129 lines
3.4 KiB
Go
129 lines
3.4 KiB
Go
package main
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import (
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"context"
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"database/sql"
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"embed"
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"flag"
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"io/fs"
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"log"
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"net/http"
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"os"
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"os/signal"
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"strconv"
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"time"
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"github.com/gorilla/csrf"
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hds "github.com/gorilla/handlers"
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"github.com/gorilla/mux"
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"github.com/gorilla/securecookie"
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"github.com/joho/godotenv"
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"github.com/zhang2092/go-url-shortener/internal/db"
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"github.com/zhang2092/go-url-shortener/internal/handler"
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"github.com/zhang2092/go-url-shortener/internal/middleware"
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"github.com/zhang2092/go-url-shortener/internal/pkg/logger"
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"github.com/zhang2092/go-url-shortener/internal/service"
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)
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//go:embed assets
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var assetsFS embed.FS
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func main() {
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var local bool
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flag.BoolVar(&local, "debug", true, "server running in debug?")
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flag.Parse()
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if local {
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if err := godotenv.Load(); err != nil {
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log.Fatalf("failed to load env: %v", err)
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}
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}
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logger.NewLogger()
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// Set up assets
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assets, err := fs.Sub(assetsFS, "assets")
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if err != nil {
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log.Fatal(err)
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}
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addr := os.Getenv("REDIS_ADDR")
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password := os.Getenv("REDIS_PASSWORD")
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redisDb, err := strconv.Atoi(os.Getenv("REDIS_DB"))
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if err != nil {
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log.Fatalf("failed to get redis db index: %v", err)
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}
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service.InitializeStore(addr, password, redisDb)
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conn, err := sql.Open(os.Getenv("DB_DRIVER"), os.Getenv("DB_SOURCE"))
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if err != nil {
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log.Fatal("cannot connect to db: ", err)
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}
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store := db.NewStore(conn)
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hashKey := securecookie.GenerateRandomKey(32)
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blockKey := securecookie.GenerateRandomKey(32)
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middleware.SetSecureCookie(securecookie.New(hashKey, blockKey))
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router := mux.NewRouter()
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router.Use(mux.CORSMethodMiddleware(router))
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router.PathPrefix("/assets/").Handler(http.StripPrefix("/assets/", http.FileServer(http.FS(assets))))
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csrfMiddleware := csrf.Protect(
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[]byte(securecookie.GenerateRandomKey(32)),
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csrf.Secure(false),
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csrf.HttpOnly(true),
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csrf.FieldName("csrf_token"),
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csrf.CookieName("authorize_csrf"),
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)
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router.Use(csrfMiddleware)
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router.Use(middleware.SetUser)
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router.Handle("/register", hds.MethodHandler{
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http.MethodGet: http.HandlerFunc(handler.RegisterView),
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http.MethodPost: http.Handler(handler.Register(store)),
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})
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router.Handle("/login", hds.MethodHandler{
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http.MethodGet: http.HandlerFunc(handler.LoginView),
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http.MethodPost: http.Handler(handler.Login(store)),
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})
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router.Handle("/logout", handler.Logout()).Methods(http.MethodGet)
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subRouter := router.PathPrefix("/").Subrouter()
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subRouter.Use(middleware.MyAuthorize)
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subRouter.Handle("/", handler.HomeView(store)).Methods(http.MethodGet)
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subRouter.Handle("/create-short-url", hds.MethodHandler{
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http.MethodGet: http.HandlerFunc(handler.CreateShortUrlView),
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http.MethodPost: http.Handler(handler.CreateShortUrl(store)),
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})
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subRouter.Handle("/delete-short-url/{shortUrl}", handler.DeleteShortUrl(store)).Methods(http.MethodPost)
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router.HandleFunc("/{shortUrl}", handler.HandleShortUrlRedirect).Methods(http.MethodGet)
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srv := &http.Server{
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Addr: "0.0.0.0:" + os.Getenv("SERVER_PORT"),
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Handler: router,
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WriteTimeout: 15 * time.Second,
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ReadTimeout: 15 * time.Second,
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}
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go func() {
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if err := srv.ListenAndServe(); err != nil {
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log.Printf("failed to start server on :"+os.Getenv("SERVER_PORT")+", err: %v", err)
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}
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}()
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c := make(chan os.Signal, 1)
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signal.Notify(c, os.Interrupt)
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<-c
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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service.CloseStoreRedisConn()
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conn.Close()
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srv.Shutdown(ctx)
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log.Println("shutting down")
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os.Exit(0)
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}
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