#!/bin/bash

# Merge Dev to Production (Content Only)
# This script merges dev into production branch, keeping ONLY content

set -e

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

log_info() {
    echo -e "${BLUE}[INFO]${NC} $1"
}

log_success() {
    echo -e "${GREEN}[SUCCESS]${NC} $1"
}

log_warning() {
    echo -e "${YELLOW}[WARNING]${NC} $1"
}

# Verify we're on dev branch
CURRENT_BRANCH=$(git symbolic-ref --short HEAD 2>/dev/null)
if [ "$CURRENT_BRANCH" != "dev" ]; then
    echo -e "${RED}[ERROR]${NC} You must be on 'dev' branch to run this script"
    echo ""
    log_info "Switch to dev branch:"
    echo "    git checkout dev"
    exit 1
fi

# Check for uncommitted changes
if [ -n "$(git status --porcelain)" ]; then
    echo -e "${RED}[ERROR]${NC} You have uncommitted changes"
    echo ""
    git status --short
    echo ""
    log_info "Commit your changes first:"
    echo "    git add ."
    echo "    git commit -m 'message'"
    exit 1
fi

# Check if dev is ahead of origin
if git rev-list --count HEAD@{u}..HEAD | grep -q "^[1-9]"; then
    log_warning "Your dev branch is ahead of remote"
    echo ""
    log_info "Push your changes first:"
    echo "    git push origin dev"
    echo ""
    read -p "Continue anyway? (y/n): " answer
    if [ "$answer" != "y" ]; then
        exit 0
    fi
fi

# Save current dev branch hash
DEV_HASH=$(git rev-parse HEAD)

log_info "=== Merging Dev to Production (Content Only) ==="
echo ""

# Switch to production branch
log_info "Switching to production branch..."
git checkout production

# Pull latest production changes (from remote Admin UI edits)
log_info "Pulling latest production changes..."
git pull origin production

# Merge dev into production
log_info "Merging dev into production..."
git merge dev --no-edit

# Save merged hash
MERGED_HASH=$(git rev-parse HEAD)

log_info "Removing non-content files..."
log_warning "This will remove all files except content:"
echo "  ✓ Keep: user/pages/* (content)"
echo "  ✓ Keep: user/themes/* (templates, CSS, logo)"
echo "  ✓ Keep: user/plugins/* (only content-related plugins)"
echo "  ✗ Remove: user/config/* (configuration)"
echo "  ✗ Remove: user/cache/* (cache - already in .gitignore)"
echo "  ✗ Remove: user/logs/* (logs - already in .gitignore)"
echo "  ✗ Remove: user/backup/* (backups - already in .gitignore)"
echo "  ✗ Remove: *.md (documentation)"
echo "  ✗ Remove: *.sh (scripts)"
echo "  ✗ Remove: docker-compose.yml (dev config)"
echo "  ✗ Remove: config/* (nginx, php configs)"
echo "  ✗ Remove: .git/hooks/* (git hooks)"
echo ""

# Remove non-content files
log_info "Removing documentation..."
git rm -f AGENTS.md BUSINESS-RULES.md DEPLOYMENT.md GIT-SYNC.md WORKFLOW.md BRANCHES.md 2>/dev/null || true

log_info "Removing scripts..."
git rm -f sync.sh deploy-production.sh 2>/dev/null || true

log_info "Removing Docker configuration..."
git rm -f docker-compose.yml 2>/dev/null || true

log_info "Removing nginx/php configuration..."
git rm -rf config/nginx config/php 2>/dev/null || true

log_info "Removing Grav configuration (keep in dev)..."
git rm -rf config/www/user/config 2>/dev/null || true

# Remove cache, logs, backups (these are already in .gitignore but might have been committed)
log_info "Removing cache, logs, backups..."
git rm -rf config/www/user/cache config/www/user/logs config/www/user/backup 2>/dev/null || true

# Remove git hooks
log_info "Removing git hooks..."
git rm -rf .git/hooks 2>/dev/null || true

# Remove .crush directory
log_info "Removing .crush directory..."
git rm -rf .crush 2>/dev/null || true

# Remove README.md
git rm -f README.md 2>/dev/null || true

# Remove .gitignore (production doesn't need special gitignore)
git rm -f .gitignore 2>/dev/null || true

# Add minimal .gitignore for production
log_info "Creating minimal .gitignore for production..."
cat > .gitignore << 'EOF'
# Production Git Ignore
# Only cache, logs, backups are ignored (content is tracked)

user/cache/
user/logs/
user/backup/
EOF
git add .gitignore

# Create production README
log_info "Creating production README..."
cat > PRODUCTION.md << 'EOF'
# Starting Line Productions LLC - Production Website

## This Branch

This is the **production** branch containing ONLY website content:
- Pages (content)
- Themes (templates, CSS, logo)
- Plugins (content-related)

## What's NOT Here

- No configuration files (kept in dev branch)
- No development scripts
- No documentation
- No Docker configuration
- No git hooks

## Content Only

This branch is maintained automatically by:
1. Development happens on `dev` branch
2. Script merges dev to production
3. Script removes non-content files
4. Production branch contains only content

## Production Server

Production server pulls from this branch:
- Non-technical users edit content via Admin UI
- Git Sync plugin auto-commits/pushes to this branch
- Changes are automatically synced to repository

## Deployment

Production server deployment:
```bash
cd /var/www/grav
git pull origin production
```

## Questions?

Contact technical support for deployment or content changes.
EOF
git add PRODUCTION.md

# Commit the cleaned production state
log_info "Committing cleaned production state..."
git commit -m "chore: merge dev to production (content only)

From dev: $DEV_HASH
To production: $MERGED_HASH

This commit contains ONLY website content:
- Pages (user/pages/)
- Themes (user/themes/)
- Plugins (user/plugins/)

Removed from production:
- Configuration (user/config/)
- Documentation (*.md)
- Scripts (*.sh)
- Docker config (docker-compose.yml)
- Nginx/PHP config (config/nginx/, config/php/)
- Git hooks (.git/hooks/)
- README.md, .gitignore

Maintained by merge-to-production script"

# Push to remote
log_info "Pushing to production branch..."
git push origin production

# Switch back to dev
log_info "Switching back to dev branch..."
git checkout dev

log_success "=== Production Merge Complete ==="
echo ""
log_info "Production branch now contains ONLY content"
log_info "Production is ready for deployment"
echo ""
log_info "Production can be pulled on production server:"
echo "    git pull origin production"
echo ""
log_info "Next steps:"
echo "  1. Deploy to production server (if needed)"
echo "  2. Verify production website"
echo "  3. Non-technical users can edit via Admin UI"