import re
from endcord.app import Endcord

EXT_NAME = "endcord_aemoji"
EXT_VERSION = "0.1.0"
EXT_ENDCORD_VERSION = "1.4.2"
EXT_DESCRIPTION = "View animated custom emoji as GIFs"
EXT_COMMAND_ASSIST = ("view_aemoji - View animated emoji", "view_aemoji")

EMOJI_RE = re.compile("^<:(.+):(\d+)>$")


def get_emoji_url(emoji: str) -> str | None:
    m = EMOJI_RE.fullmatch(emoji)
    if m is None:
        return None
    emoji_id = m.group(2)
    return f"https://cdn.discordapp.com/emojis/{emoji}.gif"


class Extension:
    def __init__(self, app):
        self.app: Endcord = app

    def on_execute_command(self, command_text: str, chat_sel: int, tree_sel: int):
        if command_text.startswith("view_aemoji"):
            try:
                emoji = command_text.split(" ")[1]
            except IndexError:
                self.app.update_extra_line("Emoji argument not given")
                return
            emoji_url = get_emoji_url(emoji)
            if emoji_url is None:
                self.app.update_extra_line("Invalid emoji")
                return
            self.app.download_file(emoji_url, open_media=True)