import logging

from yuxi.channel.extensions.freshdesk.constants import (
    FRESHDESK_BLOCK_STREAMING_CHUNK_MAX_CHARS,
    FRESHDESK_BLOCK_STREAMING_CHUNK_MIN_CHARS,
)

logger = logging.getLogger(__name__)


class FreshdeskStreaming:
    streaming_mode = "block"
    block_streaming_enabled = True
    block_streaming_chunk_min_chars = FRESHDESK_BLOCK_STREAMING_CHUNK_MIN_CHARS
    block_streaming_chunk_max_chars = FRESHDESK_BLOCK_STREAMING_CHUNK_MAX_CHARS
    block_streaming_break = "\n"
    block_streaming_chunk_break_preference = "paragraph"
    block_streaming_coalesce_defaults = None

    def create_pipeline(self, outbound, target_id: str, account_id: str | None = None):
        from yuxi.channel.streaming.block import BlockReplyPipeline

        return BlockReplyPipeline(
            outbound=outbound,
            target_id=target_id,
            account_id=account_id,
            chunk_min_chars=self.block_streaming_chunk_min_chars,
            chunk_max_chars=self.block_streaming_chunk_max_chars,
            break_char=self.block_streaming_break,
            break_preference=self.block_streaming_chunk_break_preference,
        )

    def create_draft_stream_session(self, target_id: str) -> object:
        return {"target_id": target_id, "content": ""}

    def create_block_chunker(self) -> object:
        return {"mode": "length"}