fix file validation and check for max num of files

Author: kevinkim-ogp

packages/frontend/src/components/AttachmentSuggestions/index.tsx

@@ -95,7 +95,7 @@ function AttachmentSuggestions(props: AttachmentSuggestionsProps) {
       if (!checked) {
         onChange?.(currentValues.filter((v: string) => v !== nameToCheck))
       } else {
-        const { isValid, error } = validateFiles(variable, getValues(name))
+        const { isValid, error } = validateFiles(variable, currentValues)
         if (!isValid) {
           setError(name, { type: 'invalidFile', message: error })
         } else {

packages/frontend/src/components/AttachmentSuggestions/utils.ts

@@ -174,10 +174,10 @@ export function validateFiles(
   const totalSize = currentTotalSize + fileSize
   const currentFileCount = selectedOptions.length + 1
 
-  if (currentFileCount >= MAX_NUM_FILES) {
+  if (currentFileCount > MAX_NUM_FILES) {
     return {
       isValid: false,
-      error: 'Total number of files exceeds 10',
+      error: 'Total number of files cannot exceed 10',
     }
   }
   if (fileSize > MAX_FILE_SIZE) {