#! /usr/bin/bash

#echo "-- " "$0" "$@" "(utils)"

function help() {
    echo "$(basename "$0") SUBCOMMAND"
    echo "  test: run the test suite using this runner"
    echo "  deps-check: check for this runner's dependencies"
}

function depsCheck() {
    # Explicit arguments, or $DEPENDENCIES
    echo "-- Dependency checks for "$(basename "$0")""
    if [ ! $# -eq 0 ]; then
        DEPS=("$@")
    else
        DEPS=("${DEPENDENCIES[@]}")
    fi
    MISSING=()
    for i in "${DEPS[@]}"; do
        if ! command -v "$i" >/dev/null 2>&1; then
            MISSING+=("$i")
        fi
    done
    if [ ${#MISSING[@]} -gt 0 ]; then
        echo "ERROR: missing dependencies: "${MISSING[@]}""
        return 1
    fi
}

function subcommand() {
    SUBCOMMAND="${1:-test}"
    #echo "  Subcommand "$1" evaluated to "$SUBCOMMAND""
    case "$SUBCOMMAND" in
        "help"|"--help"|"-h")
            help
            return 1
            ;;
        "deps-check")
            depsCheck
            return $?
            ;;
        "test")
            echo "Running tests from "$QBTNOX_DIR""
            return $?
            ;;
        *)
            echo "$(basename "$0") ERROR: wrong subcommand "$SUBCOMMAND""
            return 2
            ;;
    esac
}

# $1 exit code
# $2 reason
# $3 orig dir to return to
function abortIfError() {
    if [ ! $1 -eq 0 ]; then
        cd "$ORIGDIR"
        echo "$2"
        #set +x
        if [ $# -eq 3 ]; then
            cd "$3"
        fi
        exit $1
    fi
}

# finds a free TCP port
# https://stackoverflow.com/questions/28989069/how-to-find-a-free-tcp-port/45539101#45539101
function findFreePort() {
    BASE_PORT=16998
    INCREMENT=1

    port=$BASE_PORT
    isfree=$(netstat -taln | grep $port)

    while [[ -n "$isfree" ]]; do
        port=$[port+INCREMENT]
        isfree=$(netstat -taln | grep $port)
    done

    echo "$port"
}

# runTests APIADDR
function runTests {
    echo "Running tests at "$1""
    if bats ../units/; then
        echo "OK"
    else
        echo "FAIL"
    fi
}