import type { PlatformErrorDialogPayload } from './PlatformErrorDialog';
import type { PlatformTaskCompletionDialogPayload } from './PlatformTaskCompletionDialog';

export type PlatformErrorDialogState = PlatformErrorDialogPayload & {
  key: string;
};

export type PlatformTaskFailureDialogState = PlatformErrorDialogState & {
  failedAtMs: number;
};

export type PlatformTaskCompletionDialogState =
  PlatformTaskCompletionDialogPayload & {
    key: string;
    completedAtMs: number | null;
  };

export type PlatformDialogCandidate = {
  key: string;
  source: string;
  message: string | null | undefined;
};

export const PLATFORM_TASK_COMPLETION_MESSAGE =
  '生成任务已完成，可以继续查看草稿。';

/** 收口平台弹窗候选的纯状态规则，壳层只负责副作用清理。 */
export function normalizePlatformDialogMessage(
  message: string | null | undefined,
) {
  const normalized = message?.trim();
  return normalized ? normalized : null;
}

export function formatPlatformDialogSource(label: string, id?: string | null) {
  const normalizedId = id?.trim();
  return normalizedId ? `${label} ${normalizedId}` : label;
}

export function isBackgroundGenerationStillRunningMessage(message: string) {
  return /仍在后台处理|后台仍在处理|仍在生成|后台生成/u.test(message);
}

export function resolvePlatformErrorDialog(
  candidates: readonly PlatformDialogCandidate[],
): PlatformErrorDialogState | null {
  for (const candidate of candidates) {
    const message = normalizePlatformDialogMessage(candidate.message);
    if (message) {
      return {
        key: candidate.key,
        source: candidate.source,
        message,
      };
    }
  }

  return null;
}

export function buildPlatformErrorDialogDismissKey(
  error: PlatformErrorDialogState | null,
) {
  return error ? `${error.key}:${error.source}:${error.message}` : null;
}

export function buildPlatformTaskCompletionDialogDismissKey(
  completion: PlatformTaskCompletionDialogState | null,
) {
  return completion
    ? `${completion.key}:${completion.source}:${completion.message}:${completion.completedAtMs ?? 0}`
    : null;
}

export function resolveActivePlatformDialog<TDialog>(
  currentDialog: TDialog | null,
  dismissedDialogKey: string | null,
  buildDismissKey: (dialog: TDialog | null) => string | null,
): TDialog | null {
  const currentDialogDismissKey = buildDismissKey(currentDialog);
  return currentDialogDismissKey &&
    currentDialogDismissKey === dismissedDialogKey
    ? null
    : currentDialog;
}