Fix T56372: Properly show error messages when submission fails

This also introduces a word-wrapping function that takes variable character
widths into account.

benchmark/space/__init__.py

@@ -348,7 +348,11 @@ class BENCHMARK_PT_main(Panel):
         sub = col.row()
         sub.enabled = not G.results_submitted
         sub.scale_y = 2.25
-        sub.operator("benchmark.share", text="SHARE ONLINE")
+        if G.submission_exception:
+            text = "Retry Submission"
+        else:
+            text = "SHARE ONLINE"
+        sub.operator("benchmark.share", text=text)
 
         sub = col.row()
         subsub = sub.split()
@@ -631,10 +635,20 @@ class BENCHMARK_OT_share(bpy.types.Operator):
 
         make_buttons_default()
         print('Submitting benchmark')
+        G.submission_exception = None
         try:
             submission.submit_benchmark(G.result_dict)
+        except submission.CommunicationError as cex:
+            logger.ERROR(f'Error {cex.status_code} submitting benchmark: {cex.message}')
+            if cex.json:
+                logger.ERROR(f'Response JSON: {cex.json}')
+            else:
+                logger.ERROR(f'Response body: {cex.body}')
+            G.submission_exception = cex
+            return {'CANCELLED'}
         except Exception as ex:
-            self.report({'ERROR'}, f'Error submitting results:\n{str(ex)[:100]}')
+            logger.ERROR(f'error submitting benchmark: {ex}')
+            G.submission_exception = ex
             return {'CANCELLED'}
         print('Submission done')
         make_buttons_green()