Simplify IMAP email fetching API and refactor logic
Removed `markAsSeen` parameter from `FetchEmailsAsync` and
`FetchEmailByUidAsync` methods in `IImapEmailService` to
simplify the API. Updated `MailSearchFilter` to make `MaxCount`
nullable for greater flexibility.
Removed `markAsSeen` from `FetchEmailByUidQuery` and
`FetchEmailsQuery` records and their handlers. Deleted
`FetchEmailByUidQueryValidator` as it is no longer needed.
Refactored `LimilabsImapEmailService`:
- Introduced `FetchEmailUidsAsync` to centralize UID fetching logic.
- Simplified `FetchEmailByUidAsync` using a new helper method.
- Consolidated connection, authentication, and folder selection
into reusable private methods.
- Removed redundant code for search criteria and flag fetching.
Removed `IsSeen` from `ReceivedEmailContext` and improved
overall code readability and maintainability by reducing
duplication and centralizing logic.
Consolidate `WithAttachments` behavior into `MailSearchFilter` to simplify the API and reduce redundancy.
- Removed `withAttachments` parameter from `FetchEmailsAsync` in `IImapEmailService`.
- Added `WithAttachments` property to `MailSearchFilter` to control attachment inclusion.
- Removed `WithAttachments` property from `FetchEmailsQuery` as it is now encapsulated in `MailSearchFilter`.
- Updated `FetchEmailsQueryHandler` to use `MailSearchFilter` for attachment handling.
- Refactored `LimilabsImapEmailService` to use `MailSearchFilter.WithAttachments` for mapping email data.
These changes improve maintainability and clarity by centralizing attachment-related options in `MailSearchFilter`.
Introduced a `withAttachments` parameter to the `FetchEmailsAsync` method in `IImapEmailService` and related layers, allowing callers to include or exclude attachment data when fetching emails. Updated `FetchEmailsQuery` and `FetchEmailsQueryHandler` to propagate this parameter.
Refactored `LimilabsImapEmailService` to conditionally process attachments and inline visuals based on the `withAttachments` flag, improving performance when attachments are not required. Replaced `Flag.Unseen` with `Expression.HasFlag(Flag.Unseen)` for better criteria handling. Cleaned up attachment-processing logic for improved readability and maintainability.
Replaced the old `SearchFilter` with the new `MailSearchFilter` model to enable more flexible and granular email search criteria. Introduced `DateFilter`, `UidFilter`, and `MailSortOrder` to support advanced filtering options such as date ranges, UID ranges, and sorting order. Updated `IImapEmailService` and `FetchEmailsQuery` to use the new models.
Added validators (`DateFilterValidator`, `MailSearchFilterValidator`, `UidFilterValidator`) to ensure input correctness. Refactored `LimilabsImapEmailService` to dynamically construct IMAP search queries based on the new filter properties, supporting unseen messages, text filters, and client-side attachment filtering.
Improved maintainability and scalability by cleaning up redundant code and leveraging the new models and validation framework.
Replaced individual parameters (`folder`, `unseenOnly`, `maxCount`) in `IImapEmailService` with a consolidated `SearchFilter` object to simplify method signatures and improve maintainability.
Renamed `MailQuery` to `SearchFilter` in `FetchEmailsQuery` for better clarity. Updated `FetchEmailsQueryHandler` and `LimilabsImapEmailService` to use the new `SearchFilter` object, ensuring consistent handling of folder selection, unread message filtering, and message count limits.
Improved logging in `LimilabsImapEmailService` to reflect the updated `SearchFilter` structure.
Moved the `Folder` property from `FetchEmailsQuery` to the
`MailQuery` record to better encapsulate query parameters.
Updated `FetchEmailsQueryHandler` to use `MailQuery.Folder`
for improved modularity. Simplified UID limiting logic in
`LimilabsImapEmailService` by replacing `Take().ToList()`
with the more concise `[.. Take()]` syntax.
Refactored `FetchEmailsQuery` to encapsulate filtering and retrieval parameters (`UnseenOnly` and `MaxCount`) within a nested `MailQuery` record for better organization. Updated `FetchEmailsQueryHandler` to use the new structure.
Simplified `EmailController` endpoints:
- Replaced multiple query parameters in `FetchEmails` with a single `FetchEmailsQuery` object.
- Replaced multiple parameters in `MarkAsSeen` with a `MarkEmailAsSeenCommand` object.
- Adjusted the HTTP route for `MarkAsSeen` from `"{uid}/seen"` to `"seen"`.
Updated XML documentation to reflect these changes, improving maintainability and scalability.
Introduced IMAP functionality to enable fetching emails from an
IMAP server and marking messages as seen. Updated the
`EmailAccountDto` class with IMAP-related properties
(`ImapServer`, `ImapPort`, `ImapUseSsl`) for configuration.
Added `ReceivedEmailContext` to represent received emails and
created the `IImapEmailService` interface with methods
`FetchEmailsAsync` and `MarkAsSeenAsync`. Implemented the
`LimilabsImapEmailService` class using Limilabs Mail.dll for
IMAP operations, including connection handling, email fetching,
and marking messages as seen.
Added `FetchEmailsQuery` and `MarkEmailAsSeenCommand` with
handlers to encapsulate IMAP logic. Updated `EmailsController`
with new endpoints for fetching emails and marking messages as
seen. Registered `IImapEmailService` in `DependencyInjection`.
Included exception handling and logging for robust error
management during IMAP operations.
