name: PR Review Automation

on:
  pull_request:
    types: [opened, synchronize, reopened]

jobs:
  review:
    runs-on: ubuntu-latest
    container:
      image: ubuntu:22.04
    steps:
      - name: Install dependencies
        run: |
          set -eux
          apt-get update -qq && apt-get install -y -qq git curl jq

      - name: Checkout code
        run: |
          git init
          git remote add origin http://172.0.0.29:3000/sarman/tftsr-devops_investigation.git
          git fetch --depth=1 origin ${{ github.head_ref }}
          git checkout FETCH_HEAD

      - name: Get PR diff
        id: diff
        run: |
          git fetch origin ${{ github.base_ref }}
          git diff origin/${{ github.base_ref }}..HEAD > /tmp/pr_diff.txt
          echo "diff_size=$(wc -l < /tmp/pr_diff.txt)" >> $GITHUB_OUTPUT

      - name: Analyze with Ollama
        if: steps.diff.outputs.diff_size > '0'
        env:
          OLLAMA_URL: http://172.0.0.29:3000/ollama/v1
          API_KEY: ${{ secrets.OLLAMA_API_KEY }}
        run: |
          DIFF_CONTENT=$(cat /tmp/pr_diff.txt)
          PROMPT="Analyze the following code changes for completion, completeness, correctness, security issues, and best practices. PR Title: ${{ github.event.pull_request.title }}. Diff: $DIFF_CONTENT. Provide review with: 1) Completion check, 2) Completeness check, 3) Bugs/errors, 4) Security issues, 5) Best practices. Then give specific comments with suggested fixes."
          echo "Calling Ollama API..."
          RESPONSE=$(curl -s -X POST "$OLLAMA_URL/chat" -H "Authorization: Bearer $API_KEY" -H "Content-Type: application/json" -d "{\"model\":\"qwen3-coder-next:latest\",\"messages\":[{\"role\":\"user\",\"content\":\"$PROMPT\"}],\"stream\":false}")
          echo "Response: $RESPONSE" > /tmp/ollama_response.txt
          echo "$RESPONSE" > /tmp/ollama_response.json
          echo "Response saved to /tmp/ollama_response.json"
          if [ -z "$RESPONSE" ]; then
            echo "ERROR: Empty response from Ollama"
            exit 1
          fi
          REVIEW=$(echo "$RESPONSE" | jq -r '.choices[0].message.content // empty' 2>/dev/null || echo "Failed to parse jq response")
          echo "$REVIEW" > /tmp/pr_review.txt
          if [ -z "$REVIEW" ]; then
            echo "WARNING: No review content extracted"
          fi

      - name: Post review comment
        if: success()
        env:
          TF_TOKEN: ${{ secrets.TFT_GITEA_TOKEN }}
          PR_NUMBER: ${{ github.event.pull_request.number }}
        run: |
          if [ -f "/tmp/pr_review.txt" ] && [ -s "/tmp/pr_review.txt" ]; then
            REVIEW_BODY=$(cat /tmp/pr_review.txt | head -c 65536)
             curl -s -X POST "http://172.0.0.29:3000/api/v1/repos/sarman/tftsr-devops_investigation/pulls/$PR_NUMBER/reviews" -H "Authorization: token $TF_TOKEN" -H "Content-Type: application/json" -d "{\"body\": \"🤖 Automated PR Review:\n\n$REVIEW_BODY\n\n---\n*this is an automated review from Ollama*\", \"event\": \"COMMENT\"}"
          else
            echo "No review to post"
          fi