import itertools

from typing import Tuple, Type, Union, Mapping, Iterable

from nonebot.adapters import Message as BaseMessage, MessageSegment as BaseMessageSegment
from nonebot.typing import overrides


class MessageSegment(BaseMessageSegment["Message"]):
    """
    飞书 协议 MessageSegment 适配。具体方法参考协议消息段类型或源码。
    """

    @classmethod
    @overrides(BaseMessageSegment)
    def get_message_class(cls) -> Type["Message"]:
        return Message

    def __str__(self) -> str:
        if self.type == "text" or self.type == "hongbao":
            return str(self.data["text"])
        return ""

    @overrides(BaseMessageSegment)
    def __add__(self, other) -> "Message":
        return Message(self) + (MessageSegment.text(other) if isinstance(
            other, str) else other)

    @overrides(BaseMessageSegment)
    def __radd__(self, other) -> "Message":
        return (MessageSegment.text(other)
                if isinstance(other, str) else Message(other)) + self

    @overrides(BaseMessageSegment)
    def is_text(self) -> bool:
        return self.type == "text"

    @staticmethod
    def text(text: str) -> "MessageSegment":
        return MessageSegment("text", {"text": text})

    @staticmethod
    def post(title: str, content: list) -> "MessageSegment":
        return MessageSegment("post", {"title": title, "content": content})

    @staticmethod
    def image(image_key: str) -> "MessageSegment":
        return MessageSegment("image", {"image_key": image_key})

    @staticmethod
    def file(file_key: str, file_name: str) -> "MessageSegment":
        return MessageSegment("file", {
            "file_key": file_key,
            "file_name": file_name
        })

    @staticmethod
    def audio(file_key: str, duration: int) -> "MessageSegment":
        return MessageSegment("audio", {
            "file_key": file_key,
            "duration": duration
        })

    @staticmethod
    def media(file_key: str, image_key: str, file_name: str,
              duration: int) -> "MessageSegment":
        return MessageSegment(
            "media", {
                "file_key": file_key,
                "image_key": image_key,
                "file_name": file_name,
                "duration": duration
            })

    @staticmethod
    def sticker(file_key) -> "MessageSegment":
        return MessageSegment("sticker", {"file_key": file_key})

    @staticmethod
    def interactive(title: str, elements: list) -> "MessageSegment":
        return MessageSegment("interactive", {
            "title": title,
            "elements": elements
        })

    @staticmethod
    def hongbao(text: str) -> "MessageSegment":
        return MessageSegment("hongbao", {"text": text})

    @staticmethod
    def share_calendar_event(summary: str, start_time: str,
                             end_time: str) -> "MessageSegment":
        return MessageSegment("share_calendar_event", {
            "summary": summary,
            "start_time": start_time,
            "end_time": end_time
        })

    @staticmethod
    def share_chat(chat_id: str) -> "MessageSegment":
        return MessageSegment("share_chat", {"chat_id": chat_id})

    @staticmethod
    def share_user(user_id: str) -> "MessageSegment":
        return MessageSegment("share_user", {"user_id": user_id})

    @staticmethod
    def system(template: str, from_user: list,
               to_chatters: list) -> "MessageSegment":
        return MessageSegment(
            "system", {
                "template": template,
                "from_user": from_user,
                "to_chatters": to_chatters
            })

    @staticmethod
    def location(name: str, longitude: str, latitude: str) -> "MessageSegment":
        return MessageSegment("location", {
            "name": name,
            "longitude": longitude,
            "latitude": latitude
        })

    @staticmethod
    def video_chat(topic: str, start_time: str) -> "MessageSegment":
        return MessageSegment("video_chat", {
            "topic": topic,
            "start_time": start_time,
        })


class Message(BaseMessage[MessageSegment]):
    """
    飞书 协议 Message 适配。
    """

    @classmethod
    @overrides(BaseMessage)
    def get_segment_class(cls) -> Type[MessageSegment]:
        return MessageSegment

    @overrides(BaseMessage)
    def __add__(self, other: Union[str, Mapping,
                                   Iterable[Mapping]]) -> "Message":
        return super(Message, self).__add__(
            MessageSegment.text(other) if isinstance(other, str) else other)

    @overrides(BaseMessage)
    def __radd__(self, other: Union[str, Mapping,
                                    Iterable[Mapping]]) -> "Message":
        return super(Message, self).__radd__(
            MessageSegment.text(other) if isinstance(other, str) else other)

    @staticmethod
    @overrides(BaseMessage)
    def _construct(
        msg: Union[str, Mapping,
                   Iterable[Mapping]]) -> Iterable[MessageSegment]:
        if isinstance(msg, Mapping):

            def _iter_message(msg: Mapping) -> Iterable[Tuple[str, dict]]:
                pure_text: str = msg.get("text", "")
                content: dict = msg.get("content", {})
                if pure_text and not content:
                    yield "text", {"text": pure_text}
                elif content and not pure_text:
                    for element in list(itertools.chain(*content)):
                        tag = element.pop("tag")
                        yield tag, element

            for type_, data in _iter_message(msg):
                yield MessageSegment(type_, data)

        elif isinstance(msg, str):
            yield MessageSegment.text(msg)
        elif isinstance(msg, Iterable):
            for seg in msg:
                yield MessageSegment(seg["type"], seg.get("data") or {})

    def _produce(self) -> dict:
        raise NotImplementedError

    @overrides(BaseMessage)
    def extract_plain_text(self) -> str:
        return "".join(seg.data["text"] for seg in self if seg.is_text())