#!/usr/bin/env bash

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
readonly SCRIPT_DIR
PSYSH_ROOT="$(cd "${SCRIPT_DIR}/.." && pwd)"
readonly PSYSH_ROOT
readonly DEFAULT_PROJECTS_TIER1=("laravel-tinker" "laravel-web-tinker")
readonly DEFAULT_PROJECTS_ALL=("laravel-tinker" "laravel-web-tinker" "drush" "codeception" "magerun2" "cakephp-repl" "composer-repl-lib" "bdf-prime-shell")
readonly OVERRIDE_VERSION="${DOWNSTREAM_PSYSH_VERSION:-0.12.99}"

usage() {
    cat <<'USAGE'
Usage:
  scripts/test-downstream <project-id>
  scripts/test-downstream tier1
  scripts/test-downstream all
  scripts/test-downstream --list

Project IDs:
  laravel-tinker
  laravel-web-tinker
  drush
  codeception
  magerun2
  cakephp-repl
  composer-repl-lib
  bdf-prime-shell
USAGE
}

list_projects() {
    printf '%s\n' "${DEFAULT_PROJECTS_ALL[@]}"
}

retry() {
    local -r attempts="$1"
    shift

    local try=1
    until "$@"; do
        if [[ "${try}" -ge "${attempts}" ]]; then
            echo "    FAILED after ${attempts} attempts: $*" >&2
            return 1
        fi

        try=$((try + 1))
        echo "    Retrying (${try}/${attempts}): $*" >&2
        sleep 2
    done
}

version_lt() {
    [[ "$(printf '%s\n%s\n' "$1" "$2" | sort -V | head -n 1)" != "$2" ]]
}

resolve_project() {
    case "$1" in
        laravel-tinker)
            repo="laravel/tinker"
            ref="2.x"
            test_command="vendor/bin/phpunit"
            min_php="7.2"
            ;;
        laravel-web-tinker)
            repo="spatie/laravel-web-tinker"
            ref="main"
            test_command="composer test"
            min_php="8.2"
            ;;
        drush)
            repo="drush-ops/drush"
            ref="14.x"
            test_command="composer unit"
            min_php="8.3"
            ;;
        codeception)
            repo="Codeception/Codeception"
            ref="main"
            test_command="./codecept run unit"
            min_php="8.2"
            ;;
        magerun2)
            repo="netz98/n98-magerun2"
            ref="develop"
            test_command="vendor/bin/phpunit"
            min_php="8.0"
            ;;
        cakephp-repl)
            repo="cakephp/repl"
            ref="master"
            test_command="vendor/bin/phpunit"
            min_php="7.2"
            ;;
        composer-repl-lib)
            repo="ramsey/composer-repl-lib"
            ref="main"
            test_command="vendor/bin/phpunit"
            min_php="8.1"
            ;;
        bdf-prime-shell)
            repo="b2pweb/bdf-prime-shell"
            ref="master"
            test_command="vendor/bin/phpunit"
            min_php="7.1"
            ;;
        *)
            echo "Unknown project ID: $1" >&2
            return 1
            ;;
    esac
}

run_one_project() {
    local -r project="$1"
    local repo ref test_command min_php

    resolve_project "${project}"

    local -r current_php="$(php -r 'echo PHP_MAJOR_VERSION.".".PHP_MINOR_VERSION;')"
    if version_lt "${current_php}" "${min_php}"; then
        echo
        echo "==> ${project}"
        echo "    repo: ${repo} (${ref})"
        echo "    test: ${test_command}"
        echo "    skipped: requires PHP >= ${min_php}, current PHP is ${current_php}"

        return 0
    fi

    local -r psysh_path="${PSYSH_PATH:-${PSYSH_ROOT}}"
    local -r tmp_dir="$(mktemp -d)"
    local -r work_dir="${tmp_dir}/${project}"
    local -r repo_config_json="{\"type\":\"path\",\"url\":\"${psysh_path}\",\"options\":{\"symlink\":true,\"versions\":{\"psy/psysh\":\"${OVERRIDE_VERSION}\"}}}"

    echo
    echo "==> ${project}"
    echo "    repo: ${repo} (${ref})"
    echo "    test: ${test_command}"

    (
        if [[ "${DOWNSTREAM_KEEP_TMP:-0}" == "1" ]]; then
            echo "    temp dir preserved: ${tmp_dir}"
        else
            # shellcheck disable=SC2064
            trap "rm -rf '${tmp_dir}'" EXIT
        fi

        retry 3 git clone --depth 1 --branch "${ref}" "https://github.com/${repo}.git" "${work_dir}"
        cd "${work_dir}"

        export COMPOSER_CACHE_DIR="${COMPOSER_CACHE_DIR:-${tmp_dir}/composer-cache}"
        mkdir -p "${COMPOSER_CACHE_DIR}"

        composer config repositories.psysh "${repo_config_json}"

        if [[ -f composer.lock ]]; then
            retry 3 composer update psy/psysh --with-all-dependencies --no-interaction --no-progress
        else
            retry 3 composer update --no-interaction --no-progress
        fi

        ${test_command}
    )
}

main() {
    local -a projects=()

    if [[ $# -ne 1 ]]; then
        usage
        exit 1
    fi

    case "$1" in
        --list)
            list_projects
            return
            ;;
        tier1)
            projects=("${DEFAULT_PROJECTS_TIER1[@]}")
            ;;
        all)
            projects=("${DEFAULT_PROJECTS_ALL[@]}")
            ;;
        -h|--help)
            usage
            return
            ;;
        *)
            projects=("$1")
            ;;
    esac

    for project in "${projects[@]}"; do
        run_one_project "${project}"
    done
}

main "$@"