#!/usr/bin/env bash
# syntaxis Bundle Installer
#
# Standalone bash installer for offline bundles
# Works without NuShell or Rust toolchain
#
# Usage:
#   ./install.sh                          # Interactive mode
#   ./install.sh --prefix ~/.local        # Custom prefix
#   ./install.sh --verify --force         # Auto-verify and force overwrite
#   ./install.sh --help                   # Show help

set -euo pipefail

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

# Script state
BUNDLE_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
SCRIPT_DIR="$(pwd)"
BUNDLE_NAME=$(basename "$BUNDLE_DIR")
INSTALL_PREFIX=""
VERIFY=false
FORCE=false
BACKUP=true
DRY_RUN=false
HELP=false
UNATTENDED=false

# Defaults by OS
detect_os() {
    case "$(uname -s)" in
        Darwin*)  echo "macos" ;;
        Linux*)   echo "linux" ;;
        MINGW*)   echo "windows" ;;
        *)        echo "unknown" ;;
    esac
}

detect_arch() {
    case "$(uname -m)" in
        x86_64)   echo "x86_64" ;;
        aarch64)  echo "aarch64" ;;
        arm64)    echo "aarch64" ;;  # macOS Apple Silicon
        *)        echo "unknown" ;;
    esac
}

# Logging functions
log() {
    echo "[$(date +'%Y-%m-%d %H:%M:%S')] $*"
}

log_error() {
    echo -e "${RED}[ERROR]${NC} $*" >&2
}

log_success() {
    echo -e "${GREEN}✅${NC} $*"
}

log_info() {
    echo -e "${BLUE}ℹ️${NC}  $*"
}

log_warn() {
    echo -e "${YELLOW}⚠️${NC}  $*"
}

# Check if NuShell is installed
check_nushell() {
    if command -v nu &> /dev/null; then
        NUSHELL_VERSION=$(nu --version 2>/dev/null | head -1)
        return 0
    else
        return 1
    fi
}

# Show NuShell installation guide
show_nushell_guide() {
    local os=$(detect_os)

    echo ""
    echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
    echo -e "${BLUE}📦 How to Install NuShell${NC}"
    echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
    echo ""

    case "$os" in
        macos)
            echo "macOS (Homebrew):"
            echo "  brew install nushell"
            echo ""
            echo "macOS (Cargo):"
            echo "  cargo install nu"
            ;;
        linux)
            echo "Linux (Arch):"
            echo "  pacman -S nushell"
            echo ""
            echo "Linux (Ubuntu/Debian):"
            echo "  cargo install nu"
            echo ""
            echo "Linux (Fedora):"
            echo "  dnf install nushell"
            ;;
        windows)
            echo "Windows (WinGet):"
            echo "  winget install nushell"
            echo ""
            echo "Windows (Cargo):"
            echo "  cargo install nu"
            ;;
        *)
            echo "See installation guide:"
            echo "  https://www.nushell.sh/book/installation.html"
            ;;
    esac

    echo ""
    echo "After installation:"
    echo "  1. Re-run this installer to use full-featured wrappers"
    echo "  2. Run: ./install.sh"
    echo ""
}

# Prompt user about NuShell
prompt_nushell() {
    if [[ $UNATTENDED == true ]]; then
        # In unattended mode, just warn and continue
        log_warn "NuShell not found - using simplified wrapper mode"
        return 0
    fi

    echo ""
    echo -e "${YELLOW}⚠️  NuShell Not Detected${NC}"
    echo ""
    echo "Wrappers will use simplified mode (config auto-discovery only)"
    echo "For full features, install NuShell: https://www.nushell.sh"
    echo ""

    while true; do
        echo -n "Continue with simplified wrappers? [Y/n/i] "
        read -r response
        case "$response" in
            [Yy]|"")
                return 0
                ;;
            [Nn])
                log_info "Please install NuShell and run this installer again"
                show_nushell_guide
                exit 0
                ;;
            [Ii])
                show_nushell_guide
                echo -n "Continue with installation? [Y/n] "
                read -r cont
                if [[ "$cont" =~ [Yy] ]] || [[ -z "$cont" ]]; then
                    return 0
                else
                    exit 0
                fi
                ;;
            *)
                echo "Please answer Y (continue), N (exit), or I (installation guide)"
                ;;
        esac
    done
}

# Display help
show_help() {
    cat << 'EOF'
syntaxis Bundle Installer

USAGE:
  ./install.sh [OPTIONS]

OPTIONS:
  --prefix <PATH>       Installation prefix
                        Default: /usr/local (Linux/macOS) or /Program Files/syntaxis (Windows)
  --config-dir <PATH>   Configuration directory
                        Default: ~/.config/syntaxis
  --verify              Verify checksums before installing
  --backup              Backup existing binaries (default: true)
  --no-backup           Don't backup existing binaries
  --force               Force overwrite without prompting
  --unattended          Non-interactive mode (use defaults)
  --dry-run             Show what would be installed
  --help                Show this help message

EXAMPLES:
  # Interactive installation (prompts for options)
  ./install.sh

  # Install to custom location with verification
  ./install.sh --prefix ~/.local --verify

  # Force installation without backups
  ./install.sh --force --no-backup

  # Unattended installation
  ./install.sh --unattended --prefix /opt/syntaxis

  # Preview installation
  ./install.sh --dry-run

NOTES:
  - This script should be run from within the extracted bundle directory
  - Bundles include all necessary files: binaries, configs, and documentation
  - Installation manifests are saved to ~/.syntaxis/
  - Existing binaries are backed up with timestamp suffix
EOF
}

# Parse command-line arguments
parse_args() {
    while [[ $# -gt 0 ]]; do
        case "$1" in
            --prefix)
                INSTALL_PREFIX="$2"
                shift 2
                ;;
            --config-dir)
                CONFIG_DIR="$2"
                shift 2
                ;;
            --verify)
                VERIFY=true
                shift
                ;;
            --backup)
                BACKUP=true
                shift
                ;;
            --no-backup)
                BACKUP=false
                shift
                ;;
            --force)
                FORCE=true
                shift
                ;;
            --unattended)
                UNATTENDED=true
                shift
                ;;
            --dry-run)
                DRY_RUN=true
                shift
                ;;
            --help|-h)
                HELP=true
                shift
                ;;
            *)
                log_error "Unknown option: $1"
                exit 1
                ;;
        esac
    done
}

# Validate bundle structure
validate_bundle() {
    log_info "Validating bundle structure..."

    local required_dirs=("bin" "configs" "docs")
    local missing_dirs=()

    for dir in "${required_dirs[@]}"; do
        if [[ ! -d "$BUNDLE_DIR/$dir" ]]; then
            missing_dirs+=("$dir")
        fi
    done

    if [[ ${#missing_dirs[@]} -gt 0 ]]; then
        log_error "Missing required directories: ${missing_dirs[*]}"
        return 1
    fi

    # Check for manifest
    if [[ ! -f "$BUNDLE_DIR/manifest.toml" ]]; then
        log_warn "manifest.toml not found (may affect verification)"
    fi

    log_success "Bundle structure valid"
    return 0
}

# Calculate SHA256 checksum
sha256_file() {
    local file="$1"
    if command -v sha256sum &> /dev/null; then
        sha256sum "$file" | awk '{print $1}'
    elif command -v shasum &> /dev/null; then
        shasum -a 256 "$file" | awk '{print $1}'
    elif command -v openssl &> /dev/null; then
        openssl dgst -sha256 "$file" | awk '{print $NF}'
    else
        log_warn "No checksum command available, skipping verification"
        return 1
    fi
}

# Verify checksums from manifest
verify_checksums() {
    if [[ ! -f "$BUNDLE_DIR/manifest.toml" ]]; then
        log_warn "manifest.toml not found, skipping checksum verification"
        return 0
    fi

    log_info "Verifying checksums..."

    local errors=0
    local verified=0

    # Parse checksums from TOML (basic parsing)
    while IFS='=' read -r key value; do
        if [[ $key =~ ^[[:space:]]*\"bin/ ]]; then
            local file_path=$(echo "$key" | sed 's/.*"\(bin\/[^"]*\)".*/\1/')
            local expected=$(echo "$value" | sed 's/.*"\([^"]*\)".*/\1/')

            if [[ -f "$BUNDLE_DIR/$file_path" ]]; then
                local actual=$(sha256_file "$BUNDLE_DIR/$file_path")
                if [[ "$actual" == "$expected" ]]; then
                    verified=$((verified + 1))
                else
                    log_warn "Checksum mismatch: $file_path"
                    errors=$((errors + 1))
                fi
            fi
        fi
    done < "$BUNDLE_DIR/manifest.toml"

    if [[ $errors -gt 0 ]]; then
        log_warn "Checksum verification failed for $errors file(s)"
        return 1
    fi

    if [[ $verified -gt 0 ]]; then
        log_success "Verified $verified file(s) with checksums"
    fi

    return 0
}

# Detect installation prefix
detect_install_prefix() {
    local os=$(detect_os)
    local default_prefix

    case "$os" in
        linux|macos)
            # Try /usr/local first, fallback to ~/.local
            if [[ -w /usr/local/bin ]]; then
                default_prefix="/usr/local"
            else
                default_prefix="$HOME/.local"
            fi
            ;;
        windows)
            default_prefix="C:\\Program Files\\syntaxis"
            ;;
        *)
            default_prefix="$HOME/.local"
            ;;
    esac

    if [[ -z "$INSTALL_PREFIX" ]]; then
        INSTALL_PREFIX="$default_prefix"
    fi

    # Expand ~ to home
    INSTALL_PREFIX=$(eval echo "$INSTALL_PREFIX")

    # Create bin directory path
    BIN_DIR="$INSTALL_PREFIX/bin"
}

# Ensure directory exists and is writable
ensure_directory() {
    local dir="$1"
    local description="$2"

    if [[ ! -d "$dir" ]]; then
        log_info "Creating $description: $dir"
        mkdir -p "$dir" || {
            log_error "Failed to create $description: $dir"
            return 1
        }
    fi

    # Check write permissions
    if [[ ! -w "$dir" ]]; then
        log_error "No write permission to $description: $dir"
        return 1
    fi

    return 0
}

# Backup existing binary
backup_binary() {
    local binary_path="$1"

    if [[ ! -f "$binary_path" ]]; then
        return 0  # No backup needed if file doesn't exist
    fi

    local timestamp=$(date +%Y%m%d_%H%M%S)
    local backup_path="${binary_path}.backup.${timestamp}"

    log_info "Backing up: $(basename "$binary_path") → $(basename "$backup_path")"
    cp "$binary_path" "$backup_path" || {
        log_error "Failed to backup $binary_path"
        return 1
    }

    return 0
}

# Create hybrid bash wrapper script for a binary
# Tries NuShell first (full features), falls back to bash (simplified config discovery)
create_bash_wrapper() {
    local dest="$1"
    local binary_name=$(basename "$dest")

    cat > "$dest" << 'WRAPPER_EOF'
#!/bin/bash
# Hybrid wrapper for BINARY_NAME
# Layer 1: Bash wrapper
# - Tries NuShell first (full features with libraries)
# - Falls back to bash (simplified config discovery)
#
# Usage: BINARY_NAME [arguments]

BINARY_NAME="BINARY_PLACEHOLDER"
REAL_BINARY="$(dirname "$0")/${BINARY_NAME}.real"

# Try NuShell first (preferred - full features)
if command -v nu &>/dev/null; then
    # NuShell available - use full wrapper with libraries
    export NU_LIB_DIRS="$HOME/.config/syntaxis/scripts"
    exec nu "$HOME/.config/syntaxis/scripts/${BINARY_NAME}.nu" "$@"
fi

# Bash fallback (simplified - config discovery only)
# Search for config file in standard locations
for cfg_path in \
    "$HOME/.config/syntaxis/${BINARY_NAME}.toml" \
    "$HOME/.config/syntaxis/config.toml" \
    "$HOME/.config/syntaxis/syntaxis.toml" \
    ".syntaxis/${BINARY_NAME}.toml" \
    ".project/${BINARY_NAME}.toml" \
    ".coder/${BINARY_NAME}.toml"; do

    if [[ -f "$cfg_path" ]]; then
        exec "$REAL_BINARY" --config "$cfg_path" "$@"
    fi
done

# No config found - execute with defaults
exec "$REAL_BINARY" "$@"
WRAPPER_EOF

    # Replace placeholder with actual binary name
    sed -i.tmp "s/BINARY_PLACEHOLDER/${binary_name}/g" "$dest"
    rm -f "${dest}.tmp"

    chmod 755 "$dest"
}

# Install binary with wrapper support
install_binary() {
    local source="$1"
    local dest="$2"
    local binary_name=$(basename "$source")
    local real_dest="${dest}.real"

    if [[ ! -f "$source" ]]; then
        log_warn "Binary not found: $binary_name"
        return 1
    fi

    # Check if destination exists
    if [[ -f "$dest" ]] && [[ $FORCE == false ]] && [[ $UNATTENDED == false ]]; then
        echo -n "Binary already exists: $binary_name. Overwrite? (y/n) "
        read -r response
        if [[ $response != [yY] ]]; then
            log_info "Skipped: $binary_name"
            return 0
        fi
    fi

    # Backup if requested
    if [[ $BACKUP == true ]]; then
        backup_binary "$dest" || true  # Don't fail if no backup
        backup_binary "$real_dest" || true  # Also backup .real if it exists
    fi

    # Copy binary to .real
    cp "$source" "$real_dest" || {
        log_error "Failed to install: $binary_name"
        return 1
    }

    # Make .real binary executable (Unix)
    if [[ $(uname -s) != "MINGW"* ]]; then
        chmod 755 "$real_dest"
    fi

    # Create bash wrapper at original location
    create_bash_wrapper "$dest"

    log_success "Installed: $binary_name (with wrapper)"
    log_info "  Real binary: $real_dest"
    log_info "  Wrapper: $dest"
    return 0
}

# Install all binaries
install_binaries() {
    log_info "Installing binaries..."

    if [[ ! -d "$BUNDLE_DIR/bin" ]]; then
        log_error "No bin directory found in bundle"
        return 1
    fi

    local binaries=()
    local failed=0

    # Find all binaries
    for binary in "$BUNDLE_DIR/bin"/*; do
        if [[ -f "$binary" ]] && [[ -x "$binary" ]]; then
            binaries+=("$(basename "$binary")")
        fi
    done

    if [[ ${#binaries[@]} -eq 0 ]]; then
        log_error "No binaries found in bundle/bin"
        return 1
    fi

    # Install each binary
    for binary in "${binaries[@]}"; do
        if ! install_binary "$BUNDLE_DIR/bin/$binary" "$BIN_DIR/$binary"; then
            failed=$((failed + 1))
        fi
    done

    if [[ $failed -gt 0 ]]; then
        log_error "$failed binary(ies) failed to install"
        return 1
    fi

    log_success "All binaries installed (${#binaries[@]} total)"
    return 0
}

# Deploy NuShell wrapper scripts
deploy_wrapper_scripts() {
    local scripts_dir="$BUNDLE_DIR/scripts"
    local config_scripts_dir="$HOME/.config/syntaxis/scripts"

    # Check if scripts directory exists in bundle
    if [[ ! -d "$scripts_dir" ]]; then
        log_warn "No scripts directory found in bundle (wrapper scripts not available)"
        return 0
    fi

    log_info "Deploying wrapper scripts to $config_scripts_dir..."

    # Create wrapper scripts directory
    if ! ensure_directory "$config_scripts_dir" "wrapper scripts directory"; then
        log_warn "Could not create wrapper scripts directory"
        return 0
    fi

    local deployed=0
    local failed=0

    # Deploy shared library
    if [[ -f "$scripts_dir/syntaxis-lib.nu" ]]; then
        cp "$scripts_dir/syntaxis-lib.nu" "$config_scripts_dir/" || {
            log_warn "Failed to deploy syntaxis-lib.nu"
            failed=$((failed + 1))
        } && {
            deployed=$((deployed + 1))
            log_info "  ✅ Deployed syntaxis-lib.nu"
        }
    fi

    # Deploy binary-specific wrappers (cli, tui, api)
    for binary in syntaxis-cli syntaxis-tui syntaxis-api; do
        # Deploy binary wrapper script (e.g., syntaxis-cli.nu)
        if [[ -f "$scripts_dir/${binary}.nu" ]]; then
            cp "$scripts_dir/${binary}.nu" "$config_scripts_dir/" || {
                log_warn "Failed to deploy ${binary}.nu"
                failed=$((failed + 1))
            } && {
                deployed=$((deployed + 1))
                chmod 755 "$config_scripts_dir/${binary}.nu"
                log_info "  ✅ Deployed ${binary}.nu"
            }
        fi

        # Deploy binary library script (e.g., syntaxis-cli-lib.nu)
        if [[ -f "$scripts_dir/${binary}-lib.nu" ]]; then
            cp "$scripts_dir/${binary}-lib.nu" "$config_scripts_dir/" || {
                log_warn "Failed to deploy ${binary}-lib.nu"
                failed=$((failed + 1))
            } && {
                deployed=$((deployed + 1))
                chmod 755 "$config_scripts_dir/${binary}-lib.nu"
                log_info "  ✅ Deployed ${binary}-lib.nu"
            }
        fi
    done

    if [[ $deployed -gt 0 ]]; then
        log_success "Wrapper scripts deployed ($deployed files)"
        return 0
    else
        log_warn "No wrapper scripts found in bundle"
        return 0
    fi
}

# Deploy configuration files
deploy_configs() {
    local config_dir="${CONFIG_DIR:-$HOME/.config/syntaxis}"

    log_info "Deploying configuration files to $config_dir..."

    if [[ ! -d "$BUNDLE_DIR/configs" ]]; then
        log_warn "No configs directory found in bundle"
        return 0
    fi

    if ! ensure_directory "$config_dir" "config directory"; then
        return 1
    fi

    local config_count=0

    # Copy all config files
    while IFS= read -r -d '' config_file; do
        if [[ -f "$config_file" ]]; then
            local relative="${config_file#$BUNDLE_DIR/configs/}"
            local dest_path="$config_dir/$relative"
            local dest_dir=$(dirname "$dest_path")

            # Create subdirectories
            mkdir -p "$dest_dir" || return 1

            # Check if file exists
            if [[ -f "$dest_path" ]] && [[ $FORCE == false ]]; then
                log_info "Config already exists: $relative (keeping original)"
                continue
            fi

            cp "$config_file" "$dest_path" || {
                log_error "Failed to deploy config: $relative"
                continue
            }

            log_success "Deployed: $relative"
            config_count=$((config_count + 1))
        fi
    done < <(find "$BUNDLE_DIR/configs" -type f -print0)

    if [[ $config_count -gt 0 ]]; then
        log_success "Deployed $config_count configuration file(s)"
    fi

    return 0
}

# Create installation manifest
create_manifest() {
    local manifest_dir="$HOME/.syntaxis"
    local manifest_file="$manifest_dir/manifest.toml"

    mkdir -p "$manifest_dir" || return 1

    local timestamp=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
    local config_dir="${CONFIG_DIR:-$HOME/.config/syntaxis}"

    cat > "$manifest_file" << EOF
[installation]
timestamp = "$timestamp"
prefix = "$(eval echo ~)/.local"
version = "0.1.0"
bundle = "$BUNDLE_NAME"

[[binaries]]
name = "syntaxis-cli"
installed_at = "$timestamp"

[[binaries]]
name = "syntaxis-tui"
installed_at = "$timestamp"

[[binaries]]
name = "syntaxis-api"
installed_at = "$timestamp"

[deployment]
config_dir = "$config_dir"
deployed_at = "$timestamp"
EOF

    log_success "Manifest saved: $manifest_file"
    return 0
}

# Print section header
print_header() {
    local title="$1"
    echo ""
    echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
    echo -e "${BLUE}${title}${NC}"
    echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
}

# Show installation summary
show_summary() {
    echo ""
    echo -e "${GREEN}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
    echo -e "${GREEN}✅ Installation Complete!${NC}"
    echo -e "${GREEN}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
    echo ""
    echo "Installation Details:"
    echo "  Prefix:    $INSTALL_PREFIX"
    echo "  Binaries:  $BIN_DIR"
    echo "  Configs:   ${CONFIG_DIR:-$HOME/.config/syntaxis}"
    echo "  Manifest:  $HOME/.syntaxis/manifest.toml"
    echo ""
    echo "Quick Start:"
    echo "  syntaxis-cli --help              # CLI documentation"
    echo "  syntaxis-tui                     # Launch terminal UI"
    echo "  syntaxis-api                     # Start API server (port 3000)"
    echo ""
    echo "Next Steps:"
    echo "  1. Ensure $BIN_DIR is in your PATH"
    echo "  2. Reload your shell: source ~/.bashrc (or ~/.zshrc)"
    echo "  3. Verify: syntaxis-cli --version"
    echo ""
    echo "Configuration:"
    echo "  Edit configs in: ${CONFIG_DIR:-$HOME/.config/syntaxis}/"
    echo "  Set environment: export SYNTAXIS_CONFIG_DIR=${CONFIG_DIR:-$HOME/.config/syntaxis}"
    echo ""
}

# Main installation flow
main() {
    parse_args "$@"

    if [[ $HELP == true ]]; then
        show_help
        exit 0
    fi

    # Welcome message
    echo -e "${BLUE}"
    echo "╔════════════════════════════════════════════════════════╗"
    echo "║   syntaxis Bundle Installer                            ║"
    echo "║   Offline Installation Tool                            ║"
    echo "╚════════════════════════════════════════════════════════╝"
    echo -e "${NC}"

    log "Starting installation from: $BUNDLE_DIR"

    # Validate bundle
    if ! validate_bundle; then
        log_error "Bundle validation failed"
        exit 1
    fi

    # Verify checksums if requested
    if [[ $VERIFY == true ]]; then
        if ! verify_checksums; then
            if [[ $FORCE == false ]]; then
                log_error "Checksum verification failed, aborting installation"
                exit 1
            else
                log_warn "Checksum verification failed, but continuing (--force)"
            fi
        fi
    fi

    # Detect installation prefix
    detect_install_prefix

    # Show configuration
    echo ""
    echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
    echo -e "${BLUE}Installation Configuration${NC}"
    echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
    echo "  Installation Prefix: $INSTALL_PREFIX"
    echo "  Binaries Directory:  $BIN_DIR"
    echo "  Config Directory:    ${CONFIG_DIR:-$HOME/.config/syntaxis}"
    echo "  Backup Existing:     $BACKUP"
    echo "  Verify Checksums:    $VERIFY"
    echo "  Force Overwrite:     $FORCE"
    echo "  Dry Run:             $DRY_RUN"
    echo ""

    if [[ $DRY_RUN == true ]]; then
        log_info "DRY RUN MODE - No changes will be made"
        return 0
    fi

    # Confirm installation (unless unattended)
    if [[ $UNATTENDED == false ]]; then
        echo -n "Continue with installation? (y/n) "
        read -r response
        if [[ $response != [yY] ]]; then
            log "Installation cancelled"
            exit 0
        fi
    fi

    echo ""

    # Ensure directories exist and are writable
    if ! ensure_directory "$BIN_DIR" "installation directory"; then
        log_error "Cannot write to installation directory"
        exit 1
    fi

    # Check NuShell availability and inform user
    print_header "Wrapper Configuration"
    if check_nushell; then
        log_success "NuShell detected ($NUSHELL_VERSION)"
        log_info "Wrappers will use full-featured mode with NuShell libraries"
    else
        log_warn "NuShell not detected"
        log_info "Wrappers will use simplified mode (config auto-discovery only)"
        prompt_nushell  # This may exit or continue
    fi

    # Install binaries
    if ! install_binaries; then
        log_error "Binary installation failed"
        exit 1
    fi

    # Deploy wrapper scripts (for auto-config injection)
    if ! deploy_wrapper_scripts; then
        log_warn "Wrapper scripts deployment failed (continuing - wrappers optional)"
    fi

    # Deploy configs
    if ! deploy_configs; then
        log_warn "Configuration deployment failed (continuing)"
    fi

    # Create manifest
    if ! create_manifest; then
        log_warn "Failed to create manifest"
    fi

    # Show summary
    show_summary

    log_success "Installation successful"
}

# Run main function
main "$@"