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path: root/src/app/login/page.tsx
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"use client"

import { useState } from "react"
import { signIn } from "next-auth/react"
import { useRouter } from "next/navigation"
import { zodResolver } from "@hookform/resolvers/zod"
import { useForm } from "react-hook-form"
import { Eye, EyeOff, Loader2 } from "lucide-react"
import Link from "next/link"

import { Button } from "@/components/ui/button"
import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card"
import { Form, FormControl, FormField, FormItem, FormLabel, FormMessage } from "@/components/ui/form"
import { Input } from "@/components/ui/input"
import { Alert, AlertDescription } from "@/components/ui/alert"

import { loginSchema, type LoginInput } from "@/lib/validation"

export default function SignInPage() {
  const [showPassword, setShowPassword] = useState(false)
  const [isLoading, setIsLoading] = useState(false)
  const [error, setError] = useState("")
  const router = useRouter()

  const form = useForm<LoginInput>({
    resolver: zodResolver(loginSchema),
    defaultValues: {
      email: "",
      password: "",
    },
  })

  const onSubmit = async (data: LoginInput) => {
    setIsLoading(true)
    setError("")
    
    try {
      const result = await signIn("credentials", {
        email: data.email,
        password: data.password,
        redirect: false,
      })

      if (result?.error) {
        setError("Invalid email or password")
      } else {
        router.push("/")
        router.refresh()
      }
    } catch {
      setError("An unexpected error occurred")
    } finally {
      setIsLoading(false)
    }
  }

  return (
    <div className="min-h-screen flex items-center justify-center bg-gradient-to-br from-background to-muted/20 p-4">
      <Card className="w-full max-w-md">
        <CardHeader className="space-y-1">
          <CardTitle className="text-2xl text-center">Sign In</CardTitle>
          <CardDescription className="text-center">
            Enter your email and password to access your account
          </CardDescription>
        </CardHeader>
        <CardContent className="space-y-4">
          {error && (
            <Alert variant="destructive">
              <AlertDescription>{error}</AlertDescription>
            </Alert>
          )}

          <Form {...form}>
            <form onSubmit={form.handleSubmit(onSubmit)} className="space-y-4">
              <FormField
                control={form.control}
                name="email"
                render={({ field }) => (
                  <FormItem>
                    <FormLabel>Email</FormLabel>
                    <FormControl>
                      <Input
                        type="email"
                        placeholder="john@example.com"
                        autoComplete="email"
                        {...field}
                      />
                    </FormControl>
                    <FormMessage />
                  </FormItem>
                )}
              />
              <FormField
                control={form.control}
                name="password"
                render={({ field }) => (
                  <FormItem>
                    <FormLabel>Password</FormLabel>
                    <FormControl>
                      <div className="relative">
                        <Input
                          type={showPassword ? "text" : "password"}
                          placeholder="Enter your password"
                          autoComplete="current-password"
                          {...field}
                        />
                        <Button
                          type="button"
                          variant="ghost"
                          size="sm"
                          className="absolute right-0 top-0 h-full px-3 py-2 hover:bg-transparent"
                          onClick={() => setShowPassword(!showPassword)}
                        >
                          {showPassword ? (
                            <EyeOff className="h-4 w-4" />
                          ) : (
                            <Eye className="h-4 w-4" />
                          )}
                        </Button>
                      </div>
                    </FormControl>
                    <FormMessage />
                  </FormItem>
                )}
              />
              <Button type="submit" className="w-full" disabled={isLoading}>
                {isLoading && <Loader2 className="mr-2 h-4 w-4 animate-spin" />}
                Sign In
              </Button>
            </form>
          </Form>

          <div className="text-center text-sm">
            <span className="text-muted-foreground">Don&apos;t have an account? </span>
            <Link href="/signup" className="text-primary hover:underline font-medium">
              Sign up
            </Link>
          </div>

          <div className="text-center">
            <Button variant="link" className="text-sm text-muted-foreground">
              Forgot your password?
            </Button>
          </div>
        </CardContent>
      </Card>
    </div>
  )
}