import type {
    ChannelInGuild,
    ChannelWithMessagesInGuild,
    ChannelTypes,
    DiscordChannel,
    Snowflake,
} from "./deps.ts";
import type { CachedMessage } from "./messages.ts";
import type { CachedGuild } from "./guilds.ts";
import type { SessionCache } from "./mod.ts";
import { Collection } from "./Collection.ts";
import { ChannelFactory, DMChannel, textBasedChannels } from "./deps.ts";

export interface CachedGuildChannel extends Omit<ChannelWithMessagesInGuild, "type"> {
    type: ChannelTypes;
    messages: Collection<CachedMessage>;
    guild: CachedGuild;
    guildId: Snowflake;
}

export interface CachedGuildChannel extends Omit<ChannelInGuild, "type"> {
    type: ChannelTypes;
    guild: CachedGuild;
    guildId: Snowflake;
}

export interface CachedDMChannel extends DMChannel {
    messages: Collection<CachedMessage>;
}

export function channelBootstrapper(cache: SessionCache, channel: DiscordChannel) {
    if (!channel.guild_id) {
        cache.dms.set(channel.id, Object.assign(new DMChannel(cache.session, channel), {
            messages: new Collection<CachedMessage>(cache.session),
        }))
        return;
    }

    cache.guilds.retrieve(channel.guild_id, (guild) => {
        if (textBasedChannels.includes(channel.type)) {
            guild.channels.set(
                channel.id,
                Object.assign(
                    ChannelFactory.fromGuildChannel(cache.session, channel) as ChannelWithMessagesInGuild,
                    {
                        messages: new Collection<CachedMessage>(cache.session),
                        guildId: channel.guild_id!,
                        get guild(): CachedGuild {
                            return cache.guilds.get(this.guildId)!;
                        }
                    },
                ),
            );
        } else {
            guild.channels.set(
                channel.id,
                <CachedGuildChannel>Object.assign(
                    ChannelFactory.fromGuildChannel(cache.session, channel),
                    {
                        guildId: channel.guild_id!,
                        get guild(): CachedGuild {
                            return cache.guilds.get(this.guildId)!;
                        }
                    }
                ),
            );
        }
    });
}