helseveileder/backend/cmd/db/db.go

package db

import (
	"database/sql"
	"fmt"
	"log"
	"os"
	"strconv"

	"github.com/joho/godotenv"
	_ "github.com/lib/pq"
)

func init() {
	if err := godotenv.Load(".env"); err != nil {
		log.Fatalf("Error loading .env file: %v", err)
	}
}

var (
	host     = os.Getenv("DB_HOST")
	portStr  = os.Getenv("DB_PORT")
	user     = os.Getenv("DB_USER")
	password = os.Getenv("DB_PASSWORD")
	dbname   = os.Getenv("DB_NAME")
)

var port, _ = strconv.Atoi(portStr)

func SetupDb() {
	// Connection string
	psqlInfo := fmt.Sprintf("host=%s port=%d user=%s "+
		"password=%s dbname=%s sslmode=disable",
		host, port, user, password, dbname)

	// Connect to the database
	db, err := sql.Open("postgres", psqlInfo)
	if err != nil {
		log.Fatalf("Error opening database: %v\n", err)
	}
	defer db.Close()

	// Check the connection
	err = db.Ping()
	if err != nil {
		log.Fatalf("Error connecting to the database: %v\n", err)
	}
}