import { createUserDataSpaceService } from './user-data-space-service.mjs';
import { ensureHealthPageDataForUser } from './health-page-data-bootstrap.mjs';
import { HEALTH_DOCUMENTS_DATASET } from './health-page-data-schema.mjs';
import { mapPgDocumentRow } from './health-page-data-map.mjs';

const DATASET_NAME = HEALTH_DOCUMENTS_DATASET.name;

export function createPageDataHealthDocumentStore({
  resolveWorkspaceRoot,
  logger = console,
} = {}) {
  if (typeof resolveWorkspaceRoot !== 'function') {
    throw new Error('createPageDataHealthDocumentStore requires resolveWorkspaceRoot');
  }

  async function getUserDataSpace(userId) {
    const workspaceRoot = await resolveWorkspaceRoot(userId);
    if (!workspaceRoot) return null;
    const service = createUserDataSpaceService({ workspaceRoot, userId: String(userId) });
    await ensureHealthPageDataForUser(service, userId);
    return service;
  }

  async function list(userId, { limit = 50 } = {}) {
    const service = await getUserDataSpace(userId);
    if (!service) return [];
    try {
      const result = await service.readDatasetRows(DATASET_NAME, {
        limit: Math.min(Math.max(limit, 1), 200),
        orderBy: 'created_at',
        orderDir: 'desc',
      });
      return (result.rows ?? []).map((row) => mapPgDocumentRow(row, userId));
    } catch (error) {
      if (error?.code === 'dataset_not_found') return [];
      throw error;
    }
  }

  async function insert(userId, document) {
    if (document?.confirmed !== true) {
      const error = Object.assign(new Error('报告必须确认归档后才能保存'), {
        code: 'health_document_unconfirmed',
      });
      throw error;
    }

    const service = await getUserDataSpace(userId);
    if (!service) {
      const error = Object.assign(new Error('用户健康数据空间不可用'), { code: 'health_storage_unavailable' });
      throw error;
    }

    const title = document.notes?.trim() || document.title?.trim() || '健康报告归档';
    const extractedMetrics = document.extractedMetrics ?? [];
    try {
      const { row } = await service.insertDatasetRow(DATASET_NAME, {
        doc_type: document.docType ?? 'other',
        report_date: document.reportDate ?? null,
        institution: document.institution ?? null,
        title,
        asset_id: document.assetId ?? null,
        ocr_text: document.ocrText ?? null,
        extracted_metrics: Array.isArray(extractedMetrics)
          ? JSON.stringify(extractedMetrics)
          : extractedMetrics,
        extraction_status: document.extractionStatus ?? 'pending',
      });
      const mapped = mapPgDocumentRow(row, userId);
      return {
        ...mapped,
        imageUrl: document.imageUrl ?? null,
        notes: document.notes ?? null,
        source: document.source ?? 'manual',
        ocrText: document.ocrText ?? null,
        extractedMetrics,
      };
    } catch (error) {
      logger.warn?.('Page Data health document insert failed:', error);
      throw error;
    }
  }

  return {
    backend: 'page_data',
    list,
    insert,
  };
}