initial commit

fluxer_api/src/guild/services/GuildChannelService.ts

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+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import type {ChannelID, GuildID, UserID} from '~/BrandedTypes';
+import {Permissions} from '~/Constants';
+import type {ChannelCreateRequest, ChannelResponse} from '~/channel/ChannelModel';
+import {mapChannelToResponse} from '~/channel/ChannelModel';
+import type {IChannelRepository} from '~/channel/IChannelRepository';
+import {MissingPermissionsError} from '~/Errors';
+import type {ICacheService} from '~/infrastructure/ICacheService';
+import type {IGatewayService} from '~/infrastructure/IGatewayService';
+import type {SnowflakeService} from '~/infrastructure/SnowflakeService';
+import type {UserCacheService} from '~/infrastructure/UserCacheService';
+import type {RequestCache} from '~/middleware/RequestCacheMiddleware';
+import type {GuildAuditLogService} from '../GuildAuditLogService';
+import {ChannelOperationsService} from './channel/ChannelOperationsService';
+
+export class GuildChannelService {
+	private readonly channelOps: ChannelOperationsService;
+
+	constructor(
+		private readonly channelRepository: IChannelRepository,
+		private readonly userCacheService: UserCacheService,
+		private readonly gatewayService: IGatewayService,
+		cacheService: ICacheService,
+		snowflakeService: SnowflakeService,
+		guildAuditLogService: GuildAuditLogService,
+	) {
+		this.channelOps = new ChannelOperationsService(
+			channelRepository,
+			userCacheService,
+			gatewayService,
+			cacheService,
+			snowflakeService,
+			guildAuditLogService,
+		);
+	}
+
+	async getChannels(params: {
+		userId: UserID;
+		guildId: GuildID;
+		requestCache: RequestCache;
+	}): Promise<Array<ChannelResponse>> {
+		await this.gatewayService.getGuildData({guildId: params.guildId, userId: params.userId});
+		const viewableChannelIds = await this.gatewayService.getViewableChannels({
+			guildId: params.guildId,
+			userId: params.userId,
+		});
+		const channels = await this.channelRepository.listGuildChannels(params.guildId);
+		const viewableChannels = channels.filter((channel) => viewableChannelIds.includes(channel.id));
+
+		return Promise.all(
+			viewableChannels.map((channel) => {
+				return mapChannelToResponse({
+					channel,
+					currentUserId: null,
+					userCacheService: this.userCacheService,
+					requestCache: params.requestCache,
+				});
+			}),
+		);
+	}
+
+	async createChannel(
+		params: {userId: UserID; guildId: GuildID; data: ChannelCreateRequest; requestCache: RequestCache},
+		auditLogReason?: string | null,
+	): Promise<ChannelResponse> {
+		await this.checkPermission({
+			userId: params.userId,
+			guildId: params.guildId,
+			permission: Permissions.MANAGE_CHANNELS,
+		});
+		return this.channelOps.createChannel(params, auditLogReason);
+	}
+
+	async updateChannelPositions(
+		params: {
+			userId: UserID;
+			guildId: GuildID;
+			updates: Array<{
+				channelId: ChannelID;
+				position?: number;
+				parentId: ChannelID | null | undefined;
+				lockPermissions: boolean;
+			}>;
+			requestCache: RequestCache;
+		},
+		auditLogReason?: string | null,
+	): Promise<void> {
+		await this.checkPermission({
+			userId: params.userId,
+			guildId: params.guildId,
+			permission: Permissions.MANAGE_CHANNELS,
+		});
+		await this.channelOps.updateChannelPositionsByList({
+			userId: params.userId,
+			guildId: params.guildId,
+			updates: params.updates,
+			requestCache: params.requestCache,
+			auditLogReason: auditLogReason ?? null,
+		});
+	}
+
+	async sanitizeTextChannelNames(params: {guildId: GuildID; requestCache: RequestCache}): Promise<void> {
+		await this.channelOps.sanitizeTextChannelNames(params);
+	}
+
+	private async checkPermission(params: {userId: UserID; guildId: GuildID; permission: bigint}): Promise<void> {
+		const hasPermission = await this.gatewayService.checkPermission({
+			guildId: params.guildId,
+			userId: params.userId,
+			permission: params.permission,
+		});
+		if (!hasPermission) throw new MissingPermissionsError();
+	}
+}