#!/bin/bash
# One-time server setup: create app directory and GitLab deploy key.
# Run as root on a fresh server before deploying.
#
# Usage:
#   bash infra/setup_server.sh

set -euo pipefail

APP_DIR="/opt/padelnomics"
KEY_PATH="$HOME/.ssh/padelnomics_deploy"

# Create app directory
mkdir -p "$APP_DIR"
echo "Created $APP_DIR"

# Generate deploy key if not already present
if [ ! -f "$KEY_PATH" ]; then
    mkdir -p "$HOME/.ssh"
    ssh-keygen -t ed25519 -f "$KEY_PATH" -N "" -C "padelnomics-server"
    chmod 700 "$HOME/.ssh"
    chmod 600 "$KEY_PATH"
    chmod 644 "$KEY_PATH.pub"

    # Configure SSH to use this key for gitlab.com
    if ! grep -q "# padelnomics" "$HOME/.ssh/config" 2>/dev/null; then
        cat >> "$HOME/.ssh/config" <<EOF

# padelnomics
Host gitlab.com
    IdentityFile $KEY_PATH
EOF
        chmod 600 "$HOME/.ssh/config"
    fi

    echo "Generated deploy key: $KEY_PATH"
else
    echo "Deploy key already exists, skipping"
fi

echo ""
echo "=== Next steps ==="
echo "1. Add this deploy key to GitLab (Settings → Repository → Deploy Keys, read-only):"
echo ""
cat "$KEY_PATH.pub"
echo ""
echo "2. Clone the repo:"
echo "   git clone git@gitlab.com:YOUR_USER/padelnomics.git $APP_DIR"
echo ""
echo "3. Deploy:"
echo "   cd $APP_DIR && bash deploy.sh"