package model

import (
	_ "github.com/jinzhu/gorm/dialects/mysql"
	"github.com/jinzhu/gorm"
	"os"
	"fmt"
	"github.com/joho/godotenv"
)

var db *gorm.DB

func init() {
	error := godotenv.Load()
	if error != nil {
		fmt.Println(error)
	}

	username := os.Getenv("db_name")
	password := os.Getenv("db_pass")

	connectionstring := fmt.Sprintf("%s:%s@tcp(127.0.0.1:3306)/expirydates?charset=utf8&parseTime=True&loc=Local", username, password)

	conn, err := gorm.Open("mysql", connectionstring)
	if err != nil {
		fmt.Println(err)
	}
	db = conn
	db.AutoMigrate(&Company{}, &Product{}, &ProductExpiryPosition{}, &Report{}, &ReportPosition{}, &Account{})
	db.Model(&Product{}).AddForeignKey("company_id", "companies(id)", "RESTRICT", "RESTRICT")
	db.Model(&ProductExpiryPosition{}).AddForeignKey("product_id", "products(id)", "RESTRICT", "RESTRICT")
	db.Model(&Report{}).AddForeignKey("company_id", "companies(id)", "RESTRICT", "RESTRICT")
	db.Model(&ReportPosition{}).AddForeignKey("report_id", "reports(id)", "RESTRICT", "RESTRICT")
	db.Model(&ReportPosition{}).AddForeignKey("product_expiry_position_id", "product_expiry_positions(id)", "RESTRICT", "RESTRICT")

	db.LogMode(true)
	db = db.Set("gorm:auto_preload", true)
}

func GetDB() *gorm.DB {
	return db
}