#!/bin/bash
# DevMonk Connect Installer
# curl -fsSL https://get.devops-monk.com | bash
set -euo pipefail

GREEN="\033[0;32m"; YELLOW="\033[1;33m"; RED="\033[0;31m"; NC="\033[0m"
info()  { echo -e "${GREEN}[DevMonk]${NC} $*"; }
warn()  { echo -e "${YELLOW}[DevMonk]${NC} $*"; }
error() { echo -e "${RED}[DevMonk]${NC} $*" >&2; exit 1; }

BASE="https://get.devops-monk.com"
OS=$(uname -s | tr '[:upper:]' '[:lower:]')
ARCH=$(uname -m)
case "$ARCH" in
  x86_64)       ARCH="amd64" ;;
  aarch64|arm64) ARCH="arm64" ;;
  armv7l)       ARCH="armv7" ;;
  *)            error "Unsupported architecture: $ARCH" ;;
esac

info "Platform: ${OS}/${ARCH}"
URL="${BASE}/devmonk-agent-${OS}-${ARCH}"

info "Downloading DevMonk Connect v0.7.0..."
curl -fsSL "$URL" -o /tmp/devmonk-agent || error "Download failed — binary not available for ${OS}/${ARCH} yet"
chmod +x /tmp/devmonk-agent

# Install binary
sudo mv /tmp/devmonk-agent /usr/local/bin/devmonk-agent

# Linux: install as systemd service
if [ "$OS" = "linux" ] && command -v systemctl &>/dev/null; then
    sudo mkdir -p /var/lib/devmonk-agent

    # Write config if it doesn't exist
    if [ ! -f /etc/devmonk-agent.yaml ]; then
        sudo tee /etc/devmonk-agent.yaml > /dev/null << 'CONFIG'
agent:
  listen_addr: "0.0.0.0:7474"
  data_dir: "/var/lib/devmonk-agent"
  log_level: "info"

ddns:
  enabled: false
CONFIG
    fi

    sudo tee /etc/systemd/system/devmonk-agent.service > /dev/null << 'SERVICE'
[Unit]
Description=DevMonk Connect Agent
After=network.target
Wants=network.target

[Service]
Type=simple
ExecStart=/usr/local/bin/devmonk-agent --config /etc/devmonk-agent.yaml
Restart=on-failure
RestartSec=5
User=root
WorkingDirectory=/var/lib/devmonk-agent
StandardOutput=journal
StandardError=journal

[Install]
WantedBy=multi-user.target
SERVICE

    sudo systemctl daemon-reload
    sudo systemctl enable devmonk-agent
    sudo systemctl restart devmonk-agent

    sleep 2
    if systemctl is-active --quiet devmonk-agent; then
        info "DevMonk Connect is running!"
        info "Open http://$(hostname -I | awk '{print $1}'):7474 to set up your account"
    else
        warn "Service may not have started — check: journalctl -u devmonk-agent -f"
    fi
else
    info "DevMonk Connect installed to /usr/local/bin/devmonk-agent"
    info "Run: devmonk-agent"
    info "Then open http://localhost:7474"
fi