#!/bin/bash
set -e

### BASIC CHECKS ###
if [ "$EUID" -ne 0 ]; then
    echo "❌ Please run this script as root"
    exit 1
fi

echo "🔍 Detecting Linux distribution..."

if [ -f /etc/os-release ]; then
    . /etc/os-release
else
    echo "❌ Cannot detect Linux distribution"
    exit 1
fi

OS_ID="$ID"
OS_VERSION="$VERSION_ID"

echo "🖥️  Detected: $PRETTY_NAME"

### DETERMINE PACKAGE MANAGER ###
case "$OS_ID" in
    ubuntu|debian)
        PM="apt"
        ;;
    almalinux|rocky|centos|rhel)
        PM="dnf"
        ;;
    *)
        echo "❌ Unsupported OS: $OS_ID"
        exit 1
        ;;
esac

### INSTALL DEPENDENCIES ###
echo "📦 Installing base dependencies..."

if [ "$PM" = "apt" ]; then
    apt update
    apt install -y \
        ca-certificates \
        curl \
        gnupg \
        lsb-release \
        git
elif [ "$PM" = "dnf" ]; then
    dnf install -y \
        ca-certificates \
        curl \
        gnupg2 \
        git
fi

### INSTALL DOCKER ###
if ! command -v docker >/dev/null 2>&1; then
    echo "🐳 Installing Docker..."

    curl -fsSL https://get.docker.com | sh
else
    echo "✅ Docker already installed"
fi

systemctl enable docker
systemctl start docker

### INSTALL DOCKER COMPOSE (PLUGIN) ###
if ! docker compose version >/dev/null 2>&1; then
    echo "🔧 Installing Docker Compose plugin..."

    mkdir -p /usr/local/lib/docker/cli-plugins

    curl -SL https://github.com/docker/compose/releases/download/v2.25.0/docker-compose-linux-x86_64 \
        -o /usr/local/lib/docker/cli-plugins/docker-compose

    chmod +x /usr/local/lib/docker/cli-plugins/docker-compose
else
    echo "✅ Docker Compose already installed"
fi

### INSTALL CONVOY ###
echo "🚀 Installing Convoy Panel..."

INSTALL_DIR="/opt/convoy"

if [ -d "$INSTALL_DIR" ]; then
    echo "❌ $INSTALL_DIR already exists"
    exit 1
fi

git clone https://github.com/convoypanel/convoy.git "$INSTALL_DIR"
cd "$INSTALL_DIR"

### ENV SETUP ###
if [ ! -f .env ]; then
    cp .env.example .env
    echo "📝 Created .env file"
fi

### START SERVICES ###
echo "⚙️  Starting Convoy..."
docker compose up -d

### DONE ###
echo
echo "✅ Convoy Panel installation complete!"
echo "🌐 Access it via: http://YOUR_SERVER_IP"
echo
echo "ℹ️  Edit configuration: $INSTALL_DIR/.env"
echo "🔁 Restart: docker compose restart"