#!/usr/bin/env bash

set -Eeuo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "${SCRIPT_DIR}/.." && pwd)"
OUTPUT_ROOT="${PROJECT_ROOT}/output/apps"
TARGET="${1:-all}"
PLATFORM="${2:-all}"

require_command() {
  local command_name="$1"
  if ! command -v "${command_name}" >/dev/null 2>&1; then
    echo "缺少命令：${command_name}" >&2
    exit 1
  fi
}

require_value() {
  local value_name="$1"
  local value="${!value_name:-}"
  if [[ -z "${value}" ]]; then
    echo "缺少环境变量：${value_name}" >&2
    exit 1
  fi
}

copy_output() {
  local source="$1"
  local target="$2"
  if [[ "${target}" != "${OUTPUT_ROOT}/"* ]]; then
    echo "拒绝清理非预期输出目录：${target}" >&2
    exit 1
  fi
  rm -rf "${target}"
  mkdir -p "${target}"
  cp -R "${source}/." "${target}/"
}

build_app() {
  local app_name="$1"
  local app_dir="${PROJECT_ROOT}/apps/${app_name}"
  local app_output="${OUTPUT_ROOT}/${app_name}"

  echo "开始构建：${app_name}"
  (
    cd "${app_dir}"
    flutter pub get
    flutter analyze
    flutter test

    if [[ "${PLATFORM}" == "all" || "${PLATFORM}" == "android" ]]; then
      flutter build apk --release --no-pub --dart-define="API_BASE_URL=${API_BASE_URL}"
      mkdir -p "${app_output}"
      cp "build/app/outputs/flutter-apk/app-release.apk" "${app_output}/${app_name}-release.apk"
    fi

    if [[ "${PLATFORM}" == "all" || "${PLATFORM}" == "web" ]]; then
      flutter build web --release --no-pub --dart-define="API_BASE_URL=${API_BASE_URL}"
      copy_output "${app_dir}/build/web" "${app_output}/web"
    fi
  )
  echo "构建完成：${app_name}"
}

if [[ "${TARGET}" != "all" && "${TARGET}" != "user_app" && "${TARGET}" != "service_app" ]]; then
  echo "应用参数只能是 all、user_app 或 service_app。" >&2
  exit 1
fi
if [[ "${PLATFORM}" != "all" && "${PLATFORM}" != "android" && "${PLATFORM}" != "web" ]]; then
  echo "平台参数只能是 all、android 或 web。" >&2
  exit 1
fi

require_command flutter
require_value API_BASE_URL

if [[ "${PLATFORM}" == "all" || "${PLATFORM}" == "web" ]]; then
  flutter config --enable-web
fi

mkdir -p "${OUTPUT_ROOT}"
if [[ "${TARGET}" == "all" || "${TARGET}" == "user_app" ]]; then
  build_app user_app
fi
if [[ "${TARGET}" == "all" || "${TARGET}" == "service_app" ]]; then
  build_app service_app
fi

echo "产物目录：${OUTPUT_ROOT}"