From a1a490948293ee780c16ade65c0f46f735d97f63 Mon Sep 17 00:00:00 2001
From: Jack Stevenson <jacsteve@amazon.com>
Date: Thu, 1 Feb 2024 15:34:37 +1100
Subject: [PATCH] build: update projen version as part of upgrade workflow
 (#695)

Adds a task to run as part of the upgrade-mainline workflow which updates the projen version such that PDK and its vended projects all depend on the same projen version.
---
 .github/workflows/upgrade-mainline.yml      |  2 ++
 packages/monorepo/.projen/tasks.json        |  8 ++++++++
 packages/monorepo/package.json              |  1 +
 packages/monorepo/project.json              |  7 +++++++
 packages/monorepo/scripts/upgrade-projen.ts | 15 +++++++++++++++
 projenrc/projects/monorepo-project.ts       |  3 +++
 6 files changed, 36 insertions(+)
 create mode 100644 packages/monorepo/scripts/upgrade-projen.ts

diff --git a/.github/workflows/upgrade-mainline.yml b/.github/workflows/upgrade-mainline.yml
index 179ddd4a1..8c9c02b03 100644
--- a/.github/workflows/upgrade-mainline.yml
+++ b/.github/workflows/upgrade-mainline.yml
@@ -20,6 +20,8 @@ jobs:
           ref: mainline
       - name: PDK Init
         uses: ./.github/actions/pdk-init
+      - name: Upgrade projen
+        run: pnpm nx run @aws/monorepo:upgrade-projen
       - name: Upgrade dependencies
         run: pnpm projen upgrade-deps
       - name: Build
diff --git a/packages/monorepo/.projen/tasks.json b/packages/monorepo/.projen/tasks.json
index c22589604..a3b3482c8 100644
--- a/packages/monorepo/.projen/tasks.json
+++ b/packages/monorepo/.projen/tasks.json
@@ -183,6 +183,14 @@
         }
       ]
     },
+    "upgrade-projen": {
+      "name": "upgrade-projen",
+      "steps": [
+        {
+          "exec": "ts-node ./scripts/upgrade-projen.ts"
+        }
+      ]
+    },
     "watch": {
       "name": "watch",
       "description": "Watch & compile in the background",
diff --git a/packages/monorepo/package.json b/packages/monorepo/package.json
index 83d830d83..48c2b9e52 100644
--- a/packages/monorepo/package.json
+++ b/packages/monorepo/package.json
@@ -25,6 +25,7 @@
     "pre-compile": "pnpm exec projen pre-compile",
     "test": "pnpm exec projen test",
     "test:watch": "pnpm exec projen test:watch",
+    "upgrade-projen": "pnpm exec projen upgrade-projen",
     "watch": "pnpm exec projen watch"
   },
   "author": {
diff --git a/packages/monorepo/project.json b/packages/monorepo/project.json
index 4c3b9c241..64db91a46 100644
--- a/packages/monorepo/project.json
+++ b/packages/monorepo/project.json
@@ -141,6 +141,13 @@
         "command": "pnpm exec projen docgen",
         "cwd": "packages/monorepo"
       }
+    },
+    "upgrade-projen": {
+      "executor": "nx:run-commands",
+      "options": {
+        "command": "pnpm exec projen upgrade-projen",
+        "cwd": "packages/monorepo"
+      }
     }
   },
   "//": "~~ Generated by projen. To modify, edit .projenrc.js and run \"pnpm exec projen\"."
diff --git a/packages/monorepo/scripts/upgrade-projen.ts b/packages/monorepo/scripts/upgrade-projen.ts
new file mode 100644
index 000000000..5fb31226c
--- /dev/null
+++ b/packages/monorepo/scripts/upgrade-projen.ts
@@ -0,0 +1,15 @@
+import * as ncu from "npm-check-updates";
+import * as fs from "fs";
+import * as path from "path";
+
+(async () => {
+  // Get the latest minor version update of projen
+  const { projen } = await ncu.run({
+    jsonUpgraded: true,
+    target: "minor",
+    filter: "projen",
+  }) as any;
+
+  // Write the projen version to projen-version.ts
+  fs.writeFileSync(path.resolve(__dirname, "../src/components/projen-version.ts"), `export default "^${projen}";`);
+})();
diff --git a/projenrc/projects/monorepo-project.ts b/projenrc/projects/monorepo-project.ts
index 3dafdc4a1..5ac89c76f 100644
--- a/projenrc/projects/monorepo-project.ts
+++ b/projenrc/projects/monorepo-project.ts
@@ -51,6 +51,9 @@ export class MonorepoProject extends PDKProject {
     // Don't check for a license header etc for projen-version.ts so this can be written via automation
     this.eslint?.addIgnorePattern("src/components/projen-version.ts");
 
+    // Add a task to upgrade the projen version. Ideally run before upgrade-deps in the root.
+    this.addTask("upgrade-projen").exec("ts-node ./scripts/upgrade-projen.ts")
+
     this.generateInterfaces();
   }