#!/usr/bin/env bash
# healthcheck.sh — reports runner health for Docker HEALTHCHECK instruction
set -euo pipefail

RUNNER_CONFIG_PATH="${RUNNER_CONFIG_PATH:-/config/runner.yaml}"
exit_code=0

check_ok()   { echo "[HEALTH] OK   : $1"; }
check_warn() { echo "[HEALTH] WARN : $1"; }
check_fail() { echo "[HEALTH] FAIL : $1"; exit_code=1; }

# Runner process
if pgrep -x act_runner > /dev/null 2>&1; then
    check_ok "act_runner process is running"
else
    check_fail "act_runner process not found"
fi

# Config file
if [ -f "${RUNNER_CONFIG_PATH}" ]; then
    check_ok "Config file present at ${RUNNER_CONFIG_PATH}"
else
    check_warn "Config file not found at ${RUNNER_CONFIG_PATH}"
fi

# Required binaries
for bin in act_runner git node npm; do
    if command -v "$bin" &>/dev/null; then
        check_ok "Binary present: ${bin}"
    else
        check_fail "Binary missing: ${bin}"
    fi
done

# Docker socket (warn only — some label configurations don't need it)
if [ -S /var/run/docker.sock ]; then
    if docker info &>/dev/null 2>&1; then
        check_ok "Docker socket accessible"
    else
        check_warn "Docker socket present but not accessible (permission issue?)"
    fi
else
    check_warn "Docker socket not mounted — Docker build/push workflows will fail"
fi

exit $exit_code