fetchDoctors function

Future<List<Document>> fetchDoctors(
  1. Databases db, {
  2. DateTime? fromDate,
  3. DateTime? tillDate,
})

Fetches a list of doctors from the Appwrite database.

This function queries the Appwrite database for documents in the specified collection that match the criteria defined by the filters. It supports optional date filters (fromDate and tillDate) to narrow the query results based on the document creation date. It retrieves documents where the type field is equal to 'doctor'.

db is the instance of the Databases used for querying the Appwrite database. fromDate is the optional start date filter for the document creation date. tillDate is the optional end date filter for the document creation date.

Returns a list of models.Document objects that match the query criteria. In case of an error, an empty list is returned.

Implementation

Future<List<models.Document>> fetchDoctors(
  Databases db, {
  DateTime? fromDate,
  DateTime? tillDate,
}) async {
  try {
    final List<String> queries = [Query.equal('type', 'doctor')];

    final bool applyDateFilter = fromDate != null || tillDate != null;

    // If date filters are applied, add queries for createdOn field
    if (applyDateFilter) {
      queries.add(Query.isNotNull('createdOn'));

      if (fromDate != null) {
        queries.add(
          Query.greaterThanEqual('createdOn', fromDate.toIso8601String()),
        );
      }

      if (tillDate != null) {
        // Add a query to filter documents created on or before the end of tillDate
        final tillDateEnd = DateTime(
          tillDate.year,
          tillDate.month,
          tillDate.day,
          23,
          59,
          59,
        );
        queries.add(
          Query.lessThanEqual('createdOn', tillDateEnd.toIso8601String()),
        );
      }
    }

    // Fetch doctor documents from Appwrite database
    final result = await db.listDocuments(
      databaseId: '67ece4a7002a0a732dfd',
      collectionId: '67f36a7e002c46ea05f0',
      queries: queries,
    );

    // Return the list of doctor documents
    return result.documents;
  } catch (e) {
    // Print error and return empty list on failure
    print('Error fetching doctors: $e');
    return [];
  }
}