#!/usr/bin/env bash
################################################################################
# Claude Code Customizations - Interactive Installer
# Step-by-step installation with user choices for each component
################################################################################

set -e

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
CYAN='\033[0;36m'
BOLD='\033[1m'
NC='\033[0m'

# Configuration
CLAUDE_DIR="$HOME/.claude"
BACKUP_DIR="$HOME/.claude-backup-$(date +%Y%m%d_%H%M%S)"
SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

# User choices
USE_ZAI_MODELS=false
INSTALL_AGENTS=true
INSTALL_ENGINEERING=true
INSTALL_MARKETING=true
INSTALL_PRODUCT=true
INSTALL_STUDIO_OPS=true
INSTALL_PROJECT_MGMT=true
INSTALL_TESTING=true
INSTALL_DESIGN=true
INSTALL_BONUS=true
INSTALL_MCP_TOOLS=true
INSTALL_VISION_TOOLS=true
INSTALL_WEB_TOOLS=true
INSTALL_GITHUB_TOOLS=true
INSTALL_PLUGINS=true
INSTALL_HOOKS=true
LAUNCH_CLAUDE=false

# Counters
SELECTED_AGENTS=0
SELECTED_MCP_TOOLS=0

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

log_info() { echo -e "${BLUE}[INFO]${NC} $1"; }
log_success() { echo -e "${GREEN}[✓]${NC} $1"; }
log_warning() { echo -e "${YELLOW}[!]${NC} $1"; }
log_error() { echo -e "${RED}[✗]${NC} $1"; }

print_header() {
    clear
    echo -e "${CYAN}╔══════════════════════════════════════════════════════════════════╗${NC}"
    echo -e "${CYAN}║${NC} ${BOLD}Claude Code Customizations - Interactive Installer${NC}         ${CYAN}║${NC}"
    echo -e "${CYAN}╚══════════════════════════════════════════════════════════════════╝${NC}"
    echo ""
}

confirm() {
    local prompt="$1"
    local default="$2"

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

    read -p "$prompt" response

    if [ -z "$response" ]; then
        if [ "$default" = "Y" ]; then
            return 0
        else
            return 1
        fi
    fi

    [[ "$response" =~ ^[Yy]$ ]]
}

select_multiple() {
    local title="$1"
    shift
    local options=("$@")

    echo ""
    echo -e "${BOLD}$title${NC}"
    echo "─────────────────────────────────────────────────────────────"
    echo ""

    local i=1
    for opt in "${options[@]}"; do
        echo "  $i) $opt"
        i=$((i+1))
    done
    echo "  a) All"
    echo "  n) None"
    echo ""

    while true; do
        read -p "Select options (comma-separated, a=n): " selection

        if [[ "$selection" =~ ^[Aa]$ ]]; then
            return 0  # All
        elif [[ "$selection" =~ ^[Nn]$ ]]; then
            return 1  # None
        else
            return 0  # Has selections
        fi
    done
}

################################################################################
# Welcome Screen
################################################################################

show_welcome() {
    print_header
    echo -e "${BOLD}Welcome to Claude Code Customizations Installer!${NC}"
    echo ""
    echo "This installer will guide you through setting up a customized"
    echo "Claude Code environment with:"
    echo ""
    echo "  • 40+ specialized agents for development, marketing, and operations"
    echo "  • MCP tools for vision analysis, web search, and GitHub integration"
    echo "  • Custom skills and plugins"
    echo "  • Optimized workflows for rapid 6-day development cycles"
    echo ""
    echo -e "${YELLOW}Note:${NC} You can choose what to install at each step."
    echo ""

    if ! confirm "Continue with installation?" "Y"; then
        echo "Installation cancelled."
        exit 0
    fi
}

################################################################################
# Model Selection
################################################################################

select_model() {
    print_header
    echo -e "${BOLD}Step 1: Model Selection${NC}"
    echo "═══════════════════════════════════════════════════════════"
    echo ""
    echo "Choose which API models to use with Claude Code:"
    echo ""
    echo -e "  ${GREEN}1${NC}) ${BOLD}Anthropic Claude Models${NC} (official)"
    echo "      • claude-sonnet-4.5, claude-opus-4.5, etc."
    echo "      • Direct Anthropic API"
    echo "      • Base URL: https://api.anthropic.com"
    echo ""
    echo -e "  ${CYAN}2${NC}) ${BOLD}Z.AI / GLM Coding Plan Models${NC}"
    echo "      • Same Claude models via Z.AI platform"
    echo "      • Additional features: usage tracking, feedback, promotions"
    echo "      • Base URL: https://api.z.ai/api/anthropic"
    echo "      • Includes: 旺仔牛奶 rewards program"
    echo ""
    read -p "Select model provider [1/2]: " model_choice

    case $model_choice in
        2)
            USE_ZAI_MODELS=true
            log_success "Selected: Z.AI / GLM Coding Plan Models"
            ;;
        *)
            USE_ZAI_MODELS=false
            log_success "Selected: Anthropic Claude Models (official)"
            ;;
    esac

    echo ""
}

################################################################################
# Agent Selection
################################################################################

select_agents() {
    print_header
    echo -e "${BOLD}Step 2: Agent Categories${NC}"
    echo "═══════════════════════════════════════════════════════════"
    echo ""
    echo "Custom agents provide specialized assistance for different tasks."
    echo "Select which categories to install:"
    echo ""

    if confirm "Install Engineering agents? (AI engineer, frontend/backend dev, DevOps, mobile, rapid prototyper, test writer)" "Y"; then
        INSTALL_ENGINEERING=true
        SELECTED_AGENTS=$((SELECTED_AGENTS + 7))
    else
        INSTALL_ENGINEERING=false
    fi

    if confirm "Install Marketing agents? (TikTok strategist, growth hacker, content creator, Instagram/Reddit/Twitter)" "Y"; then
        INSTALL_MARKETING=true
        SELECTED_AGENTS=$((SELECTED_AGENTS + 7))
    else
        INSTALL_MARKETING=false
    fi

    if confirm "Install Product agents? (Sprint prioritizer, feedback synthesizer, trend researcher)" "Y"; then
        INSTALL_PRODUCT=true
        SELECTED_AGENTS=$((SELECTED_AGENTS + 3))
    else
        INSTALL_PRODUCT=false
    fi

    if confirm "Install Studio Operations agents? (Studio producer, project shipper, analytics, finance, legal, support, coach)" "Y"; then
        INSTALL_STUDIO_OPS=true
        SELECTED_AGENTS=$((SELECTED_AGENTS + 8))
    else
        INSTALL_STUDIO_OPS=false
    fi

    if confirm "Install Project Management agents? (Experiment tracker, studio producer, project shipper)" "Y"; then
        INSTALL_PROJECT_MGMT=true
        SELECTED_AGENTS=$((SELECTED_AGENTS + 3))
    else
        INSTALL_PROJECT_MGMT=false
    fi

    if confirm "Install Testing agents? (Test writer/fixer, API tester, performance benchmarker, workflow optimizer)" "Y"; then
        INSTALL_TESTING=true
        SELECTED_AGENTS=$((SELECTED_AGENTS + 5))
    else
        INSTALL_TESTING=false
    fi

    if confirm "Install Design agents? (UI/UX designer, brand guardian, visual storyteller, whimsy injector)" "Y"; then
        INSTALL_DESIGN=true
        SELECTED_AGENTS=$((SELECTED_AGENTS + 5))
    else
        INSTALL_DESIGN=false
    fi

    if confirm "Install Bonus agents? (Joker, studio coach)" "Y"; then
        INSTALL_BONUS=true
        SELECTED_AGENTS=$((SELECTED_AGENTS + 2))
    else
        INSTALL_BONUS=false
    fi

    if [ $SELECTED_AGENTS -eq 0 ]; then
        log_warning "No agents selected - you can add them later manually"
    else
        log_success "Selected $SELECTED_AGENTS agents across multiple categories"
    fi

    echo ""
}

################################################################################
# MCP Tools Selection
################################################################################

select_mcp_tools() {
    print_header
    echo -e "${BOLD}Step 3: MCP Tools${NC}"
    echo "═══════════════════════════════════════════════════════════"
    echo ""
    echo "MCP (Model Context Protocol) tools provide advanced capabilities."
    echo "Select which tools to install:"
    echo ""

    if confirm "Install Vision Analysis tools? (images, videos, UI screenshots, error diagnosis, data visualization, diagrams)" "Y"; then
        INSTALL_VISION_TOOLS=true
        SELECTED_MCP_TOOLS=$((SELECTED_MCP_TOOLS + 8))
    else
        INSTALL_VISION_TOOLS=false
    fi

    if confirm "Install Web Search tool? (enhanced search with domain filtering, time-based results)" "Y"; then
        INSTALL_WEB_TOOLS=true
        SELECTED_MCP_TOOLS=$((SELECTED_MCP_TOOLS + 1))
    else
        INSTALL_WEB_TOOLS=false
    fi

    if confirm "Install Web Reader tool? (fetch URLs, convert to markdown)" "Y"; then
        INSTALL_WEB_TOOLS=true
        SELECTED_MCP_TOOLS=$((SELECTED_MCP_TOOLS + 1))
    fi

    if confirm "Install GitHub Reader tool? (read repos, search docs/issues/commits)" "Y"; then
        INSTALL_GITHUB_TOOLS=true
        SELECTED_MCP_TOOLS=$((SELECTED_MCP_TOOLS + 3))
    else
        INSTALL_GITHUB_TOOLS=false
    fi

    if [ $SELECTED_MCP_TOOLS -eq 0 ]; then
        log_warning "No MCP tools selected"
    else
        log_success "Selected $SELECTED_MCP_TOOLS MCP tools"
    fi

    INSTALL_MCP_TOOLS=true
    echo ""
}

################################################################################
# Plugins Selection
################################################################################

select_plugins() {
    print_header
    echo -e "${BOLD}Step 4: Plugins & Skills${NC}"
    echo "═══════════════════════════════════════════════════════════"
    echo ""
    echo "Plugins extend Claude Code with additional features:"
    echo ""
    echo "  • glm-plan-bug: Submit bug/issue feedback to Z.AI"
    echo "  • glm-plan-usage: Query your GLM Coding Plan usage statistics"
    echo ""

    if confirm "Install Z.AI plugins?" "Y"; then
        INSTALL_PLUGINS=true
        log_success "Plugins selected"
    else
        INSTALL_PLUGINS=false
        log_warning "Plugins skipped"
    fi

    echo ""
}

################################################################################
# Hooks Selection
################################################################################

select_hooks() {
    print_header
    echo -e "${BOLD}Step 5: Hooks${NC}"
    echo "═══════════════════════════════════════════════════════════"
    echo ""
    echo "Hooks are scripts that run automatically on specific events."
    echo "Do you want to copy existing hooks from the package?"
    echo ""

    if confirm "Install hooks?" "N"; then
        INSTALL_HOOKS=true
        log_success "Hooks selected"
    else
        INSTALL_HOOKS=false
        log_warning "Hooks skipped"
    fi

    echo ""
}

################################################################################
# Prerequisites Check
################################################################################

check_prerequisites() {
    print_header
    echo -e "${BOLD}Step 6: Prerequisites Check${NC}"
    echo "═══════════════════════════════════════════════════════════"
    echo ""

    local errors=0

    # Check Node.js
    if command -v node &> /dev/null; then
        NODE_VERSION=$(node -v)
        log_success "Node.js installed: $NODE_VERSION"
    else
        log_error "Node.js not found"
        errors=$((errors+1))
    fi

    # Check npm
    if command -v npm &> /dev/null; then
        NPM_VERSION=$(npm -v)
        log_success "npm installed: $NPM_VERSION"
    else
        log_error "npm not found"
        errors=$((errors+1))
    fi

    # Check python3
    if command -v python3 &> /dev/null; then
        PYTHON_VERSION=$(python3 --version)
        log_success "Python installed: $PYTHON_VERSION"
    else
        log_warning "Python3 not found (optional)"
    fi

    # Check npx
    if command -v npx &> /dev/null; then
        log_success "npx available"
    else
        log_warning "npx not found (will be installed with npm)"
    fi

    echo ""

    if [ $errors -gt 0 ]; then
        log_error "Some prerequisites are missing. Please install them and try again."
        echo ""
        echo "Install Node.js: https://nodejs.org/"
        echo "Or use nvm: curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.0/install.sh | bash"
        echo ""
        exit 1
    fi

    log_success "Prerequisites check passed"
    echo ""
    sleep 1
}

################################################################################
# Claude Code Installation
################################################################################

install_claude_code() {
    print_header
    echo -e "${BOLD}Step 7: Claude Code Installation${NC}"
    echo "═══════════════════════════════════════════════════════════"
    echo ""

    # Check if Claude Code is installed
    if command -v claude-code &> /dev/null; then
        log_success "Claude Code is already installed"
        claude-code --version 2>/dev/null || log_info "Version: unknown"
        echo ""
        return
    fi

    echo -e "${YELLOW}Claude Code is not installed on this system.${NC}"
    echo ""
    echo "Claude Code is Anthropic's official CLI for Claude."
    echo "You need it to use these customizations."
    echo ""
    echo "Installation options:"
    echo ""
    echo -e "  ${GREEN}1${NC}) ${BOLD}Install via npm (recommended)${NC}"
    echo "      • Requires Node.js 14+"
    echo "      • Command: npm install -g @anthropic-ai/claude-code"
    echo "      • Fastest method"
    echo ""
    echo -e "  ${GREEN}2${NC}) ${BOLD}Install via curl (alternative)${NC}"
    echo "      • Downloads standalone binary"
    echo "      • No Node.js required"
    echo ""
    echo -e "  ${GREEN}3${NC}) ${BOLD}Manual installation${NC}"
    echo "      • Visit: https://claude.ai/download"
    echo "      • Choose your platform"
    echo ""
    echo -e "  ${YELLOW}0${NC}) Skip installation"
    echo ""
    read -p "Select installation method [1/2/3/0]: " install_choice

    case $install_choice in
        1)
            echo ""
            log_info "Installing Claude Code via npm..."
            echo ""

            if command -v npm &> /dev/null; then
                npm install -g @anthropic-ai/claude-code

                if command -v claude-code &> /dev/null; then
                    log_success "Claude Code installed successfully!"
                    echo ""
                    claude-code --version 2>/dev/null || true
                else
                    log_error "Installation failed. Please try manual installation."
                fi
            else
                log_error "npm not found. Please install Node.js first."
                echo "Visit: https://nodejs.org/"
            fi
            ;;
        2)
            echo ""
            log_info "Installing Claude Code via curl..."
            echo ""

            if command -v curl &> /dev/null; then
                # Detect OS and architecture
                OS="$(uname -s)"
                ARCH="$(uname -m)"

                case "$OS" in
                    Linux)
                        if [ "$ARCH" = "x86_64" ]; then
                            curl -L https://claude.ai/download/claude-code-linux -o /tmp/claude-code
                            sudo mv /tmp/claude-code /usr/local/bin/claude-code
                            sudo chmod +x /usr/local/bin/claude-code
                            log_success "Claude Code installed!"
                        else
                            log_error "Unsupported architecture: $ARCH"
                        fi
                        ;;
                    Darwin)
                        if [ "$ARCH" = "arm64" ]; then
                            curl -L https://claude.ai/download/claude-code-mac-arm -o /tmp/claude-code
                        else
                            curl -L https://claude.ai/download/claude-code-mac -o /tmp/claude-code
                        fi
                        sudo mv /tmp/claude-code /usr/local/bin/claude-code
                        sudo chmod +x /usr/local/bin/claude-code
                        log_success "Claude Code installed!"
                        ;;
                    *)
                        log_error "Unsupported OS: $OS"
                        ;;
                esac
            else
                log_error "curl not found. Please install curl or use npm method."
            fi
            ;;
        3)
            echo ""
            log_info "Please visit https://claude.ai/download to install Claude Code manually"
            echo ""
            echo "After installation, run this script again."
            echo ""
            exit 0
            ;;
        0)
            log_warning "Skipping Claude Code installation"
            log_warning "You will need to install it manually to use these customizations"
            ;;
        *)
            log_error "Invalid choice"
            ;;
    esac

    echo ""
    sleep 2
}

################################################################################
# Backup Existing Configuration
################################################################################

backup_config() {
    if [ -d "$CLAUDE_DIR" ]; then
        print_header
        echo -e "${BOLD}Step 8: Backup${NC}"
        echo "═══════════════════════════════════════════════════════════"
        echo ""
        log_info "Existing Claude Code configuration found"
        log_info "Creating backup at: $BACKUP_DIR"
        echo ""

        cp -r "$CLAUDE_DIR" "$BACKUP_DIR"
        log_success "Backup created successfully"
        echo ""
        sleep 1
    fi
}

################################################################################
# Installation
################################################################################

create_directories() {
    log_info "Creating directory structure..."

    mkdir -p "$CLAUDE_DIR"/{agents,plugins/cache,plugins/marketplaces,hooks,debug,file-history,paste-cache,projects,session-env,shell-snapshots,todos}

    if [ "$INSTALL_ENGINEERING" = true ]; then mkdir -p "$CLAUDE_DIR/agents/engineering"; fi
    if [ "$INSTALL_MARKETING" = true ]; then mkdir -p "$CLAUDE_DIR/agents/marketing"; fi
    if [ "$INSTALL_PRODUCT" = true ]; then mkdir -p "$CLAUDE_DIR/agents/product"; fi
    if [ "$INSTALL_STUDIO_OPS" = true ]; then mkdir -p "$CLAUDE_DIR/agents/studio-operations"; fi
    if [ "$INSTALL_PROJECT_MGMT" = true ]; then mkdir -p "$CLAUDE_DIR/agents/project-management"; fi
    if [ "$INSTALL_TESTING" = true ]; then mkdir -p "$CLAUDE_DIR/agents/testing"; fi
    if [ "$INSTALL_DESIGN" = true ]; then mkdir -p "$CLAUDE_DIR/agents/design"; fi
    if [ "$INSTALL_BONUS" = true ]; then mkdir -p "$CLAUDE_DIR/agents/bonus"; fi

    log_success "Directories created"
}

install_agents() {
    if [ $SELECTED_AGENTS -eq 0 ]; then
        return
    fi

    log_info "Installing agents..."

    local source_agents="$SCRIPT_DIR/claude-complete-package/agents"

    if [ ! -d "$source_agents" ]; then
        log_warning "Agent source directory not found at $source_agents"
        log_warning "Please ensure you're running this from the correct location"
        return
    fi

    if [ "$INSTALL_ENGINEERING" = true ]; then
        cp -r "$source_agents/engineering/"*.md "$CLAUDE_DIR/agents/engineering/" 2>/dev/null || true
    fi

    if [ "$INSTALL_MARKETING" = true ]; then
        cp -r "$source_agents/marketing/"*.md "$CLAUDE_DIR/agents/marketing/" 2>/dev/null || true
    fi

    if [ "$INSTALL_PRODUCT" = true ]; then
        cp -r "$source_agents/product/"*.md "$CLAUDE_DIR/agents/product/" 2>/dev/null || true
    fi

    if [ "$INSTALL_STUDIO_OPS" = true ]; then
        cp -r "$source_agents/studio-operations/"*.md "$CLAUDE_DIR/agents/studio-operations/" 2>/dev/null || true
    fi

    if [ "$INSTALL_PROJECT_MGMT" = true ]; then
        cp -r "$source_agents/project-management/"*.md "$CLAUDE_DIR/agents/project-management/" 2>/dev/null || true
    fi

    if [ "$INSTALL_TESTING" = true ]; then
        cp -r "$source_agents/testing/"*.md "$CLAUDE_DIR/agents/testing/" 2>/dev/null || true
    fi

    if [ "$INSTALL_DESIGN" = true ]; then
        cp -r "$source_agents/design/"*.md "$CLAUDE_DIR/agents/design/" 2>/dev/null || true
    fi

    if [ "$INSTALL_BONUS" = true ]; then
        cp -r "$source_agents/bonus/"*.md "$CLAUDE_DIR/agents/bonus/" 2>/dev/null || true
    fi

    log_success "Agents installed: $SELECTED_AGENTS"
}

install_settings() {
    log_info "Configuring settings..."

    local settings_file="$CLAUDE_DIR/settings.json"

    # Determine API base URL and help text
    if [ "$USE_ZAI_MODELS" = true ]; then
        API_BASE="https://api.z.ai/api/anthropic"
        API_NAME="Z.AI / GLM Coding Plan"
        API_HELP="Get your API key from: https://z.ai/ (Official docs: https://docs.z.ai/devpack/tool/claude)"
        API_TOKEN_NAME="Z.AI API Key"
    else
        API_BASE="https://api.anthropic.com"
        API_NAME="Anthropic Claude"
        API_HELP="Get your API key from: https://console.anthropic.com/"
        API_TOKEN_NAME="Anthropic API Key"
    fi

    echo ""
    echo -e "${CYAN}API Configuration${NC}"
    echo "─────────────────────────────────────────────────────────────"
    echo "  Provider: $API_NAME"
    echo "  Base URL: $API_BASE"
    echo ""
    echo -e "${YELLOW}$API_HELP${NC}"
    echo ""

    # Check if settings.json exists
    if [ -f "$settings_file" ]; then
        log_warning "settings.json already exists"
        if confirm "Keep existing API token?" "Y"; then
            log_info "Preserving existing configuration"
        else
            echo ""
            read -p "Enter your $API_TOKEN_NAME: " API_TOKEN
            while [ -z "$API_TOKEN" ]; do
                echo -e "${RED}API token cannot be empty${NC}"
                read -p "Enter your $API_TOKEN_NAME: " API_TOKEN
            done

            # Update existing file
            if [ "$USE_ZAI_MODELS" = true ]; then
                cat > "$settings_file" << EOF
{
  "env": {
    "ANTHROPIC_AUTH_TOKEN": "$API_TOKEN",
    "ANTHROPIC_BASE_URL": "$API_BASE",
    "API_TIMEOUT_MS": "3000000",
    "CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC": "1",
    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "glm-4.5-air",
    "ANTHROPIC_DEFAULT_SONNET_MODEL": "glm-4.7",
    "ANTHROPIC_DEFAULT_OPUS_MODEL": "glm-4.7"
  },
  "enabledPlugins": {}
}
EOF
            else
                cat > "$settings_file" << EOF
{
  "env": {
    "ANTHROPIC_AUTH_TOKEN": "$API_TOKEN",
    "ANTHROPIC_BASE_URL": "$API_BASE",
    "API_TIMEOUT_MS": "3000000",
    "CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC": "1"
  },
  "enabledPlugins": {}
}
EOF
            fi
            log_success "API token updated"
        fi
    else
        read -p "Enter your $API_TOKEN_NAME: " API_TOKEN
        while [ -z "$API_TOKEN" ]; do
            echo -e "${RED}API token cannot be empty${NC}"
            read -p "Enter your $API_TOKEN_NAME: " API_TOKEN
        done

        if [ "$USE_ZAI_MODELS" = true ]; then
            cat > "$settings_file" << EOF
{
  "env": {
    "ANTHROPIC_AUTH_TOKEN": "$API_TOKEN",
    "ANTHROPIC_BASE_URL": "$API_BASE",
    "API_TIMEOUT_MS": "3000000",
    "CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC": "1",
    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "glm-4.5-air",
    "ANTHROPIC_DEFAULT_SONNET_MODEL": "glm-4.7",
    "ANTHROPIC_DEFAULT_OPUS_MODEL": "glm-4.7"
  },
  "enabledPlugins": {}
}
EOF
        else
            cat > "$settings_file" << EOF
{
  "env": {
    "ANTHROPIC_AUTH_TOKEN": "$API_TOKEN",
    "ANTHROPIC_BASE_URL": "$API_BASE",
    "API_TIMEOUT_MS": "3000000",
    "CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC": "1"
  },
  "enabledPlugins": {}
}
EOF
        fi
        log_success "API token configured"
    fi

    # Add plugins to enabledPlugins if selected
    if [ "$INSTALL_PLUGINS" = true ]; then
        if [ "$USE_ZAI_MODELS" = true ]; then
            # Add Z.AI plugins
            if command -v jq &> /dev/null; then
                temp=$(mktemp)
                jq '.enabledPlugins += {"glm-plan-bug@zai-coding-plugins": true, "glm-plan-usage@zai-coding-plugins": true}' "$settings_file" > "$temp"
                mv "$temp" "$settings_file"
                log_success "Z.AI plugins enabled"
            else
                log_warning "jq not found, plugins not added to settings"
            fi
        fi
    fi

    log_success "Settings configured for $API_NAME"

    # Version verification and Z.AI documentation reference
    if [ "$USE_ZAI_MODELS" = true ]; then
        echo ""
        echo -e "${CYAN}═══════════════════════════════════════════════════════════════${NC}"
        echo -e "${BOLD}Z.AI GLM Configuration${NC}"
        echo -e "${CYAN}═══════════════════════════════════════════════════════════════${NC}"
        echo ""
        echo -e "${GREEN}✓ GLM Models Configured:${NC}"
        echo "  • glm-4.5-air (Haiku equivalent - fast, efficient)"
        echo "  • glm-4.7 (Sonnet/Opus equivalent - high quality)"
        echo ""
        echo -e "${YELLOW}📖 Official Documentation:${NC}"
        echo "  https://docs.z.ai/devpack/tool/claude"
        echo ""
        echo -e "${YELLOW}🔍 Verify Installation:${NC}"
        echo "  1. Check version: ${CYAN}claude --version${NC} (recommended: 2.0.14+)"
        echo "  2. Start Claude: ${CYAN}claude${NC}"
        echo "  3. Check status: ${CYAN}/status${NC} (when prompted)"
        echo ""
        echo -e "${YELLOW}🔧 Troubleshooting:${NC}"
        echo "  • Close all Claude Code windows and reopen"
        echo "  • Or delete ~/.claude/settings.json and reconfigure"
        echo "  • Verify JSON format is correct (no missing/extra commas)"
        echo ""
    fi
}

install_local_settings() {
    log_info "Configuring permissions..."

    local local_settings="$CLAUDE_DIR/settings.local.json"

    cat > "$local_settings" << 'EOF'
{
  "permissions": {
    "allow": [
      "Bash(npm install:*)",
      "Bash(npm run content:*)",
      "Bash(npm run build:*)",
      "Bash(grep:*)",
      "Bash(find:*)",
      "Bash(for:*)",
      "Bash(do sed:*)",
      "Bash(done)",
      "Bash(python3:*)",
      "Bash(while read f)",
      "Bash(do echo \"$f%-* $f\")",
      "Bash(ls:*)",
      "Bash(node:*)",
      "Bash(pm2 delete:*)",
      "Bash(pm2 start npm:*)",
      "Bash(pm2 save:*)"
    ]
  }
}
EOF

    log_success "Permissions configured"
}

install_mcp_tools() {
    if [ "$INSTALL_MCP_TOOLS" = false ]; then
        return
    fi

    log_info "Installing MCP tools..."

    # Install @z_ai/mcp-server if vision tools selected
    if [ "$INSTALL_VISION_TOOLS" = true ]; then
        if command -v npm &> /dev/null; then
            npm install -g @z_ai/mcp-server 2>/dev/null || {
                log_warning "Global install failed, will use npx"
            }
            log_success "Vision MCP tools installed"
        fi
    fi

    # Install @z_ai/coding-helper for web/GitHub tools
    if [ "$INSTALL_WEB_TOOLS" = true ] || [ "$INSTALL_GITHUB_TOOLS" = true ]; then
        npm install -g @z_ai/coding-helper 2>/dev/null || {
            log_warning "Global install failed, will use npx"
        }
        log_success "Web/GitHub MCP tools installed"
    fi

    log_success "MCP tools configured: $SELECTED_MCP_TOOLS"
}

install_plugins() {
    if [ "$INSTALL_PLUGINS" = false ]; then
        return
    fi

    log_info "Installing plugins..."

    # Create plugin registry
    mkdir -p "$CLAUDE_DIR/plugins/cache/zai-coding-plugins"/{glm-plan-bug,glm-plan-usage}

    local installed_plugins="$CLAUDE_DIR/plugins/installed_plugins.json"

    if [ "$USE_ZAI_MODELS" = true ]; then
        cat > "$installed_plugins" << EOF
{
  "version": 2,
  "plugins": {
    "glm-plan-bug@zai-coding-plugins": [
      {
        "scope": "user",
        "installPath": "$CLAUDE_DIR/plugins/cache/zai-coding-plugins/glm-plan-bug/0.0.1",
        "version": "0.0.1",
        "installedAt": "$(date -u +%Y-%m-%dT%H:%M:%S.000Z)",
        "lastUpdated": "$(date -u +%Y-%m-%dT%H:%M:%S.000Z)"
      }
    ],
    "glm-plan-usage@zai-coding-plugins": [
      {
        "scope": "user",
        "installPath": "$CLAUDE_DIR/plugins/cache/zai-coding-plugins/glm-plan-usage/0.0.1",
        "version": "0.0.1",
        "installedAt": "$(date -u +%Y-%m-%dT%H:%M:%S.000Z)",
        "lastUpdated": "$(date -u +%Y-%m-%dT%H:%M:%S.000Z)"
      }
    ]
  }
}
EOF
    fi

    log_success "Plugins installed"
}

install_hooks() {
    if [ "$INSTALL_HOOKS" = false ]; then
        return
    fi

    local source_hooks="$SCRIPT_DIR/claude-complete-package/hooks"

    if [ -d "$source_hooks" ] && [ "$(ls -A $source_hooks 2>/dev/null)" ]; then
        log_info "Installing hooks..."
        cp -r "$source_hooks/"* "$CLAUDE_DIR/hooks/" 2>/dev/null || true
        log_success "Hooks installed"
    fi
}

perform_installation() {
    print_header
    echo -e "${BOLD}Step 9: Installation${NC}"
    echo "═══════════════════════════════════════════════════════════"
    echo ""

    create_directories
    install_agents
    install_settings
    install_local_settings
    install_mcp_tools
    install_plugins
    install_hooks

    echo ""
    log_success "Installation completed!"
    echo ""
    sleep 1
}

################################################################################
# Summary & Launch
################################################################################

show_summary() {
    print_header
    echo -e "${BOLD}Installation Summary${NC}"
    echo "╔══════════════════════════════════════════════════════════════════╗${NC}"
    echo "║                                                                  ║"
    echo "║  Configuration:                                                  ║"

    if [ "$USE_ZAI_MODELS" = true ]; then
        echo "║  • Model Provider: ${CYAN}Z.AI / GLM Coding Plan${NC}                    ║"
    else
        echo "║  • Model Provider: ${GREEN}Anthropic Claude (Official)${NC}              ║"
    fi

    echo "║                                                                  ║"
    echo "║  Installed Components:                                           ║"

    if [ $SELECTED_AGENTS -gt 0 ]; then
        echo "║  • Agents: ${GREEN}$SELECTED_AGENTS custom agents${NC}                            ║"
    fi

    if [ $SELECTED_MCP_TOOLS -gt 0 ]; then
        echo "║  • MCP Tools: ${CYAN}$SELECTED_MCP_TOOLS tools${NC}                                 ║"
    fi

    if [ "$INSTALL_PLUGINS" = true ]; then
        echo "║  • Plugins: ${GREEN}Z.AI plugins enabled${NC}                           ║"
    fi

    if [ "$INSTALL_HOOKS" = true ]; then
        echo "║  • Hooks: ${GREEN}Installed${NC}                                        ║"
    fi

    echo "║                                                                  ║"
    echo "╚══════════════════════════════════════════════════════════════════╝"
    echo ""
}

launch_claude_code() {
    echo ""
    echo -e "${BOLD}Launch Claude Code?${NC}"
    echo ""
    echo "You can launch Claude Code now to start using your customizations."
    echo ""

    if confirm "Launch Claude Code now?" "N"; then
        echo ""
        log_info "Launching Claude Code..."
        echo ""

        # Try to launch claude-code
        if command -v claude-code &> /dev/null; then
            exec claude-code
        elif command -v code &> /dev/null; then
            log_info "Trying VS Code command..."
            code
        else
            log_warning "Claude Code command not found"
            echo ""
            echo "Please launch Claude Code manually:"
            echo "  • From applications menu"
            echo "  • Or run: claude-code"
            echo "  • Or run: code"
        fi
    else
        echo ""
        log_info "You can launch Claude Code later with: claude-code"
    fi
}

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

main() {
    show_welcome
    select_model
    select_agents
    select_mcp_tools
    select_plugins
    select_hooks
    check_prerequisites
    install_claude_code
    backup_config
    perform_installation
    show_summary

    if [ -n "$BACKUP_DIR" ] && [ -d "$BACKUP_DIR" ]; then
        log_info "Backup saved to: $BACKUP_DIR"
    fi

    launch_claude_code
}

# Run main
main "$@"