#!/bin/bash
#
# Setup Python environments for OrbiQuant IA Trading Platform
# Creates conda environments for all Python services
#
# Usage: ./scripts/setup-python-envs.sh [service_name]
#   service_name: data-service, ml-engine, llm-agent, or 'all' (default)
#

set -e  # Exit on error

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

# Configuration
CONDA_PATH="${HOME}/miniconda3/bin/conda"
PROJECT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
APPS_DIR="${PROJECT_ROOT}/apps"

# Service definitions
SERVICES=("data-service" "ml-engine" "llm-agent")

# Functions
print_info() {
    echo -e "${BLUE}[INFO]${NC} $1"
}

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

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

print_error() {
    echo -e "${RED}[ERROR]${NC} $1"
}

check_conda() {
    print_info "Checking conda installation..."
    if [ ! -f "${CONDA_PATH}" ]; then
        print_error "Conda not found at ${CONDA_PATH}"
        print_error "Please install Miniconda first: https://docs.conda.io/en/latest/miniconda.html"
        exit 1
    fi
    print_success "Conda found at ${CONDA_PATH}"
    ${CONDA_PATH} --version
}

setup_service() {
    local service=$1
    local service_dir="${APPS_DIR}/${service}"
    local env_file="${service_dir}/environment.yml"

    print_info "================================================"
    print_info "Setting up environment for: ${service}"
    print_info "================================================"

    # Check if environment.yml exists
    if [ ! -f "${env_file}" ]; then
        print_error "Environment file not found: ${env_file}"
        return 1
    fi

    # Get environment name from environment.yml
    local env_name=$(grep "^name:" "${env_file}" | awk '{print $2}')

    print_info "Environment name: ${env_name}"

    # Check if environment already exists
    if ${CONDA_PATH} env list | grep -q "^${env_name} "; then
        print_warning "Environment '${env_name}' already exists"
        read -p "Do you want to remove and recreate it? (y/N): " -n 1 -r
        echo
        if [[ $REPLY =~ ^[Yy]$ ]]; then
            print_info "Removing existing environment..."
            ${CONDA_PATH} env remove -n "${env_name}" -y
        else
            print_info "Skipping ${service}"
            return 0
        fi
    fi

    # Create conda environment
    print_info "Creating conda environment from ${env_file}..."
    ${CONDA_PATH} env create -f "${env_file}"

    print_success "Environment '${env_name}' created successfully!"

    # Print activation instructions
    print_info ""
    print_info "To activate this environment, run:"
    print_info "  conda activate ${env_name}"
    print_info ""
}

verify_environment() {
    local service=$1
    local service_dir="${APPS_DIR}/${service}"
    local env_file="${service_dir}/environment.yml"

    if [ ! -f "${env_file}" ]; then
        print_warning "Skipping verification for ${service}: environment.yml not found"
        return 1
    fi

    local env_name=$(grep "^name:" "${env_file}" | awk '{print $2}')

    if ${CONDA_PATH} env list | grep -q "^${env_name} "; then
        print_success "${service}: Environment '${env_name}' exists"
        return 0
    else
        print_error "${service}: Environment '${env_name}' not found"
        return 1
    fi
}

show_usage() {
    echo "Usage: $0 [service_name]"
    echo ""
    echo "Arguments:"
    echo "  service_name    Name of the service to setup (data-service, ml-engine, llm-agent)"
    echo "                  Use 'all' to setup all services (default)"
    echo ""
    echo "Examples:"
    echo "  $0              # Setup all services"
    echo "  $0 all          # Setup all services"
    echo "  $0 ml-engine    # Setup only ml-engine"
    echo ""
}

# Main execution
main() {
    local target_service="${1:-all}"

    print_info "OrbiQuant IA - Python Environment Setup"
    print_info "Project root: ${PROJECT_ROOT}"
    print_info ""

    # Check conda installation
    check_conda
    echo ""

    # Setup services
    if [ "${target_service}" = "all" ]; then
        print_info "Setting up all Python services..."
        echo ""

        for service in "${SERVICES[@]}"; do
            setup_service "${service}"
            echo ""
        done

        # Verify all environments
        print_info "================================================"
        print_info "Verifying installed environments..."
        print_info "================================================"

        for service in "${SERVICES[@]}"; do
            verify_environment "${service}"
        done

    elif [[ " ${SERVICES[@]} " =~ " ${target_service} " ]]; then
        setup_service "${target_service}"
        verify_environment "${target_service}"

    else
        print_error "Unknown service: ${target_service}"
        show_usage
        exit 1
    fi

    echo ""
    print_success "Setup complete!"
    print_info ""
    print_info "Next steps:"
    print_info "1. Activate the environment: conda activate orbiquant-<service-name>"
    print_info "2. Copy .env.example to .env and configure your settings"
    print_info "3. Run the service: python -m src.main"
    print_info ""
    print_info "Available environments:"
    ${CONDA_PATH} env list | grep orbiquant || true
}

# Run main function
main "$@"