# Context Repository Documentation

## Overview

The `ContextRepo` class is a repository for managing the `Context` records in the MongoDB database. It provides methods to create, read, update, and delete `Context` records. This class is also responsible for converting multimedia data to base64 strings when fetching `Context` records from the database.

## Methods

### `init_db() -> None`

- Initializes the `contexts` collection in the MongoDB database.
- If the collection does not already exist, it is created.

### `create(context: ContextModelCreate) -> ObjectId`

- Inserts a new `Context` record into the `contexts` collection.
- Parameters:
- `context: ContextModelCreate`: The context data to be inserted.
- Returns:
- `ObjectId`: The `_id` of the newly created context record.

### `find_by_id(context_id: ObjectId) -> Optional[ContextModelInDB]`

- Finds a `Context` record by its `_id` in the `contexts` collection.
- Parameters:
- `context_id: ObjectId`: The `_id` of the context record to find.
- Returns:
- `Optional[ContextModelInDB]`: The found context record or `None` if not found.
- Note: This method also fetches the associated multimedia data (audio and video), converts them to base64 strings, and adds them to the returned context object.

### `find_all() -> List[ContextModelInDB]`

- Fetches all `Context` records from the `contexts` collection.
- Returns:
- `List[ContextModelInDB]`: A list of all context records.

### `find_by_user_id(user_id: str) -> List[ContextModelInDB]`

- Finds all `Context` records associated with a specific user in the `contexts` collection.
- Parameters:
- `user_id: str`: The `user_id` associated with the context records to find.
- Returns:
- `List[ContextModelInDB]`: A list of context records associated with the specified user.

### `find_all_by_status(status: str) -> List[ContextModelInDB]`

- Finds all `Context` records with a specific status in the `contexts` collection.
- Parameters:
- `status: str`: The `status` value to filter the context records by.
- Returns:
- `List[ContextModelInDB]`: A list of context records with the specified status.

### `find_all_by_parent_id(parent_id: ObjectId) -> List[ContextModelInDB]`

- Finds all `Context` records with a specific `parent_id` in the `contexts` collection.
- Parameters:
- `parent_id: ObjectId`: The `parent_id` value to filter the context records by.
- Returns:
- `List[ContextModelInDB]`: A list of context records with the specified `parent_id`.

### `update(context_id: ObjectId, updated_data: ContextModelUpdate) -> None`

- Updates an existing `Context` record in the `contexts` collection.
- Parameters:
- `context_id: ObjectId`: The `_id` of the context record to be updated.
- `updated_data: ContextModelUpdate`: The new data to update the context record with.
- Returns:
- `None`

### `delete(context_id: ContextModelDelete) -> None`

- Deletes a `Context` record by its `_id` from the `contexts` collection.
- Parameters:
- `context_id: ContextModelDelete`: The `_id` of the context record to be deleted.
- Returns:
- `None`