Add auto release code

.github/workflows/release.yaml

@@ -0,0 +1,27 @@
+name: "Release: Manage Versions"
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  HandleVersionChange:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Run script
+        uses: actions/github-script@v6
+        with:
+          script: |
+            const script = require('./version-handling')
+            script({ github, context, core })
+
+      - name: Commit changes
+        id: commit_changes
+        uses: EndBug/add-and-commit@v9.1.1
+        with:
+          add: "./Echo.xcodeproj/project.pbxproj"
+          message: "[AUTO RELEASE]"

version-handling.js

@@ -0,0 +1,68 @@
+const fs = require("fs");
+const path = require("path");
+
+const getNewVersion = (currentVersion, commit) => {
+  const [major, minor, patch] = currentVersion.split(".");
+
+  if (commit.includes("[PATCH]")) {
+    return `${major}.${minor}.${parseInt(patch) + 1}`;
+  } else if (commit.includes("[MINOR]")) {
+    return `${major}.${parseInt(minor) + 1}.${0}`;
+  } else if (commit.includes("[MAJOR]")) {
+    return `${parseInt(major) + 1}.${0}.${0}`;
+  } else {
+    return null;
+  }
+};
+
+module.exports = ({ github, context, core }) => {
+  const commit = context.payload.commits.map((x) => x.message).join(" = ");
+
+  console.log("Commit message:", commit);
+
+  const projectFilePath = path.join(
+    __dirname,
+    "./DragToSpeak.xcodeproj/project.pbxproj"
+  );
+
+  console.log(`Getting project file: ${projectFilePath}`);
+
+  const contents = fs
+    .readFileSync(projectFilePath, {
+      encoding: "utf8",
+    })
+    .toString();
+
+  const regex = new RegExp(/MARKETING_VERSION = (\d+\.\d+\.\d+);/, "g");
+
+  const results = contents.matchAll(regex);
+
+  let count = 0;
+  let currentVersion = null;
+
+  for (const result of results) {
+    if (count == 0) {
+      currentVersion = result[1];
+    } else {
+      if (result[1] !== currentVersion)
+        throw new Error("All versions didn't match");
+    }
+    count++;
+  }
+
+  console.log(`Changing ${count} version numbers`);
+
+  console.log("Current version is: ", currentVersion);
+
+  const newVersion = getNewVersion(currentVersion, commit);
+
+  if (newVersion === null) {
+    console.log("You didn't ask for a new version");
+  } else {
+    console.log("New version", newVersion);
+
+    const newContents = contents.replaceAll(currentVersion, newVersion);
+
+    fs.writeFileSync(projectFilePath, newContents);
+  }
+};