[PHASE-6] Implement executable server

cmd/server/main.go

@@ -0,0 +1,73 @@
+package main
+
+import (
+	"context"
+	"log/slog"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"hash-of-wisdom/internal/lib/sl"
+	"hash-of-wisdom/internal/pow/challenge"
+	"hash-of-wisdom/internal/quotes"
+	"hash-of-wisdom/internal/server"
+	"hash-of-wisdom/internal/service"
+)
+
+func main() {
+	addr := ":8080"
+	if len(os.Args) > 1 {
+		addr = os.Args[1]
+	}
+
+	logger := slog.Default()
+	logger.Info("starting word of wisdom server", "address", addr)
+
+	// Create components
+	challengeConfig, err := challenge.NewConfig()
+	if err != nil {
+		logger.Error("failed to create config", sl.Err(err))
+		os.Exit(1)
+	}
+	generator := challenge.NewGenerator(challengeConfig)
+	verifier := challenge.NewVerifier(challengeConfig)
+	quoteService := quotes.NewHTTPService()
+
+	// Wire up service
+	genAdapter := service.NewGeneratorAdapter(generator)
+	wisdomService := service.NewWisdomService(genAdapter, verifier, quoteService)
+
+	// Create server configuration
+	serverConfig := server.DefaultConfig()
+	serverConfig.Address = addr
+
+	// Create server
+	srv := server.NewTCPServer(wisdomService,
+		server.WithConfig(serverConfig),
+		server.WithLogger(logger))
+
+	// Start server
+	ctx := context.Background()
+	if err := srv.Start(ctx); err != nil {
+		logger.Error("failed to start server", sl.Err(err))
+		os.Exit(1)
+	}
+
+	// Wait for interrupt
+	sigChan := make(chan os.Signal, 1)
+	signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)
+
+	logger.Info("server ready - press ctrl+c to stop")
+	<-sigChan
+
+	// Graceful shutdown
+	logger.Info("shutting down server")
+	if err := srv.Stop(); err != nil {
+		logger.Error("error during shutdown", sl.Err(err))
+	}
+
+	// Give connections time to close
+	time.Sleep(100 * time.Millisecond)
+	logger.Info("server stopped")
+}