#!/bin/bash

# Configuration
PROJECT_NAME=""
DEFAULT_TEMPLATES_DIR="$HOME/.bash_templates/project_scaffold" # Custom templates directory

# Function to display script usage
usage() {
    echo "Usage: $0 <project_name> [-t <template_dir>] [-h]"
    echo "  <project_name>  The name of the new project directory."
    echo "  -t <template_dir>  Optional: Specify a custom directory for template files."
    echo "                     Default: $DEFAULT_TEMPLATES_DIR"
    echo "  -h              Display this help message."
    exit 0
}

# Function to create basic project structure
create_structure() {
    local name="$1"
    local templates_path="$2"

    if [ -d "$name" ]; then
        echo "Error: Directory '$name' already exists. Please choose a different name or remove it." >&2
        exit 1
    fi

    echo "Creating project directory: $name"
    mkdir "$name"
    cd "$name" || exit 1 # Exit if cannot change directory

    echo "Creating core directories..."
    mkdir -p src public assets config tests docs scripts

    echo "Creating basic files..."
    touch README.md
    echo "# $name" > README.md
    echo "## Project Setup" >> README.md
    echo "```bash" >> README.md
    echo "npm install" >> README.md
    echo "npm run dev" >> README.md
    echo "```" >> README.md

    touch .env.example
    echo "APP_NAME=$name" > .env.example
    echo "APP_ENV=development" >> .env.example
    echo "DB_HOST=localhost" >> .env.example

    touch .gitignore
    echo "node_modules/" >> .gitignore
    echo "dist/" >> .gitignore
    echo "build/" >> .gitignore
    echo ".env" >> .gitignore
    echo "*.log" >> .gitignore
    echo "*.DS_Store" >> .gitignore

    # Copy custom templates if directory exists
    if [ -d "$templates_path" ]; then
        echo "Copying custom templates from '$templates_path'..."
        # Using cp -r to copy directories and files recursively
        # rsync can also be used for more control
        cp -r "$templates_path"/* . 2>/dev/null || : # Ignore errors if dir is empty
        echo "Custom templates copied."
    else
        echo "No custom template directory found at '$templates_path'. Skipping custom templates."
        echo "You can create one (e.g., mkdir -p $templates_path) and add your common files there."
    fi

    echo "Project '$name' created successfully at $(pwd)."
    echo "Navigate into it with: cd $name"
}

# --- Main Script Logic ---

# Parse command-line arguments
# ':' for option with argument, 'h' for help
while getopts "ht:" opt; do
    case "${opt}" in
        h)
            usage
            ;;
        t)
            DEFAULT_TEMPLATES_DIR="${OPTARG}"
            ;;
        :)
            echo "Error: Option -${OPTARG} requires an argument." >&2
            usage
            ;;
        ?)
            echo "Error: Invalid option -${OPTARG}." >&2
            usage
            ;;
    esac
done

# Shift off the options and their arguments
shift $((OPTIND -1))

# Check for project name argument
if [ -z "$1" ]; then
    echo "Error: Project name is required." >&2
    usage
fi

PROJECT_NAME="$1"

create_structure "$PROJECT_NAME" "$DEFAULT_TEMPLATES_DIR"