Improve Supabase error reporting for diagnostic purposes

src/lib/supabase.ts

@@ -33,7 +33,7 @@ export async function getAllSyncedRows(token?: string): Promise<Record<string, S
   }
 }
 
-export async function saveRowToSupabase(articleNo: string, rowData: ExcelRow, token?: string): Promise<boolean> {
+export async function saveRowToSupabase(articleNo: string, rowData: ExcelRow, token?: string): Promise<{ success: boolean; error?: string }> {
   try {
     const response = await fetch(
       `${SUPABASE_URL}/rest/v1/products`,
@@ -54,10 +54,18 @@ export async function saveRowToSupabase(articleNo: string, rowData: ExcelRow, to
       }
     );
 
-    return response.ok || response.status === 201;
-  } catch (error) {
+    if (!response.ok) {
+      const err = await response.json().catch(() => ({}));
+      return { 
+        success: false, 
+        error: `${response.status} ${response.statusText}: ${err.message || err.error_description || 'Unknown error'}` 
+      };
+    }
+    
+    return { success: true };
+  } catch (error: any) {
     console.error('Error saving to Supabase:', error);
-    return false;
+    return { success: false, error: error.message || 'Network error' };
   }
 }
 
@@ -78,7 +86,7 @@ export async function saveHistoryEntry(
   newData: ExcelRow,
   changedBy: string,
   token?: string
-): Promise<boolean> {
+): Promise<{ success: boolean; error?: string }> {
   try {
     const response = await fetch(
       `${SUPABASE_URL}/rest/v1/products_history`,
@@ -101,10 +109,18 @@ export async function saveHistoryEntry(
       }
     );
 
-    return response.ok;
-  } catch (error) {
+    if (!response.ok) {
+      const err = await response.json().catch(() => ({}));
+      return { 
+        success: false, 
+        error: `History ${response.status}: ${err.message || 'Unknown error'}` 
+      };
+    }
+    
+    return { success: true };
+  } catch (error: any) {
     console.error('Error saving history to Supabase:', error);
-    return false;
+    return { success: false, error: error.message || 'Network error' };
   }
 }