading}>
                            {loading ? "Resetting..." : "Reset Password"}
                        </Button>
                    </form>
                </CardContent>
            </Card>
        </div>
    )
}
