add static override

README.md

@@ -69,6 +69,9 @@ Configuration is done using environment variables.
   - `ram`: Passwords are stored in RAM.
   - `dir`: Passwords are stored in a directory. The directory is specified using `PASSED_STORE_DIR_PATH`, which defaults to `passwords`. PassED will create the directory for you.
 - `PASSED_STORE_CLEAR_INTERVAL`: Time that should pass between clearing expired passwords in seconds, defaults to `30`.
+- `PASSED_STATIC_TYPE`: Directory from which static files are served, defaults to `embed`.
+  - `embed`: Files are served from the files located within the binary. This is recommended.
+  - `dir`: Files are served from a directory. The directory is specified using `PASSED_STATIC_DIR_PATH`, which defaults to `static`. PassED will not create the directory for you.
 
 ## Translators
 - RoryBD

main.go

@@ -3,6 +3,7 @@ package main
 import (
 	"embed"
 	"errors"
+	"io/fs"
 	"log"
 	"net/http"
 	"os"
@@ -22,6 +23,11 @@ func run() error {
 		return err
 	}
 
+	staticFS, err := newStaticFS()
+	if err != nil {
+		return err
+	}
+
 	var address string
 	var logRequests bool
 	var maxPasswordLength int
@@ -32,7 +38,7 @@ func run() error {
 	mux := http.NewServeMux()
 	handler := http.Handler(mux)
 
-	mux.Handle("GET /", routes.ServeFiles(embedFS, "static"))
+	mux.Handle("GET /", http.FileServerFS(staticFS))
 	mux.Handle("POST /api/password", routes.CreatePassword(store, maxPasswordLength))
 	mux.Handle("GET /api/password/{id}", routes.GetPassword(store))
 	mux.Handle("HEAD /api/password/{id}", routes.HasPassword(store))
@@ -50,6 +56,26 @@ func run() error {
 	return nil
 }
 
+func newStaticFS() (sfs fs.FS, err error) {
+	var fsType string
+	env("PASSED_STATIC_TYPE", &fsType, "embed")
+
+	switch fsType {
+	case "embed":
+		sfs, err = fs.Sub(embedFS, "static")
+		return
+	case "dir", "directory":
+		var path string
+		env("PASSED_STATIC_DIR_PATH", &path, "static")
+
+		sfs = os.DirFS(path)
+		return
+	default:
+		err = errors.New("unkown fs type")
+		return
+	}
+}
+
 func newStore() (store storage.Store, err error) {
 	var storeType string
 	var clearInterval int

routes/serve_files.go

@@ -1,15 +0,0 @@
-package routes
-
-import (
-	"io/fs"
-	"net/http"
-)
-
-func ServeFiles(fileSystem fs.FS, pathInFs string) http.Handler {
-	newFs, err := fs.Sub(fileSystem, pathInFs)
-	if err != nil {
-		panic(err)
-	}
-
-	return http.FileServerFS(newFs)
-}