# GitLab CI Configuration for satware.ai MkDocs Material Site
# Migrated from GitHub Actions with preview deployment support

stages:
  - build
  - deploy
  - cleanup

variables:
  # Python and dependency versions (matching GitHub Actions exactly)
  PYTHON_VERSION: "3.13"
  MKDOCS_MATERIAL_VERSION: "9.6.14"
  
  # Site configuration
  PRODUCTION_URL: "https://satware.ai"
  PREVIEW_BASE_URL: "https://satware.ai"

# 🔧 Build Job Template (shared between production and preview)
.build_template:
  image: python:${PYTHON_VERSION}-slim
  cache:
    key: ${CI_COMMIT_REF_SLUG}
    paths:
      - .cache/
      - venv/
  before_script:
    # Install system dependencies for MkDocs Material
    - apt-get update && apt-get install -y 
        build-essential 
        git 
        libcairo2-dev 
        libfreetype6-dev 
        libffi-dev 
        libjpeg-dev 
        libpng-dev 
        libz-dev
    
    # Setup Python virtual environment
    - python -m venv venv
    - source venv/bin/activate
    - pip install --upgrade pip
    
    # Install exact same dependencies as GitHub Actions
    - pip install 
        cairosvg 
        libsass 
        mkdocs-exclude 
        mkdocs-git-revision-date-localized-plugin 
        mkdocs-glightbox 
        mkdocs-include-markdown-plugin 
        mkdocs-literate-nav 
        mkdocs-macros-plugin 
        mkdocs-material==${MKDOCS_MATERIAL_VERSION}
        "mkdocs-material[imaging]" 
        mkdocs-minify-plugin 
        mkdocs-redirects 
        mkdocs-rss-plugin 
        mkdocs-snippets 
        mkdocs-video 
        watchdog

# 🌐 Production Deployment (main branch -> https://satware.ai)
pages:
  extends: .build_template
  stage: deploy
  rules:
    - if: $CI_COMMIT_REF_NAME == "main-mkdocs"
    - if: $CI_COMMIT_REF_NAME == "main"
  script:
    - source venv/bin/activate
    
    # Build custom CSS from SCSS (exactly like GitHub Actions)
    - mkdir -p docs/assets/css
    - pysassc overrides/assets/css/custom.scss docs/assets/css/custom.css
    
    # Production deployment - keep original site_url
    - echo "📍 Production deployment to ${PRODUCTION_URL}"
    - echo "Site URL:" $(grep '^site_url:' mkdocs.yml)
    
    # Build the static site
    - echo "🏗️ Building MkDocs site..."
    - mkdocs build --verbose
    
    # Prepare for GitLab Pages (requires 'public' directory)
    - echo "📦 Preparing production deployment..."
    - mv site public
    
    # Generate deployment info
    - echo "DEPLOYMENT_URL=${PRODUCTION_URL}" > deploy.env
    - echo "DEPLOYMENT_TYPE=production" >> deploy.env
    - echo "BRANCH=${CI_COMMIT_REF_NAME}" >> deploy.env
    - echo "COMMIT=${CI_COMMIT_SHA}" >> deploy.env
    
    # Deployment summary
    - echo "🚀 Production deployment ready:"
    - echo "   📍 URL:" ${PRODUCTION_URL}
    - echo "   🌿 Branch:" ${CI_COMMIT_REF_NAME}
    - echo "   📦 Files:" $(find public -type f | wc -l)
    - echo "   💾 Size:" $(du -sh public | cut -f1)

  artifacts:
    paths:
      - public
    reports:
      dotenv: deploy.env
  environment:
    name: production
    url: ${PRODUCTION_URL}

# 🔍 Preview Deployment (feature branches -> https://satware.ai/feature/xyz)
preview:
  extends: .build_template
  stage: deploy
  rules:
    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
    - if: $CI_COMMIT_REF_NAME =~ /^(feature|fix|blog|test|preview)\/.*/
    - if: $CI_COMMIT_REF_NAME =~ /^(develop|staging)$/
  script:
    - source venv/bin/activate
    
    # Build custom CSS from SCSS
    - mkdir -p docs/assets/css
    - pysassc overrides/assets/css/custom.scss docs/assets/css/custom.css
    
    # Configure site_url for preview deployment
    - echo "🔍 Preview deployment for branch:" ${CI_COMMIT_REF_NAME}
    # Extract clean branch name for URL path
    - BRANCH_PATH=$(echo "${CI_COMMIT_REF_NAME}" | sed 's|feature/||g' | sed 's|fix/||g' | sed 's|blog/||g' | sed 's|[^a-zA-Z0-9-]|-|g' | tr '[:upper:]' '[:lower:]')
    - PREVIEW_URL="${PREVIEW_BASE_URL}/${BRANCH_PATH}/"
    
    - echo "📝 Updating site_url to:" ${PREVIEW_URL}
    # Update site_url for preview deployment
    - |
      if grep -q "^site_url:" mkdocs.yml; then
        sed -i "s|^site_url:.*|site_url: ${PREVIEW_URL}|" mkdocs.yml
      else
        echo "site_url: ${PREVIEW_URL}" >> mkdocs.yml
      fi
    
    # Also update use_directory_urls for better preview navigation
    - |
      if grep -q "^use_directory_urls:" mkdocs.yml; then
        sed -i "s|^use_directory_urls:.*|use_directory_urls: true|" mkdocs.yml
      fi
    
    - echo "✅ Updated mkdocs.yml for preview:"
    - grep -E "^(site_url|use_directory_urls):" mkdocs.yml
    
    # Build the static site
    - echo "🏗️ Building MkDocs site..."
    - mkdocs build --verbose
    
    # For preview, create a deployable artifact
    - mkdir -p preview-deploy/${BRANCH_PATH}
    - cp -r site/* preview-deploy/${BRANCH_PATH}/
    
    # Generate deployment info
    - echo "DEPLOYMENT_URL=${PREVIEW_URL}" > deploy.env
    - echo "DEPLOYMENT_TYPE=preview" >> deploy.env
    - echo "BRANCH=${CI_COMMIT_REF_NAME}" >> deploy.env
    - echo "BRANCH_PATH=${BRANCH_PATH}" >> deploy.env
    - echo "COMMIT=${CI_COMMIT_SHA}" >> deploy.env
    
    # Create deployment instructions
    - |
      cat > DEPLOY_INSTRUCTIONS.md << EOF
      # 🔍 Preview Deployment Instructions
      
      **Branch:** \`${CI_COMMIT_REF_NAME}\`  
      **Preview URL:** ${PREVIEW_URL}  
      **Commit:** \`${CI_COMMIT_SHA}\`  
      
      ## Manual Deployment Steps:
      
      1. Download the \`preview-deploy\` artifact from this pipeline
      2. Extract to your satware.ai server under path: \`/${BRANCH_PATH}/\`
      3. Ensure web server serves files from this location
      4. Access preview at: ${PREVIEW_URL}
      
      ## Automated Deployment (Future):
      Configure rsync/ssh to automatically deploy to your server:
      \`\`\`bash
      rsync -avz --delete preview-deploy/${BRANCH_PATH}/ user@satware.ai:/var/www/satware.ai/${BRANCH_PATH}/
      \`\`\`
      EOF
    
    # Preview summary
    - echo "🔍 Preview deployment ready:"
    - echo "   📍 URL:" ${PREVIEW_URL}
    - echo "   🌿 Branch:" ${CI_COMMIT_REF_NAME}
    - echo "   📁 Path: /${BRANCH_PATH}/"
    - echo "   📦 Files:" $(find preview-deploy -type f | wc -l)
    - echo "   💾 Size:" $(du -sh preview-deploy | cut -f1)

  artifacts:
    paths:
      - preview-deploy/
      - DEPLOY_INSTRUCTIONS.md
    expire_in: 7 days
    reports:
      dotenv: deploy.env
  environment:
    name: preview/${CI_COMMIT_REF_SLUG}
    url: ${PREVIEW_BASE_URL}/${BRANCH_PATH}/
    on_stop: cleanup_preview

# 🧹 Cleanup Preview Environments (when branch is deleted)
cleanup_preview:
  stage: cleanup
  image: alpine:latest
  rules:
    - if: $CI_COMMIT_REF_NAME =~ /^(feature|fix|blog|test|preview)\/.*/
      when: manual
      allow_failure: true
  script:
    - BRANCH_PATH=$(echo "${CI_COMMIT_REF_NAME}" | sed 's|feature/||g' | sed 's|fix/||g' | sed 's|blog/||g' | sed 's|[^a-zA-Z0-9-]|-|g' | tr '[:upper:]' '[:lower:]')
    - echo "🧹 Cleanup preview environment for ${CI_COMMIT_REF_NAME}"
    - echo "Manual cleanup required - remove files from server path: /${BRANCH_PATH}/"
    # Add your cleanup commands here, e.g.:
    # - ssh user@satware.ai "rm -rf /var/www/satware.ai/${BRANCH_PATH}/"
  environment:
    name: preview/${CI_COMMIT_REF_SLUG}
    action: stop

# 📊 Build Information Job (runs on all branches for debugging)
build_info:
  stage: build
  image: alpine:latest
  rules:
    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
    - if: $CI_COMMIT_REF_NAME =~ /.*/
  script:
    - echo "🔍 Build Information:"
    - echo "   📁 Repository:" ${CI_PROJECT_PATH}
    - echo "   🌿 Branch:" ${CI_COMMIT_REF_NAME}
    - echo "   📝 Commit:" ${CI_COMMIT_SHA:0:8}
    - echo "   👤 Author:" ${GITLAB_USER_NAME}
    - echo "   📅 Pipeline:" ${CI_PIPELINE_ID}
    - echo "   🔗 URL:" ${CI_PIPELINE_URL}
    - |
      if [ "$CI_COMMIT_REF_NAME" = "main" ] || [ "$CI_COMMIT_REF_NAME" = "main-mkdocs" ]; then
        echo "   🚀 Deployment: Production (${PRODUCTION_URL})"
      else
        BRANCH_PATH=$(echo "${CI_COMMIT_REF_NAME}" | sed 's|feature/||g' | sed 's|fix/||g' | sed 's|blog/||g' | sed 's|[^a-zA-Z0-9-]|-|g' | tr '[:upper:]' '[:lower:]')
        echo "   🔍 Deployment: Preview (${PREVIEW_BASE_URL}/${BRANCH_PATH}/)"
      fi