import NextAuth from "next-auth"
import CredentialsProvider from "next-auth/providers/credentials"
import { type User } from "@/lib/types"

const handler = NextAuth({
    providers: [
        CredentialsProvider({
            name: "Credentials",
            credentials: {
                email: { label: "Email", type: "email" },
                password: { label: "Password", type: "password" }
            },
            async authorize(credentials) {
                if (!credentials?.email || !credentials?.password) return null

                try {
                    const res = await fetch(`${process.env.API_URL}/api/auth/login`, {
                        method: "POST",
                        headers: { "Content-Type": "application/json" },
                        body: JSON.stringify({
                            email: credentials.email,
                            password: credentials.password
                        })
                    })

                    if (res.ok) {
                        const user = await res.json()
                        // Attach basic auth token to user object temporarily to pass to jwt callback
                        user.authHeader = "Basic " + btoa(`${credentials.email}:${credentials.password}`)
                        return user
                    }
                    return null
                } catch (e) {
                    console.error(e)
                    return null
                }
            }
        })
    ],
    callbacks: {
        async jwt({ token, user }) {
            if (user) {
                token.user = user
                // @ts-ignore
                token.authHeader = user.authHeader
            }
            return token
        },
        async session({ session, token }) {
            if (token.user) {
                // @ts-ignore
                session.user = token.user as User
                // @ts-ignore
                session.authHeader = token.authHeader as string
            }
            return session
        }
    },
    pages: {
        signIn: "/auth",
        error: "/auth" // Redirect to custom auth page on error
    }
})

export { handler as GET, handler as POST }