local chat history

[mxcop]

Create a system that will allow us to save chat history to the Emberry data directory.

Backend

• Construct a file path using the data directory & room key
• Write the message history to multiple file chunks *
• Write all content (e.g. images, files, etc) to a content directory within the same path
• Simple reader for history that can be called from the frontend

File Chunks *

We should store the chat messages into multiple files,
To avoid loading too much data when a chat is opened.
We can then dynamically load more history as we need it.
^{(The maximum file size of a chunk hasn't been decided yet)}

File Structure

~/AppData/Roaming/Emberry/History/<room_id>/*
  ├─ cdn/*      - # Content delivery network (where all content are stored)
  │  ├─ <image>.png
  │  └─ ...
  ├─ 0.data     - # History chunks will be named using numbers
  └─ ...