fix: simplify diagnosis API aliases

Extract toImageClassificationRecord helper function to eliminate duplicated
transformation code between getImageClassifications and createImageClassification.
Replace hardcoded fake disease object with explicit error when diagnosis.disease
is null, ensuring data integrity. Remove unnecessary type casts now that the
helper is properly typed.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

apps/web/src/lib/api-client.ts

@@ -38,6 +38,36 @@ async function fetchApi<T>(endpoint: string, options?: RequestInit): Promise<T>
   return response.json();
 }
 
+function toImageClassificationRecord(diagnosis: DiagnosisRecord): ImageClassificationRecord {
+  if (!diagnosis.disease) {
+    throw new Error('Diagnosis does not include disease details');
+  }
+
+  return {
+    id: diagnosis.id,
+    predictedDiseaseSlug: diagnosis.predictedDiseaseSlug || 'daun-sehat',
+    confidence: diagnosis.confidence || 0,
+    probabilities: diagnosis.predictions.map((p) => ({
+      diseaseSlug: p.diseaseSlug || 'daun-sehat',
+      label: p.modelLabel,
+      confidence: p.confidence,
+    })),
+    imageUrl: diagnosis.imageUrl,
+    originalFileName: diagnosis.imageFileName,
+    uploaderPublicId: diagnosis.uploaderPublicId,
+    uploader: {
+      public_id: diagnosis.uploaderPublicId,
+      file_name: diagnosis.imageFileName,
+      mime_type: diagnosis.imageMimeType,
+      size_bytes: diagnosis.imageSizeBytes,
+      file_type: diagnosis.imageMimeType.split('/')[1] || 'unknown',
+      download_url: diagnosis.imageUrl,
+    },
+    createdAt: diagnosis.createdAt,
+    disease: diagnosis.disease,
+  };
+}
+
 export const apiClient = {
   // Auth methods
   async getMe(): Promise<AuthMeResponse> {
@@ -130,71 +160,11 @@ export const apiClient = {
   // Backwards-compatible aliases for old image classification methods
   async getImageClassifications(): Promise<ImageClassificationRecord[]> {
     const diagnoses = await this.getDiagnoses();
-    return diagnoses.map((d) => ({
+    return diagnoses.map(toImageClassificationRecord);
-      id: d.id,
-      predictedDiseaseSlug: d.predictedDiseaseSlug || 'daun-sehat',
-      confidence: d.confidence || 0,
-      probabilities: d.predictions.map((p) => ({
-        diseaseSlug: p.diseaseSlug || 'daun-sehat',
-        label: p.modelLabel,
-        confidence: p.confidence,
-      })),
-      imageUrl: d.imageUrl,
-      originalFileName: d.imageFileName,
-      uploaderPublicId: d.uploaderPublicId,
-      uploader: {
-        public_id: d.uploaderPublicId,
-        file_name: d.imageFileName,
-        mime_type: d.imageMimeType,
-        size_bytes: d.imageSizeBytes,
-        file_type: d.imageMimeType.split('/')[1] || 'unknown',
-        download_url: d.imageUrl,
-      },
-      createdAt: d.createdAt,
-      disease: d.disease || {
-        slug: 'daun-sehat',
-        label: 'Daun Sehat',
-        commonName: 'Healthy Leaf',
-        description: '',
-        symptoms: [],
-        treatment: [],
-        riskLevel: 'low',
-      },
-    })) as ImageClassificationRecord[];
   },
 
   async createImageClassification(file: File): Promise<ImageClassificationRecord> {
     const diagnosis = await this.createDiagnosis(file);
-    return {
+    return toImageClassificationRecord(diagnosis);
-      id: diagnosis.id,
-      predictedDiseaseSlug: diagnosis.predictedDiseaseSlug || 'daun-sehat',
-      confidence: diagnosis.confidence || 0,
-      probabilities: diagnosis.predictions.map((p) => ({
-        diseaseSlug: p.diseaseSlug || 'daun-sehat',
-        label: p.modelLabel,
-        confidence: p.confidence,
-      })),
-      imageUrl: diagnosis.imageUrl,
-      originalFileName: diagnosis.imageFileName,
-      uploaderPublicId: diagnosis.uploaderPublicId,
-      uploader: {
-        public_id: diagnosis.uploaderPublicId,
-        file_name: diagnosis.imageFileName,
-        mime_type: diagnosis.imageMimeType,
-        size_bytes: diagnosis.imageSizeBytes,
-        file_type: diagnosis.imageMimeType.split('/')[1] || 'unknown',
-        download_url: diagnosis.imageUrl,
-      },
-      createdAt: diagnosis.createdAt,
-      disease: diagnosis.disease || {
-        slug: 'daun-sehat',
-        label: 'Daun Sehat',
-        commonName: 'Healthy Leaf',
-        description: '',
-        symptoms: [],
-        treatment: [],
-        riskLevel: 'low',
-      },
-    } as ImageClassificationRecord;
   },
 };