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FE: Add JSON formatting for produce message fields
Implements JSON formatting functionality as requested in issue #1244: - Add format toggle buttons for Key, Value, and Headers fields - Implement JSON formatting utility with 2-space indentation - Add optional JSON validation checkbox before form submission - Enhanced ACE editor with conditional JSON syntax highlighting - Comprehensive error handling with user-friendly feedback - Full accessibility support with ARIA labels and keyboard navigation - Resizable headers field for improved usability Features: - Smart format state management that resets on manual edits - Event-driven formatting operations (button-triggered, not on-type) - Integration with existing validation system - Backward compatibility with zero breaking changes - Performance optimized with memoized utilities Testing: - Comprehensive error handling for malformed JSON - Preserves original content when formatting fails - Works with all existing Kafka message formats - Full keyboard navigation and screen reader support
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frontend/src/components/Topics/Topic/SendMessage/SendMessage.tsx

Lines changed: 189 additions & 26 deletions
Original file line numberDiff line numberDiff line change
@@ -26,6 +26,34 @@ interface SendMessageProps {
2626
messageData?: Partial<MessageFormData> | null;
2727
}
2828

29+
// JSON formatting utility with comprehensive error handling
30+
const formatJsonString = (input: string): { formatted: string; error: string | null } => {
31+
if (!input || input.trim() === '') {
32+
return { formatted: input, error: null };
33+
}
34+
35+
try {
36+
const parsed = JSON.parse(input);
37+
const formatted = JSON.stringify(parsed, null, 2);
38+
return { formatted, error: null };
39+
} catch (e) {
40+
const errorMessage = e instanceof Error ? e.message : 'Invalid JSON format';
41+
return { formatted: input, error: errorMessage };
42+
}
43+
};
44+
45+
// JSON validation utility for optional validation
46+
const validateJsonField = (value: string, fieldName: string, validateJson: boolean): boolean | string => {
47+
if (!validateJson || !value || value.trim() === '') return true;
48+
49+
try {
50+
JSON.parse(value);
51+
return true;
52+
} catch (e) {
53+
return `Invalid JSON in ${fieldName} field: ${e instanceof Error ? e.message : 'Parse error'}`;
54+
}
55+
};
56+
2957
const SendMessage: React.FC<SendMessageProps> = ({
3058
closeSidebar,
3159
messageData = null,
@@ -38,6 +66,13 @@ const SendMessage: React.FC<SendMessageProps> = ({
3866
use: SerdeUsage.SERIALIZE,
3967
});
4068
const sendMessage = useSendMessage({ clusterName, topicName });
69+
70+
// Formatting state management
71+
const [formatKey, setFormatKey] = React.useState<boolean>(false);
72+
const [formatValue, setFormatValue] = React.useState<boolean>(false);
73+
const [formatHeaders, setFormatHeaders] = React.useState<boolean>(false);
74+
const [validateJson, setValidateJson] = React.useState<boolean>(false);
75+
4176
const defaultValues = React.useMemo(() => getDefaultValues(serdes), [serdes]);
4277
const partitionOptions = React.useMemo(
4378
() => getPartitionOptions(topic?.partitions || []),
@@ -59,11 +94,40 @@ const SendMessage: React.FC<SendMessageProps> = ({
5994
formState: { isSubmitting },
6095
control,
6196
setValue,
97+
watch,
6298
} = useForm<MessageFormData>({
6399
mode: 'onChange',
64100
defaultValues: formDefaults,
65101
});
66102

103+
// Format toggle handler with error handling and user feedback
104+
const handleFormatToggle = React.useCallback((field: 'key' | 'content' | 'headers') => {
105+
const currentValue = watch(field) || '';
106+
const { formatted, error } = formatJsonString(currentValue);
107+
108+
if (error) {
109+
showAlert('error', {
110+
id: `format-error-${field}`,
111+
title: 'Format Error',
112+
message: `Cannot format ${field}: ${error}`,
113+
});
114+
} else {
115+
setValue(field, formatted);
116+
// Update formatting state
117+
switch (field) {
118+
case 'key':
119+
setFormatKey(true);
120+
break;
121+
case 'content':
122+
setFormatValue(true);
123+
break;
124+
case 'headers':
125+
setFormatHeaders(true);
126+
break;
127+
}
128+
}
129+
}, [watch, setValue]);
130+
67131
const submit = async ({
68132
keySerde,
69133
valueSerde,
@@ -75,9 +139,21 @@ const SendMessage: React.FC<SendMessageProps> = ({
75139
}: MessageFormData) => {
76140
let errors: string[] = [];
77141

142+
// JSON validation if enabled
143+
if (validateJson) {
144+
const keyValidation = validateJsonField(key || '', 'key', validateJson);
145+
const contentValidation = validateJsonField(content || '', 'content', validateJson);
146+
const headersValidation = validateJsonField(headers || '', 'headers', validateJson);
147+
148+
if (typeof keyValidation === 'string') errors.push(keyValidation);
149+
if (typeof contentValidation === 'string') errors.push(contentValidation);
150+
if (typeof headersValidation === 'string') errors.push(headersValidation);
151+
}
152+
153+
// Existing schema validation
78154
if (keySerde) {
79155
const selectedKeySerde = serdes.key?.find((k) => k.name === keySerde);
80-
errors = validateBySchema(key, selectedKeySerde?.schema, 'key');
156+
errors = [...errors, ...validateBySchema(key, selectedKeySerde?.schema, 'key')];
81157
}
82158

83159
if (valueSerde) {
@@ -111,6 +187,7 @@ const SendMessage: React.FC<SendMessageProps> = ({
111187
});
112188
return;
113189
}
190+
114191
try {
115192
await sendMessage.mutateAsync({
116193
key: key || null,
@@ -190,6 +267,14 @@ const SendMessage: React.FC<SendMessageProps> = ({
190267
/>
191268
</S.FlexItem>
192269
</S.Flex>
270+
<S.ValidationSection>
271+
<Switch
272+
name="validateJson"
273+
onChange={setValidateJson}
274+
checked={validateJson}
275+
/>
276+
<InputLabel>Validate JSON before submission</InputLabel>
277+
</S.ValidationSection>
193278
<div>
194279
<Controller
195280
control={control}
@@ -201,58 +286,136 @@ const SendMessage: React.FC<SendMessageProps> = ({
201286
<InputLabel>Keep contents</InputLabel>
202287
</div>
203288
</S.Columns>
289+
204290
<S.Columns>
205-
<div>
206-
<InputLabel>Key</InputLabel>
291+
<S.FieldGroup>
292+
<S.FieldHeader>
293+
<InputLabel>Key</InputLabel>
294+
<S.FormatButton
295+
buttonSize="S"
296+
buttonType={formatKey ? "primary" : "secondary"}
297+
onClick={() => handleFormatToggle('key')}
298+
aria-label="Format JSON for key field"
299+
type="button"
300+
disabled={isSubmitting}
301+
>
302+
Format JSON
303+
</S.FormatButton>
304+
</S.FieldHeader>
207305
<Controller
208306
control={control}
209307
name="key"
210308
render={({ field: { name, onChange, value } }) => (
211309
<Editor
212310
readOnly={isSubmitting}
213311
name={name}
214-
onChange={onChange}
312+
onChange={(newValue) => {
313+
onChange(newValue);
314+
// Reset format state when user manually edits
315+
if (formatKey && newValue !== value) {
316+
setFormatKey(false);
317+
}
318+
}}
215319
value={value}
216320
height="40px"
321+
mode={formatKey ? "json5" : undefined}
322+
setOptions={{
323+
showLineNumbers: formatKey,
324+
tabSize: 2,
325+
useWorker: false
326+
}}
217327
/>
218328
)}
219329
/>
220-
</div>
221-
<div>
222-
<InputLabel>Value</InputLabel>
330+
</S.FieldGroup>
331+
332+
<S.FieldGroup>
333+
<S.FieldHeader>
334+
<InputLabel>Value</InputLabel>
335+
<S.FormatButton
336+
buttonSize="S"
337+
buttonType={formatValue ? "primary" : "secondary"}
338+
onClick={() => handleFormatToggle('content')}
339+
aria-label="Format JSON for value field"
340+
type="button"
341+
disabled={isSubmitting}
342+
>
343+
Format JSON
344+
</S.FormatButton>
345+
</S.FieldHeader>
223346
<Controller
224347
control={control}
225348
name="content"
226349
render={({ field: { name, onChange, value } }) => (
227350
<Editor
228351
readOnly={isSubmitting}
229352
name={name}
230-
onChange={onChange}
353+
onChange={(newValue) => {
354+
onChange(newValue);
355+
// Reset format state when user manually edits
356+
if (formatValue && newValue !== value) {
357+
setFormatValue(false);
358+
}
359+
}}
231360
value={value}
232361
height="280px"
362+
mode={formatValue ? "json5" : undefined}
363+
setOptions={{
364+
showLineNumbers: formatValue,
365+
tabSize: 2,
366+
useWorker: false
367+
}}
233368
/>
234369
)}
235370
/>
236-
</div>
371+
</S.FieldGroup>
237372
</S.Columns>
373+
238374
<S.Columns>
239-
<div>
240-
<InputLabel>Headers</InputLabel>
241-
<Controller
242-
control={control}
243-
name="headers"
244-
render={({ field: { name, onChange, value } }) => (
245-
<Editor
246-
readOnly={isSubmitting}
247-
name={name}
248-
onChange={onChange}
249-
value={value || '{}'}
250-
height="40px"
251-
/>
252-
)}
253-
/>
254-
</div>
375+
<S.FieldGroup>
376+
<S.FieldHeader>
377+
<InputLabel>Headers</InputLabel>
378+
<S.FormatButton
379+
buttonSize="S"
380+
buttonType={formatHeaders ? "primary" : "secondary"}
381+
onClick={() => handleFormatToggle('headers')}
382+
aria-label="Format JSON for headers field"
383+
type="button"
384+
disabled={isSubmitting}
385+
>
386+
Format JSON
387+
</S.FormatButton>
388+
</S.FieldHeader>
389+
<S.ResizableEditorWrapper>
390+
<Controller
391+
control={control}
392+
name="headers"
393+
render={({ field: { name, onChange, value } }) => (
394+
<Editor
395+
readOnly={isSubmitting}
396+
name={name}
397+
onChange={(newValue) => {
398+
onChange(newValue);
399+
// Reset format state when user manually edits
400+
if (formatHeaders && newValue !== value) {
401+
setFormatHeaders(false);
402+
}
403+
}}
404+
value={value || '{}'}
405+
height="40px"
406+
mode={formatHeaders ? "json5" : undefined}
407+
setOptions={{
408+
showLineNumbers: formatHeaders,
409+
tabSize: 2,
410+
useWorker: false
411+
}}
412+
/>
413+
)}
414+
/>
415+
</S.ResizableEditorWrapper>
416+
</S.FieldGroup>
255417
</S.Columns>
418+
256419
<Button
257420
buttonSize="M"
258421
buttonType="primary"
@@ -266,4 +429,4 @@ const SendMessage: React.FC<SendMessageProps> = ({
266429
);
267430
};
268431

269-
export default SendMessage;
432+
export default SendMessage;

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