from __future__ import annotations

STREAMING_MODE = "block"

BLOCK_STREAMING_ENABLED = True
BLOCK_STREAMING_BREAK = "sentence"
BLOCK_STREAMING_CHUNK_MIN_CHARS = 500
BLOCK_STREAMING_CHUNK_MAX_CHARS = 7000
BLOCK_STREAMING_CHUNK_BREAK_PREFERENCE = "sentence"
PREVIEW_STREAM_THROTTLE_MS = 800
PREVIEW_MIN_INITIAL_CHARS = 200

streaming_mode = STREAMING_MODE
block_streaming_enabled = BLOCK_STREAMING_ENABLED
block_streaming_break = BLOCK_STREAMING_BREAK
block_streaming_chunk_min_chars = BLOCK_STREAMING_CHUNK_MIN_CHARS
block_streaming_chunk_max_chars = BLOCK_STREAMING_CHUNK_MAX_CHARS
block_streaming_chunk_break_preference = BLOCK_STREAMING_CHUNK_BREAK_PREFERENCE
preview_stream_throttle_ms = PREVIEW_STREAM_THROTTLE_MS
preview_min_initial_chars = PREVIEW_MIN_INITIAL_CHARS


def create_block_chunker() -> object:
    return None


def create_draft_stream_session(target_id: str, config: dict, account_id: str = "default") -> object:
    return None