#!/usr/bin/env bash
#
# Docker Compose Startup Script for API Gateway
#
# Usage: ./deploy/deploy.sh [OPTIONS]
#
# Options:
#   --detach, -d          Run in detached mode
#   --down                Stop and remove containers
#   --logs                Show logs
#   --help, -h            Show this help message
#
# Required: Set GATEWAY_API_TOKEN in deploy/.env file.

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

# Load .env file
if [[ -f "$SCRIPT_DIR/.env" ]]; then
    echo "Loading environment from: $SCRIPT_DIR/.env"
    set -a
    source "$SCRIPT_DIR/.env"
    set +a
fi

DETACH=""
ACTION="up"

show_help() {
    sed -n '2,15p' "$0" | sed 's/^# //' | sed 's/^#//'
    exit 0
}

check_required_var() {
    local var_name="$1"
    if [[ -z "${!var_name:-}" ]]; then
        echo "ERROR: Required environment variable $var_name is not set"
        echo "Set it in deploy/.env file or export it before running this script"
        exit 1
    fi
}

# Parse arguments
while [[ $# -gt 0 ]]; do
    case $1 in
        --detach|-d)
            DETACH="-d"
            shift
            ;;
        --down)
            ACTION="down"
            shift
            ;;
        --logs)
            ACTION="logs"
            shift
            ;;
        --help|-h)
            show_help
            ;;
        *)
            echo "Unknown option: $1"
            echo "Use --help for usage information"
            exit 1
            ;;
    esac
done

# Fail-fast required vars
check_required_var "GATEWAY_API_TOKEN"

cd "$SCRIPT_DIR"

case $ACTION in
    up)
        echo "Starting API Gateway on port 11000"
        echo "  Routes: /llm/ /audio/ /web/ /catalog/ /health"
        echo ""
        # shellcheck disable=SC2086
        exec docker compose up $DETACH
        ;;
    down)
        echo "Stopping API Gateway..."
        exec docker compose down
        ;;
    logs)
        exec docker compose logs -f
        ;;
esac