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import { Column, Entity, JoinColumn, JoinTable, ManyToMany, ManyToOne, OneToMany, RelationId } from "typeorm";
import { BaseClass } from "./BaseClass";
import { Guild } from "./Guild";
import { Message } from "./Message";
import { User } from "./User";
import { HTTPError } from "lambert-server";
import { emitEvent, getPermission, Snowflake } from "../util";
import { ChannelCreateEvent } from "../interfaces";
import { Recipient } from "./Recipient";
export enum ChannelType {
GUILD_TEXT = 0, // a text channel within a server
DM = 1, // a direct message between users
GUILD_VOICE = 2, // a voice channel within a server
GROUP_DM = 3, // a direct message between multiple users
GUILD_CATEGORY = 4, // an organizational category that contains up to 50 channels
GUILD_NEWS = 5, // a channel that users can follow and crosspost into their own server
GUILD_STORE = 6, // a channel in which game developers can sell their game on Discord
}
@Entity("channels")
export class Channel extends BaseClass {
@Column()
created_at: Date;
@Column()
name: string;
@Column({ type: "simple-enum", enum: ChannelType })
type: ChannelType;
@OneToMany(() => Recipient, (recipient: Recipient) => recipient.channel, { cascade: true })
recipients?: Recipient[];
@Column({ nullable: true })
@RelationId((channel: Channel) => channel.last_message)
last_message_id: string;
@JoinColumn({ name: "last_message_id" })
@ManyToOne(() => Message)
last_message?: Message;
@Column({ nullable: true })
@RelationId((channel: Channel) => channel.guild)
guild_id?: string;
@JoinColumn({ name: "guild_id" })
@ManyToOne(() => Guild)
guild: Guild;
@Column({ nullable: true })
@RelationId((channel: Channel) => channel.parent)
parent_id: string;
@JoinColumn({ name: "parent_id" })
@ManyToOne(() => Channel)
parent?: Channel;
@Column({ nullable: true })
@RelationId((channel: Channel) => channel.owner)
owner_id: string;
@JoinColumn({ name: "owner_id" })
@ManyToOne(() => User)
owner: User;
@Column({ nullable: true })
last_pin_timestamp?: number;
@Column({ nullable: true })
default_auto_archive_duration?: number;
@Column()
position: number;
@Column({ type: "simple-json" })
permission_overwrites: ChannelPermissionOverwrite[];
@Column({ nullable: true })
video_quality_mode?: number;
@Column({ nullable: true })
bitrate?: number;
@Column({ nullable: true })
user_limit?: number;
@Column({ nullable: true })
nsfw?: boolean;
@Column({ nullable: true })
rate_limit_per_user?: number;
@Column({ nullable: true })
topic?: string;
// TODO: DM channel
static async createChannel(
channel: Partial<Channel>,
user_id: string = "0",
opts?: {
keepId?: boolean;
skipExistsCheck?: boolean;
skipPermissionCheck?: boolean;
skipEventEmit?: boolean;
}
) {
if (!opts?.skipPermissionCheck) {
// Always check if user has permission first
const permissions = await getPermission(user_id, channel.guild_id);
permissions.hasThrow("MANAGE_CHANNELS");
}
switch (channel.type) {
case ChannelType.GUILD_TEXT:
case ChannelType.GUILD_VOICE:
if (channel.parent_id && !opts?.skipExistsCheck) {
const exists = await Channel.findOneOrFail({ id: channel.parent_id });
if (!exists) throw new HTTPError("Parent id channel doesn't exist", 400);
if (exists.guild_id !== channel.guild_id)
throw new HTTPError("The category channel needs to be in the guild");
}
break;
case ChannelType.GUILD_CATEGORY:
break;
case ChannelType.DM:
case ChannelType.GROUP_DM:
throw new HTTPError("You can't create a dm channel in a guild");
// TODO: check if guild is community server
case ChannelType.GUILD_STORE:
case ChannelType.GUILD_NEWS:
default:
throw new HTTPError("Not yet supported");
}
if (!channel.permission_overwrites) channel.permission_overwrites = [];
// TODO: auto generate position
channel = {
...channel,
...(!opts?.keepId && { id: Snowflake.generate() }),
created_at: new Date(),
position: channel.position || 0,
};
await Promise.all([
new Channel(channel).save(),
!opts?.skipEventEmit
? emitEvent({
event: "CHANNEL_CREATE",
data: channel,
guild_id: channel.guild_id,
} as ChannelCreateEvent)
: Promise.resolve(),
]);
return channel;
}
}
export interface ChannelPermissionOverwrite {
allow: bigint; // for bitfields we use bigints
deny: bigint; // for bitfields we use bigints
id: string;
type: ChannelPermissionOverwriteType;
}
export enum ChannelPermissionOverwriteType {
role = 0,
member = 1,
}
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