#!/usr/bin/env bash
source <(curl -s https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/build.func)
# Copyright (c) 2021-2025 community-scripts ORG
# Author: tteck (tteckster)
# License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
# Source: https://prometheus.io/

# App Default Values
APP="Prometheus"
var_tags="monitoring"
var_cpu="1"
var_ram="2048"
var_disk="4"
var_os="debian"
var_version="12"
var_unprivileged="1"

# App Output & Base Settings
header_info "$APP"
base_settings

# Core
variables
color
catch_errors

function update_script() {
  header_info
  check_container_storage
  check_container_resources
  if [[ ! -f /etc/systemd/system/prometheus.service ]]; then
    msg_error "No ${APP} Installation Found!"
    exit
  fi
  RELEASE=$(curl -s https://api.github.com/repos/prometheus/prometheus/releases/latest | grep "tag_name" | awk '{print substr($2, 3, length($2)-4) }')
  if [[ ! -f /opt/${APP}_version.txt ]] || [[ "${RELEASE}" != "$(cat /opt/${APP}_version.txt)" ]]; then
    msg_info "Stopping ${APP}"
    systemctl stop prometheus
    msg_ok "Stopped ${APP}"

    msg_info "Updating ${APP} to v${RELEASE}"
    cd /opt
    wget -q https://github.com/prometheus/prometheus/releases/download/v${RELEASE}/prometheus-${RELEASE}.linux-amd64.tar.gz
    tar -xf prometheus-${RELEASE}.linux-amd64.tar.gz
    cp -rf prometheus-${RELEASE}.linux-amd64/prometheus prometheus-${RELEASE}.linux-amd64/promtool /usr/local/bin/
    rm -rf prometheus-${RELEASE}.linux-amd64 prometheus-${RELEASE}.linux-amd64.tar.gz
    echo "${RELEASE}" >/opt/${APP}_version.txt
    msg_ok "Updated ${APP} to v${RELEASE}"

    msg_info "Starting ${APP}"
    systemctl start prometheus
    msg_ok "Started ${APP}"
    msg_ok "Updated Successfully"
  else
    msg_ok "No update required. ${APP} is already at v${RELEASE}"
  fi
  exit
}

start
build_container
description

msg_ok "Completed Successfully!\n"
echo -e "${CREATING}${GN}${APP} setup has been successfully initialized!${CL}"
echo -e "${INFO}${YW} Access it using the following URL:${CL}"
echo -e "${TAB}${GATEWAY}${BGN}http://${IP}:9090${CL}"