from typing import Union

from discord import Embed, Guild, Member, User
from redbot.core import commands
from redbot.core.utils.chat_formatting import bold, error, warning

from .utils import get_bool_emoji, get_pagesize_str
from ..utilities.config import config

async def _core(ctx: commands.Context) -> Embed:
    """Generates the core embed for configuration menus to use."""
    e = Embed(
        title="Aurora Configuration Menu",
        description="Use the buttons below to configure Aurora.",
        color=await ctx.embed_color()
    )
    e.set_thumbnail(url=ctx.bot.user.display_avatar.url)
    return e

async def _overrides(user: Union[Member, User]) -> str:
    """Generates a configuration menu field value for a user's overrides."""

    override_settings = {
        "ephemeral": await config.user(user).history_ephemeral(),
        "inline": await config.user(user).history_inline(),
        "inline_pagesize": await config.user(user).history_inline_pagesize(),
        "pagesize": await config.user(user).history_pagesize(),
        "auto_evidenceformat": await config.user(user).auto_evidenceformat()
    }

    overrides = [
        "These settings will override the relevant guild settings.\n", # Add an extra line between the subtitle and the settings
        bold("Auto Evidence Format: ") + get_bool_emoji(override_settings['auto_evidenceformat']),
        bold("Ephemeral: ") + get_bool_emoji(override_settings['ephemeral']),
        bold("Inline: ") + get_bool_emoji(override_settings['inline']),
        bold("Inline Pagesize: ") + get_pagesize_str(override_settings['inline_pagesize']),
        bold("Pagesize: ") + get_pagesize_str(override_settings['pagesize']),
    ]
    overrides = '\n'.join(overrides)
    return overrides

async def _guild(guild: Guild) -> str:
    """Generates a configuration menu field value for a guild's settings."""

    guild_settings = {
        "show_moderator": await config.guild(guild).show_moderator(),
        "use_discord_permissions": await config.guild(guild).use_discord_permissions(),
        "ignore_modlog": await config.guild(guild).ignore_modlog(),
        "ignore_other_bots": await config.guild(guild).ignore_other_bots(),
        "dm_users": await config.guild(guild).dm_users(),
        "log_channel": await config.guild(guild).log_channel(),
        "history_ephemeral": await config.guild(guild).history_ephemeral(),
        "history_inline": await config.guild(guild).history_inline(),
        "history_pagesize": await config.guild(guild).history_pagesize(),
        "history_inline_pagesize": await config.guild(guild).history_inline_pagesize(),
        "auto_evidenceformat": await config.guild(guild).auto_evidenceformat(),
    }

    channel = guild.get_channel(guild_settings['log_channel'])
    if channel is None:
        channel = warning("Not Set")
    else:
        channel = channel.mention

    guild_str = [
        bold("Show Moderator: ") + get_bool_emoji(guild_settings['show_moderator']),
        bold("Use Discord Permissions: ") + get_bool_emoji(guild_settings['use_discord_permissions']),
        bold("Ignore Modlog: ") + get_bool_emoji(guild_settings['ignore_modlog']),
        bold("Ignore Other Bots: ") + get_bool_emoji(guild_settings['ignore_other_bots']),
        bold("DM Users: ") + get_bool_emoji(guild_settings['dm_users']),
        bold("Log Channel: ") + channel,
        bold("Auto Evidence Format: ") + get_bool_emoji(guild_settings['auto_evidenceformat']),
        bold("Ephemeral: ") + get_bool_emoji(guild_settings['history_ephemeral']),
        bold("History Inline: ") + get_bool_emoji(guild_settings['history_inline']),
        bold("History Pagesize: ") + get_pagesize_str(guild_settings['history_pagesize']),
        bold("History Inline Pagesize: ") + get_pagesize_str(guild_settings['history_inline_pagesize'])
    ]
    guild_str = '\n'.join(guild_str)
    return guild_str

async def _addrole(guild: Guild) -> str:
    """Generates a configuration menu field value for a guild's addrole whitelist."""

    whitelist = await config.guild(guild).addrole_roles()
    if blacklist:
        blacklist = [guild.get_role(role).mention or error(f"`{role}` (Not Found)") for role in whitelist]
        blacklist = '\n'.join(blacklist)
    else:
        blacklist = warning("No roles are on the addrole whitelist!")
    return blacklist

async def _immune(guild: Guild) -> str:
    """Generates a configuration menu field value for a guild's immune roles."""

    immune = await config.guild(guild).immune_roles()
    if immune:
        immune = [guild.get_role(role).mention or error(f"`{role}` (Not Found)") for role in immune]
        immune = '\n'.join(immune)
    else:
        immune = warning("No roles are set as immune roles!")
    return immune

async def embed(ctx: commands.Context) -> Embed:
    """Generates the configuration embed for a guild."""
    e = await _core(ctx)
    e.add_field(name="User Overrides", value=await _overrides(ctx.author), inline=False)
    if ctx.guild is not None and (ctx.author.guild_permissions.administrator or ctx.author.guild_permissions.manage_guild):
        e.add_field(name="Guild Settings", value=await _guild(ctx.guild), inline=False)
    return e

async def addrole_embed(ctx: commands.Context) -> Embed:
    """Generates the addrole embed for a guild."""
    e = await _core(ctx)
    e.title += ": Addrole Whitelist"
    e.description = "Use the buttons below to manage the addrole whitelist.\n\n" + await _addrole(ctx.guild)
    return e

async def immune_embed(ctx: commands.Context) -> Embed:
    """Generates the immune roles embed for a guild."""
    e = await _core(ctx)
    e.title += ": Immune Roles"
    e.description = "Use the buttons below to manage the immune roles.\n\n" + await _immune(ctx.guild)
    return e