From f2ff5250b0f3efcd31ad7697bb3fa5deea33ca68 Mon Sep 17 00:00:00 2001
From: Dave Horton <daveh@beachdognet.com>
Date: Fri, 3 Feb 2023 13:36:14 -0500
Subject: [PATCH] reset variables like hints so that previous hints do not
 automatically carry over (#243)

---
 lib/utils/transcription-utils.js | 88 ++++++++++++++++++++++++++++++--
 1 file changed, 85 insertions(+), 3 deletions(-)

diff --git a/lib/utils/transcription-utils.js b/lib/utils/transcription-utils.js
index c98bc797..f7f89587 100644
--- a/lib/utils/transcription-utils.js
+++ b/lib/utils/transcription-utils.js
@@ -7,6 +7,86 @@ const {
   DeepgramTranscriptionEvents,
 } = require('./constants');
 
+const stickyVars = {
+  google: [
+    'GOOGLE_SPEECH_HINTS',
+    'GOOGLE_SPEECH_SEPARATE_RECOGNITION_PER_CHANNEL',
+    'GOOGLE_SPEECH_PROFANITY_FILTER',
+    'GOOGLE_SPEECH_ENABLE_AUTOMATIC_PUNCTUATION',
+    'GOOGLE_SPEECH_ENABLE_WORD_TIME_OFFSETS',
+    'GOOGLE_SPEECH_SINGLE_UTTERANCE',
+    'GOOGLE_SPEECH_SPEAKER_DIARIZATION',
+    'GOOGLE_SPEECH_USE_ENHANCED',
+    'GOOGLE_SPEECH_ALTERNATIVE_LANGUAGE_CODES',
+    'GOOGLE_SPEECH_METADATA_INTERACTION_TYPE',
+    'GOOGLE_SPEECH_METADATA_INDUSTRY_NAICS_CODE'
+  ],
+  microsoft: [
+    'AZURE_SPEECH_HINTS',
+    'AZURE_SERVICE_ENDPOINT_ID',
+    'AZURE_REQUEST_SNR',
+    'AZURE_PROFANITY_OPTION',
+    'AZURE_SERVICE_ENDPOINT',
+    'AZURE_INITIAL_SPEECH_TIMEOUT_MS',
+    'AZURE_USE_OUTPUT_FORMAT_DETAILED',
+  ],
+  deepgram: [
+    'DEEPGRAM_SPEECH_KEYWORDS',
+    'DEEPGRAM_API_KEY',
+    'DEEPGRAM_SPEECH_TIER',
+    'DEEPGRAM_SPEECH_MODEL',
+    'DEEPGRAM_SPEECH_ENABLE_AUTOMATIC_PUNCTUATION',
+    'DEEPGRAM_SPEECH_PROFANITY_FILTER',
+    'DEEPGRAM_SPEECH_REDACT',
+    'DEEPGRAM_SPEECH_DIARIZE',
+    'DEEPGRAM_SPEECH_NER',
+    'DEEPGRAM_SPEECH_ALTERNATIVES',
+    'DEEPGRAM_SPEECH_NUMERALS',
+    'DEEPGRAM_SPEECH_SEARCH',
+    'DEEPGRAM_SPEECH_REPLACE',
+    'DEEPGRAM_SPEECH_ENDPOINTING',
+    'DEEPGRAM_SPEECH_VAD_TURNOFF',
+    'DEEPGRAM_SPEECH_TAG'
+  ],
+  aws: [
+    'AWS_VOCABULARY_NAME',
+    'AWS_VOCABULARY_FILTER_METHOD',
+    'AWS_VOCABULARY_FILTER_NAME'
+  ],
+  nuance: [
+    'NUANCE_ACCESS_TOKEN',
+    'NUANCE_KRYPTON_ENDPOINT',
+    'NUANCE_TOPIC',
+    'NUANCE_UTTERANCE_DETECTION_MODE',
+    'NUANCE_FILTER_PROFANITY',
+    'NUANCE_INCLUDE_TOKENIZATION',
+    'NUANCE_DISCARD_SPEAKER_ADAPTATION',
+    'NUANCE_SUPPRESS_CALL_RECORDING',
+    'NUANCE_MASK_LOAD_FAILURES',
+    'NUANCE_SUPPRESS_INITIAL_CAPITALIZATION',
+    'NUANCE_ALLOW_ZERO_BASE_LM_WEIGHT',
+    'NUANCE_FILTER_WAKEUP_WORD',
+    'NUANCE_NO_INPUT_TIMEOUT_MS',
+    'NUANCE_RECOGNITION_TIMEOUT_MS',
+    'NUANCE_UTTERANCE_END_SILENCE_MS',
+    'NUANCE_MAX_HYPOTHESES',
+    'NUANCE_SPEECH_DOMAIN',
+    'NUANCE_FORMATTING',
+    'NUANCE_RESOURCES'
+  ],
+  ibm: [
+    'IBM_ACCESS_TOKEN',
+    'IBM_SPEECH_REGION',
+    'IBM_SPEECH_INSTANCE_ID',
+    'IBM_SPEECH_MODEL',
+    'IBM_SPEECH_LANGUAGE_CUSTOMIZATION_ID',
+    'IBM_SPEECH_ACOUSTIC_CUSTOMIZATION_ID',
+    'IBM_SPEECH_BASE_MODEL_VERSION',
+    'IBM_SPEECH_WATSON_METADATA',
+    'IBM_SPEECH_WATSON_LEARNING_OPT_OUT'
+  ]
+};
+
 const normalizeDeepgram = (evt, channel, language) => {
   const copy = JSON.parse(JSON.stringify(evt));
   const alternatives = (evt.channel?.alternatives || [])
@@ -198,7 +278,7 @@ module.exports = (logger) => {
           {GOOGLE_SPEECH_ALTERNATIVE_LANGUAGE_CODES: rOpts.altLanguages.join(',')}),
         ...(rOpts.interactionType &&
           {GOOGLE_SPEECH_METADATA_INTERACTION_TYPE: rOpts.interactionType}),
-        ...{GOOGLE_SPEECH_MODEL: rOpts.model || (task.name === TaskName.Gather ? 'command_and_search' : 'phone_call')},
+        ...{GOOGLE_SPEECH_MODEL: rOpts.model || (task.name === TaskName.Gather ? 'latest_short' : 'phone_call')},
         ...(rOpts.naicsCode > 0 &&
           {GOOGLE_SPEECH_METADATA_INDUSTRY_NAICS_CODE: rOpts.naicsCode}),
       };
@@ -333,7 +413,7 @@ module.exports = (logger) => {
         ...(deepgramOptions.vadTurnoff) &&
           {DEEPGRAM_SPEECH_VAD_TURNOFF: deepgramOptions.vadTurnoff},
         ...(deepgramOptions.tag) &&
-          {DEEPGRAM_SPEECH_VAD_TURNOFF: deepgramOptions.tag}
+          {DEEPGRAM_SPEECH_TAG: deepgramOptions.tag}
       };
     }
     else if ('ibm' === rOpts.vendor) {
@@ -360,7 +440,9 @@ module.exports = (logger) => {
           {IBM_SPEECH_WATSON_LEARNING_OPT_OUT: ibmOptions.watsonLearningOptOut}
       };
     }
-
+    stickyVars[rOpts.vendor].forEach((key) => {
+      if (!opts[key]) opts[key] = '';
+    });
     logger.debug({opts}, 'recognizer channel vars');
     return opts;
   };