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-rw-r--r--util/src/entities/Channel.ts179
1 files changed, 167 insertions, 12 deletions
diff --git a/util/src/entities/Channel.ts b/util/src/entities/Channel.ts
index fc954f63..ece82bd0 100644
--- a/util/src/entities/Channel.ts
+++ b/util/src/entities/Channel.ts
@@ -1,12 +1,17 @@
-import { Column, Entity, JoinColumn, JoinTable, ManyToMany, ManyToOne, OneToMany, RelationId } from "typeorm";
+import { Column, Entity, JoinColumn, ManyToOne, OneToMany, RelationId } from "typeorm";
 import { BaseClass } from "./BaseClass";
 import { Guild } from "./Guild";
-import { Message } from "./Message";
-import { User } from "./User";
+import { PublicUserProjection, User } from "./User";
 import { HTTPError } from "lambert-server";
-import { emitEvent, getPermission, Snowflake } from "../util";
-import { ChannelCreateEvent } from "../interfaces";
+import { containsAll, emitEvent, getPermission, Snowflake, trimSpecial } from "../util";
+import { ChannelCreateEvent, ChannelRecipientRemoveEvent } from "../interfaces";
 import { Recipient } from "./Recipient";
+import { Message } from "./Message";
+import { ReadState } from "./ReadState";
+import { Invite } from "./Invite";
+import { VoiceState } from "./VoiceState";
+import { Webhook } from "./Webhook";
+import { DmChannelDTO } from "../dtos";
 
 export enum ChannelType {
 	GUILD_TEXT = 0, // a text channel within a server
@@ -31,26 +36,29 @@ export class Channel extends BaseClass {
 	@Column({ nullable: true })
 	name?: string;
 
+	@Column({ type: "text", nullable: true })
+	icon?: string | null;
+
 	@Column({ type: "simple-enum", enum: ChannelType })
 	type: ChannelType;
 
-	@OneToMany(() => Recipient, (recipient: Recipient) => recipient.channel, { cascade: true })
+	@OneToMany(() => Recipient, (recipient: Recipient) => recipient.channel, {
+		cascade: true,
+		orphanedRowAction: "delete",
+	})
 	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)
+	@ManyToOne(() => Guild, {
+		onDelete: "CASCADE",
+	})
 	guild: Guild;
 
 	@Column({ nullable: true })
@@ -100,6 +108,36 @@ export class Channel extends BaseClass {
 	@Column({ nullable: true })
 	topic?: string;
 
+	@OneToMany(() => Invite, (invite: Invite) => invite.channel, {
+		cascade: true,
+		orphanedRowAction: "delete",
+	})
+	invites?: Invite[];
+
+	@OneToMany(() => Message, (message: Message) => message.channel, {
+		cascade: true,
+		orphanedRowAction: "delete",
+	})
+	messages?: Message[];
+
+	@OneToMany(() => VoiceState, (voice_state: VoiceState) => voice_state.channel, {
+		cascade: true,
+		orphanedRowAction: "delete",
+	})
+	voice_states?: VoiceState[];
+
+	@OneToMany(() => ReadState, (read_state: ReadState) => read_state.channel, {
+		cascade: true,
+		orphanedRowAction: "delete",
+	})
+	read_states?: ReadState[];
+
+	@OneToMany(() => Webhook, (webhook: Webhook) => webhook.channel, {
+		cascade: true,
+		orphanedRowAction: "delete",
+	})
+	webhooks?: Webhook[];
+
 	// TODO: DM channel
 	static async createChannel(
 		channel: Partial<Channel>,
@@ -162,6 +200,123 @@ export class Channel extends BaseClass {
 
 		return channel;
 	}
+
+	static async createDMChannel(recipients: string[], creator_user_id: string, name?: string) {
+		recipients = recipients.unique().filter((x) => x !== creator_user_id);
+		const otherRecipientsUsers = await User.find({ where: recipients.map((x) => ({ id: x })) });
+
+		// TODO: check config for max number of recipients
+		if (otherRecipientsUsers.length !== recipients.length) {
+			throw new HTTPError("Recipient/s not found");
+		}
+
+		const type = recipients.length === 1 ? ChannelType.DM : ChannelType.GROUP_DM;
+
+		let channel = null;
+
+		const channelRecipients = [...recipients, creator_user_id];
+
+		const userRecipients = await Recipient.find({
+			where: { user_id: creator_user_id },
+			relations: ["channel", "channel.recipients"],
+		});
+
+		for (let ur of userRecipients) {
+			let re = ur.channel.recipients!.map((r) => r.user_id);
+			if (re.length === channelRecipients.length) {
+				if (containsAll(re, channelRecipients)) {
+					if (channel == null) {
+						channel = ur.channel;
+						await ur.assign({ closed: false }).save();
+					}
+				}
+			}
+		}
+
+		if (channel == null) {
+			name = trimSpecial(name);
+
+			channel = await new Channel({
+				name,
+				type,
+				owner_id: type === ChannelType.DM ? undefined : creator_user_id,
+				created_at: new Date(),
+				last_message_id: null,
+				recipients: channelRecipients.map(
+					(x) =>
+						new Recipient({ user_id: x, closed: !(type === ChannelType.GROUP_DM || x === creator_user_id) })
+				),
+			}).save();
+		}
+
+		const channel_dto = await DmChannelDTO.from(channel);
+
+		if (type === ChannelType.GROUP_DM) {
+			for (let recipient of channel.recipients!) {
+				await emitEvent({
+					event: "CHANNEL_CREATE",
+					data: channel_dto.excludedRecipients([recipient.user_id]),
+					user_id: recipient.user_id,
+				});
+			}
+		} else {
+			await emitEvent({ event: "CHANNEL_CREATE", data: channel_dto, user_id: creator_user_id });
+		}
+
+		return channel_dto.excludedRecipients([creator_user_id]);
+	}
+
+	static async removeRecipientFromChannel(channel: Channel, user_id: string) {
+		await Recipient.delete({ channel_id: channel.id, user_id: user_id });
+		channel.recipients = channel.recipients?.filter((r) => r.user_id !== user_id);
+
+		if (channel.recipients?.length === 0) {
+			await Channel.deleteChannel(channel);
+			await emitEvent({
+				event: "CHANNEL_DELETE",
+				data: await DmChannelDTO.from(channel, [user_id]),
+				user_id: user_id,
+			});
+			return;
+		}
+
+		await emitEvent({
+			event: "CHANNEL_DELETE",
+			data: await DmChannelDTO.from(channel, [user_id]),
+			user_id: user_id,
+		});
+
+		//If the owner leave we make the first recipient in the list the new owner
+		if (channel.owner_id === user_id) {
+			channel.owner_id = channel.recipients!.find((r) => r.user_id !== user_id)!.user_id; //Is there a criteria to choose the new owner?
+			await emitEvent({
+				event: "CHANNEL_UPDATE",
+				data: await DmChannelDTO.from(channel, [user_id]),
+				channel_id: channel.id,
+			});
+		}
+
+		await channel.save();
+
+		await emitEvent({
+			event: "CHANNEL_RECIPIENT_REMOVE",
+			data: {
+				channel_id: channel.id,
+				user: await User.findOneOrFail({ where: { id: user_id }, select: PublicUserProjection }),
+			},
+			channel_id: channel.id,
+		} as ChannelRecipientRemoveEvent);
+	}
+
+	static async deleteChannel(channel: Channel) {
+		await Message.delete({ channel_id: channel.id }); //TODO we should also delete the attachments from the cdn but to do that we need to move cdn.ts in util
+		//TODO before deleting the channel we should check and delete other relations
+		await Channel.delete({ id: channel.id });
+	}
+
+	isDm() {
+		return this.type === ChannelType.DM || this.type === ChannelType.GROUP_DM;
+	}
 }
 
 export interface ChannelPermissionOverwrite {