v0.7.0 cli client with readline added, directory structure updated

internal/server/webserver/server.go

@@ -0,0 +1,88 @@
+// FILE: lixenwraith/chess/internal/server/webserver/server.go
+package webserver
+
+import (
+	"embed"
+	"fmt"
+	"io/fs"
+	"strings"
+	"time"
+
+	"github.com/gofiber/fiber/v2"
+	"github.com/gofiber/fiber/v2/middleware/cors"
+	"github.com/gofiber/fiber/v2/middleware/logger"
+)
+
+//go:embed web
+var webFS embed.FS
+
+// Start initializes and starts the web UI server
+func Start(host string, port int, apiURL string) error {
+	app := fiber.New(fiber.Config{
+		ReadTimeout:  10 * time.Second,
+		WriteTimeout: 10 * time.Second,
+		IdleTimeout:  30 * time.Second,
+	})
+
+	// Middleware
+	app.Use(logger.New(logger.Config{
+		Format: "${time} WEB ${status} ${method} ${path} ${latency}\n",
+	}))
+	app.Use(cors.New())
+
+	// Create a sub-filesystem that points to the 'web' directory
+	webContent, err := fs.Sub(webFS, "web")
+	if err != nil {
+		return fmt.Errorf("failed to create web sub-filesystem: %w", err)
+	}
+
+	// API config endpoint, served before the static file handler
+	app.Get("/config", func(c *fiber.Ctx) error {
+		return c.JSON(fiber.Map{
+			"apiUrl": apiURL,
+		})
+	})
+
+	// Serve static files from the embedded 'web' directory
+	app.Get("*", func(c *fiber.Ctx) error {
+		path := c.Path()
+
+		// Default to index.html for the root path
+		if path == "/" {
+			path = "/index.html"
+		}
+
+		// The path for the embedded filesystem must not have a leading slash
+		fsPath := strings.TrimPrefix(path, "/")
+
+		// Try to read the file
+		data, err := fs.ReadFile(webContent, fsPath)
+		if err != nil {
+			// If the file isn't found, serve index.html for SPA-style routing.
+			// This handles client-side routes that don't correspond to a file.
+			data, err = fs.ReadFile(webContent, "index.html")
+			if err != nil {
+				return c.Status(fiber.StatusInternalServerError).SendString("index.html not found")
+			}
+			c.Set("Content-Type", "text/html; charset=utf-8")
+			return c.Send(data)
+		}
+
+		// Set the correct Content-Type based on file extension
+		contentType := "application/octet-stream"
+		switch {
+		case strings.HasSuffix(fsPath, ".html"):
+			contentType = "text/html; charset=utf-8"
+		case strings.HasSuffix(fsPath, ".js"):
+			contentType = "application/javascript; charset=utf-8"
+		case strings.HasSuffix(fsPath, ".css"):
+			contentType = "text/css; charset=utf-8"
+		}
+		c.Set("Content-Type", contentType)
+
+		return c.Send(data)
+	})
+
+	addr := fmt.Sprintf("%s:%d", host, port)
+	return app.Listen(addr)
+}