import NextAuth from "next-auth"
import Credentials from "next-auth/providers/credentials"
import { z } from "zod"

export const { handlers, signIn, signOut, auth } = NextAuth({
    session: {
        strategy: "jwt",
        maxAge: 24 * 60 * 60, // 24 hours
    },
    pages: {
        signIn: "/admin/login",
    },
    callbacks: {
        async jwt({ token, user }) {
            if (user) {
                token.id = user.id
                token.role = (user as any).role
                token.tokenVersion = (user as any).tokenVersion
            }
            return token
        },
        async session({ session, token }) {
            if (session.user && token) {
                (session.user as any).id = token.id as string
                (session.user as any).role = token.role as string
                (session.user as any).tokenVersion = token.tokenVersion as number
            }
            return session
        },
    },
    providers: [
        Credentials({
            async authorize(credentials) {
                const parsedCredentials = z
                    .object({ email: z.string().email(), password: z.string().min(6) })
                    .safeParse(credentials)

                if (parsedCredentials.success) {
                    const { email, password } = parsedCredentials.data

                    try {
                        const apiUrl = process.env.NEXT_PUBLIC_API_URL || 'http://localhost:5000/api';
                        const res = await fetch(`${apiUrl}/auth/login`, {
                            method: 'POST',
                            headers: { 'Content-Type': 'application/json' },
                            body: JSON.stringify({ email, password })
                        });

                        const data = await res.json();

                        if (res.ok && data.user) {
                            return data.user;
                        }
                        console.error("Login failed:", data.error);
                    } catch (e) {
                        console.error("Auth error", e);
                    }
                }
                return null
            },
        }),
    ],
})