Refactor project structure and update configurations. Now first working version

- Updated `.air.conf` for Nix compatibility and simplified build commands.
- Enhanced `.gitignore` to include `tmp` directory.
- Improved `README.md` with clearer instructions and added language details.
- Refined CSS styles for better UI consistency and added alert styles.
- Upgraded `flake.nix` to use Go 1.24 and improved shell environment setup.
- Modified authentication logic in `auth.go` for better user handling.
- Updated `main.go` to dynamically set the listening port and improved logging.
- Added new `routes.go` file for handling game entry and history.
- Enhanced user models and added statistics tracking in `models.go`.
- Improved template rendering and added user feedback messages in HTML templates.
- Removed obsolete build error logs and binaries.

src/main.go

@@ -4,8 +4,9 @@ import (
 	"log"
 	"os"
 
+	"strconv"
+
 	"github.com/gin-gonic/gin"
-	"gorm.io/driver/postgres"
 	"gorm.io/driver/sqlite"
 	"gorm.io/gorm"
 )
@@ -16,46 +17,44 @@ var (
 	db           *gorm.DB
 	baseURL      string
 	cookieDomain string
+
+	// Global logger for this package
+	lg = log.Default()
 )
 
 const (
-	PORT = "18765"
+	// Default port if APP_PORT is not set
+	defaultPort = 18765
 )
 
-var logger = log.Default()
-
 // ===================== Main =====================
 
 func main() {
 	log.SetFlags(log.LstdFlags | log.Lshortfile)
 
+	// Get the listening port
+	port := os.Getenv("APP_PORT")
+	port = strconv.Itoa(defaultPort)
+
+	// Set the base URL
 	baseURL = os.Getenv("APP_BASE_URL")
 	if baseURL == "" {
-		baseURL = "http://localhost:" + PORT
+		baseURL = "http://localhost:" + port
 	}
-	cookieDomain = os.Getenv("APP_COOKIE_DOMAIN")
 
-	// DB connect
+	// Open connection to SQLite
 	var err error
-	dsn := os.Getenv("DATABASE_URL")
-	if dsn != "" {
-		db, err = gorm.Open(postgres.Open(dsn), &gorm.Config{})
-		if err != nil {
-			log.Fatal("postgres connect:", err)
-		}
-		log.Println("using Postgres")
-	} else {
-		db, err = gorm.Open(sqlite.Open("qrank.db"), &gorm.Config{})
-		if err != nil {
-			log.Fatal("sqlite connect:", err)
-		}
-		log.Println("using SQLite qrank.db")
+	db, err = gorm.Open(sqlite.Open("qrank.db"), &gorm.Config{})
+	if err != nil {
+		lg.Fatal("sqlite connect:", err)
 	}
+	lg.Println("using SQLite qrank.db")
 
 	if err := db.AutoMigrate(&User{}, &Session{}, &LoginToken{}, &Table{}, &Game{}, &GamePlayer{}); err != nil {
-		log.Fatal("migrate:", err)
+		lg.Fatal("migrate:", err)
 	}
 
+	// Create engine
 	r := gin.Default()
 
 	// Serve static files from the current directory
@@ -82,12 +81,10 @@ func main() {
 	r.GET("/me", requireAuth(), getMe)
 	r.POST("/me", requireAuth(), postMe)
 
-	bind := os.Getenv("APP_BIND")
-	if bind == "" {
-		bind = ":" + PORT
-	}
-	log.Println("listening on", bind, "base:", baseURL)
+	// Start application with port
+	bind := ":" + port
+	lg.Println("listening on", bind, "base:", baseURL)
 	if err := r.Run(bind); err != nil {
-		log.Fatal(err)
+		lg.Fatal(err)
 	}
 }