refactor!: Déplacer fichiers statiques vers embed

Bump golang -> `1.21.4`

Bump alpine -> `3.18.4`

Exposer fichiers html sur `/*`

Exposer fichiers css sur `/public/css/*`

Exposer fichiers js sur `/public/js/*`

Retirer prefix cgo de build step

Ajouter `public/` à build step

Retirer `public/static/` de `static/` dans run step

Retirer mentions à static_dir dans `cmd/server.go`

Retirer flag `server.static_dir`, `--static_dir` de serverCmd

Retirer paramètre `static_dir` de `runServer`

Remplacer middleware `RemoveTrailingSlash` -> `AddTrailingSlash`

Ajouter `echo.Group`s pour exposition statique avec config

Refactor déclaration de routes api derrière groupe `/api`

Fix références de fichiers js et css dans `index.html` et `slider.js`

BREAKING: static_dir n'est plus utilisé, les fichiers sont maintenant embedded

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.20.2 as build
+FROM golang:1.21.4 as build
 
 LABEL author="Victor Lacasse-Beaudoin <vlbeaudoin@agecem.org>"
 LABEL license="MIT"
@@ -15,11 +15,13 @@ ADD data/ data/
 
 ADD handlers/ handlers/
 
-RUN CGO_ENABLED=0 go build -a -installsuffix cgo -o babillard .
+ADD public/ public/
+
+RUN CGO_ENABLED=0 go build -a -o babillard .
 
 # Alpine
 
-FROM alpine:3.17.2
+FROM alpine:3.18.4
 
 RUN apk update && apk upgrade --no-cache
 
@@ -27,8 +29,6 @@ WORKDIR /app
 
 ADD contenu/ contenu/
 
-ADD public/static/ static/
-
 COPY --from=build /go/src/app/babillard /usr/bin/babillard
 
 CMD ["babillard", "server"]

cmd/server.go

@@ -3,8 +3,10 @@ package cmd
 import (
 	"fmt"
 	"log"
+	"net/http"
 
 	"git.agecem.com/agecem/babillard/handlers"
+	"git.agecem.com/agecem/babillard/public"
 	"github.com/labstack/echo/v4"
 	"github.com/labstack/echo/v4/middleware"
 	"github.com/spf13/cobra"
@@ -17,9 +19,9 @@ var serverCmd = &cobra.Command{
 	Short: "Démarrer le serveur web",
 	Run: func(cmd *cobra.Command, args []string) {
 		port := viper.GetInt("server.port")
-		static_dir := viper.GetString("server.static_dir")
+		//static_dir := viper.GetString("server.static_dir")
 
-		runServer(port, static_dir)
+		runServer(port)
 	},
 }
 
@@ -34,25 +36,33 @@ func declareFlags() {
 
 	serverCmd.Flags().String("contenu_dir", "contenu", "Répertoire du contenu à exposer (config: \"server.contenu_dir\")")
 	viper.BindPFlag("server.contenu_dir", serverCmd.Flags().Lookup("contenu_dir"))
-
-	serverCmd.Flags().String("static_dir", "static", "Répertoire des fichiers statiques à exposer (config: \"server.static_dir\")")
-	viper.BindPFlag("server.static_dir", serverCmd.Flags().Lookup("static_dir"))
 }
 
-func runServer(port int, static_dir string) {
+func runServer(port int) {
 	log.Print("[I] Starting webserver")
 
 	e := echo.New()
 
-	g := e.Group("")
+	e.Pre(middleware.AddTrailingSlash())
 
-	e.Pre(middleware.RemoveTrailingSlash())
+	e.Group("").Use(middleware.StaticWithConfig(middleware.StaticConfig{
+		Root:       "/html/",
+		Filesystem: http.FS(public.HTMLFS()),
+	}))
+	e.Group("/public/css").Use(middleware.StaticWithConfig(middleware.StaticConfig{
+		Root:       "/css/",
+		Filesystem: http.FS(public.CSSFS()),
+	}))
+	e.Group("/public/js").Use(middleware.StaticWithConfig(middleware.StaticConfig{
+		Root:       "/js/",
+		Filesystem: http.FS(public.JSFS()),
+	}))
 
-	g.Static("/", static_dir)
+	groupAPI := e.Group("/api")
 
-	g.GET("/api", handlers.HandleAPIShow)
-	g.GET("/api/contenu", handlers.HandleAPIContenuList)
-	g.GET("/api/contenu/:filename", handlers.HandleAPIContenuFile)
+	groupAPI.GET("/", handlers.HandleAPIShow)
+	groupAPI.GET("/contenu/", handlers.HandleAPIContenuList)
+	groupAPI.GET("/contenu/:filename/", handlers.HandleAPIContenuFile)
 
 	e.Logger.Fatal(e.Start(fmt.Sprintf(":%d", port)))
 }

public/embed.go

@@ -2,9 +2,17 @@ package public
 
 import "embed"
 
-//go:embed static/*
-var embedFS embed.FS
+//go:embed html/*
+var htmlFS embed.FS
 
-func GetEmbedFS() embed.FS {
-	return embedFS
-}
+func HTMLFS() embed.FS { return htmlFS }
+
+//go:embed css/*
+var cssFS embed.FS
+
+func CSSFS() embed.FS { return cssFS }
+
+//go:embed js/*
+var jsFS embed.FS
+
+func JSFS() embed.FS { return jsFS }

public/html/index.html

@@ -5,13 +5,13 @@
 
     <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
 
-    <script src="slider.js"></script>
+    <script src="/public/js/slider.js"></script>
 
     <!-- BROKEN, brise slider.js quand inclu
     <script src="text.js"></script>
     !-->
 
-    <link rel="stylesheet" href="style.css">
+    <link rel="stylesheet" href="/public/css/style.css">
   </head>
 
   <body>

public/js/slider.js

@@ -6,7 +6,7 @@ function afficherIndex() {
 }
 
 function afficherImage() {
-  $('#image').attr('src', "api/contenu/"+images[indexImages]);
+  $('#image').attr('src', "/api/contenu/"+images[indexImages]);
 }
 
 function augmenterIndex() {