2 files changed, 97 insertions, 0 deletions
diff --git a/.github/scripts/checkDependencies.mjs b/.github/scripts/checkDependencies.mjs
new file mode 100644
index 000000000..2e351bbe6
--- /dev/null
+++ b/.github/scripts/checkDependencies.mjs
@@ -0,0 +1,71 @@
+import {Octokit} from "@octokit/rest";
+import fetch from "node-fetch";
+
+const labelName = "Waiting on Dependency PR";
+
+async function run() {
+    const octokit = new Octokit({
+        auth: process.env.GITHUB_TOKEN,
+        request: {
+            fetch: fetch,
+        },
+    });
+
+    const context = JSON.parse(process.env.GITHUB_CONTEXT);
+
+    const pull_request = context.event.pull_request;
+
+    const owner = context.repository_owner;
+    const name = context.repository.split("/")[1];
+
+    const prNumber = pull_request.number;
+    const prBody = pull_request.body || "";
+
+    const dependencyRegex = /## Dependencies/;
+    const match = prBody.match(dependencyRegex);
+
+    if (match) {
+        const prLinks = prBody.match(/- https:\/\/github\.com\/[\w-]+\/[\w-]+\/pull\/\d+/g);
+
+        if (prLinks && prLinks.length > 0) {
+            let hasOpenDependencies = false;
+
+            for (const link of prLinks) {
+                const [, depOwner, depRepo, depNumber] = link.match(/github\.com\/([\w-]+)\/([\w-]+)\/pull\/(\d+)/);
+                const {data: dependencyPr} = await octokit.pulls.get({
+                    owner: depOwner,
+                    repo: depRepo,
+                    pull_number: depNumber,
+                });
+
+                if (dependencyPr.state === "open") {
+                    hasOpenDependencies = true;
+                    break;
+                }
+            }
+
+            const labels = pull_request.labels.map(label => label.name);
+
+            if (hasOpenDependencies && !labels.includes(labelName)) {
+                await octokit.issues.addLabels({
+                    owner,
+                    repo: name,
+                    issue_number: prNumber,
+                    labels: [labelName],
+                });
+            } else if (!hasOpenDependencies && labels.includes(labelName)) {
+                await octokit.issues.removeLabel({
+                    owner,
+                    repo: name,
+                    issue_number: prNumber,
+                    name: labelName,
+                });
+            }
+        }
+    }
+}
+
+run().catch(error => {
+    console.error(error);
+    process.exit(1);
+});
diff --git a/.github/workflows/check_dependencies.yml b/.github/workflows/check_dependencies.yml
new file mode 100644
index 000000000..5f80c46f7
--- /dev/null
+++ b/.github/workflows/check_dependencies.yml
@@ -0,0 +1,26 @@
+name: Check PR Dependencies
+
+on:
+    pull_request_target:
+        types: [ opened, edited ]
+
+jobs:
+    check-dependencies:
+        runs-on: ubuntu-latest
+        steps:
+            -   name: Check out the repository
+                uses: actions/checkout@v3
+
+            -   name: Set up Node.js
+                uses: actions/setup-node@v3
+                with:
+                    node-version: '16'
+
+            -   name: Install dependencies
+                run: npm install @octokit/rest node-fetch
+
+            -   name: Run dependency check script
+                run: node .github/scripts/checkDependencies.mjs
+                env:
+                    GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+                    GITHUB_CONTEXT: ${{ toJson(github) }}