#!/bin/bash
set -e

# Remotifex Install Script
# Usage: curl -fsSL https://get.remotifex.com | sh

REMOTIFEX_DIR="${REMOTIFEX_DIR:-/opt/remotifex}"
REPO_URL="https://github.com/remotifex/remotifex.git"

echo ""
echo "  ╔══════════════════════════════════════╗"
echo "  ║          Remotifex Installer          ║"
echo "  ║   AI-Powered Development Platform     ║"
echo "  ╚══════════════════════════════════════╝"
echo ""

# Check for required tools
check_requirements() {
    local missing=()

    if ! command -v docker &> /dev/null; then
        missing+=("docker")
    fi

    if ! command -v docker compose &> /dev/null && ! command -v docker-compose &> /dev/null; then
        missing+=("docker-compose")
    fi

    if ! command -v git &> /dev/null; then
        missing+=("git")
    fi

    if [ ${#missing[@]} -gt 0 ]; then
        echo "Missing required tools: ${missing[*]}"
        echo ""
        echo "Please install them first:"
        echo "  Docker: https://docs.docker.com/engine/install/"
        echo "  Git:    sudo apt-get install git"
        exit 1
    fi

    echo "[OK] All requirements met"
}

# Generate random secret
generate_secret() {
    openssl rand -base64 32 2>/dev/null || head -c 32 /dev/urandom | base64
}

# Detect public IP
detect_ip() {
    # Try external service
    local ip
    ip=$(curl -s --max-time 5 https://api.ipify.org 2>/dev/null) && echo "$ip" && return
    # Fallback: hostname -based
    ip=$(hostname -I 2>/dev/null | awk '{print $1}') && [ -n "$ip" ] && echo "$ip" && return
    echo "localhost"
}

# Clone or update repository
setup_repo() {
    if [ -d "$REMOTIFEX_DIR" ]; then
        echo "[..] Updating existing installation..."
        cd "$REMOTIFEX_DIR"
        git pull --ff-only
    else
        echo "[..] Cloning Remotifex..."
        git clone "$REPO_URL" "$REMOTIFEX_DIR"
        cd "$REMOTIFEX_DIR"
    fi
    echo "[OK] Repository ready"
}

# Create .env file
setup_env() {
    if [ -f "$REMOTIFEX_DIR/.env" ]; then
        echo "[OK] .env file already exists, keeping it"
        return
    fi

    echo "[..] Creating .env configuration..."

    JWT_SECRET=$(generate_secret)
    ENCRYPTION_KEY=$(generate_secret)

    cat > "$REMOTIFEX_DIR/.env" << EOF
# Remotifex Configuration
# Generated by install script on $(date -u +"%Y-%m-%dT%H:%M:%SZ")
# All settings are managed via the web UI — no need to edit this file.

# Security (auto-generated)
JWT_SECRET=${JWT_SECRET}
ENCRYPTION_KEY=${ENCRYPTION_KEY}

# MongoDB
MONGODB_URL=mongodb://mongo:27017/remotifex

# Redis
REDIS_URL=redis://redis:6379/0

# Data directory
PROJECTS_DATA_DIR=/data/projects
EOF

    chmod 600 "$REMOTIFEX_DIR/.env"
    echo "[OK] .env created with generated secrets"
}

# Build and start services
start_services() {
    echo "[..] Building and starting Remotifex..."
    cd "$REMOTIFEX_DIR"
    docker compose build
    docker compose up -d
    echo "[OK] All services started"
}

# Main
echo "Step 1/4: Checking requirements..."
check_requirements

echo ""
echo "Step 2/4: Setting up repository..."
setup_repo

echo ""
echo "Step 3/4: Configuring environment..."
setup_env

echo ""
echo "Step 4/4: Starting services..."
start_services

SERVER_IP=$(detect_ip)

echo ""
echo "  ╔══════════════════════════════════════╗"
echo "  ║       Remotifex is running!          ║"
echo "  ╚══════════════════════════════════════╝"
echo ""
echo "  Open http://${SERVER_IP} in your browser"
echo "  Complete the setup wizard to get started."
echo ""
echo "  Domains, AI keys, and all other settings"
echo "  are configured via the web UI."
echo ""
echo "  To update Remotifex:"
echo "    cd $REMOTIFEX_DIR && git pull && docker compose up -d --build"
echo ""