from __future__ import annotations

from typing import Any


_STICKER_CONTENT_KEY = "body"
_STICKER_INFO_KEY = "info"


def is_sticker_event(event_source: dict[str, Any]) -> bool:
    content = event_source.get("content", {})
    return content.get("msgtype") == "m.sticker"


def parse_sticker(event_source: dict[str, Any]) -> dict[str, Any] | None:
    content = event_source.get("content", {})
    info = content.get("info", {})
    mxc_url = content.get("url", "")
    return {
        "type": "sticker",
        "body": content.get(_STICKER_CONTENT_KEY, ""),
        "url": mxc_url,
        "mimetype": info.get("mimetype", ""),
        "width": info.get("w", 0),
        "height": info.get("h", 0),
        "text": f"[贴纸] {content.get(_STICKER_CONTENT_KEY, '')}" if content.get(_STICKER_CONTENT_KEY) else "[贴纸]",
    }


def build_outbound_sticker(
    sticker_url: str,
    body: str = "",
    mimetype: str = "image/png",
    width: int = 0,
    height: int = 0,
) -> dict[str, Any]:
    content: dict[str, Any] = {
        "msgtype": "m.sticker",
        "body": body or "sticker",
        "url": sticker_url,
        "info": {"mimetype": mimetype},
    }
    if width and height:
        content["info"]["w"] = width
        content["info"]["h"] = height
    return content