#!/bin/bash
################################################################################
# SuperClaude Framework Installation Script
################################################################################
#
# This script installs SuperClaude Framework directly from the Git repository.
# It performs the following steps:
#   1. Checks prerequisites (Python 3.10+, UV package manager)
#   2. Installs SuperClaude package in editable mode
#   3. Installs 30 slash commands to ~/.claude/commands/
#   4. Verifies installation
#   5. Provides next steps guidance
#
# Usage:
#   ./install.sh            # Interactive installation
#   ./install.sh --yes      # Non-interactive (auto-yes to prompts)
#   ./install.sh --help     # Show help message
#
################################################################################

set -e  # Exit on error

# Color codes for output
readonly RED='\033[0;31m'
readonly GREEN='\033[0;32m'
readonly YELLOW='\033[1;33m'
readonly BLUE='\033[0;34m'
readonly CYAN='\033[0;36m'
readonly NC='\033[0m' # No Color

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

# Installation options
AUTO_YES=false

################################################################################
# Helper Functions
################################################################################

print_header() {
    printf "%b\n" "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
    printf "%b\n" "${CYAN}$1${NC}"
    printf "%b\n" "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
}

print_success() {
    printf "%b\n" "${GREEN}✅ $1${NC}"
}

print_error() {
    printf "%b\n" "${RED}❌ $1${NC}"
}

print_warning() {
    printf "%b\n" "${YELLOW}⚠️  $1${NC}"
}

print_info() {
    printf "%b\n" "${BLUE}ℹ️  $1${NC}"
}

print_step() {
    printf "%b\n" "${CYAN}🔹 $1${NC}"
}

confirm() {
    if [ "$AUTO_YES" = true ]; then
        return 0
    fi

    local prompt="$1"
    local default="${2:-y}"

    if [ "$default" = "y" ]; then
        prompt="$prompt [Y/n]: "
    else
        prompt="$prompt [y/N]: "
    fi

    read -p "$prompt" -r response
    response=${response:-$default}

    if [[ "$response" =~ ^[Yy]$ ]]; then
        return 0
    else
        return 1
    fi
}

################################################################################
# Prerequisite Checks
################################################################################

check_python() {
    print_step "Checking Python installation..."

    if ! command -v python3 &> /dev/null; then
        print_error "Python 3 is not installed"
        print_info "Please install Python 3.10 or higher from https://www.python.org/"
        exit 1
    fi

    local python_version=$(python3 --version 2>&1 | awk '{print $2}')
    local major_version=$(echo "$python_version" | cut -d. -f1)
    local minor_version=$(echo "$python_version" | cut -d. -f2)

    if [ "$major_version" -lt 3 ] || ([ "$major_version" -eq 3 ] && [ "$minor_version" -lt 10 ]); then
        print_error "Python $python_version found, but Python 3.10+ is required"
        print_info "Please upgrade Python from https://www.python.org/"
        exit 1
    fi

    print_success "Python $python_version found"
}

check_git() {
    print_step "Checking Git installation..."

    if ! command -v git &> /dev/null; then
        print_warning "Git is not installed"
        print_info "Git is recommended for development. Install from https://git-scm.com/"
    else
        local git_version=$(git --version 2>&1 | awk '{print $3}')
        print_success "Git $git_version found"
    fi
}

check_uv() {
    print_step "Checking UV package manager..."

    if ! command -v uv &> /dev/null; then
        print_warning "UV package manager is not installed"
        return 1
    else
        local uv_version=$(uv --version 2>&1 | awk '{print $2}')
        print_success "UV $uv_version found"
        return 0
    fi
}

install_uv() {
    print_step "Installing UV package manager..."

    if ! confirm "Would you like to install UV now?"; then
        print_error "UV is required for SuperClaude installation"
        print_info "You can install UV manually: curl -LsSf https://astral.sh/uv/install.sh | sh"
        exit 1
    fi

    print_info "Installing UV (this may take a moment)..."
    if curl -LsSf https://astral.sh/uv/install.sh | sh; then
        print_success "UV installed successfully"

        # Add UV to PATH for current session
        export PATH="$HOME/.cargo/bin:$PATH"

        # Verify UV is now available
        if ! command -v uv &> /dev/null; then
            print_warning "UV installed but not in PATH"
            print_info "Please restart your terminal or run: source ~/.bashrc (or ~/.zshrc)"
            print_info "Then run this script again"
            exit 1
        fi
    else
        print_error "Failed to install UV"
        print_info "Please install UV manually: https://github.com/astral-sh/uv"
        exit 1
    fi
}

################################################################################
# Installation Functions
################################################################################

install_package() {
    print_step "Installing SuperClaude package..."

    cd "$PROJECT_ROOT"

    # Check if pyproject.toml exists
    if [ ! -f "pyproject.toml" ]; then
        print_error "pyproject.toml not found in $PROJECT_ROOT"
        print_info "Are you running this script from the SuperClaude repository root?"
        exit 1
    fi

    # Install in editable mode with dev dependencies
    print_info "Running: uv pip install -e \".[dev]\""
    if uv pip install -e ".[dev]"; then
        print_success "SuperClaude package installed successfully"
    else
        print_error "Failed to install SuperClaude package"
        print_info "Try running manually: uv pip install -e \".[dev]\""
        exit 1
    fi
}

install_commands() {
    print_step "Installing slash commands..."

    # Check if superclaude command is available
    if ! command -v superclaude &> /dev/null; then
        print_error "superclaude command not found"
        print_info "Package installation may have failed"
        exit 1
    fi

    print_info "Installing 30 slash commands to ~/.claude/commands/sc/"
    if superclaude install; then
        print_success "Slash commands installed successfully"
    else
        print_error "Failed to install slash commands"
        print_info "Try running manually: superclaude install"
        exit 1
    fi
}

verify_installation() {
    print_step "Verifying installation..."

    # Check package version
    local version=$(superclaude --version 2>&1)
    print_info "Installed version: $version"

    # Run doctor command
    print_info "Running health check..."
    if superclaude doctor; then
        print_success "Installation verified successfully"
    else
        print_warning "Health check completed with warnings"
        print_info "You can run 'superclaude doctor' anytime to check status"
    fi

    # List installed commands
    print_info "Installed commands:"
    superclaude install --list | head -n 10
    echo "   ... and more (30 commands total)"
}

################################################################################
# Main Installation Flow
################################################################################

show_help() {
    cat << EOF
SuperClaude Framework Installation Script

Usage:
    ./install.sh [OPTIONS]

Options:
    --yes       Non-interactive mode (auto-yes to all prompts)
    --help      Show this help message

Description:
    Installs SuperClaude Framework directly from the Git repository.
    Performs installation in editable/development mode with all features.

Requirements:
    - Python 3.10 or higher
    - UV package manager (will be installed if missing)

Examples:
    ./install.sh              # Interactive installation
    ./install.sh --yes        # Non-interactive installation

For more information:
    https://github.com/SuperClaude-Org/SuperClaude_Framework
EOF
    exit 0
}

parse_args() {
    while [[ $# -gt 0 ]]; do
        case $1 in
            --yes|-y)
                AUTO_YES=true
                shift
                ;;
            --help|-h)
                show_help
                ;;
            *)
                print_error "Unknown option: $1"
                echo "Run './install.sh --help' for usage information"
                exit 1
                ;;
        esac
    done
}

main() {
    # Parse command line arguments
    parse_args "$@"

    # Print header
    clear
    print_header "🚀 SuperClaude Framework Installation"
    echo ""
    print_info "This script will install SuperClaude Framework in development mode"
    print_info "Installation location: $PROJECT_ROOT"
    echo ""

    if [ "$AUTO_YES" != true ]; then
        if ! confirm "Continue with installation?"; then
            print_info "Installation cancelled"
            exit 0
        fi
        echo ""
    fi

    # Phase 1: Check prerequisites
    print_header "📋 Phase 1: Checking Prerequisites"
    check_python
    check_git
    if ! check_uv; then
        install_uv
    fi
    echo ""

    # Phase 2: Install package
    print_header "📦 Phase 2: Installing SuperClaude Package"
    install_package
    echo ""

    # Phase 3: Install commands
    print_header "⚙️  Phase 3: Installing Slash Commands"
    install_commands
    echo ""

    # Phase 4: Verify installation
    print_header "✅ Phase 4: Verifying Installation"
    verify_installation
    echo ""

    # Phase 5: Next steps
    print_header "🎉 Installation Complete!"
    echo ""
    print_success "SuperClaude Framework is now installed!"
    echo ""
    print_info "Next Steps:"
    echo "  1. Run health check:        superclaude doctor"
    echo "  2. View all commands:       superclaude install --list"
    echo "  3. Try a command:           /sc:help"
    echo ""
    print_info "Optional - Install MCP Servers for enhanced features:"
    echo "  • List available servers:   superclaude mcp --list"
    echo "  • Interactive installation: superclaude mcp"
    echo "  • Specific servers:         superclaude mcp --servers tavily context7"
    echo ""
    print_info "Documentation:"
    echo "  • Quick Start:  docs/getting-started/quick-start.md"
    echo "  • User Guide:   docs/user-guide/"
    echo "  • Commands:     docs/reference/commands-list.md"
    echo ""
    print_success "Happy coding with SuperClaude! 🚀"
    echo ""
}

# Run main function
main "$@"