import { defineStore } from 'pinia'
import { ref, computed } from 'vue'
import { supabase } from '@/supabase'

export const useAuthStore = defineStore('auth', () => {
    const userSession = ref<any>(null)
    const userProfile = ref<any>(null)

    const isAuthenticated = computed(() => !!userSession.value)

    // We check the custom Postgres role we put in our `users` table
    const role = computed(() => userProfile.value?.role || userSession.value?.user?.user_metadata?.role)
    const userName = computed(() => userProfile.value?.full_name || userSession.value?.user?.user_metadata?.full_name)

    const isAdmin = computed(() => role.value?.toUpperCase() === 'ADMIN')
    const isDriver = computed(() => role.value?.toUpperCase() === 'DRIVER')
    const isPromoter = computed(() => role.value?.toUpperCase() === 'PROMOTER')
    const isPassenger = computed(() => !role.value || role.value?.toUpperCase() === 'PASSENGER')

    /** Listens for Supabase Auth state changes */
    supabase.auth.onAuthStateChange(async (_event, session) => {
        userSession.value = session

        if (session?.user) {
            // Immediately fetch their role from standard Public table if present
            const { data } = await supabase
                .from('users')
                .select('*')
                .eq('id', session.user.id)
                .single()

            if (data) userProfile.value = data
        } else {
            userProfile.value = null
        }
    })

    async function login(email: string, pass: string) {
        // Use standard Supabase signIn
        const { error } = await supabase.auth.signInWithPassword({ email, password: pass })
        if (error) throw new Error(error.message)
    }

    async function logout() {
        await supabase.auth.signOut()
        userSession.value = null
        userProfile.value = null
        window.location.href = '/'
    }

    return {
        userSession,
        userProfile,
        role,
        userName,
        isAuthenticated,
        isAdmin,
        isDriver,
        isPromoter,
        isPassenger,
        login,
        logout
    }
})