From f20df10ac14b716e743b51606e92f018fd5f15e5 Mon Sep 17 00:00:00 2001
From: Collin Bolles <collinbolles@gmail.com>
Date: Tue, 4 Nov 2025 10:12:37 -0500
Subject: [PATCH 1/3] Add converter for the lexicon field

---
 .../pipes/csv/lexicon-field.pipe.ts           | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 packages/server/src/download-request/pipes/csv/lexicon-field.pipe.ts

diff --git a/packages/server/src/download-request/pipes/csv/lexicon-field.pipe.ts b/packages/server/src/download-request/pipes/csv/lexicon-field.pipe.ts
new file mode 100644
index 0000000..22e53d4
--- /dev/null
+++ b/packages/server/src/download-request/pipes/csv/lexicon-field.pipe.ts
@@ -0,0 +1,20 @@
+import { Injectable, PipeTransform } from "@nestjs/common";
+import { CsvFieldTest } from "../../../download-request/types/csv-field";
+
+@Injectable()
+export class LexiconCsvTransformer implements PipeTransform<any, Promise<string>> {
+  async transform(value: any): Promise<string> {
+    if (!value) {
+      return '';
+    }
+
+    return value.key;
+  }
+}
+
+export const lexiconCsvTest: CsvFieldTest = (uischema, _schema) => {
+  if (uischema.options?.customType === 'asl-lex') {
+    return true;
+  }
+  return false;
+}

From 72ad54e55a5c604aa2a079c1b42816aec8b80679 Mon Sep 17 00:00:00 2001
From: Collin Bolles <collinbolles@gmail.com>
Date: Tue, 4 Nov 2025 10:12:55 -0500
Subject: [PATCH 2/3] Leverage lexicon converter

---
 .../download-request/download-request.module.ts  |  4 +++-
 .../services/study-download-request.service.ts   | 16 +++++++++++++++-
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/packages/server/src/download-request/download-request.module.ts b/packages/server/src/download-request/download-request.module.ts
index 7e1fad6..46d0be7 100644
--- a/packages/server/src/download-request/download-request.module.ts
+++ b/packages/server/src/download-request/download-request.module.ts
@@ -21,6 +21,7 @@ import { DatasetDownloadRequestPipe } from './pipes/dataset-download-request.pip
 import { BasicCsvTransformer } from './pipes/csv/basic-field.pipe';
 import { VideoCsvTransformer } from './pipes/csv/video-field.pipe';
 import { UserModule } from '../user/user.module';
+import { LexiconCsvTransformer } from './pipes/csv/lexicon-field.pipe';
 
 @Module({
   imports: [
@@ -48,7 +49,8 @@ import { UserModule } from '../user/user.module';
     StudyDownloadRequestPipe,
     DatasetDownloadRequestPipe,
     BasicCsvTransformer,
-    VideoCsvTransformer
+    VideoCsvTransformer,
+    LexiconCsvTransformer
   ]
 })
 export class DownloadRequestModule {}
diff --git a/packages/server/src/download-request/services/study-download-request.service.ts b/packages/server/src/download-request/services/study-download-request.service.ts
index 2f7e87b..6de0cff 100644
--- a/packages/server/src/download-request/services/study-download-request.service.ts
+++ b/packages/server/src/download-request/services/study-download-request.service.ts
@@ -20,6 +20,7 @@ import { videoCsvTest, VideoCsvTransformer } from '../pipes/csv/video-field.pipe
 import { basicCsvTest, BasicCsvTransformer } from '../pipes/csv/basic-field.pipe';
 import { StudyService } from '../../study/study.service';
 import { UserService } from '../../user/user.service';
+import { lexiconCsvTest, LexiconCsvTransformer } from '../pipes/csv/lexicon-field.pipe';
 
 @Injectable()
 export class StudyDownloadService {
@@ -45,7 +46,8 @@ export class StudyDownloadService {
     private readonly basicCsvTransformer: BasicCsvTransformer,
     private readonly videoCsvTransformer: VideoCsvTransformer,
     private readonly studyService: StudyService,
-    private readonly userService: UserService
+    private readonly userService: UserService,
+    private readonly lexiconCsvTransformer: LexiconCsvTransformer
   ) {}
 
   async createDownloadRequest(
@@ -369,6 +371,18 @@ export class StudyDownloadService {
             }
           });
         }
+      } else if (lexiconCsvTest(uiSchema, dataSchema)) {
+        csvFields.push({
+          header: propertyName,
+          convertField: async (tag) => {
+            const tagField = tag.data?.find((field) => field.name == propertyName);
+            if (!tagField) {
+              throw new Error(`Tag field ${propertyName} not found`);
+            }
+
+            return await this.lexiconCsvTransformer.transform(tagField.data);
+          }
+        });
       } else if (basicCsvTest(uiSchema, dataSchema)) {
         csvFields.push({
           header: propertyName,

From 043e61a5b96910a40fd3727b1074cbba29aa258a Mon Sep 17 00:00:00 2001
From: Collin Bolles <collinbolles@gmail.com>
Date: Tue, 4 Nov 2025 10:13:21 -0500
Subject: [PATCH 3/3] Fix formatting

---
 .../src/download-request/pipes/csv/lexicon-field.pipe.ts    | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/server/src/download-request/pipes/csv/lexicon-field.pipe.ts b/packages/server/src/download-request/pipes/csv/lexicon-field.pipe.ts
index 22e53d4..982c68d 100644
--- a/packages/server/src/download-request/pipes/csv/lexicon-field.pipe.ts
+++ b/packages/server/src/download-request/pipes/csv/lexicon-field.pipe.ts
@@ -1,5 +1,5 @@
-import { Injectable, PipeTransform } from "@nestjs/common";
-import { CsvFieldTest } from "../../../download-request/types/csv-field";
+import { Injectable, PipeTransform } from '@nestjs/common';
+import { CsvFieldTest } from '../../../download-request/types/csv-field';
 
 @Injectable()
 export class LexiconCsvTransformer implements PipeTransform<any, Promise<string>> {
@@ -17,4 +17,4 @@ export const lexiconCsvTest: CsvFieldTest = (uischema, _schema) => {
     return true;
   }
   return false;
-}
+};