package database

import (
	"encoding/json"
	"fmt"
	"io"
	"log"
	"os"

	"gorm.io/driver/postgres"
	"gorm.io/gorm"
)

type config struct {
	Host     string `json:"host"`
	User     string `json:"user"`
	Password string `json:"password"`
	Database string `json:"database"`
}

var Database *gorm.DB
var conf *config

func loadConfig() {
	file, err := os.Open("./config.json")
	if err != nil {
		log.Fatalln(err)
	}
	data, err := io.ReadAll(file)
	if err != nil {
		log.Fatalln(err)
	}
	conf = new(config)
	err = json.Unmarshal(data, conf)
	if err != nil {
		log.Fatalln(err)
	}
}

func getDSN() string {
	return fmt.Sprintf("postgresql://%s:%s@%s/%s?sslmode=disable", conf.User, conf.Password, conf.Host, conf.Database)
}

func Connect() {
	var err error
	loadConfig()
	Database, err = gorm.Open(postgres.Open(getDSN()), new(gorm.Config))
	if err != nil {
		log.Fatalln(err)
	}
}