name: CI

on:
  pull_request:
    branches: [develop, master]

permissions:
  contents: read
  pull-requests: read

env:
  CARGO_TERM_COLOR: always

jobs:
  # ─── Fast gates (fail early, save CI minutes) ───

  check-test-presence:
    name: test presence
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 50
      - name: Check filter modules have tests
        run: |
          git fetch origin "${{ github.base_ref }}" --depth=1 || true
          bash scripts/check-test-presence.sh "origin/${{ github.base_ref }}"

  fmt:
    name: fmt
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
        with:
          components: rustfmt
      - run: cargo fmt --all -- --check

  clippy:
    name: clippy
    needs: fmt
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
        with:
          components: clippy
      - uses: Swatinem/rust-cache@v2
      - run: cargo clippy --all-targets

  # ─── Parallel gates (all need code to compile) ───

  test:
    name: test (${{ matrix.os }})
    needs: clippy
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, windows-latest, macos-latest]
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
      - uses: Swatinem/rust-cache@v2
      - run: cargo test --all

  security:
    name: Security Scan
    needs: clippy
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - uses: dtolnay/rust-toolchain@stable

      - uses: Swatinem/rust-cache@v2

      - name: Install cargo-audit
        run: cargo install cargo-audit

      - name: Cargo Audit (CVE check)
        run: |
          echo "## Security Scan Results" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "### Dependency Vulnerabilities" >> $GITHUB_STEP_SUMMARY
          if cargo audit 2>&1 | tee audit.log; then
            echo "No known vulnerabilities detected" >> $GITHUB_STEP_SUMMARY
          else
            echo "Vulnerabilities found:" >> $GITHUB_STEP_SUMMARY
            echo '```' >> $GITHUB_STEP_SUMMARY
            cat audit.log >> $GITHUB_STEP_SUMMARY
            echo '```' >> $GITHUB_STEP_SUMMARY
            echo "::warning::Dependency vulnerabilities detected - review required"
          fi
          echo "" >> $GITHUB_STEP_SUMMARY

      - name: Critical files check
        run: |
          echo "### Critical Files Modified" >> $GITHUB_STEP_SUMMARY
          CRITICAL=$(git diff --name-only origin/master...HEAD | grep -E "(runner|summary|tracking|init|pnpm_cmd|container)\.rs|Cargo\.toml|workflows/.*\.yml" || true)
          if [ -n "$CRITICAL" ]; then
            echo "**HIGH RISK**: The following critical files were modified:" >> $GITHUB_STEP_SUMMARY
            echo '```' >> $GITHUB_STEP_SUMMARY
            echo "$CRITICAL" >> $GITHUB_STEP_SUMMARY
            echo '```' >> $GITHUB_STEP_SUMMARY
            echo "" >> $GITHUB_STEP_SUMMARY
            echo "**Required Actions:**" >> $GITHUB_STEP_SUMMARY
            echo "- [ ] Manual security review by 2 maintainers" >> $GITHUB_STEP_SUMMARY
            echo "- [ ] Verify no shell injection vectors" >> $GITHUB_STEP_SUMMARY
            echo "- [ ] Check input validation remains intact" >> $GITHUB_STEP_SUMMARY
            echo "::warning::Critical RTK files modified - enhanced review required"
          else
            echo "No critical files modified" >> $GITHUB_STEP_SUMMARY
          fi
          echo "" >> $GITHUB_STEP_SUMMARY

      - name: Dangerous patterns scan
        run: |
          echo "### Dangerous Code Patterns" >> $GITHUB_STEP_SUMMARY
          PATTERNS=$(git diff origin/master...HEAD | grep -E "Command::new\(\"sh\"|Command::new\(\"bash\"|\.env\(\"LD_PRELOAD|\.env\(\"PATH|reqwest::|std::net::|TcpStream|UdpSocket|unsafe \{|\.unwrap\(\) |panic!\(|todo!\(|unimplemented!\(" || true)
          if [ -n "$PATTERNS" ]; then
            echo "**Potentially dangerous patterns detected:**" >> $GITHUB_STEP_SUMMARY
            echo '```diff' >> $GITHUB_STEP_SUMMARY
            echo "$PATTERNS" | head -30 >> $GITHUB_STEP_SUMMARY
            echo '```' >> $GITHUB_STEP_SUMMARY
            echo "" >> $GITHUB_STEP_SUMMARY
            echo "**Security Concerns:**" >> $GITHUB_STEP_SUMMARY
            echo "$PATTERNS" | grep -q "Command::new" && echo "- Shell command execution detected" >> $GITHUB_STEP_SUMMARY || true
            echo "$PATTERNS" | grep -q "\.env\(\"" && echo "- Environment variable manipulation" >> $GITHUB_STEP_SUMMARY || true
            echo "$PATTERNS" | grep -q "reqwest::\|std::net::\|TcpStream\|UdpSocket" && echo "- Network operations added" >> $GITHUB_STEP_SUMMARY || true
            echo "$PATTERNS" | grep -q "unsafe" && echo "- Unsafe code blocks" >> $GITHUB_STEP_SUMMARY || true
            echo "$PATTERNS" | grep -q "\.unwrap\(\)\|panic!\(" && echo "- Panic-inducing code" >> $GITHUB_STEP_SUMMARY || true
            echo "::warning::Dangerous code patterns detected - manual review required"
          else
            echo "No dangerous patterns detected" >> $GITHUB_STEP_SUMMARY
          fi
          echo "" >> $GITHUB_STEP_SUMMARY

      - name: New dependencies check
        run: |
          echo "### Dependencies Changes" >> $GITHUB_STEP_SUMMARY
          if git diff origin/master...HEAD Cargo.toml | grep -E "^\+.*=" | grep -v "^\+\+\+" > new_deps.txt; then
            echo "**New dependencies added:**" >> $GITHUB_STEP_SUMMARY
            echo '```toml' >> $GITHUB_STEP_SUMMARY
            cat new_deps.txt >> $GITHUB_STEP_SUMMARY
            echo '```' >> $GITHUB_STEP_SUMMARY
            echo "" >> $GITHUB_STEP_SUMMARY
            echo "**Required Actions:**" >> $GITHUB_STEP_SUMMARY
            echo "- [ ] Audit each new dependency on crates.io" >> $GITHUB_STEP_SUMMARY
            echo "- [ ] Check maintainer reputation and download counts" >> $GITHUB_STEP_SUMMARY
            echo "- [ ] Verify no typosquatting (e.g., 'reqwest' vs 'request')" >> $GITHUB_STEP_SUMMARY
            echo "::warning::New dependencies require supply chain audit"
          else
            echo "No new dependencies added" >> $GITHUB_STEP_SUMMARY
          fi
          echo "" >> $GITHUB_STEP_SUMMARY

      - name: Clippy security lints
        run: |
          echo "### Clippy Security Lints" >> $GITHUB_STEP_SUMMARY
          if cargo clippy --all-targets -- -W clippy::unwrap_used -W clippy::panic -W clippy::expect_used 2>&1 | tee clippy.log | grep -E "warning:|error:"; then
            echo "Security-related lints triggered:" >> $GITHUB_STEP_SUMMARY
            echo '```' >> $GITHUB_STEP_SUMMARY
            grep -E "warning:|error:" clippy.log | head -20 >> $GITHUB_STEP_SUMMARY
            echo '```' >> $GITHUB_STEP_SUMMARY
            echo "::warning::Clippy security lints failed"
          else
            echo "All security lints passed" >> $GITHUB_STEP_SUMMARY
          fi

      - name: Summary verdict
        run: |
          echo "---" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "### Security Review Verdict" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**This is an automated security scan. A human maintainer must:**" >> $GITHUB_STEP_SUMMARY
          echo "1. Review all warnings above" >> $GITHUB_STEP_SUMMARY
          echo "2. Verify PR intent matches actual code changes" >> $GITHUB_STEP_SUMMARY
          echo "3. Check for subtle backdoors or logic bombs" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**For high-risk PRs (critical files modified):**" >> $GITHUB_STEP_SUMMARY
          echo "- Require approval from 2 maintainers" >> $GITHUB_STEP_SUMMARY
          echo "- Test in isolated environment before merge" >> $GITHUB_STEP_SUMMARY

  semgrep:
    name: semgrep security scan
    needs: clippy
    runs-on: ubuntu-latest
    container:
      image: semgrep/semgrep
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - run: semgrep scan --config .semgrep.yml --baseline-commit ${{ github.event.pull_request.base.sha }} --error

  benchmark:
    name: benchmark
    needs: clippy
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: dtolnay/rust-toolchain@stable

      - uses: Swatinem/rust-cache@v2

      - name: Build rtk
        run: cargo build --release

      - name: Install system tools
        run: sudo apt-get install -y tree

      - name: Install Python tools
        run: pip install ruff pytest mypy

      - name: Install Go
        uses: actions/setup-go@v5
        with:
          go-version: "stable"

      - name: Install Go tools
        run: go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest

      - name: Run benchmark
        run: ./scripts/benchmark.sh

  # ─── AI Doc Review: develop PRs only ───

  doc-review:
    name: doc review
    if: github.base_ref == 'develop'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Gather PR context
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          PR_NUM=${{ github.event.pull_request.number }}
          gh pr diff "$PR_NUM" --name-only > changed_files.txt
          gh pr diff "$PR_NUM" | head -c 12000 > diff.txt
          gh pr view "$PR_NUM" --json title,body --jq '"PR Title: \(.title)\nPR Description: \(.body)"' > pr_info.txt

      - name: Build prompt files
        run: |
          # System prompt
          cat <<'EOF' > system_prompt.txt
          You are a documentation reviewer for the RTK project.
          You will receive the project's CONTRIBUTING.md (which contains the documentation rules), the PR info, changed files, and diff.
          Your job: based ONLY on the documentation rules in CONTRIBUTING.md, decide if the PR includes the required documentation updates.

          IMPORTANT:
          - CI/CD changes, test-only changes, and refactors with no user-facing impact do NOT require doc updates.
          - Be practical, not pedantic. Small obvious fixes don't need CHANGELOG entries.
          - Only flag missing docs when there is a clear user-facing change.
          EOF

          # User prompt: concatenate files (no printf, no variable expansion issues)
          {
            cat pr_info.txt
            echo ""
            echo "---"
            echo "CONTRIBUTING.md:"
            cat CONTRIBUTING.md
            echo ""
            echo "---"
            echo "Changed files:"
            cat changed_files.txt
            echo ""
            echo "---"
            echo "Diff (may be truncated):"
            cat diff.txt
          } > user_prompt.txt

      - name: AI documentation review
        env:
          ANTHROPIC_API_KEY: ${{ secrets.RTK_DOCS_ANTHROPIC_KEY }}
        run: |
          echo "## Documentation Review (AI)" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY

          if [ -z "$ANTHROPIC_API_KEY" ]; then
            echo "::warning::ANTHROPIC_API_KEY not configured — skipping AI doc review"
            echo "Skipped: ANTHROPIC_API_KEY secret not configured." >> $GITHUB_STEP_SUMMARY
            exit 0
          fi

          echo "::group::Preparing API request"
          echo "System prompt: $(wc -c < system_prompt.txt) bytes"
          echo "User prompt: $(wc -c < user_prompt.txt) bytes"
          SYSTEM_JSON=$(jq -Rs . < system_prompt.txt)
          USER_JSON=$(jq -Rs . < user_prompt.txt)
          echo "::endgroup::"

          echo "::group::Calling Claude API (claude-sonnet-4-6)"
          RESPONSE=$(curl -s -w "\n%{http_code}" https://api.anthropic.com/v1/messages \
            -H "content-type: application/json" \
            -H "x-api-key: $ANTHROPIC_API_KEY" \
            -H "anthropic-version: 2023-06-01" \
            -d "{
              \"model\": \"claude-sonnet-4-6\",
              \"max_tokens\": 1024,
              \"messages\": [{\"role\": \"user\", \"content\": $USER_JSON}],
              \"system\": $SYSTEM_JSON,
              \"output_config\": {
                \"format\": {
                  \"type\": \"json_schema\",
                  \"schema\": {
                    \"type\": \"object\",
                    \"properties\": {
                      \"status\": {\"type\": \"string\", \"enum\": [\"PASS\", \"FAIL\"]},
                      \"reasoning\": {\"type\": \"array\", \"items\": {\"type\": \"string\"}},
                      \"files_to_update\": {\"type\": \"array\", \"items\": {\"type\": \"string\"}}
                    },
                    \"required\": [\"status\", \"reasoning\", \"files_to_update\"],
                    \"additionalProperties\": false
                  }
                }
              }
            }")

          HTTP_CODE=$(echo "$RESPONSE" | tail -1)
          BODY=$(echo "$RESPONSE" | sed '$d')
          echo "HTTP status: $HTTP_CODE"
          echo "::endgroup::"

          if [ "$HTTP_CODE" != "200" ]; then
            echo "::warning::Claude API returned HTTP $HTTP_CODE — skipping doc review"
            echo "Skipped: API error (HTTP $HTTP_CODE)" >> $GITHUB_STEP_SUMMARY
            echo '```' >> $GITHUB_STEP_SUMMARY
            echo "$BODY" | head -10 >> $GITHUB_STEP_SUMMARY
            echo '```' >> $GITHUB_STEP_SUMMARY
            exit 0
          fi

          # Parse structured JSON response
          REVIEW_JSON=$(echo "$BODY" | jq -r '.content[0].text // empty')

          if [ -z "$REVIEW_JSON" ]; then
            echo "::warning::Empty response from Claude API — skipping doc review"
            echo "Skipped: empty API response" >> $GITHUB_STEP_SUMMARY
            echo "Raw response:"
            echo "$BODY" | head -20
            exit 0
          fi

          echo "::group::AI Review Result"
          echo "$REVIEW_JSON" | jq .
          echo "::endgroup::"

          STATUS=$(echo "$REVIEW_JSON" | jq -r '.status')
          REASONING=$(echo "$REVIEW_JSON" | jq -r '.reasoning[]' 2>/dev/null)
          FILES=$(echo "$REVIEW_JSON" | jq -r '.files_to_update[]' 2>/dev/null)

          echo "### Verdict: ${STATUS}" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY

          if [ -n "$REASONING" ]; then
            echo "**Reasoning:**" >> $GITHUB_STEP_SUMMARY
            echo "$REASONING" | while IFS= read -r line; do
              echo "- $line" >> $GITHUB_STEP_SUMMARY
            done
            echo "" >> $GITHUB_STEP_SUMMARY
          fi

          if [ "$STATUS" = "FAIL" ] && [ -n "$FILES" ]; then
            echo "**Files to update:**" >> $GITHUB_STEP_SUMMARY
            echo "$FILES" | while IFS= read -r f; do
              echo "- \`$f\`" >> $GITHUB_STEP_SUMMARY
            done
            echo "" >> $GITHUB_STEP_SUMMARY
          fi

          if [ "$STATUS" = "PASS" ]; then
            echo "Documentation review passed."
          elif [ "$STATUS" = "FAIL" ]; then
            echo "::error::Documentation review failed — see summary for details"
            exit 1
          else
            echo "::warning::Unexpected status '${STATUS}' — skipping"
            echo "Unexpected AI response status: ${STATUS}" >> $GITHUB_STEP_SUMMARY
          fi