package db

import (
	"log"
	"os"

	"gorm.io/driver/sqlite"
	"gorm.io/gorm"

	"git.artlef.fr/PersonalLibraryManager/internal/model"
)

func Initdb(databasePath string, demoDataPath string) *gorm.DB {
	db, err := gorm.Open(
		sqlite.Open(
			databasePath), &gorm.Config{})
	if err != nil {
		log.Fatal(err)
	}
	// Migrate the schema
	db.AutoMigrate(&model.Book{})
	db.AutoMigrate(&model.User{})
	db.AutoMigrate(&model.UserBook{})
	var book model.Book
	queryResult := db.Limit(1).Find(&book)
	if queryResult.RowsAffected == 0 && demoDataPath != "" {
		migrateSchema(db, demoDataPath)
	}
	return db
}

func migrateSchema(db *gorm.DB, demoDataPath string) {
	log.Printf("Loading demo data file %s\n", demoDataPath)
	data, err := os.ReadFile(demoDataPath)
	if err != nil {
		log.Fatal(err)
	}
	db.Exec(string(data))
}