feat: major refactor to follow good standards

Author: felipefrizzo

cmd/main.go

@@ -0,0 +1,59 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"log/slog"
+	"net/http"
+	"os"
+	"os/signal"
+	"sync"
+	"syscall"
+	"time"
+
+	"github.com/felipefrizzo/brazilian-zipcode-api/internal/config"
+	"github.com/felipefrizzo/brazilian-zipcode-api/internal/server"
+)
+
+func main() {
+	logger := slog.New(slog.NewTextHandler(os.Stdout, nil))
+	logger.Info("starting server")
+
+	cfg, err := config.New()
+	if err != nil {
+		logger.Error("failed to create config", slog.String("error", err.Error()))
+		os.Exit(1)
+	}
+
+	srvr, err := server.New(logger, cfg)
+	if err != nil {
+		logger.Error("failed to create server", slog.String("error", err.Error()))
+		os.Exit(1)
+	}
+
+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer stop()
+
+	var wg sync.WaitGroup
+	wg.Add(1)
+
+	go func() {
+		defer wg.Done()
+		logger.Info(fmt.Sprintf("server is running on port %s", cfg.ServerPort))
+		if err := srvr.Server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			logger.Error("server error", slog.String("error", err.Error()))
+		}
+	}()
+
+	<-ctx.Done()
+
+	logger.Info("shutting down server")
+	shutdownCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	if err := srvr.Server.Shutdown(shutdownCtx); err != nil {
+		logger.Error("server shutdown error", slog.String("error", err.Error()))
+	}
+
+	wg.Wait()
+}

cmd/server.go

@@ -1,31 +1,32 @@
 module github.com/felipefrizzo/brazilian-zipcode-api
 
-go 1.17
+go 1.24
 
 require (
-	github.com/caarlos0/env/v6 v6.8.0
-	github.com/gorilla/handlers v1.5.1
-	github.com/gorilla/mux v1.8.0
-	github.com/stretchr/testify v1.6.1
-	go.mongodb.org/mongo-driver v1.8.1
+	github.com/julienschmidt/httprouter v1.3.0
+	github.com/mitchellh/mapstructure v1.5.0
+	github.com/redis/go-redis/v9 v9.8.0
+	github.com/richardwilkes/toolbox v1.122.1
+	github.com/spf13/viper v1.20.1
 )
 
 require (
-	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/felixge/httpsnoop v1.0.1 // indirect
-	github.com/go-stack/stack v1.8.0 // indirect
-	github.com/golang/snappy v0.0.1 // indirect
-	github.com/klauspost/compress v1.13.6 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
+	github.com/fsnotify/fsnotify v1.8.0 // indirect
+	github.com/go-viper/mapstructure/v2 v2.2.1 // indirect
 	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
-	github.com/pkg/errors v0.9.1 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
-	github.com/xdg-go/scram v1.0.2 // indirect
-	github.com/xdg-go/stringprep v1.0.2 // indirect
-	github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d // indirect
-	golang.org/x/crypto v0.31.0 // indirect
-	golang.org/x/sync v0.10.0 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.3 // indirect
+	github.com/sagikazarmark/locafero v0.7.0 // indirect
+	github.com/sourcegraph/conc v0.3.0 // indirect
+	github.com/spf13/afero v1.12.0 // indirect
+	github.com/spf13/cast v1.7.1 // indirect
+	github.com/spf13/pflag v1.0.6 // indirect
+	github.com/subosito/gotenv v1.6.0 // indirect
+	go.uber.org/atomic v1.9.0 // indirect
+	go.uber.org/multierr v1.9.0 // indirect
+	golang.org/x/sys v0.29.0 // indirect
 	golang.org/x/text v0.21.0 // indirect
 	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect
-	gopkg.in/yaml.v3 v3.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )