add: changesets + snapshot-this action (#1746)

* add: changesets + snapshot-this action

* add: changeset folder

* add: action credits

.changeset/README.md

@@ -0,0 +1,8 @@
+# Changesets
+
+Hello and welcome! This folder has been automatically generated by `@changesets/cli`, a build tool that works
+with multi-package repos, or single-package repos to help you version and publish your code. You can
+find the full documentation for it [in our repository](https://github.com/changesets/changesets)
+
+We have a quick list of common questions to get you started engaging with this project in
+[our documentation](https://github.com/changesets/changesets/blob/main/docs/common-questions.md)

.changeset/config.json

@@ -0,0 +1,11 @@
+{
+  "$schema": "https://unpkg.com/@changesets/config@2.0.0/schema.json",
+  "changelog": ["@changesets/changelog-github", { "repo": "medusajs/medusa" }],
+  "commit": false,
+  "fixed": [],
+  "linked": [],
+  "access": "public",
+  "baseBranch": "master",
+  "updateInternalDependencies": "patch",
+  "ignore": []
+}

.github/workflows/snapshot-this.yml

@@ -0,0 +1,133 @@
+# Inspired from https://github.com/Shopify/quilt/blob/main/.github/workflows/snapit.yml
+name: Snapshot This
+
+on:
+  issue_comment:
+    types:
+      - created
+
+concurrency: ${{ github.workflow }}-${{ github.ref }}
+
+jobs:
+  snapshot:
+    name: Snapshot Release
+    if: |
+      github.event.issue.pull_request && 
+      github.event.comment.body == '/snapshot-this'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Validate pull request
+        uses: actions/github-script@v6
+        with:
+          script: |
+            try {
+              // Add a rocket reaction to the comment
+              await github.rest.reactions.createForIssueComment({
+                ...context.repo,
+                comment_id: context.payload.comment.id,
+                content: 'rocket',
+              })
+
+              // Only allow comment creators who have "write" permissions to repo
+              const actorPermission = (await github.rest.repos.getCollaboratorPermissionLevel({
+                ...context.repo,
+                username: context.actor
+              })).data.permission
+              const isPermitted = ['write', 'admin'].includes(actorPermission)
+              if (!isPermitted) {
+                const errorMessage = 'Only users with write permission to the respository can run /snapshot-this'
+                await github.rest.issues.createComment({
+                  ...context.repo,
+                  issue_number: context.issue.number,
+                  body: errorMessage,
+                })
+                core.setFailed(errorMessage)
+                return;
+              }
+
+              const pullRequest = await github.rest.pulls.get({
+                ...context.repo,
+                pull_number: context.issue.number,
+              })
+              // Pull request from fork
+              if (context.payload.repository.full_name !== pullRequest.data.head.repo.full_name) {
+                const errorMessage = '`/snapshot-this` is not supported on pull requests from forked repositories.'
+                await github.rest.issues.createComment({
+                  ...context.repo,
+                  issue_number: context.issue.number,
+                  body: errorMessage,
+                })
+                core.setFailed(errorMessage)
+              }
+            } catch (err) {
+              core.setFailed(`Request failed with error ${err}`)
+            }
+      - name: Checkout pull request branch
+        uses: actions/checkout@v2
+        with:
+          ref: ${{ format('refs/pull/{0}/merge', github.event.issue.number) }}
+
+      # Because changeset entries are consumed and removed on the
+      # 'changeset-release/main' branch, we need to reset the files
+      # so the following 'changeset version --snapshot' command will
+      # regenerate the package version bumps with the snapshot releases
+      - name: Reset changeset entries on changeset-release/main branch
+        run: |
+          if [[ $(git branch --show-current) == 'changeset-release/main' ]]; then
+            git checkout origin/main -- .changeset
+          fi
+      - name: Setup Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: 16.x
+          cache: "yarn"
+
+      - name: Bootstrap packages
+        uses: ./.github/actions/cache-bootstrap
+        with:
+          extension: snapshot-this
+
+      - name: Create an .npmrc
+        env:
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+        run: |
+          cat << EOF > "$HOME/.npmrc"
+            //registry.npmjs.org/:_authToken=$NPM_TOKEN
+          EOF
+
+      - name: Create and publish snapshot release
+        uses: actions/github-script@v6
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          script: |
+            await exec.exec('yarn run changeset version --snapshot snapshot')
+            const {stdout} = await exec.getExecOutput('yarn run release:snapshot')
+            const newTags = Array
+              .from(stdout.matchAll(/New tag:\s+([^\s\n]+)/g))
+              .map(([_, tag]) => tag)
+            if (newTags.length) {
+              const multiple = newTags.length > 1
+              const body = (
+                `#### :rocket: A snapshot release has been made for this PR\n\n` +
+                `Test the snapshot${multiple ? 's' : ''} by updating your \`package.json\` ` +
+                `with the newly published version${multiple ? 's' : ''}:\n` +
+                newTags.map(tag => (
+                  '```sh\n' +
+                  `yarn add ${tag}\n` +
+                  '```'
+                )).join('\n') + 
+                `\n\n> Latest commit: ${context.sha}`
+
+              )
+              await github.rest.issues.createComment({
+                ...context.repo,
+                issue_number: context.issue.number,
+                body,
+              })
+              await github.rest.reactions.createForIssueComment({
+                ...context.repo,
+                comment_id: context.payload.comment.id,
+                content: 'hooray',
+              })
+            }

package.json

@@ -67,9 +67,12 @@
     "test:integration:api": "jest --config=integration-tests/jest.config.js --projects=integration-tests/api",
     "test:integration:plugins": "jest --config=integration-tests/jest.config.js --projects=integration-tests/plugins",
     "test:fixtures": "jest --config=docs-util/jest.config.js --runInBand",
-    "generate:services": "typedoc --options typedoc.services.js"
+    "generate:services": "typedoc --options typedoc.services.js",
+    "release:snapshot": "changeset publish --no-git-tags --snapshot --tag snapshot"
   },
   "dependencies": {
+    "@changesets/changelog-github": "^0.4.5",
+    "@changesets/cli": "^2.23.0",
     "global": "^4.4.0",
     "import-from": "^3.0.0",
     "oas-normalize": "^5.0.1",