#!/usr/bin/env bash

set -euo pipefail

# ensure dir
cd -P -- "$(dirname -- "$0")/.."

help() {
    echo
    echo "-h|--help:       To display this usage info"
    echo "--json:          Print apps in json"
    echo "-ct fast|docker: Only find apps for CT"
}

WANT_JSON='no'
CT='novalue'
while [ "$#" -gt 0 ]; do
    case $1 in
        -h|--help)
            help
            exit 0
            ;;
        --json)
            WANT_JSON='yes'
            shift 1
            ;;
        --ct)
            CT="$2"
            shift 2
            ;;
        *)
            echo "unknown option $1"
            exit 1
            ;;
    esac
done

if [ "$(./scripts/get-distro.sh)" = 'windows' ]; then
    # Otherwise windows may resolve to find.exe
    FIND="/usr/bin/find"
else
    FIND='find'
fi

find_app() {
    local appdir="$1"
    "$FIND" "${appdir}" -mindepth 1 -maxdepth 1 -type d
}

EM="emqx"
SHARED="$(find_app 'apps')"
if [ -f 'EMQX_ENTERPRISE' ]; then
    LIB="$(find_app 'lib-ee')"
else
    LIB="$(find_app 'lib-ce')"
fi
## find directories in lib-extra
LIBE="$(find_app 'lib-extra')"
## find symlinks in lib-extra
LIBES="$("$FIND" 'lib-extra' -mindepth 1 -maxdepth 1 -type l -exec test -e {} \; -print)"

APPS_ALL="$(echo -e "${EM}\n${SHARED}\n${LIB}\n${LIBE}\n${LIBES}")"

if [ "$CT" = 'novalue' ]; then
    RESULT="${APPS_ALL}"
else
    APPS_NORMAL_CT=( )
    APPS_DOCKER_CT=( )
    for app in ${APPS_ALL}; do
        if [ "$app" = 'apps/emqx_plugin_libs' ]; then
            # This app has no test SUITE
            continue
        fi
        if [ -f "${app}/docker-ct" ]; then
            APPS_DOCKER_CT+=("$app")
        else
            APPS_NORMAL_CT+=("$app")
        fi
    done
    if [ "$CT" = 'docker' ]; then
        RESULT="${APPS_DOCKER_CT[*]}"
    else
        RESULT="${APPS_NORMAL_CT[*]}"
    fi
fi

if [ "$WANT_JSON" = 'yes' ]; then
    echo "${RESULT}" | xargs | tr -d '\n' | jq -R -s -c 'split(" ")'
else
    echo "${RESULT}"
fi