#!/bin/sh
# install.sh - furt Installation and Update Orchestrator

set -e

# Parse command line arguments
UPGRADE_MODE=false
SKIP_USER=false
SKIP_SERVICE=false

while [ $# -gt 0 ]; do
    case "$1" in
        --upgrade) UPGRADE_MODE=true; shift ;;
        --skip-user) SKIP_USER=true; shift ;;
        --skip-service) SKIP_SERVICE=true; shift ;;
        --help)
            echo "Usage: $0 [--upgrade] [--skip-user] [--skip-service]"
            echo "  --upgrade     Update existing installation (skip user/service creation)"
            echo "  --skip-user   Skip user creation step"
            echo "  --skip-service Skip service creation step"
            exit 0
            ;;
        *) echo "Unknown option: $1"; exit 1 ;;
    esac
done

# Validate we're in furt source directory
if [ ! -f "src/main.lua" ] || [ ! -d "scripts" ]; then
    echo "Error: Not in furt source directory"
    echo "Expected files: src/main.lua, scripts/ directory"
    exit 1
fi

echo "=== furt Installation ==="
if [ "$UPGRADE_MODE" = "true" ]; then
    echo "Mode: Upgrade (preserving config and service)"
else
    echo "Mode: Fresh installation"
fi

# Step 1: Create system user (skip in upgrade mode)
if [ "$UPGRADE_MODE" = "false" ] && [ "$SKIP_USER" = "false" ]; then
    echo "\n[1/6] Creating system user..."
    ./scripts/setup-user.sh
else
    echo "\n[1/6] Skipping user creation (upgrade mode)"
fi

# Step 2: Setup directories
echo "\n[2/6] Setting up directories..."
./scripts/setup-directories.sh

# Step 3: Sync source files (always needed for updates)
echo "\n[3/6] Syncing source files..."
./scripts/sync-files.sh

# Step 4: Create service (skip in upgrade mode unless requested)
if [ "$UPGRADE_MODE" = "false" ] && [ "$SKIP_SERVICE" = "false" ]; then
    echo "\n[4/6] Creating system service..."
    ./scripts/create-service.sh
else
    echo "\n[4/6] Skipping service creation (upgrade mode)"
fi

# Step 5: Validate configuration
echo "\n[5/6] Validating configuration..."
if ./scripts/validate-config.sh; then
    echo "Configuration validation successful"
else
    echo "Warning: Configuration validation failed - manual setup may be needed"
fi

# Step 6: Health check
echo "\n[6/6] Performing health check..."
if ./scripts/health-check.sh >/dev/null 2>&1; then
    echo "Health check passed - furt is running"
else
    echo "Health check failed - service may need to be started manually"
fi

# Installation summary
echo "\n=== Installation Summary ==="
if [ "$UPGRADE_MODE" = "true" ]; then
    echo "furt upgrade completed successfully"
    echo ""
    echo "Source code updated to:"
    if [ -f "/usr/local/share/furt/VERSION" ]; then
        echo "  Version: $(cat /usr/local/share/furt/VERSION)"
    fi
    if [ -f "/usr/local/share/furt/.version_history" ]; then
        echo "  Version history available (for furt internal tracking)"
    fi
    echo ""
    echo "Service restart required:"
    if [ "$(uname)" = "OpenBSD" ]; then
        echo "  doas rcctl restart furt"
    else
        echo "  sudo systemctl restart furt"
    fi
else
    echo "furt installation completed successfully"
    echo ""
    echo "Next steps:"
    echo "1. Edit configuration file:"
    if [ "$(uname)" = "OpenBSD" ] || [ "$(uname)" = "FreeBSD" ]; then
        echo "   /usr/local/etc/furt/furt.conf"
    else
        echo "   /etc/furt/furt.conf"
    fi
    echo "2. Start the service:"
    if [ "$(uname)" = "OpenBSD" ]; then
        echo "   doas rcctl start furt"
    else
        echo "   sudo systemctl start furt"
    fi
    echo "3. Test the API:"
    echo "   curl http://127.0.0.1:7811/health"
fi

echo ""
echo "Installation log available in system logs"