first commit

service/static.go

@@ -0,0 +1,51 @@
+package service
+
+import (
+	"embed"
+	"io/fs"
+	"net/http"
+	"strings"
+
+	"github.com/gin-contrib/static"
+	"github.com/gin-gonic/gin"
+)
+
+type embedFileSystem struct {
+	http.FileSystem
+}
+
+func (e embedFileSystem) Exists(prefix string, path string) bool {
+	_, err := e.Open(path)
+	return err == nil
+}
+func EmbedFolder(fsEmbed embed.FS, targetPath string) static.ServeFileSystem {
+	fsys, err := fs.Sub(fsEmbed, targetPath)
+	if err != nil {
+		panic(err)
+	}
+	return embedFileSystem{
+		FileSystem: http.FS(fsys),
+	}
+}
+
+func HandleStaticFile(router *gin.Engine, f embed.FS) {
+	root := EmbedFolder(f, "out")
+	router.Use(static.Serve("/", root))
+	staticServer := static.Serve("/", root)
+	router.NoRoute(func(c *gin.Context) {
+		if c.Request.Method == http.MethodGet &&
+			!strings.ContainsRune(c.Request.URL.Path, '.') &&
+			!strings.HasPrefix(c.Request.URL.Path, "/v1/") {
+			if strings.HasSuffix(c.Request.URL.Path, "/") {
+				c.Request.URL.Path += "index.html"
+				staticServer(c)
+				return
+			}
+			if !strings.HasSuffix(c.Request.URL.Path, ".html") {
+				c.Request.URL.Path += ".html"
+				staticServer(c)
+				return
+			}
+		}
+	})
+}