build: file-attachment component

src/components/file-attachment.tsx

@@ -0,0 +1,64 @@
+'use client'
+
+import React, { useState } from 'react'
+
+interface FileAttachmentProps {
+  id?: string
+  name?: string
+  required?: boolean
+  onFileSelect: (file: File | null) => void
+  acceptedTypes?: string
+  maxSizeMB?: number
+}
+
+export function FileAttachment({
+  id,
+  name,
+  required,
+  onFileSelect,
+  acceptedTypes = '',
+  maxSizeMB = 5,
+}: FileAttachmentProps) {
+  const [selectedFile, setSelectedFile] = useState<File | null>(null)
+  const [error, setError] = useState<string | null>(null)
+
+  const handleFileChange = (event: React.ChangeEvent<HTMLInputElement>) => {
+    const file = event.target.files?.[0]
+    if (file) {
+      if (file.size > maxSizeMB * 1024 * 1024) {
+        setError(`ขนาดของไฟล์ควรไม่เกิน ${maxSizeMB} MB`)
+        setSelectedFile(null)
+        onFileSelect(null)
+        return
+      }
+      setError(null)
+      setSelectedFile(file)
+      onFileSelect(file)
+    }
+  }
+
+  return (
+    <div className='relative flex w-full flex-col'>
+      <div className='flex h-40 w-full items-center justify-center rounded-md border'>
+        <div className='inline-flex items-center justify-center'>
+          <span className='text-detail text-neutral-400'>Add File(s)</span>
+        </div>
+        <input
+          id={id}
+          name={name}
+          required={required}
+          className='absolute inset-0 opacity-0'
+          accept={acceptedTypes}
+          type='file'
+          onChange={handleFileChange}
+        />
+      </div>
+      {selectedFile && (
+        <p className='my-2 hidden w-full text-sm italic text-red-600'>
+          จำเป็นต้องอัพโหลดไฟล์
+        </p>
+      )}
+      {error && <p className=''>{error}</p>}
+    </div>
+  )
+}