#!/bin/bash

# Exit on errors
set -e

# Variables
USER_HOME="/data"
SITE_NAME="stg-jekyll"
BARE_REPO="$USER_HOME/repos/$SITE_NAME.git"
SITE_DIR="$USER_HOME/sites/$SITE_NAME"
PUBLIC_DIR="$SITE_DIR/html"
DOMAIN="sanderstechnologygroup.com"
NGINX_CONF="/etc/nginx/sites-available/$DOMAIN.conf"

# Update and install dependencies
sudo apt update
sudo apt install -y ruby-full build-essential zlib1g-dev git nginx

# Setup Ruby environment in .bashrc if not already present
if ! grep -q 'export GEM_HOME' "$USER_HOME/.bashrc"; then
  echo 'export GEM_HOME="$HOME/gems"' >> "$USER_HOME/.bashrc"
  echo 'export PATH="$HOME/gems/bin:$PATH"' >> "$USER_HOME/.bashrc"
fi

# Load environment
export GEM_HOME="$USER_HOME/gems"
export PATH="$USER_HOME/gems/bin:$PATH"

# Install Jekyll and Bundler
gem install jekyll bundler

# Create directories
mkdir -p "$BARE_REPO" "$SITE_DIR" "$PUBLIC_DIR"

# Setup Git bare repo
cd "$BARE_REPO"
git init --bare

# Create post-receive hook
cat > hooks/post-receive <<EOF
#!/bin/bash
TARGET_DIR="$SITE_DIR"
PUBLIC_DIR="$PUBLIC_DIR"

export GEM_HOME="$USER_HOME/gems"
export PATH="$USER_HOME/gems/bin:$PATH"

GIT_WORK_TREE="\$TARGET_DIR" git checkout -f

cd "\$TARGET_DIR"
bundle install --path vendor/bundle
bundle exec jekyll build -d "\$PUBLIC_DIR"
EOF

chmod +x hooks/post-receive

# Adjust permissions for NGINX access
chmod o+x "$USER_HOME"
chmod -R o+rX "$PUBLIC_DIR"

# Create NGINX config
sudo tee "$NGINX_CONF" > /dev/null <<EOF
server {
    listen 80;
    server_name $DOMAIN;

    root $PUBLIC_DIR;
    index index.html;

    location / {
        try_files \$uri \$uri.html \$uri/ =404;
    }
}
EOF

# Enable NGINX site
sudo ln -s "$NGINX_CONF" /etc/nginx/sites-enabled/

# Test and reload NGINX
sudo nginx -t && sudo systemctl reload nginx

echo "✅ Jekyll site deployment setup complete."
echo "➡️  Push your site with: git remote add live ssh://ben@64.42.180.156/$BARE_REPO && git push live master"