Commit

src/sessions/blueski/streaming.py

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+from __future__ import annotations
+
+import asyncio
+import logging
+from typing import TYPE_CHECKING, Any, Callable, Coroutine
+
+if TYPE_CHECKING:
+    fromapprove.sessions.blueski.session import Session as BlueskiSession
+
+logger = logging.getLogger(__name__)
+
+# Blueski (Bluesky) uses a Firehose model for streaming.
+# This typically involves connecting to a WebSocket endpoint and receiving events.
+# The atproto SDK provides tools for this.
+
+
+class BlueskiStreaming:
+    def __init__(self, session: BlueskiSession, stream_type: str, params: dict[str, Any] | None = None) -> None:
+        self.session = session
+        self.stream_type = stream_type  # e.g., 'user', 'public', 'hashtag' - will need mapping to Firehose concepts
+        self.params = params or {}
+        self._handler: Callable[[dict[str, Any]], Coroutine[Any, Any, None]] | None = None
+        self._connection_task: asyncio.Task[None] | None = None
+        self._should_stop = False
+        # self._client = None # This would be an instance of atproto.firehose.FirehoseSubscribeReposClient or similar
+
+        # TODO: Map stream_type and params to ATProto Firehose subscription needs.
+        # For example, 'user' might mean subscribing to mentions, replies, follows for the logged-in user.
+        # This would likely involve filtering the general repo firehose for relevant events,
+        # or using a more specific subscription if available for user-level events.
+
+    async def _connect(self) -> None:
+        """Internal method to connect to the Blueski Firehose."""
+        # from atproto import AsyncClient
+        # from atproto.firehose import FirehoseSubscribeReposClient, parse_subscribe_repos_message
+        # from atproto.xrpc_client.models import get_or_create, ids, models
+
+        logger.info(f"Blueski streaming: Connecting to Firehose for user {self.session.user_id}, stream type {self.stream_type}")
+        self._should_stop = False
+
+        try:
+            # TODO: Replace with actual atproto SDK usage
+            # client = self.session.util.get_client() # Get authenticated client from session utils
+            # if not client or not client.me: # Check if client is authenticated
+            #    logger.error("Blueski client not authenticated. Cannot start Firehose.")
+            #    return
+
+            # self._firehose_client = FirehoseSubscribeReposClient(params=None, base_uri=self.session.api_base_url) # Adjust base_uri if needed
+
+            # async def on_message_handler(message: models.ComAtprotoSyncSubscribeRepos.Message) -> None:
+            #     if self._should_stop:
+            #         await self._firehose_client.stop() # Ensure client stops if flag is set
+            #         return
+
+            #     # This is a simplified example. Real implementation needs to:
+            #     # 1. Determine the type of message (commit, handle, info, migrate, tombstone)
+            #     # 2. For commits, unpack operations to find posts, likes, reposts, follows, etc.
+            #     # 3. Filter these events to be relevant to the user (e.g., mentions, replies to user, new posts from followed users)
+            #     # 4. Format the data into a structure that self._handle_event expects.
+            #     # This filtering can be complex.
+
+            #     # Example: if it's a commit and contains a new post that mentions the user
+            #     # if isinstance(message, models.ComAtprotoSyncSubscribeRepos.Commit):
+            #     #     # This part is highly complex due to CAR CIBOR decoding
+            #     #     # Operations need to be extracted from the commit block
+            #     #     # For each op, check if it's a create, and if the record is a post
+            #     #     # Then, check if the post's text or facets mention the current user.
+            #     #     # This is a placeholder for that logic.
+            #     #     logger.debug(f"Firehose commit from {message.repo} at {message.time}")
+            #     #     # Example of processing ops (pseudo-code, actual decoding is more involved):
+            #     #     # ops = message.ops
+            #     #     # for op in ops:
+            #     #     #   if op.action == 'create' and op.path.endswith('/app.bsky.feed.post/...'):
+            #     #     #       record_data = ... # decode op.cid from message.blocks
+            #     #     #       if self.session.util.is_mention_of_me(record_data):
+            #     #     #            event_data = self.session.util.format_post_event(record_data)
+            #     #     #            await self._handle_event("mention", event_data)
+
+            #     # For now, we'll just log that a message was received
+            #     logger.debug(f"Blueski Firehose message received: {message.__class__.__name__}")
+
+
+            # await self._firehose_client.start(on_message_handler)
+
+            # Placeholder loop to simulate receiving events
+            while not self._should_stop:
+                await asyncio.sleep(1)
+                # In a real implementation, this loop wouldn't exist; it'd be driven by the SDK's event handler.
+                # To simulate an event:
+                # if self._handler:
+                #    mock_event = {"type": "placeholder_event", "data": {"text": "Hello from mock stream"}}
+                #    await self._handler(mock_event) # Call the registered handler
+
+            logger.info(f"Blueski streaming: Placeholder loop for {self.session.user_id} stopped.")
+
+
+        except asyncio.CancelledError:
+            logger.info(f"Blueski streaming task for user {self.session.user_id} was cancelled.")
+        except Exception as e:
+            logger.error(f"Blueski streaming error for user {self.session.user_id}: {e}", exc_info=True)
+            # Optional: implement retry logic here or in the start_streaming method
+            if not self._should_stop:
+                await asyncio.sleep(30) # Wait before trying to reconnect (if auto-reconnect is desired)
+                if not self._should_stop: # Check again before restarting
+                     self._connection_task = asyncio.create_task(self._connect())
+
+
+        finally:
+            # if self._firehose_client:
+            #    await self._firehose_client.stop()
+            logger.info(f"Blueski streaming connection closed for user {self.session.user_id}.")
+
+
+    async def _handle_event(self, event_type: str, data: dict[str, Any]) -> None:
+        """
+        Internal method to process an event from the stream and pass it to the session's handler.
+        """
+        if self._handler:
+            try:
+                # The data should be transformed into a common format expected by session.handle_streaming_event
+                # This is where Blueski-specific event data is mapped to Approve's internal event structure.
+                # For example, an Blueski 'mention' event needs to be structured similarly to
+                # how a Mastodon 'mention' event would be.
+                await self.session.handle_streaming_event(event_type, data)
+            except Exception as e:
+                logger.error(f"Error handling Blueski streaming event type {event_type}: {e}", exc_info=True)
+        else:
+            logger.warning(f"Blueski streaming: No handler registered for session {self.session.user_id}, event: {event_type}")
+
+
+    def start_streaming(self, handler: Callable[[dict[str, Any]], Coroutine[Any, Any, None]]) -> None:
+        """Starts the streaming connection."""
+        if self._connection_task and not self._connection_task.done():
+            logger.warning(f"Blueski streaming already active for user {self.session.user_id}.")
+            return
+
+        self._handler = handler # This handler is what session.py's handle_streaming_event calls
+        self._should_stop = False
+        logger.info(f"Blueski streaming: Starting for user {self.session.user_id}, type: {self.stream_type}")
+        self._connection_task = asyncio.create_task(self._connect())
+
+
+    async def stop_streaming(self) -> None:
+        """Stops the streaming connection."""
+        logger.info(f"Blueski streaming: Stopping for user {self.session.user_id}")
+        self._should_stop = True
+        # if self._firehose_client: # Assuming the SDK has a stop method
+        #     await self._firehose_client.stop()
+
+        if self._connection_task:
+            if not self._connection_task.done():
+                self._connection_task.cancel()
+            try:
+                await self._connection_task
+            except asyncio.CancelledError:
+                logger.info(f"Blueski streaming task successfully cancelled for {self.session.user_id}.")
+            self._connection_task = None
+        self._handler = None
+        logger.info(f"Blueski streaming stopped for user {self.session.user_id}.")
+
+    def is_alive(self) -> bool:
+        """Checks if the streaming connection is currently active."""
+        # return self._connection_task is not None and not self._connection_task.done() and self._firehose_client and self._firehose_client.is_connected
+        return self._connection_task is not None and not self._connection_task.done() # Simplified check
+
+    def get_stream_type(self) -> str:
+        return self.stream_type
+
+    def get_params(self) -> dict[str, Any]:
+        return self.params
+
+    # TODO: Add methods specific to Blueski streaming if necessary,
+    # e.g., methods to modify subscription details on the fly if the API supports it.
+    # For Bluesky Firehose, this might not be applicable as you usually connect and filter client-side.
+    # However, if there were different Firehose endpoints (e.g., one for public posts, one for user-specific events),
+    # this class might manage multiple connections or re-establish with new parameters.
+
+    # Example of how events might be processed (highly simplified):
+    # This would be called by the on_message_handler in _connect
+    # async def _process_firehose_message(self, message: models.ComAtprotoSyncSubscribeRepos.Message):
+    #     if isinstance(message, models.ComAtprotoSyncSubscribeRepos.Commit):
+    #         # Decode CAR file in message.blocks to get ops
+    #         # For each op (create, update, delete of a record):
+    #         #   record = get_record_from_blocks(message.blocks, op.cid)
+    #         #   if op.path.startswith("app.bsky.feed.post"): # It's a post
+    #         #       # Check if it's a new post, a reply, a quote, etc.
+    #         #       # Check for mentions of the current user
+    #         #       # Example:
+    #         #       if self.session.util.is_mention_of_me(record):
+    #         #            formatted_event = self.session.util.format_post_as_notification(record, "mention")
+    #         #            await self._handle_event("mention", formatted_event)
+    #         #   elif op.path.startswith("app.bsky.graph.follow"):
+    #         #       # Check if it's a follow of the current user
+    #         #       if record.subject == self.session.util.get_my_did(): # Assuming get_my_did() exists
+    #         #            formatted_event = self.session.util.format_follow_as_notification(record)
+    #         #            await self._handle_event("follow", formatted_event)
+    #         #   # Handle likes (app.bsky.feed.like), reposts (app.bsky.feed.repost), etc.
+    #         pass
+    #     elif isinstance(message, models.ComAtprotoSyncSubscribeRepos.Handle):
+    #         # Handle DID to handle mapping updates if necessary
+    #         logger.debug(f"Handle update: {message.handle} now points to {message.did} at {message.time}")
+    #     elif isinstance(message, models.ComAtprotoSyncSubscribeRepos.Migrate):
+    #         logger.info(f"Repo migration: {message.did} migrating from {message.migrateTo} at {message.time}")
+    #     elif isinstance(message, models.ComAtprotoSyncSubscribeRepos.Tombstone):
+    #         logger.info(f"Repo tombstone: {message.did} at {message.time}")
+    #     elif isinstance(message, models.ComAtprotoSyncSubscribeRepos.Info):
+    #         logger.info(f"Firehose info: {message.name} - {message.message}")
+    #     else:
+    #         logger.debug(f"Unknown Firehose message type: {message.__class__.__name__}")