Move HTTP server code to new server.go file

This separates the main control flow and HTTP-related high-level code.

Furthermore the new main.Server type makes the related methods and
function more like the functions from the standard library with a
NewServer() function and methods with only one word as name.

1 files changed, 64 insertions, 0 deletions

diff --git a/server.go b/server.go
new file mode 100644
index 0000000..32d22b1
--- /dev/null
+++ b/server.go
@@ -0,0 +1,64 @@
+package main
+
+import (
+	"context"
+	"embed"
+	"log"
+	"net/http"
+
+	"xengineering.eu/ceres/controller"
+	"xengineering.eu/ceres/view"
+
+	"github.com/gorilla/mux"
+)
+
+type Server struct {
+	backend *http.Server
+}
+
+//go:embed view/static/simple.css/simple.css view/static/ceres.js
+var static embed.FS
+
+func NewServer(addr string) Server {
+	var r *mux.Router = mux.NewRouter()
+
+	r.PathPrefix("/static/").
+		Handler(http.StripPrefix("/static/", http.FileServer(http.FS(static))))
+
+	r.HandleFunc("/version", view.VersionRead(gitDescribe)).Methods(`GET`)
+
+	r.HandleFunc("/recipes", view.RecipesRead).Methods(`GET`)
+
+	r.HandleFunc("/recipe", controller.RecipeCreate).Methods(`POST`)
+	r.HandleFunc("/recipe/{id:[0-9]+}", view.RecipeRead).Methods(`GET`)
+	r.HandleFunc("/recipe/{id:[0-9]+}", controller.RecipeUpdate).Methods(`POST`)
+	r.HandleFunc("/recipe/{id:[0-9]+}", controller.RecipeDelete).Methods(`DELETE`)
+
+	r.HandleFunc("/favicon.ico", view.FaviconRead).Methods(`GET`)
+
+	r.HandleFunc("/", view.IndexRead).Methods(`GET`)
+
+	muxer := http.NewServeMux()
+	muxer.Handle("/", r)
+
+	var srv http.Server
+	srv.Addr = addr
+	srv.Handler = muxer
+
+	log.Printf("Configured server to listen on http://%s\n", srv.Addr)
+
+	return Server{backend: &srv}
+}
+
+func (s Server) Start() {
+	s.backend.ListenAndServe()
+}
+
+func (s Server) Stop() {
+	err := s.backend.Shutdown(context.Background())
+	if err != nil {
+		log.Printf("Failed to shutdown HTTP server: %v\n", err)
+	} else {
+		log.Println("Stopped HTTP server")
+	}
+}