import random
import string
from typing import Optional

from discord import Embed, Member, Colour
from discord.ext import commands
from discord.ext.commands import BucketType, cooldown, command

from settings import colour_list, time

# Permissions to filter through
Perms = frozenset(
    {
        "create instant invite",
        "add reactions",
        "view audit log",
        "priority speaker",
        "stream",
        "read messages",
        "send messages",
        "send tts messages",
        "embed links",
        "attach links",
        "read message history",
        "external emojis",
        "view guild insights",
        "connect",
        "speak",
        "use voice activation",
        "change nickname"
    }
)


# Method to detect which permissions to filter out
def DetectPermissions(message, fset):
    # Split the message individual permissions
    message = message.split(",")

    # Filter the permission out if it's in the frozenset
    filtered = filter(lambda perm: perm not in fset, message)
    return ", ".join(filtered)


class GetInfo(commands.Cog):
    def __init__(self, bot):
        self.bot = bot

    @command(name="userinfo", aliases=["ui"])
    @cooldown(1, 5, BucketType.user)
    async def user_info(self, ctx, target: Optional[Member]):
        """Allow the users to see information about them relating to the guild"""

        # If a target has been specified, set them as the user
        if target:
            target = target
        # If no target has been specified, choose the author
        else:
            target = ctx.author

        # Get the member avatar
        userAvatar = target.avatar_url

        # Get all the roles of the user
        mentions = [role.mention for role in target.roles]

        # Store the roles in a string called "roles"
        # For each role that the user has (Skipping the first element as it's always going to be @everyone)
        # Store all the permissions that the user has in a string
        roles = " ".join(mentions[1:])

        # Returns the permissions that the user has within the guild
        filtered = filter(lambda x: x[1], target.guild_permissions)
        # Replace all "_" with " " in each item and join them together
        permission = ",".join(map(lambda x: x[0].replace("_", " "), filtered))

        # Capitalise every word in the array and filter out the permissions that are defined within the frozenset
        permissions = string.capwords("".join(map(str, DetectPermissions(permission, Perms))))

        # Set up the embed to display everything about the user
        embed = Embed(
            title=f"**User Information**",
            colour=Colour(int(random.choice(colour_list))),
            timestamp=time
        )
        embed.set_thumbnail(url=userAvatar)
        embed.set_footer(text=f"ID: {target.id}", icon_url='{}'.format(userAvatar))

        # Define fields to be added into the embed
        embed_fields = [("Name", str(target.mention), True),
                        ("Tag", target.name, True),
                        ("Discrim", "#" + target.discriminator, True),
                        ("Registered", target.created_at.strftime("%a, %b %d, %Y\n%I:%M:%S %p"), True),
                        ("Joined", target.joined_at.strftime("%a, %b %d, %Y\n%I:%M:%S %p"), True),
                        ("Top Role", target.top_role.mention, False),
                        ("Roles", roles, False),
                        ("Key Permissions", permissions, False),
                        ("Status", str(target.status).title(), True),
                        ("Boosting Server", bool(target.premium_since), True),
                        ("Bot", target.bot, True)]

        # Add fields to the embed
        for name, value, inline in embed_fields:
            embed.add_field(name=name, value=value, inline=inline)

        # Send the embed to the channel that the command was triggered in
        await ctx.send(embed=embed)

    @command(name="serverinfo", aliases=["guildinfo"])
    @cooldown(1, 5, BucketType.user)
    async def server_info(self, ctx):
        """Allow the users to see information the guild itself"""

        # Define guild icon and id
        guild_icon = ctx.guild.icon_url
        guild_id = ctx.guild.id

        # Define the statuses of the members within the discord
        statuses = [len(list(filter(lambda m: str(m.status) == "online", ctx.guild.members))),
                    len(list(filter(lambda m: str(m.status) == "idle", ctx.guild.members))),
                    len(list(filter(lambda m: str(m.status) == "dnd", ctx.guild.members))),
                    len(list(filter(lambda m: str(m.status) == "offline", ctx.guild.members)))]

        # Set up embed to display all the server information
        embed = Embed(title="**Server Information**",
                      colour=Colour(int(random.choice(colour_list))),
                      timestamp=time)
        embed.set_thumbnail(url=guild_icon)
        embed.set_footer(text=f"ID: {guild_id}", icon_url='{}'.format(guild_icon))

        # Define fields to be added into the embed
        fields = [("Owner", ctx.guild.owner, True),
                  ("Created", ctx.guild.created_at.strftime("%a, %b %d, %Y\n%I:%M:%S %p"), False),
                  ("Region", str(ctx.guild.region).upper(), False),
                  ("Statuses", f"🟢 {statuses[0]} 🟠 {statuses[1]} 🔴 {statuses[2]} ⚪ {statuses[3]}", False),
                  ("\u200b", "\u200b", False),
                  ("Members", len(ctx.guild.members), True),
                  ("Humans", len(list(filter(lambda m: not m.bot, ctx.guild.members))), True),
                  ("Bots", len(list(filter(lambda m: m.bot, ctx.guild.members))), True),
                  ("Banned Members", len(await ctx.guild.bans()), True),
                  ("Text Channels", len(ctx.guild.text_channels), True),
                  ("Voice Channels", len(ctx.guild.voice_channels), True),
                  ("Categories", len(ctx.guild.categories), True),
                  ("Roles", len(ctx.guild.roles), True),
                  ("Invites", len(await ctx.guild.invites()), True)]

        # Add fields to the embed
        for name, value, inline in fields:
            embed.add_field(name=name, value=value, inline=inline)

        # Send the embed to the channel that the command was triggered in
        await ctx.send(embed=embed)


def setup(bot):
    bot.add_cog(GetInfo(bot))