pidgin/pidgin

GSoC History API including sqlite history adapter

2021-10-12, James Culver
741992355ead
GSoC History API including sqlite history adapter

The History API has been created to drive all message handling in purple3. It will be used to update existing messages for edits, reactions, pinning, read/deliver receipts, etc. The API uses an adapter pattern, to abstract out backends, but provides a SQLite3 backend by default.

It also provides search capabilities using a custom query language that can easily be expanded over time. It will be use by both the end user to search messages and the frontends to implement features like a pinned messages button. A command line utility is also provided for searching outside of the program itself.

## Remaining Items

**These all will most likely be done by the Pidgin core team after GSoC when we figure out exactly how to solve them.**

Need to store database in purple config directory
* Gary has spent some time looking at this and it looks like the purple-history cli will need to become a purple-ui to make this work write as in the future other adapters will be plugins.

Other things to consider:
- For simplicity, the SqliteHistoryAdapter is parsing the query itself, but for consistency having `PurpleHistoryAdapter` parse the query and pass tokens to the subclass might be something we want to do.

Testing Done:
## Unit Tests
History Manager
History Adapter

## Integration Tests
purplehistorycore created for integration tests.
PurpleSqliteHistoryAdapter functionality tested:
- Creates proper db schema
- Writes logs
- Reads logs
- Queries using query language
- Deletes using query language

Bugs closed: PIDGIN-17526, PIDGIN-17532, PIDGIN-17533, PIDGIN-17534

Reviewed at https://reviews.imfreedom.org/r/877/
/*
* finch
*
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* source distribution.
*
* This program is free software; you can redistribute it and/or modify
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* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*/
#if !defined(FINCH_GLOBAL_HEADER_INSIDE) && !defined(FINCH_COMPILATION)
# error "only <finch.h> may be included directly"
#endif
#ifndef FINCH_XFER_H
#define FINCH_XFER_H
/**
* SECTION:gntxfer
* @section_id: finch-gntxfer
* @short_description: <filename>gntxfer.h</filename>
* @title: File Transfer UI
*/
#include <purple.h>
/**************************************************************************/
/* GNT File Transfer Dialog API */
/**************************************************************************/
/**
* finch_xfer_dialog_new:
*
* Creates a new file transfer dialog.
*/
void finch_xfer_dialog_new(void);
/**
* finch_xfer_dialog_destroy:
*
* Destroys a file transfer dialog.
*/
void finch_xfer_dialog_destroy(void);
/**
* finch_xfer_dialog_show:
*
* Displays the file transfer dialog given.
* If dialog is %NULL, displays the default dialog, creating one if necessary
*/
void finch_xfer_dialog_show(void);
/**
* finch_xfer_dialog_hide:
*
* Hides the file transfer dialog.
*/
void finch_xfer_dialog_hide(void);
/**
* finch_xfer_dialog_add_xfer:
* @xfer: The file transfer.
*
* Adds a file transfer to the dialog.
*/
void finch_xfer_dialog_add_xfer(PurpleXfer *xfer);
/**
* finch_xfer_dialog_remove_xfer:
* @xfer: The file transfer.
*
* Removes a file transfer from the dialog.
*/
void finch_xfer_dialog_remove_xfer(PurpleXfer *xfer);
/**
* finch_xfer_dialog_cancel_xfer:
* @xfer: The file transfer that was cancelled.
*
* Indicate in a file transfer dialog that a transfer was cancelled.
*/
void finch_xfer_dialog_cancel_xfer(PurpleXfer *xfer);
/**
* finch_xfer_dialog_update_xfer:
* @xfer: The file transfer.
*
* Updates the information for a transfer in the dialog.
*/
void finch_xfer_dialog_update_xfer(PurpleXfer *xfer);
/**************************************************************************/
/* GNT File Transfer API */
/**************************************************************************/
/**
* finch_xfers_init:
*
* Initializes the GNT file transfer system.
*/
void finch_xfers_init(void);
/**
* finch_xfers_uninit:
*
* Uninitializes the GNT file transfer system.
*/
void finch_xfers_uninit(void);
/**
* finch_xfers_get_ui_ops:
*
* Returns the UI operations structure for the GNT file transfer UI.
*
* Returns: The GNT file transfer UI operations structure.
*/
PurpleXferUiOps *finch_xfers_get_ui_ops(void);
#endif /* FINCH_XFER_H */