1 files changed, 87 insertions, 0 deletions
diff --git a/slack/slack_thread.py b/slack/slack_thread.py
new file mode 100644
index 0000000..f92dfc4
--- /dev/null
+++ b/slack/slack_thread.py
@@ -0,0 +1,87 @@
+from __future__ import annotations
+
+from itertools import chain
+from typing import TYPE_CHECKING, Dict, Mapping, Tuple
+
+from slack.slack_buffer import SlackBuffer
+from slack.slack_message import SlackMessage, SlackTs
+from slack.task import gather
+
+if TYPE_CHECKING:
+    from typing_extensions import Literal
+
+    from slack.slack_workspace import SlackWorkspace
+
+
+class SlackThread(SlackBuffer):
+    def __init__(self, parent: SlackMessage) -> None:
+        super().__init__()
+        self.parent = parent
+
+    @property
+    def workspace(self) -> SlackWorkspace:
+        return self.parent.workspace
+
+    @property
+    def context(self) -> Literal["conversation", "thread"]:
+        return "thread"
+
+    @property
+    def messages(self) -> Mapping[SlackTs, SlackMessage]:
+        return self.parent.replies
+
+    async def get_name_and_buffer_props(self) -> Tuple[str, Dict[str, str]]:
+        conversation_name = await self.parent.conversation.name_with_prefix("full_name")
+        name = f"{conversation_name}.${self.parent.hash}"
+        short_name = f" ${self.parent.hash}"
+
+        return name, {
+            "short_name": short_name,
+            "title": "topic",
+            "input_multiline": "1",
+            "localvar_set_type": self.parent.conversation.buffer_type,
+            "localvar_set_slack_type": "thread",
+            "localvar_set_nick": self.workspace.my_user.nick(),
+            "localvar_set_channel": name,
+            "localvar_set_server": self.workspace.name,
+        }
+
+    async def buffer_switched_to(self):
+        await self.fill_history()
+
+    async def print_history(self):
+        if self.history_filled:
+            return
+
+        self.history_filled = True
+
+        with self.loading():
+            messages = chain([self.parent], self.parent.replies.values())
+            for message in messages:
+                await self.print_message(message, backlog=True)
+
+    async def fill_history(self):
+        if self.history_pending:
+            return
+
+        if self.parent.reply_history_filled:
+            await self.print_history()
+            return
+
+        with self.loading():
+            self.history_pending = True
+
+            messages = await self.parent.conversation.fetch_replies(self.parent)
+            if messages is None:
+                return
+
+            sender_user_ids = [m.sender_user_id for m in messages if m.sender_user_id]
+            self.workspace.users.initialize_items(sender_user_ids)
+
+            sender_bot_ids = [m.sender_bot_id for m in messages if m.sender_bot_id]
+            self.workspace.bots.initialize_items(sender_bot_ids)
+
+            await gather(*(message.render(self.context) for message in messages))
+            await self.print_history()
+
+            self.history_pending = False