#!/usr/bin/env bash
###############################################################################
# Push local status checks to Uptime Kuma
# Requires: bash ≥4, curl, yq (mikefarah/go-yq), optional docker & systemd
###############################################################################
set -Eeuo pipefail

CFG="/opt/kuma-checks.yaml"
BASE="https://status.jordanwages.com/api/push"
CURL_OPTS=(--silent --show-error --max-time 4)

# --------------------------------------------------------------------------- #
# Small random delay so many VMs don't hammer Kuma at the same second
sleep $(( RANDOM % 5 ))    # 0-4 s
# --------------------------------------------------------------------------- #

push() {                    # id status msg ping
  curl "${CURL_OPTS[@]}" \
       "${BASE}/${1}?status=${2}&msg=${3// /%20}&ping=${4}" \
       || true              # don't let a failed push abort the script
}

check_http() {              # url
  local start code
  start=$(date +%s%3N)
  code=$(curl "${CURL_OPTS[@]}" -o /dev/null -w '%{http_code}' "$1" || echo 000)
  echo "$([[ $code =~ ^2|3 ]] && echo up || echo down) $(( $(date +%s%3N)-start ))"
}

check_service() { systemctl is-active --quiet "$1" && echo "up 0" || echo "down 0"; }
check_docker()  { docker inspect -f '{{.State.Running}}' "$1" &>/dev/null && echo "up 0" || echo "down 0"; }
check_mount()   { mountpoint -q "$1" && echo "up 0" || echo "down 0"; }
check_native()  { echo "up 0"; }   # simply reports "alive"

# --------------------------------------------------------------------------- #
# Iterate over YAML entries (null-delimited to survive spaces)
while IFS= read -r -d '' line; do
  name=$(yq eval '.name'   <<<"$line")
  type=$(yq eval '.type'   <<<"$line")
  tgt=$(yq  eval '.target' <<<"$line")
  id=$(yq   eval '.push'   <<<"$line")

  case $type in
    http)    read -r stat ping < <(check_http    "$tgt") ;;
    service) read -r stat ping < <(check_service "$tgt") ;;
    docker)  read -r stat ping < <(check_docker  "$tgt") ;;
    mount)   read -r stat ping < <(check_mount   "$tgt") ;;
    native)  read -r stat ping < <(check_native)         ;;
    *)       stat=down ping=0 ;;
  esac

  push "$id" "$stat" "$name" "$ping"
done < <(yq eval '.checks[] | @json' -o=json -I0 "$CFG" | tr '\n' '\0')
# --------------------------------------------------------------------------- #