#!/bin/bash
set -euo pipefail

if [ -z "${1:-}" ]; then
    echo "Usage: ./scripts/new-app.sh <app-name>"
    echo "Example: ./scripts/new-app.sh my-blog"
    exit 1
fi

APP="$1"

if ! [[ "$APP" =~ ^[a-zA-Z0-9][a-zA-Z0-9._-]*$ ]]; then
    echo "Error: app name must be alphanumeric (hyphens, dots, underscores allowed)."
    exit 1
fi

REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"

if [ -d "$REPO_ROOT/docker/$APP" ]; then
    echo "Error: docker/$APP already exists."
    exit 1
fi

echo "Creating docker/$APP/compose.yml..."
mkdir -p "$REPO_ROOT/docker/$APP"
cat > "$REPO_ROOT/docker/$APP/compose.yml" <<EOF
services:
  app:
    image: git.timothykim.net/hantim/$APP:latest
    restart: unless-stopped
    networks:
      - shared

networks:
  shared:
    external: true
EOF

echo "Creating .gitea/workflows/deploy-$APP.yml..."
mkdir -p "$REPO_ROOT/.gitea/workflows"
cat > "$REPO_ROOT/.gitea/workflows/deploy-$APP.yml" <<'OUTER'
name: Deploy APP_PLACEHOLDER

on:
  push:
    branches: [main]
    paths:
      - 'docker/APP_PLACEHOLDER/**'

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - name: Deploy via SSH
        run: |
          mkdir -p ~/.ssh
          echo "${{ secrets.DEPLOY_SSH_KEY }}" > ~/.ssh/deploy_key
          chmod 600 ~/.ssh/deploy_key
          ssh -o StrictHostKeyChecking=accept-new -i ~/.ssh/deploy_key deploy@${{ secrets.DEPLOY_HOST }} deploy-APP_PLACEHOLDER
OUTER
sed -i "s/APP_PLACEHOLDER/$APP/g" "$REPO_ROOT/.gitea/workflows/deploy-$APP.yml"

echo ""
echo "Done! Files created:"
echo "  - docker/$APP/compose.yml"
echo "  - .gitea/workflows/deploy-$APP.yml"
echo ""
echo "Next steps:"
echo "  1. Edit docker/$APP/compose.yml to fit your app"
echo "  2. Commit and push to deploy"
echo "  3. Configure the proxy host in Nginx Proxy Manager"