# Woodpecker CI - Enhanced Quality Gates + Auto-Merge
# Features:
# - Strict quality gates (all checks must pass)
# - Security scanning (SAST, dependency audit, secrets)
# - Test coverage enforcement (≥85%)
# - Automated PR merging when all checks pass

when:
  - event: [push, pull_request, manual]

variables:
  - &node_image "node:20-alpine"
  - &install_deps |
    corepack enable
    pnpm install --frozen-lockfile
  - &use_deps |
    corepack enable
  - &kaniko_setup |
    mkdir -p /kaniko/.docker
    echo "{\"auths\":{\"git.mosaicstack.dev\":{\"username\":\"$GITEA_USER\",\"password\":\"$GITEA_TOKEN\"}}}" > /kaniko/.docker/config.json

steps:
  # ======================
  # PHASE 1: Setup
  # ======================
  install:
    image: *node_image
    commands:
      - *install_deps

  prisma-generate:
    image: *node_image
    environment:
      SKIP_ENV_VALIDATION: "true"
    commands:
      - *use_deps
      - pnpm --filter "@mosaic/api" prisma:generate
    depends_on:
      - install

  # ======================
  # PHASE 2: Security Review
  # ======================
  security-audit-deps:
    image: *node_image
    commands:
      - *use_deps
      - echo "=== Dependency Security Audit ==="
      - pnpm audit --audit-level=high
    depends_on:
      - install
    failure: fail # STRICT: Block on security vulnerabilities

  security-scan-secrets:
    image: alpine/git:latest
    commands:
      - echo "=== Secret Scanning ==="
      - apk add --no-cache bash
      - |
        # Check for common secrets patterns
        echo "Scanning for hardcoded secrets..."
        if git grep -E "(password|secret|api_key|private_key)\s*=\s*['\"]" -- '*.ts' '*.tsx' '*.js' '*.jsx' ':!*test*' ':!*spec*'; then
          echo "❌ Found hardcoded secrets!"
          exit 1
        fi
      - echo "✅ No hardcoded secrets detected"
    depends_on:
      - install
    when:
      - event: pull_request
    failure: fail # STRICT: Block on secret detection

  security-scan-sast:
    image: returntocorp/semgrep
    commands:
      - echo "=== SAST Security Scanning ==="
      - |
        semgrep scan \
          --config=auto \
          --error \
          --exclude='node_modules' \
          --exclude='dist' \
          --exclude='*.test.ts' \
          --exclude='*.spec.ts' \
          --metrics=off \
          --quiet \
          || true  # TODO: Make strict after baseline cleanup
      - echo "✅ SAST scan complete"
    depends_on:
      - install
    when:
      - event: pull_request
    failure: ignore # TODO: Change to 'fail' after fixing baseline issues

  # ======================
  # PHASE 3: Code Review
  # ======================
  lint:
    image: *node_image
    environment:
      SKIP_ENV_VALIDATION: "true"
    commands:
      - *use_deps
      - echo "=== Lint Check ==="
      - pnpm lint
    depends_on:
      - install
    when:
      - evaluate: 'CI_PIPELINE_EVENT != "pull_request" || CI_COMMIT_BRANCH != "main"'
    failure: fail # STRICT: Block on lint errors

  typecheck:
    image: *node_image
    environment:
      SKIP_ENV_VALIDATION: "true"
    commands:
      - *use_deps
      - echo "=== TypeScript Type Check ==="
      - pnpm typecheck
    depends_on:
      - prisma-generate
    failure: fail # STRICT: Block on type errors

  # ======================
  # PHASE 4: QA
  # ======================
  test-unit:
    image: *node_image
    environment:
      SKIP_ENV_VALIDATION: "true"
    commands:
      - *use_deps
      - echo "=== Unit Tests ==="
      - pnpm test
    depends_on:
      - prisma-generate
    failure: fail # STRICT: Block on test failures

  test-coverage:
    image: *node_image
    environment:
      SKIP_ENV_VALIDATION: "true"
    commands:
      - *use_deps
      - echo "=== Test Coverage Check ==="
      - |
        pnpm test:coverage --reporter=json --reporter=text > coverage-output.txt 2>&1 || true
        cat coverage-output.txt
        # TODO: Parse coverage report and enforce ≥85% threshold
        echo "⚠️  Coverage enforcement not yet implemented"
    depends_on:
      - prisma-generate
    when:
      - event: pull_request
    failure: ignore # TODO: Change to 'fail' after implementing coverage parser

  # ======================
  # PHASE 5: Build Verification
  # ======================
  build:
    image: *node_image
    environment:
      SKIP_ENV_VALIDATION: "true"
      NODE_ENV: "production"
    commands:
      - *use_deps
      - echo "=== Production Build ==="
      - pnpm build
    depends_on:
      - typecheck
      - security-audit-deps
      - prisma-generate
    failure: fail # STRICT: Block on build failures

  # ======================
  # PHASE 6: Auto-Merge (PR only)
  # ======================
  pr-auto-merge:
    image: alpine:latest
    secrets:
      - gitea_token
    commands:
      - echo "=== PR Auto-Merge Check ==="
      - apk add --no-cache curl jq
      - |
        # Only run for PRs targeting develop
        if [ "$CI_PIPELINE_EVENT" != "pull_request" ]; then
          echo "⏭️  Skipping: Not a pull request"
          exit 0
        fi

        # Extract PR number from CI environment
        PR_NUMBER=$(echo "$CI_COMMIT_REF" | grep -oP 'pull/\K\d+' || echo "")
        if [ -z "$PR_NUMBER" ]; then
          echo "⏭️  Skipping: Cannot determine PR number"
          exit 0
        fi

        echo "📋 Checking PR #$PR_NUMBER for auto-merge eligibility..."

        # Get PR details
        PR_DATA=$(curl -s -H "Authorization: token $GITEA_TOKEN" \
          "https://git.mosaicstack.dev/api/v1/repos/mosaic/stack/pulls/$PR_NUMBER")

        # Check if PR is mergeable
        IS_MERGEABLE=$(echo "$PR_DATA" | jq -r '.mergeable // false')
        BASE_BRANCH=$(echo "$PR_DATA" | jq -r '.base.ref // ""')
        PR_STATE=$(echo "$PR_DATA" | jq -r '.state // ""')

        if [ "$PR_STATE" != "open" ]; then
          echo "⏭️  Skipping: PR is not open (state: $PR_STATE)"
          exit 0
        fi

        if [ "$BASE_BRANCH" != "develop" ]; then
          echo "⏭️  Skipping: PR does not target develop (targets: $BASE_BRANCH)"
          exit 0
        fi

        if [ "$IS_MERGEABLE" != "true" ]; then
          echo "❌ PR is not mergeable (conflicts or other issues)"
          exit 0
        fi

        # All checks passed - merge the PR
        echo "✅ All quality gates passed - attempting auto-merge..."
        MERGE_RESULT=$(curl -s -X POST \
          -H "Authorization: token $GITEA_TOKEN" \
          -H "Content-Type: application/json" \
          -d '{"Do":"merge","MergeMessageField":"","MergeTitleField":"","delete_branch_after_merge":true,"force_merge":false,"merge_when_checks_succeed":false}' \
          "https://git.mosaicstack.dev/api/v1/repos/mosaic/stack/pulls/$PR_NUMBER/merge")

        if echo "$MERGE_RESULT" | jq -e '.merged' > /dev/null 2>&1; then
          echo "🎉 PR #$PR_NUMBER successfully merged to develop!"
        else
          ERROR_MSG=$(echo "$MERGE_RESULT" | jq -r '.message // "Unknown error"')
          echo "❌ Failed to merge PR: $ERROR_MSG"
          exit 1
        fi
    depends_on:
      - build
      - test-unit
      - lint
      - typecheck
      - security-audit-deps
    when:
      - event: pull_request
        evaluate: 'CI_COMMIT_TARGET_BRANCH == "develop"'
    failure: ignore # Don't fail pipeline if auto-merge fails

  # ======================
  # PHASE 7: Docker Build & Push (develop/main only)
  # ======================
  docker-build-api:
    image: gcr.io/kaniko-project/executor:debug
    environment:
      GITEA_USER:
        from_secret: gitea_username
      GITEA_TOKEN:
        from_secret: gitea_token
      CI_COMMIT_BRANCH: ${CI_COMMIT_BRANCH}
      CI_COMMIT_TAG: ${CI_COMMIT_TAG}
      CI_COMMIT_SHA: ${CI_COMMIT_SHA}
    commands:
      - *kaniko_setup
      - |
        DESTINATIONS="--destination git.mosaicstack.dev/mosaic/api:${CI_COMMIT_SHA:0:8}"
        if [ "$CI_COMMIT_BRANCH" = "main" ]; then
          DESTINATIONS="$DESTINATIONS --destination git.mosaicstack.dev/mosaic/api:latest"
        elif [ "$CI_COMMIT_BRANCH" = "develop" ]; then
          DESTINATIONS="$DESTINATIONS --destination git.mosaicstack.dev/mosaic/api:dev"
        fi
        if [ -n "$CI_COMMIT_TAG" ]; then
          DESTINATIONS="$DESTINATIONS --destination git.mosaicstack.dev/mosaic/api:$CI_COMMIT_TAG"
        fi
        /kaniko/executor --context . --dockerfile apps/api/Dockerfile $DESTINATIONS
    when:
      - branch: [main, develop]
        event: [push, manual, tag]
    depends_on:
      - build

  docker-build-web:
    image: gcr.io/kaniko-project/executor:debug
    environment:
      GITEA_USER:
        from_secret: gitea_username
      GITEA_TOKEN:
        from_secret: gitea_token
      CI_COMMIT_BRANCH: ${CI_COMMIT_BRANCH}
      CI_COMMIT_TAG: ${CI_COMMIT_TAG}
      CI_COMMIT_SHA: ${CI_COMMIT_SHA}
    commands:
      - *kaniko_setup
      - |
        DESTINATIONS="--destination git.mosaicstack.dev/mosaic/web:${CI_COMMIT_SHA:0:8}"
        if [ "$CI_COMMIT_BRANCH" = "main" ]; then
          DESTINATIONS="$DESTINATIONS --destination git.mosaicstack.dev/mosaic/web:latest"
        elif [ "$CI_COMMIT_BRANCH" = "develop" ]; then
          DESTINATIONS="$DESTINATIONS --destination git.mosaicstack.dev/mosaic/web:dev"
        fi
        if [ -n "$CI_COMMIT_TAG" ]; then
          DESTINATIONS="$DESTINATIONS --destination git.mosaicstack.dev/mosaic/web:$CI_COMMIT_TAG"
        fi
        /kaniko/executor --context . --dockerfile apps/web/Dockerfile --build-arg NEXT_PUBLIC_API_URL=https://api.mosaicstack.dev $DESTINATIONS
    when:
      - branch: [main, develop]
        event: [push, manual, tag]
    depends_on:
      - build

  docker-build-postgres:
    image: gcr.io/kaniko-project/executor:debug
    environment:
      GITEA_USER:
        from_secret: gitea_username
      GITEA_TOKEN:
        from_secret: gitea_token
      CI_COMMIT_BRANCH: ${CI_COMMIT_BRANCH}
      CI_COMMIT_TAG: ${CI_COMMIT_TAG}
      CI_COMMIT_SHA: ${CI_COMMIT_SHA}
    commands:
      - *kaniko_setup
      - |
        DESTINATIONS="--destination git.mosaicstack.dev/mosaic/postgres:${CI_COMMIT_SHA:0:8}"
        if [ "$CI_COMMIT_BRANCH" = "main" ]; then
          DESTINATIONS="$DESTINATIONS --destination git.mosaicstack.dev/mosaic/postgres:latest"
        elif [ "$CI_COMMIT_BRANCH" = "develop" ]; then
          DESTINATIONS="$DESTINATIONS --destination git.mosaicstack.dev/mosaic/postgres:dev"
        fi
        if [ -n "$CI_COMMIT_TAG" ]; then
          DESTINATIONS="$DESTINATIONS --destination git.mosaicstack.dev/mosaic/postgres:$CI_COMMIT_TAG"
        fi
        /kaniko/executor --context docker/postgres --dockerfile docker/postgres/Dockerfile $DESTINATIONS
    when:
      - branch: [main, develop]
        event: [push, manual, tag]
    depends_on:
      - build