Untitled

from typing import Optional
from discord import Embed 
from discord.utils import get
from discord.ext.menus import MenuPages, ListPageSource
from discord.ext.commands import Cog
from discord.ext.commands import command


def syntax(command):
    cmd_and_aliases = "|".join([str(command), *command.aliases])
    params = []

    for key, value in command.params.items():
        if key not in ("self", "ctx"):
            params.append(f"[{key}]" if "NoneType" in str(value) else f"<{key}>")

    params = " ".join(params)

    return f"```{cmd_and_aliases} {params}```"


class HelpMenu(ListPageSource):
    def __init__(self, ctx, data):
        self.ctx = ctx

        super().__init__(data, per_page=3)

    async def write_page(self, menu, fields=[]):
        offset = (menu.current_page*self.per_page) + 1
        len_data = len(self.entries)

        embed = Embed(title="Help",
                    description="Bienvenido al menu de ayuda de Saiki Bot!",
                    colour=self.ctx.author.colour)

        embed.set_thumbnail(url=self.ctx.guild.me.avatar_url)
        embed.set_footer(text=f"{offset:,} - {min(len_data, offset*self.per_page-1):,} de {len_data:,} comandos.")

        for name, value in fields:
            embed.add_field(name=name, value=value, inline=False)


        return embed



    async def format_page(self, menu, entries):
        fields = []

        for entry in entries:
            fields.append((entry.brief or "No hay descripcion", syntax(entry)))

        return await self.write_page(menu, fields)




class Help(Cog):
    def __init__(self, client):
        self.client = client
        self.client.remove_command("help")


    async def cmd_help(self, ctx, command):
        embed = Embed(title=f"Ayuda de `{command}`",
                    description=syntax(command),
                    colour=ctx.author.colour
                    
        )                    
        
        embed.add_field(name="Descipcion del comando", value=command.help)


        await ctx.send(embed=embed)
        
    @command(name="help")
    async def show_help(self, ctx, cmd: Optional[str]):
        """"Muestra este mensaje."""
        if cmd is None:
            menu = MenuPages(source=HelpMenu(ctx, list(self.client.commands)),
                            delete_message_after=True,
                            timeout=60.0)

            await menu.start(ctx)

        else:
            if (command := get(self.client.commands, name=cmd)):
                await self.cmd_help(ctx, command)

            else:
                await ctx.send("Este comando no existe.") 

def setup(client):
    client.add_cog(Help(client))