#! /usr/bin/env bash

set -euo pipefail

function usage() {
    echo "Usage: bin/error-logs [OPTIONS] [SERVICES...]"
    echo ""
    echo "Services:  chat, clsi, contacts, docstore, document-updater,"
    echo "           filestore, notifications, real-time, spelling,"
    echo "           tags, track-changes, web"
    echo ""
    echo "Options:"
    echo "  -f              follow log output"
    echo "  -n {number}     number of lines to print (default 20)"
    echo ""
    echo "Examples:"
    echo ""
    echo "    bin/error-logs -n 50 web clsi"
    echo ""
    echo "    bin/error-logs -f web"
    echo ""
    echo "    bin/error-logs -f web chat docstore"
    echo ""
    echo "    bin/error-logs -n 100 -f filestore "
    echo ""
    echo "    bin/error-logs -f"
}

function __main__() {
    if [[ "${1:-null}" == "help" ]] || [[ "${1:-null}" == "--help" ]]; then
        usage
        exit
    fi
    # preserve the '==>' labels from tail output
    bin/logs "$@" | grep -E '(^==>.*$|^.*level":50.*$)' --color=never
}

__main__ "$@"