#!/bin/bash
# One-line web installer for Modern Dotfiles Management System
# Usage: curl -fsSL https://your-domain.com/install | bash

set -e

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

# Configuration
REPO_URL="https://github.com/your-username/dotfiles"
DOTFILES_DIR="$HOME/.dotfiles"
BRANCH="main"

# Function to print colored output
print_color() {
    local color=$1
    local message=$2
    echo -e "${color}${message}${NC}"
}

# Function to check prerequisites
check_prerequisites() {
    print_color "$BLUE" "🔍 Checking prerequisites..."
    
    # Check if git is installed
    if ! command -v git >/dev/null 2>&1; then
        print_color "$YELLOW" "⚠️  Git not found. Installing git..."
        
        # Detect OS and install git
        if command -v apt >/dev/null 2>&1; then
            sudo apt update && sudo apt install -y git
        elif command -v yum >/dev/null 2>&1; then
            sudo yum install -y git
        elif command -v dnf >/dev/null 2>&1; then
            sudo dnf install -y git
        elif command -v brew >/dev/null 2>&1; then
            brew install git
        else
            print_color "$RED" "❌ Cannot install git automatically. Please install git and try again."
            exit 1
        fi
    fi
    
    # Check if curl is installed (should be, since we're using it)
    if ! command -v curl >/dev/null 2>&1; then
        print_color "$RED" "❌ Curl is required but not found."
        exit 1
    fi
    
    print_color "$GREEN" "✅ Prerequisites satisfied"
}

# Function to backup existing dotfiles
backup_existing() {
    if [[ -d "$DOTFILES_DIR" ]]; then
        local backup_dir="${DOTFILES_DIR}_backup_$(date +%Y%m%d_%H%M%S)"
        print_color "$YELLOW" "📦 Backing up existing dotfiles to: $backup_dir"
        mv "$DOTFILES_DIR" "$backup_dir"
    fi
}

# Function to clone repository
clone_repository() {
    print_color "$BLUE" "📥 Cloning dotfiles repository..."
    
    if git clone --depth 1 -b "$BRANCH" "$REPO_URL" "$DOTFILES_DIR"; then
        print_color "$GREEN" "✅ Repository cloned successfully"
    else
        print_color "$RED" "❌ Failed to clone repository. Please check:"
        print_color "$RED" "   • Internet connection"
        print_color "$RED" "   • Repository URL: $REPO_URL"
        print_color "$RED" "   • Branch: $BRANCH"
        exit 1
    fi
}

# Function to run installation
run_installation() {
    print_color "$BLUE" "🚀 Running dotfiles installation..."
    
    cd "$DOTFILES_DIR"
    
    # Make install script executable
    chmod +x install.sh
    
    # Run the installer
    if ./install.sh; then
        print_color "$GREEN" "🎉 Installation completed successfully!"
    else
        print_color "$RED" "❌ Installation failed. Check logs in ~/.dotfiles/ for details."
        exit 1
    fi
}

# Function to show completion message
show_completion() {
    print_color "$CYAN" ""
    print_color "$CYAN" "╔══════════════════════════════════════════════════════════════╗"
    print_color "$CYAN" "║                    🎉 INSTALLATION COMPLETE! 🎉              ║"
    print_color "$CYAN" "╚══════════════════════════════════════════════════════════════╝"
    print_color "$CYAN" ""
    print_color "$GREEN" "Your intelligent dotfiles system is ready to use!"
    print_color "$CYAN" ""
    print_color "$YELLOW" "💡 Quick commands to try:"
    echo "   dotstatus        - Show sync and system status"
    echo "   dotprofile       - Show your machine profile"
    echo "   dotpkgs          - Show installed packages"
    echo "   dotupdatecheck   - Check for package updates"
    echo "   l                - Enhanced file listing"
    echo "   g                - Git shortcut"
    echo "   ..               - Go up one directory"
    print_color "$CYAN" ""
    print_color "$YELLOW" "📚 Learn more:"
    echo "   cat ~/.dotfiles/docs/README.md"
    echo "   cat ~/.dotfiles/docs/CONFIGURATION.md"
    print_color "$CYAN" ""
    print_color "$BLUE" "🔄 Restart your shell to activate all features:"
    print_color "$BLUE" "   exec \$SHELL"
    print_color "$CYAN" ""
}

# Main installation function
main() {
    print_color "$CYAN" "╔══════════════════════════════════════════════════════════════╗"
    print_color "$CYAN" "║           Modern Dotfiles Management System                  ║"
    print_color "$CYAN" "║              One-Line Web Installer                         ║"
    print_color "$CYAN" "╚══════════════════════════════════════════════════════════════╝"
    print_color "$CYAN" ""
    
    # Show what will be installed
    print_color "$BLUE" "This installer will:"
    echo "  • Clone the dotfiles repository to ~/.dotfiles"
    echo "  • Auto-detect your machine type (server/dev/personal)"
    echo "  • Install appropriate packages for your profile"
    echo "  • Set up universal aliases and shortcuts"
    echo "  • Configure automatic syncing and updates"
    print_color "$CYAN" ""
    
    # Confirm installation
    if [[ -t 0 ]]; then  # Only prompt if stdin is a terminal
        print_color "$YELLOW" "Continue with installation? [Y/n]: "
        read -r response
        case "$response" in
            [nN]|[nN][oO])
                print_color "$YELLOW" "Installation cancelled."
                exit 0
                ;;
        esac
    fi
    
    print_color "$CYAN" ""
    
    # Run installation steps
    check_prerequisites
    backup_existing
    clone_repository
    run_installation
    show_completion
}

# Error handling
trap 'print_color "$RED" "❌ Installation failed. Check the error message above."; exit 1' ERR

# Run main function
main "$@"