Add review workflow

Author: soimkim

.github/workflows/pull-request.yml

@@ -8,6 +8,54 @@ on:
       - '*'
 
 jobs:
+  review:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: write
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v3
+      - name: Set up Node
+        uses: actions/setup-node@v3
+      - name: Install GoogleGenerativeAI
+        run: |
+          npm install @google/generative-ai
+      - name: Get git diff
+        run: |
+          git fetch origin "${{ github.event.pull_request.base.ref }}"
+          git fetch origin "${{ github.event.pull_request.head.ref }}"
+          git diff --unified=0 "origin/${{ github.event.pull_request.base.ref }}" > "diff.txt"
+      - name: Run Gemini-1.5-flash
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const fs = require("fs");
+            const diff_output = fs.readFileSync("diff.txt",'utf8');
+            
+            const { GoogleGenerativeAI } = require("@google/generative-ai");
+            const genAI = new GoogleGenerativeAI("${{ secrets.GEMINI_API_KEY }}");
+            const model = genAI.getGenerativeModel({ model: "gemini-1.5-flash"});
+            
+            const prompt = `You are a senior software engineer and need to perform a code review based on the results of a given git diff. Review the changed code from different perspectives and let us know if there are any changes that need to be made. If you see any code that needs to be fixed in the result of the git diff, you need to calculate the exact line number by referring to the “@@ -0,0 +0,0 @@” part. The output format is \[{“path”:“{ filepath }”, “line”: { line }, “text”: { review comment }, “side”: “RIGHT"}\] format must be respected.\n<git diff>${diff_output}</git diff>`;
+            const result = await model.generateContent(prompt);
+            const response = await result.response;
+            const text = response.text();
+            
+            fs.writeFileSync('res.txt',text);
+            console.log('Save Results!')
+      - name: output
+        id: store
+        run: |
+          COMMENT=$(sed '/^```/d' res.txt | jq -c .)
+          echo "comment=$COMMENT" >> $GITHUB_OUTPUT
+      - name: Add Pull Request Review Comment
+        uses: nbaztec/[email protected]
+        with:
+          comments: ${{ steps.store.outputs.comment }}
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          repo-token-user-login: 'github-actions[bot]' # The user.login for temporary GitHub tokens
+          allow-repeats: false # This is the default
   check-commit-message:
     uses: fosslight/.github/.github/workflows/base-check-commit-message.yml@main
     secrets: