feat: Option to serve Bootstrap from the filesystem

Signed-off-by: Julien Riou <julien@riou.xyz>

.gitignore

@@ -3,3 +3,4 @@ releases
 collerd.db
 !docker/collerd.json
 collerd.json
+node_modules

Makefile

@@ -55,6 +55,9 @@ releases: build_linux_amd64 build_darwin_arm64 archive_linux_amd64 archive_darwi
 releases_with_docker:
 	docker run -it -v $(shell pwd):/mnt -w /mnt -e "UID=$(shell id -u)" -e "GID=$(shell id -g)" ${DOCKER_IMAGE} ./docker/build.sh
 
+dependencies:
+	npm install
+
 test:
 	cd src \
     && go test internal/*.go \

package-lock.json

@@ -0,0 +1,40 @@
+{
+  "name": "coller",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "dependencies": {
+        "bootstrap": "^5.3.8"
+      }
+    },
+    "node_modules/@popperjs/core": {
+      "version": "2.11.8",
+      "resolved": "https://registry.npmjs.org/@popperjs/core/-/core-2.11.8.tgz",
+      "integrity": "sha512-P1st0aksCrn9sGZhp8GMYwBnQsbvAWsZAX44oXNNvLHGqAOcoVxmjZiohstwQ7SqKnbR47akdNi+uleWD8+g6A==",
+      "peer": true,
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/popperjs"
+      }
+    },
+    "node_modules/bootstrap": {
+      "version": "5.3.8",
+      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-5.3.8.tgz",
+      "integrity": "sha512-HP1SZDqaLDPwsNiqRqi5NcP0SSXciX2s9E+RyqJIIqGo+vJeN5AJVM98CXmW/Wux0nQ5L7jeWUdplCEf0Ee+tg==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/twbs"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/bootstrap"
+        }
+      ],
+      "peerDependencies": {
+        "@popperjs/core": "^2.11.8"
+      }
+    }
+  }
+}

package.json

@@ -0,0 +1,5 @@
+{
+  "dependencies": {
+    "bootstrap": "^5.3.8"
+  }
+}

src/cmd/collerd/README.md

@@ -36,6 +36,7 @@ The file format is **JSON**:
 * **enable_upload_file_button** (bool): Display the upload file button in the UI (default true)
 * **tls_cert_file** (string): Path to TLS certificate file to enable HTTPS
 * **tls_key_file** (string): Path to TLS key file to enable HTTPS
+* **bootstrap_directory** (string): Serve [Bootstrap](https://getbootstrap.com/) assets from this local directory (ex: "./node_modules/bootstrap/dist"). See **Dependencies** for details.
 
 The configuration file is not required but the service might not be exposed to the public.
 
@@ -79,3 +80,34 @@ If the note is encrypted, the encrypted value is returned (application/octet-str
 Errors return **500 Server Internal Error** with the **JSON** payload:
 * **message** (string): context of the error
 * **error** (string): error message
+
+## Dependencies
+
+The web interface depends on:
+
+- [Bootstrap](https://getbootstrap.com/)
+- [Monaco Editor](https://github.com/microsoft/monaco-editor/)
+
+By default, those dependencies are fetched from **remote CDN** services by the client.
+
+If you would like to download them to serve them locally:
+
+```
+npm install
+```
+
+or via `make`:
+
+```
+make dependencies
+```
+
+Then configure the local directories:
+
+```json
+{
+  "bootstrap_directory": "./node_modules/bootstrap/dist"
+}
+```
+
+Downloading Monaco Editor is not supported yet.

src/server/config.go

@@ -28,6 +28,7 @@ type Config struct {
 	EnableUploadFileButton bool     `json:"enable_upload_file_button"`
 	TLSCertFile            string   `json:"tls_cert_file"`
 	TLSKeyFile             string   `json:"tls_key_file"`
+	BootstrapDirectory     string   `json:"bootstrap_directory"`
 }
 
 func NewConfig() *Config {

src/server/server.go

@@ -196,6 +196,7 @@ type PageData struct {
 	URL                    string
 	Note                   *Note
 	EnableUploadFileButton bool
+	BootstrapDirectory     string
 }
 
 type HomeHandler struct {
@@ -434,6 +435,7 @@ func (s *Server) Start() error {
 		Expirations:        s.config.Expirations,
 		Expiration:         s.config.Expiration,
 		Languages:          s.config.Languages,
+		BootstrapDirectory: s.config.BootstrapDirectory,
 	}
 
 	if s.config.ShowVersion {
@@ -470,6 +472,10 @@ func (s *Server) Start() error {
 	}
 	r.Path("/{id:[a-zA-Z0-9]+}.html").Handler(webNoteHandler).Methods("GET")
 
+	if s.config.BootstrapDirectory != "" {
+		r.PathPrefix("/static/bootstrap/").Handler(http.StripPrefix("/static/bootstrap/", http.FileServer(http.Dir(s.config.BootstrapDirectory))))
+	}
+
 	r.Path("/").Handler(&HomeHandler{Templates: templates, PageData: p}).Methods("GET")
 
 	addr := fmt.Sprintf("%s:%d", s.config.ListenAddress, s.config.ListenPort)

src/server/templates/head.html

@@ -4,6 +4,6 @@
     <title>{{.Title}}</title>
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1">
-    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
+    <link href="{{if ne .BootstrapDirectory ``}}/static/bootstrap/css/bootstrap.min.css{{else}}https://cdn.jsdelivr.net/npm/bootstrap@5.3.8/dist/css/bootstrap.min.css{{end}}" rel="stylesheet">
 </head>
 {{end}}