initial

cmd/api/healthcheck.go

@@ -0,0 +1,13 @@
+package main
+
+import (
+	"fmt"
+	"net/http"
+)
+
+func (app *application) healthCheckHandler(w http.ResponseWriter, r *http.Request) {
+	fmt.Fprintln(w, "status: available")
+	fmt.Fprintf(w, "environment: %s\n", app.config.env)
+	fmt.Fprintf(w, "version: %s", version)
+
+}

cmd/api/main.go

@@ -0,0 +1,49 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"time"
+)
+
+const version = "1.0.0"
+
+type config struct {
+	port int
+	env  string
+}
+
+type application struct {
+	config config
+	logger *log.Logger
+}
+
+func main() {
+	var cfg config
+
+	flag.IntVar(&cfg.port, "port", 4000, "API Server Port")
+	flag.StringVar(&cfg.env, "env", "development", "Environment (development|staging|production")
+	flag.Parse()
+
+	logger := log.New(os.Stdout, "", log.Ldate|log.Ltime)
+
+	app := &application{
+		config: cfg,
+		logger: logger,
+	}
+
+	srv := &http.Server{
+		Addr:         fmt.Sprintf(":%d", cfg.port),
+		Handler:      app.routes(),
+		IdleTimeout:  time.Minute,
+		ReadTimeout:  5 * time.Second,
+		WriteTimeout: 10 * time.Second,
+	}
+
+	logger.Printf("starting %s server on %s", cfg.env, srv.Addr)
+	err := srv.ListenAndServe()
+	logger.Fatal(err)
+}

cmd/api/movies.go

@@ -0,0 +1,25 @@
+package main
+
+import (
+	"fmt"
+	"net/http"
+	"strconv"
+
+	"github.com/julienschmidt/httprouter"
+)
+
+func (app *application) createMovieHandler(w http.ResponseWriter, r *http.Request) {
+	fmt.Fprintln(w, "create a new movie")
+}
+
+func (app *application) showMovieHandler(w http.ResponseWriter, r *http.Request) {
+	params := httprouter.ParamsFromContext(r.Context())
+
+	id, err := strconv.ParseInt(params.ByName("id"), 10, 64)
+	if err != nil {
+		http.NotFound(w, r)
+		return
+	}
+
+	fmt.Fprintf(w, "show the details of movie %d\n", id)
+}

cmd/api/routes.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+	"net/http"
+
+	"github.com/julienschmidt/httprouter"
+)
+
+func (app *application) routes() *httprouter.Router {
+	router := httprouter.New()
+
+	router.HandlerFunc(http.MethodGet, "/v1/healthcheck", app.healthCheckHandler)
+	router.HandlerFunc(http.MethodPost, "/v1/movies", app.createMovieHandler)
+	router.HandlerFunc(http.MethodGet, "/v1/movies/:id", app.showMovieHandler)
+
+	return router
+}

go.mod

@@ -0,0 +1,5 @@
+module greenlight.ergz
+
+go 1.20
+
+require github.com/julienschmidt/httprouter v1.3.0 // indirect

go.sum

@@ -0,0 +1,2 @@
+github.com/julienschmidt/httprouter v1.3.0 h1:U0609e9tgbseu3rBINet9P48AI/D3oJs4dN7jwJOQ1U=
+github.com/julienschmidt/httprouter v1.3.0/go.mod h1:JR6WtHb+2LUe8TCKY3cZOxFyyO8IZAc4RVcycCCAKdM=