Merge pull request #758 from cds-snc/feature/transmission_risk_level_…

…refactoring

Removing TRANSMISSION_RISK_LEVEL from .env and setting it as a const.

.env.example

@@ -7,7 +7,6 @@ SUBMIT_URL=https://submission.covidshield.app
 RETRIEVE_URL=https://retrieval.covidshield.app
 HMAC_KEY=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 MCC_CODE=302
-TRANSMISSION_RISK_LEVEL=2
 
 TEST_MODE=false
 MOCK_SERVER=false

src/env/index.ts

@@ -18,8 +18,6 @@ export const HMAC_KEY = Config.HMAC_KEY;
 
 export const MCC_CODE = parseInt(Config.MCC_CODE, 10) || 302;
 
-export const TRANSMISSION_RISK_LEVEL = parseInt(Config.TRANSMISSION_RISK_LEVEL, 10);
-
 export const TEST_MODE = Config.TEST_MODE === 'true' || false;
 
 export const MOCK_SERVER = Config.MOCK_SERVER === 'true' || false;

src/services/BackendService/BackendService.ts

@@ -6,7 +6,7 @@ import {TemporaryExposureKey} from 'bridge/ExposureNotification';
 import nacl from 'tweetnacl';
 import {getRandomBytes, downloadDiagnosisKeysFile} from 'bridge/CovidShield';
 import {blobFetch} from 'shared/fetch';
-import {MCC_CODE, TRANSMISSION_RISK_LEVEL} from 'env';
+import {MCC_CODE} from 'env';
 import {captureMessage, captureException} from 'shared/log';
 import {getMillisSinceUTCEpoch} from 'shared/date-fns';
 
@@ -18,6 +18,7 @@ import {BackendInterface, SubmissionKeySet} from './types';
 
 const MAX_UPLOAD_KEYS = 14;
 const FETCH_HEADERS = {headers: {'Cache-Control': 'no-store'}};
+const TRANSMISSION_RISK_LEVEL = 1;
 
 // See https://github.com/cds-snc/covid-shield-server/pull/176
 const LAST_14_DAYS_PERIOD = '00000';
@@ -104,9 +105,7 @@ export class BackendService implements BackendInterface {
  keys: exposureKeys.map(key =>
  covidshield.TemporaryExposureKey.create({
  keyData: Buffer.from(key.keyData, 'base64'),
- transmissionRiskLevel:
- TRANSMISSION_RISK_LEVEL ||
- key.transmissionRiskLevel /* See transmissionRiskLevel https://developers.google.com/android/exposure-notifications/exposure-notifications-api#temporaryexposurekey */,
+ transmissionRiskLevel: TRANSMISSION_RISK_LEVEL,
  rollingStartIntervalNumber: key.rollingStartIntervalNumber,
  rollingPeriod: key.rollingPeriod,
  }),