from __future__ import annotations


class HelpScoutStreaming:
    streaming_mode = "block"
    preview_stream_throttle_ms = 200
    preview_min_initial_chars = 20

    block_streaming_enabled = True
    block_streaming_break = "paragraph"
    block_streaming_chunk_min_chars = 200
    block_streaming_chunk_max_chars = 1500
    block_streaming_chunk_break_preference = "paragraph"
    block_streaming_coalesce_defaults = {
        "min_chars": 100,
        "max_chars": 600,
        "idle_ms": 500,
    }

    def create_draft_stream_session(self, target_id: str) -> object:
        conversation_id = target_id.split(":")[-1] if ":" in target_id else target_id
        return {
            "target_id": target_id,
            "conversation_id": int(conversation_id),
            "mode": "block",
            "draft_base": "",
        }

    def create_block_chunker(self) -> object:
        return {
            "mode": "paragraph",
            "min_chars": 200,
            "max_chars": 1500,
            "break_preference": "paragraph",
        }