added possibility to ignore MagicMirror repo in updatenotification (#3002)

was [requested in the
forum](https://forum.magicmirror.builders/topic/17519/updatenotification).

- added possibility to exclude MagicMirror Repo and renamed it from
`default` to `MagicMirror`
- improved getting `behind` in case a hard `git fetch` was already done
- removed test "excludes repo if refs don't match regex" because of
above improvement this case is obsolete
- improved `git fetch --dry-run` with `-n` option to exclude tags (noise
reduction)

modules/default/updatenotification/git_helper.js

@@ -36,7 +36,7 @@ class GitHelper {
 	async add(moduleName) {
 		let moduleFolder = BASE_DIR;
 
-		if (moduleName !== "default") {
+		if (moduleName !== "MagicMirror") {
 			moduleFolder = `${moduleFolder}modules/${moduleName}`;
 		}
 
@@ -68,7 +68,7 @@ class GitHelper {
 			isBehindInStatus: false
 		};
 
-		if (repo.module === "default") {
+		if (repo.module === "MagicMirror") {
 			// the hash is only needed for the mm repo
 			const { stderr, stdout } = await this.execShell(`cd ${repo.folder} && git rev-parse HEAD`);
 
@@ -121,7 +121,7 @@ class GitHelper {
 			return gitInfo;
 		}
 
-		const { stderr } = await this.execShell(`cd ${repo.folder} && git fetch --dry-run`);
+		const { stderr } = await this.execShell(`cd ${repo.folder} && git fetch -n --dry-run`);
 
 		// example output:
 		// From https://github.com/MichMich/MagicMirror
@@ -129,14 +129,16 @@ class GitHelper {
 		// here the result is in stderr (this is a git default, don't ask why ...)
 		const matches = stderr.match(this.getRefRegex(gitInfo.current));
 
-		if (!matches || !matches[0]) {
-			// no refs found, nothing to do
-			return;
+		// this is the default if there was no match from "git fetch -n --dry-run".
+		// Its a fallback because if there was a real "git fetch", the above "git fetch -n --dry-run" would deliver nothing.
+		let refDiff = gitInfo.current + "..origin/" + gitInfo.current;
+		if (matches && matches[0]) {
+			refDiff = matches[0];
 		}
 
 		// get behind with refs
 		try {
-			const { stdout } = await this.execShell(`cd ${repo.folder} && git rev-list --ancestry-path --count ${matches[0]}`);
+			const { stdout } = await this.execShell(`cd ${repo.folder} && git rev-list --ancestry-path --count ${refDiff}`);
 			gitInfo.behind = parseInt(stdout);
 
 			return gitInfo;

modules/default/updatenotification/node_helper.js

@@ -19,7 +19,9 @@ module.exports = NodeHelper.create({
 			}
 		}
 
-		await this.gitHelper.add("default");
+		if (!this.ignoreUpdateChecking("MagicMirror")) {
+			await this.gitHelper.add("MagicMirror");
+		}
 	},
 
 	async socketNotificationReceived(notification, payload) {

modules/default/updatenotification/updatenotification.js

@@ -77,7 +77,7 @@ Module.register("updatenotification", {
 
 	addFilters() {
 		this.nunjucksEnvironment().addFilter("diffLink", (text, status) => {
-			if (status.module !== "default") {
+			if (status.module !== "MagicMirror") {
 				return text;
 			}
 

modules/default/updatenotification/updatenotification.njk

@@ -3,7 +3,7 @@
     <div class="small bright">
       <i class="fas fa-exclamation-circle"></i>
       <span>
-        {% set mainTextLabel = "UPDATE_NOTIFICATION" if name === "default" else "UPDATE_NOTIFICATION_MODULE" %}
+        {% set mainTextLabel = "UPDATE_NOTIFICATION" if name === "MagicMirror" else "UPDATE_NOTIFICATION_MODULE" %}
         {{ mainTextLabel | translate({MODULE_NAME: name}) }}
       </span>
     </div>