Restructure omni services and add Chatwoot research snapshot

research/chatwoot/app/javascript/dashboard/composables/useFileUpload.js

@@ -0,0 +1,121 @@
+import { useMapGetter } from 'dashboard/composables/store';
+import { useAlert } from 'dashboard/composables';
+import { useI18n } from 'vue-i18n';
+import { DirectUpload } from 'activestorage';
+import { checkFileSizeLimit } from 'shared/helpers/FileHelper';
+import { getMaxUploadSizeByChannel } from '@chatwoot/utils';
+import {
+  DEFAULT_MAXIMUM_FILE_UPLOAD_SIZE,
+  resolveMaximumFileUploadSize,
+} from 'shared/helpers/FileHelper';
+import { INBOX_TYPES } from 'dashboard/helper/inbox';
+
+/**
+ * Composable for handling file uploads in conversations
+ * @param {Object} options
+ * @param {Object} options.inbox - Current inbox object (has channel_type, medium, etc.)
+ * @param {Function} options.attachFile - Callback to handle file attachment
+ * @param {boolean} options.isPrivateNote - Whether the upload is for a private note
+ */
+export const useFileUpload = ({ inbox, attachFile, isPrivateNote = false }) => {
+  const { t } = useI18n();
+
+  const accountId = useMapGetter('getCurrentAccountId');
+  const currentUser = useMapGetter('getCurrentUser');
+  const currentChat = useMapGetter('getSelectedChat');
+  const globalConfig = useMapGetter('globalConfig/get');
+
+  const installationLimit = resolveMaximumFileUploadSize(
+    globalConfig.value?.maximumFileUploadSize
+  );
+
+  // helper: compute max upload size for a given file's mime
+  const maxSizeFor = mime => {
+    // Use default/installation limit for private notes
+    if (isPrivateNote) {
+      return installationLimit;
+    }
+
+    const channelType = inbox?.channel_type;
+
+    if (!channelType || channelType === INBOX_TYPES.WEB) {
+      return installationLimit;
+    }
+
+    const channelLimit = getMaxUploadSizeByChannel({
+      channelType,
+      medium: inbox?.medium, // e.g. 'sms' | 'whatsapp' | etc.
+      mime, // e.g. 'image/png'
+    });
+
+    if (channelLimit === DEFAULT_MAXIMUM_FILE_UPLOAD_SIZE) {
+      return installationLimit;
+    }
+
+    return Math.min(channelLimit, installationLimit);
+  };
+
+  const alertOverLimit = maxSizeMB =>
+    useAlert(
+      t('CONVERSATION.FILE_SIZE_LIMIT', {
+        MAXIMUM_SUPPORTED_FILE_UPLOAD_SIZE: maxSizeMB,
+      })
+    );
+
+  const handleDirectFileUpload = file => {
+    if (!file) return;
+
+    const mime = file.file?.type || file.type;
+    const maxSizeMB = maxSizeFor(mime);
+
+    if (!checkFileSizeLimit(file, maxSizeMB)) {
+      alertOverLimit(maxSizeMB);
+      return;
+    }
+
+    const upload = new DirectUpload(
+      file.file,
+      `/api/v1/accounts/${accountId.value}/conversations/${currentChat.value.id}/direct_uploads`,
+      {
+        directUploadWillCreateBlobWithXHR: xhr => {
+          xhr.setRequestHeader(
+            'api_access_token',
+            currentUser.value.access_token
+          );
+        },
+      }
+    );
+
+    upload.create((error, blob) => {
+      if (error) {
+        useAlert(error);
+      } else {
+        attachFile({ file, blob });
+      }
+    });
+  };
+
+  const handleIndirectFileUpload = file => {
+    if (!file) return;
+
+    const mime = file.file?.type || file.type;
+    const maxSizeMB = maxSizeFor(mime);
+
+    if (!checkFileSizeLimit(file, maxSizeMB)) {
+      alertOverLimit(maxSizeMB);
+      return;
+    }
+
+    attachFile({ file });
+  };
+
+  const onFileUpload = file => {
+    if (globalConfig.value.directUploadsEnabled) {
+      handleDirectFileUpload(file);
+    } else {
+      handleIndirectFileUpload(file);
+    }
+  };
+
+  return { onFileUpload };
+};