package admin

import (
	"context"
	"errors"

	"github.com/jackc/pgx/v5"
	"github.com/jackc/pgx/v5/pgxpool"
)

type Store struct {
	database *pgxpool.Pool
}

func NewStore(database *pgxpool.Pool) *Store {
	return &Store{
		database,
	}
}

func (store Store) Find(requestAdmin Admin) (Admin, error) {
	adminRows, err := store.database.Query(context.Background(),
		"select * from admin")
	if err != nil {
		return Admin{}, err
	}
	defer adminRows.Close()
	admin, found := createAdmin(requestAdmin, adminRows)

	if found {
		return admin, nil
	}
	return Admin{}, errors.New("invalid username or password")
}

func createAdmin(requestAdmin Admin, adminRows pgx.Rows) (Admin, bool) {
	var databaseAdmin Admin
	for adminRows.Next() {
		err := adminRows.Scan(&databaseAdmin.Username, &databaseAdmin.Password)
		if err != nil {
			return Admin{}, false
		}
		if databaseAdmin.Username == requestAdmin.Username &&
			databaseAdmin.Password == requestAdmin.Password {
			return databaseAdmin, true
		}
	}
	return Admin{}, false
}