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import { FormContext, FormContextValue, FieldConfig, FileReference, FormMeta } from './FormContext';
import { FieldRenderer } from './FieldRenderer';
import type { Field } from '@quiqr/types';
import Box from '@mui/material/Box';
/**
* Get a value from a nested object using dot notation with array support.
* Supports paths like: "foo.bar", "foo[0].bar", "foo.0.bar"
*/
function getAtPath<T = unknown>(obj: unknown, path: string): T | undefined {
if (!path || path === '') return obj as T;
const segments = path
.replace(/\[(\d+)\]/g, '.$1') // Convert [0] to .0
.split('.')
.filter(Boolean);
let current: unknown = obj;
for (const segment of segments) {
if (current === null || current === undefined) return undefined;
Iif (typeof current !== 'object') return undefined;
current = (current as Record<string, unknown>)[segment];
}
return current as T;
}
/**
* Set a value in a nested object using dot notation with array support.
* Creates intermediate objects/arrays as needed.
* Returns a new object (immutable).
*/
function setAtPath<T extends Record<string, unknown>>(
obj: T,
path: string,
value: unknown
): T {
if (!path || path === '') return value as T;
const segments = path
.replace(/\[(\d+)\]/g, '.$1')
.split('.')
.filter(Boolean);
const result = Array.isArray(obj) ? [...obj] : { ...obj };
let current: Record<string, unknown> = result as Record<string, unknown>;
for (let i = 0; i < segments.length - 1; i++) {
const segment = segments[i];
const nextSegment = segments[i + 1];
const isNextArrayIndex = /^\d+$/.test(nextSegment);
if (current[segment] === undefined || current[segment] === null) {
current[segment] = isNextArrayIndex ? [] : {};
} else if (Array.isArray(current[segment])) {
current[segment] = [...(current[segment] as unknown[])];
E} else if (typeof current[segment] === 'object') {
current[segment] = { ...(current[segment] as Record<string, unknown>) };
}
current = current[segment] as Record<string, unknown>;
}
const lastSegment = segments[segments.length - 1];
current[lastSegment] = value;
return result as T;
}
/**
* Delete a value from a nested object.
* Returns a new object (immutable).
*/
function deleteAtPath<T extends Record<string, unknown>>(
obj: T,
path: string
): T {
if (!path || path === '') return {} as T;
const segments = path
.replace(/\[(\d+)\]/g, '.$1')
.split('.')
.filter(Boolean);
const result = Array.isArray(obj) ? [...obj] : { ...obj };
let current: Record<string, unknown> = result as Record<string, unknown>;
for (let i = 0; i < segments.length - 1; i++) {
const segment = segments[i];
if (current[segment] === undefined) return obj; // Path doesn't exist
if (Array.isArray(current[segment])) {
current[segment] = [...(current[segment] as unknown[])];
E} else if (typeof current[segment] === 'object') {
current[segment] = { ...(current[segment] as Record<string, unknown>) };
}
current = current[segment] as Record<string, unknown>;
}
const lastSegment = segments[segments.length - 1];
delete current[lastSegment];
return result as T;
}
/**
* Generate compositeKey for a field based on its position in the tree.
*/
function generateCompositeKey(field: Field, parentPath: string): string {
const basePath = parentPath || 'root';
return `${basePath}.${field.key}`;
}
function processFields(
fields: Field[],
parentPath: string,
configMap: Map<string, FieldConfig>
): FieldConfig[] {
return fields.map((field) => {
const compositeKey = generateCompositeKey(field, parentPath);
const config: FieldConfig = { ...field, compositeKey };
configMap.set(compositeKey, config);
if ('fields' in field && Array.isArray(field.fields)) {
const nestedFields = field.fields as Field[];
// For section/nest with groupdata: false, children use same parent path
const childPath =
(field.type === 'section' || field.type === 'nest') &&
(field as { groupdata?: boolean }).groupdata === false
? parentPath
: compositeKey;
processFields(nestedFields, childPath, configMap);
}
return config;
});
}
function getStatePath(
_field: FieldConfig,
parentPath: string,
fieldKey: string
): string {
if (!parentPath || parentPath === 'root') {
return fieldKey;
}
const cleanParent = parentPath.replace(/^root\./, '');
return `${cleanParent}.${fieldKey}`;
}
interface DebouncedUpdate {
timeoutId: ReturnType<typeof setTimeout> | null;
pendingValue: unknown;
}
interface FormProviderProps {
children: ReactNode;
fields: Field[];
initialValues: Record<string, unknown>;
initialResources?: Record<string, FileReference[]>;
meta: FormMeta;
onSave: (document: Record<string, unknown>, resources: Record<string, FileReference[]>) => Promise<void>;
onChange?: (document: Record<string, unknown>, isDirty: boolean, resources?: Record<string, FileReference[]>) => void;
}
export function FormProvider({
children,
fields,
initialValues,
initialResources = {},
meta,
onSave,
onChange,
}: FormProviderProps) {
const { fieldConfigs } = useMemo(() => {
const configMap = new Map<string, FieldConfig>();
const processed = processFields(fields, 'root', configMap);
return { fieldConfigs: configMap, processedFields: processed };
}, [fields]);
const [document, setDocument] = useState<Record<string, unknown>>(initialValues);
const [resources, setResourcesState] = useState<Record<string, FileReference[]>>(initialResources);
const [isDirty, setIsDirty] = useState(false);
const [isSubmitting, setIsSubmitting] = useState(false);
const cacheRef = useRef<Record<string, Record<string, unknown>>>({});
const debounceRef = useRef<Record<string, DebouncedUpdate>>({});
const originalValuesRef = useRef(initialValues);
const getValueAtPath = useCallback(
<T,>(path: string): T | undefined => getAtPath<T>(document, path),
[document]
);
const setValueAtPath = useCallback(
(path: string, value: unknown, debounce = 0) => {
const applyUpdate = () => {
setDocument((prev) => {
const next = setAtPath(prev, path, value);
const dirty = JSON.stringify(next) !== JSON.stringify(originalValuesRef.current);
setIsDirty(dirty);
onChange?.(next, dirty);
return next;
});
};
if (debounce > 0) {
const existing = debounceRef.current[path];
if (existing?.timeoutId) {
clearTimeout(existing.timeoutId);
}
debounceRef.current[path] = {
timeoutId: setTimeout(applyUpdate, debounce),
pendingValue: value,
};
} else {
applyUpdate();
}
},
[onChange]
);
const clearValueAtPath = useCallback((path: string) => {
setDocument((prev) => {
const next = deleteAtPath(prev, path);
const dirty = JSON.stringify(next) !== JSON.stringify(originalValuesRef.current);
setIsDirty(dirty);
onChange?.(next, dirty);
return next;
});
}, [onChange]);
const getResources = useCallback(
(key: string): FileReference[] => resources[key] || [],
[resources]
);
const setResourcesHandler = useCallback(
(key: string, files: FileReference[], markDirty = true) => {
setResourcesState((prev) => {
const newResources = { ...prev, [key]: files };
if (markDirty) {
setIsDirty(true);
// Notify parent that form has changed (for save button state)
// Include resources so they can be tracked for saving
onChange?.(document, true, newResources);
}
return newResources;
});
},
[document, onChange]
);
const getFieldConfig = useCallback(
(compositeKey: string): FieldConfig | undefined => fieldConfigs.get(compositeKey),
[fieldConfigs]
);
const getCache = useCallback((compositeKey: string): Record<string, unknown> => {
Eif (!cacheRef.current[compositeKey]) {
cacheRef.current[compositeKey] = {};
}
return cacheRef.current[compositeKey];
}, []);
const renderFields = useCallback(
(parentPath: string, fieldsToRender: Field[]): ReactNode => {
// Process fields to get their compositeKeys
const basePath = parentPath || 'root';
return fieldsToRender.map((field) => {
const compositeKey = `${basePath}.${field.key}`;
// Ensure field config exists in the map (for dynamically rendered fields)
if (!fieldConfigs.has(compositeKey)) {
const config: FieldConfig = { ...field, compositeKey };
fieldConfigs.set(compositeKey, config);
}
return <FieldRenderer key={compositeKey} compositeKey={compositeKey} />;
});
},
[fieldConfigs]
);
const saveForm = useCallback(async () => {
// Flush pending debounced updates before save
Object.entries(debounceRef.current).forEach(([path, { timeoutId, pendingValue }]) => {
if (timeoutId) {
clearTimeout(timeoutId);
setDocument((prev) => setAtPath(prev, path, pendingValue));
}
});
debounceRef.current = {};
setIsSubmitting(true);
try {
await onSave(document, resources);
setIsDirty(false);
originalValuesRef.current = document;
} finally {
setIsSubmitting(false);
}
}, [document, resources, onSave]);
const contextValue: FormContextValue = useMemo(
() => ({
document,
getValueAtPath,
setValueAtPath,
clearValueAtPath,
resources,
getResources,
setResources: setResourcesHandler,
fieldConfigs,
getFieldConfig,
isDirty,
isSubmitting,
meta,
getCache,
renderFields,
saveForm,
}),
[
document,
getValueAtPath,
setValueAtPath,
clearValueAtPath,
resources,
getResources,
setResourcesHandler,
fieldConfigs,
getFieldConfig,
isDirty,
isSubmitting,
meta,
getCache,
renderFields,
saveForm,
]
);
return (
<FormContext.Provider value={contextValue}>
<Box sx={{display: 'flex', flexDirection: 'column', gap: '1rem', padding: '3rem 2rem'}}>
{children}
</Box>
</FormContext.Provider>
);
}
export { getAtPath, setAtPath, deleteAtPath, getStatePath };
export default FormProvider;
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