#!/bin/bash
# Docker Installation Script for Archipelago
# This script installs Docker Desktop on macOS

set -e

echo "============================================"
echo "Docker Desktop Installation"
echo "============================================"
echo ""

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

# Check if Homebrew is installed
echo "Checking Homebrew..."
if ! command -v brew &> /dev/null; then
    echo -e "${YELLOW}Homebrew not found. Installing Homebrew first...${NC}"
    /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
    
    # Add Homebrew to PATH for Apple Silicon
    if [[ $(uname -m) == 'arm64' ]]; then
        echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> ~/.zprofile
        eval "$(/opt/homebrew/bin/brew shellenv)"
    fi
    echo -e "${GREEN}✓ Homebrew installed${NC}"
else
    echo -e "${GREEN}✓ Homebrew already installed${NC}"
fi

echo ""

# Check if Docker is already installed
echo "Checking Docker..."
if command -v docker &> /dev/null; then
    echo -e "${GREEN}✓ Docker already installed ($(docker --version))${NC}"
    echo ""
    echo "Docker is already available. Checking if it's running..."
    if docker ps &> /dev/null; then
        echo -e "${GREEN}✓ Docker is running${NC}"
    else
        echo -e "${YELLOW}⚠ Docker is installed but not running${NC}"
        echo "Please start Docker Desktop from Applications"
    fi
    exit 0
fi

echo -e "${YELLOW}Installing Docker Desktop...${NC}"
echo "This may take a few minutes..."
echo ""

# Install Docker using Homebrew Cask
brew install --cask docker

echo ""
echo -e "${GREEN}✓ Docker Desktop installed${NC}"
echo ""

# Instructions to start Docker
echo "============================================"
echo "Next Steps"
echo "============================================"
echo ""
echo "1. Open Docker Desktop from Applications:"
echo "   - Open Finder > Applications > Docker"
echo "   - Or press Cmd+Space and type 'Docker'"
echo ""
echo "2. Docker Desktop will start and you'll see a whale icon in your menu bar"
echo ""
echo "3. Wait for Docker to finish starting (the whale icon will stop animating)"
echo ""
echo "4. Verify Docker is running:"
echo "   docker --version"
echo "   docker ps"
echo ""
echo "5. Then you can continue with Archipelago setup"
echo ""

echo "============================================"
echo "Alternative: Using Podman (Recommended)"
echo "============================================"
echo ""
echo "Archipelago is designed to work with Podman, which is:"
echo "  - Lighter weight than Docker"
echo "  - Rootless (more secure)"
echo "  - Drop-in replacement for Docker"
echo ""
echo "To install Podman instead, run:"
echo "  ./INSTALL.sh"
echo ""
echo "This will install all dependencies including Podman."
echo ""