initial commit

app/database.go

@@ -0,0 +1,44 @@
+package app
+
+import (
+	"fmt"
+	"log"
+	"os"
+
+	"github.com/joho/godotenv"
+	_ "github.com/lib/pq"
+	"github.com/vinovest/sqlx"
+)
+
+var db *sqlx.DB = nil
+
+func init() {
+	if err := godotenv.Load(); err != nil {
+		log.Println("Error loading .env file. If you use docker, then you can ignore this.")
+	}
+
+	if db == nil {
+		connectPsql()
+	}
+}
+
+func getDSN() string {
+	user := os.Getenv("PSQL_USER")
+	password := os.Getenv("PSQL_PASS")
+	database := os.Getenv("PSQL_NAME")
+	host, exists := os.LookupEnv("PSQL_HOST")
+	if !exists {
+		host = "localhost"
+	}
+	return fmt.Sprintf("postgresql://%s:%s@%s/%s?sslmode=disable", user, password, host, database)
+}
+func connectPsql() {
+	var err error
+	db, err = sqlx.Connect("postgres", getDSN())
+	if err != nil {
+		panic(err)
+	}
+}
+func ClosePsql() error {
+	return db.Close()
+}