#!/usr/bin/env bash

set -eu

die() {
    echo >&2 "$@"
    exit 1
}

# shellcheck disable=SC1007
TEST_DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
# shellcheck source=./.environment.sh
. "${TEST_DIR}/.environment.sh"


check_bats_core() {
    if ! "${TEST_DIR}/lib/bats-core/bin/bats" --version >/dev/null 2>&1; then
        die "ERROR: bats-core submodule is required. Please run 'git submodule init; git submodule update' and retry."
    fi
}

check_python3() {
    if ! command -v python3 >/dev/null; then
        die "missing required program 'python3'"
    fi
}

check_jq() {
    # shellcheck disable=SC2016
    if ! command -v jq >/dev/null; then
        die "Missing required program 'jq'"
    fi
}

check_nc() {
    if ! command -v nc >/dev/null; then
        die "missing required program 'nc' (package 'netcat-openbsd')"
    fi
}

check_yq() {
    # shellcheck disable=SC2016
    howto_install='You can install it with your favorite package manager (including snap) or with "GO111MODULE=on go get github.com/mikefarah/yq/v4" and add ~/go/bin to $PATH.'
    if ! command -v yq >/dev/null; then
        die "Missing required program 'yq'. $howto_install"
    fi
    if ! (yq --version | grep mikefarah >/dev/null); then
        die "yq exists but it's not the one we need (mikefarah/yq). $howto_install"
    fi
}

check_daemonizer() {
    SYSTEM=$(uname -s)
    case "${SYSTEM,,}" in
        linux)
            if ! command -v daemonize >/dev/null; then
                die "missing required program 'daemonize' (package 'daemonize')"
            fi
            ;;
        freebsd)
            if ! command -v daemon >/dev/null; then
                die "missing required program 'daemon'"
            fi
            ;;
        *)
            die "unsupported system: $SYSTEM"
            ;;
    esac
}

check_gocovmerge() {
    if ! command -v gocovmerge >/dev/null; then
        die "missing required program 'gocovmerge'. You can install it with \"go install github.com/wadey/gocovmerge@latest\""
    fi
}

check_bats_core
check_daemonizer
check_jq
check_nc
check_python3
check_yq
if [ -n "${TEST_COVERAGE}" ]; then
    check_gocovmerge
fi