#!/usr/bin/env bash
set -e

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m'

PROJECT_NAME="${1:-}"
PROJECT_PATH="${2:-.}"

SKILL_DIR="$(dirname "$(dirname "$(readlink -f "$0")")")"
TEMPLATE_DIR="$SKILL_DIR/templates/astro-tina-starter"

log_info() { echo -e "${BLUE}[INFO]${NC} $1"; }
log_success() { echo -e "${GREEN}[SUCCESS]${NC} $1"; }
log_warning() { echo -e "${YELLOW}[WARNING]${NC} $1"; }
log_error() { echo -e "${RED}[ERROR]${NC} $1"; }

print_usage() {
    cat << EOF
Usage: $(basename "$0") [project-name] [project-path]

Create new Astro + Tina CMS project from template

Arguments:
  project-name    Project name (optional)
  project-path    Project location (default: current directory)

Examples:
  $(basename "$0") my-website
  $(basename "$0") my-website /path/to/projects/

Creates:
  - Astro 6.1.7 framework
  - Tailwind CSS 4.x
  - Tina CMS (self-hosted)
  - Astro DB for consent logging
  - PDPA-compliant consent system

EOF
}

check_requirements() {
    log_info "Checking requirements..."

    if ! command -v git &> /dev/null; then
        log_error "git not found"
        exit 1
    fi

    if ! command -v node &> /dev/null; then
        log_error "node.js not found"
        exit 1
    fi

    NODE_VERSION=$(node -v | cut -d'v' -f2 | cut -d'.' -f1)
    if [ "$NODE_VERSION" -lt 20 ]; then
        log_error "node.js >= 20 required (current: $(node -v))"
        exit 1
    fi

    if ! command -v npm &> /dev/null; then
        log_error "npm not found"
        exit 1
    fi

    if [ ! -d "$TEMPLATE_DIR" ]; then
        log_error "Template not found: $TEMPLATE_DIR"
        exit 1
    fi

    log_success "Requirements OK (git, node $(node -v), npm)"
}

setup_directory() {
    local actual_project_path="$PROJECT_PATH"

    if [ -n "$PROJECT_NAME" ]; then
        actual_project_path="$PROJECT_PATH/$PROJECT_NAME"
    fi

    mkdir -p "$actual_project_path"

    if [ "$(ls -A "$actual_project_path" | wc -l)" -gt 0 ]; then
        log_warning "Directory not empty: $actual_project_path"
        read -p "Continue? (y/n): " -n 1 -r
        echo
        if [[ ! $REPLY =~ ^[Yy]$ ]]; then
            exit 1
        fi
    fi

    PROJECT_PATH="$actual_project_path"
    log_info "Project path: $PROJECT_PATH"
}

copy_template() {
    log_info "Copying Astro+Tina template..."

    cp -r "$TEMPLATE_DIR/"* "$PROJECT_PATH/"
    cp -r "$TEMPLATE_DIR"/.* "$PROJECT_PATH/" 2>/dev/null || true

    log_success "Template copied"
}

copy_consent_system() {
    log_info "Adding PDPA consent system..."

    local consent_template="$SKILL_DIR/templates/consent"

    if [ -d "$consent_template" ]; then
        mkdir -p "$PROJECT_PATH/src/components/consent"
        cp "$consent_template/ConsentBanner.astro" "$PROJECT_PATH/src/components/consent/" 2>/dev/null || true
        cp "$consent_template/stores/"* "$PROJECT_PATH/src/stores/" 2>/dev/null || true

        mkdir -p "$PROJECT_PATH/src/pages/api"
        cp "$consent_template/api/consent.ts" "$PROJECT_PATH/src/pages/api/" 2>/dev/null || true

        mkdir -p "$PROJECT_PATH/db"
        cp "$consent_template/db/config.ts" "$PROJECT_PATH/db/" 2>/dev/null || true
    fi

    log_success "Consent system added"
}

copy_legal_templates() {
    log_info "Copying PDPA legal templates..."

    mkdir -p "$PROJECT_PATH/src/content/pages"

    if [ -f "$SKILL_DIR/templates/privacy-policy.md" ]; then
        cp "$SKILL_DIR/templates/privacy-policy.md" "$PROJECT_PATH/src/content/pages/"
    fi

    if [ -f "$SKILL_DIR/templates/terms-of-service.md" ]; then
        cp "$SKILL_DIR/templates/terms-of-service.md" "$PROJECT_PATH/src/content/pages/"
    fi

    log_success "Legal templates copied"
}

install_dependencies() {
    log_info "Installing dependencies..."

    cd "$PROJECT_PATH"
    npm install

    log_success "Dependencies installed"
}

setup_environment() {
    log_info "Setting up environment..."

    cd "$PROJECT_PATH"

    if [ ! -f ".env" ]; then
        if [ -f ".env.example" ]; then
            cp .env.example .env
            log_success "Created .env from .env.example"
        else
            cat > .env << 'EOF'
PUBLIC_SITE_URL=http://localhost:4321
TINA_TOKEN=your-tina-token
EOF
            log_success "Created default .env"
        fi
    fi
}

init_git() {
    log_info "Initializing git..."

    cd "$PROJECT_PATH"

    if [ ! -d ".git" ]; then
        git init
        git add .
        git commit -m "Initial commit: Astro + Tina CMS starter"
        log_success "Git initialized"
    fi
}

show_structure() {
    log_info "Project structure:"
    cd "$PROJECT_PATH"
    echo ""
    find . -type f \( -name "*.ts" -o -name "*.tsx" -o -name "*.astro" -o -name "*.mjs" -o -name "*.css" -o -name "*.md" -o -name "package.json" \) 2>/dev/null | grep -v node_modules | sort | head -30
}

main() {
    echo "=============================================="
    echo "  Astro + Tina CMS Project Creator"
    echo "=============================================="
    echo ""

    if [ "$1" == "-h" ] || [ "$1" == "--help" ]; then
        print_usage
        exit 0
    fi

    check_requirements
    setup_directory
    copy_template
    copy_consent_system
    copy_legal_templates
    install_dependencies
    setup_environment
    init_git
    show_structure

    echo ""
    echo "=============================================="
    log_success "Project created successfully!"
    echo "=============================================="
    echo ""
    echo "Next steps:"
    echo "  1. cd $PROJECT_PATH"
    echo "  2. npm run dev"
    echo "  3. Open http://localhost:4321"
    echo ""
    echo "For Tina CMS admin:"
    echo "  - npm run dev"
    echo "  - Visit http://localhost:4321/admin"
    echo ""
}

main "$@"