#!/bin/bash
# Mempool backend health check — managed by Ansible (roles/mempool)
# The exit code is the answer; systemd keeps it. Reporting is optional.
PUSH_URL="${HEALTHCHECK_PUSH_URL:-}"
PUSH_TOKEN="${HEALTHCHECK_PUSH_TOKEN:-}"
BACKEND_PORT="{{ mempool_backend_port }}"

check() {
    curl -sf --max-time 5 "http://localhost:${BACKEND_PORT}/api/v1/backend-info" > /dev/null 2>&1
}

report() {
    [ -n "$PUSH_URL" ] || return 0
    # Gatus external endpoint: a POST with a bearer token, NOT Uptime Kuma's
    # GET with ?status=up. The callers still pass up/down, so the mapping is
    # done here rather than at every call site.
    local _ok=false
    [ "$1" = "up" ] && _ok=true
    curl -s --max-time 15 --retry 2 -o /dev/null -X POST \
        -H "Authorization: Bearer ${PUSH_TOKEN}" \
        "${PUSH_URL}?success=${_ok}&error=${2// /%20}" || true
}

if check; then report up "OK"; exit 0
else echo "Mempool backend not responding"; report down "Mempool backend not responding"; exit 1; fi