package db

import (
	"context"
	"database/sql"
	"fmt"
	"log"

	"code.lila.network/adoralaura/go-urlsh/models"
)

// IsCookieValid checks the database if Cookie val is valid.
//
// Returns true if it's valid, false if not.
func IsCookieValid(val string) bool {
	if val == "" {
		return false
	}

	count, err := models.DB.NewSelect().Model((*models.Session)(nil)).Where("cookie = ?", val).Count(context.Background())
	if err != nil {
		log.Printf("Error checking cookie validity for cookie %v\n", val)
		return false
	}
	if count < 1 {
		return false
	} else {
		return true
	}
}

func GetUserFromCookie(cookie string) (models.User, error) {
	var session models.Session
	var user models.User
	err := models.DB.NewSelect().Model(&session).Where("cookie = ?", cookie).Scan(context.Background())
	if err != nil {
		if err == sql.ErrNoRows {
			return models.User{}, fmt.Errorf("[GetUserFromCookie] Session %v not found", cookie)
		} else {
			return models.User{}, fmt.Errorf("[GetUserFromCookie] Error querying session %v from database: %v", cookie, err)
		}
	}
	err = models.DB.NewSelect().Model(&user).Where("username = ?", session.UserName).Scan(context.Background())
	if err != nil {
		return models.User{}, fmt.Errorf("[GetUserFromCookie] Error querying user %v from database: %v", session.UserName, err)
	}
	return user, nil
}

func GetUserFromMFACookie(cookie string) (models.User, error) {
	var transaction models.MFALoginTransaction
	var user models.User
	err := models.DB.NewSelect().Model(&transaction).Where("sessionkey = ?", cookie).Scan(context.Background())
	if err != nil {
		if err == sql.ErrNoRows {
			return models.User{}, fmt.Errorf("[GetUserFromMFACookie] MFA Transaction %v not found", cookie)
		} else {
			return models.User{}, fmt.Errorf("[GetUserFromMFACookie] Error querying MFA Transaction %v from database: %v", cookie, err)
		}
	}
	err = models.DB.NewSelect().Model(&user).Where("username = ?", transaction.UserName).Scan(context.Background())
	if err != nil {
		return models.User{}, fmt.Errorf("[GetUserFromMFACookie] Error querying user %v from database: %v", transaction.UserName, err)
	}
	return user, nil

}