All files / src/site siteDb.ts

97.73% Statements 43/44
92.86% Branches 13/14
100% Functions 12/12
97.56% Lines 40/41

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import { DocumentClient } from 'aws-sdk/clients/dynamodb';
import { v4 as uuidv4 } from 'uuid';
import {
  Site,
  SiteTableKeySchema,
  SiteConnection,
  CreateSiteInput,
} from '../types.d';
import { DeviceType } from '../devices/deviceTypes.d';
 
export class SiteDb {
  constructor(
    private readonly tableName: string,
    private readonly documentClient: DocumentClient,
    private readonly deviceTableName: string,
    private readonly siteUuidGsi: string,
  ) {}
 
  getSites = async (
    entityUuid: string,
    limit: number,
    nextToken?: DocumentClient.Key,
  ): Promise<SiteConnection> => {
    const params: DocumentClient.QueryInput = {
      TableName: this.tableName,
      KeyConditionExpression: 'entityUuid = :entityUuid',
      ExpressionAttributeValues: { ':entityUuid': entityUuid },
      Limit: limit,
    };
    if (nextToken) {
      params.ExclusiveStartKey = nextToken;
    }
    const outputItems = await this.documentClient.query(params).promise();
    Eif (outputItems.Items && outputItems.Items.length > 0) {
      const proms = outputItems.Items.map((item) => this.getSiteWithDevices(item));
      const sites = await Promise.all(proms);
      return {
        sites,
        nextToken: outputItems.LastEvaluatedKey as SiteTableKeySchema,
      };
    }
    return { sites: [] };
  };
 
  createSite = async (
    entityUuid: string,
    siteInput: CreateSiteInput,
  ): Promise<string> => {
    const site = {
      entityUuid,
      siteUuid: uuidv4(),
      name: siteInput.name,
      address: siteInput.address,
      state: siteInput.state,
    };
    const params: DocumentClient.PutItemInput = {
      TableName: this.tableName,
      Item: site,
    };
    await this.documentClient.put(params).promise();
    return site.siteUuid;
  };
 
  getSite = async (entityUuid: string, siteUuid: string): Promise<Site> => {
    const params: DocumentClient.QueryInput = {
      TableName: this.tableName,
      KeyConditionExpression:
        'entityUuid = :entityUuid AND siteUuid = :siteUuid',
      ExpressionAttributeValues: {
        ':entityUuid': entityUuid,
        ':siteUuid': siteUuid,
      },
    };
    console.log('query params:', params);
    const siteItem = await this.documentClient.query(params).promise();
    if (siteItem.Items && siteItem.Items.length > 0) {
      return this.getSiteWithDevices(siteItem.Items[0]);
    }
    console.log(`Cant find site (${siteUuid}) in entity (${entityUuid})`);
    throw new Error(`Cant find site (${siteUuid}).`);
  };
 
  getSiteWithDevices = async (
    siteItem: DocumentClient.AttributeMap,
  ): Promise<Site> => {
    const site: Site = {
      id: siteItem.siteUuid,
      name: siteItem.name,
      address: siteItem.address,
      state: siteItem.state,
      devices: [],
    };
    const deviceItems = await this.getSiteDevices(site.id);
    if (deviceItems.Items && deviceItems.Items.length > 0) {
      site.devices = deviceItems.Items.map((item) => ({
        id: item.id,
        model: item.model,
        serial: item.serial,
        name: item.name,
      }));
    }
    return site;
  };
 
  getSiteDevices = (siteUuid: string): Promise<DocumentClient.QueryOutput> => {
    const params: DocumentClient.QueryInput = {
      TableName: this.deviceTableName,
      IndexName: this.siteUuidGsi,
      KeyConditionExpression: 'siteUuid = :siteUuid AND #type = :type',
      ExpressionAttributeValues: {
        ':siteUuid': siteUuid,
        ':type': DeviceType.core,
      },
      ExpressionAttributeNames: { '#type': 'type' },
    };
    return this.documentClient.query(params).promise();
  };
}