feat: add tag aliases support

backend/src/data/GuildTagAliases.ts

@@ -0,0 +1,66 @@
+import { getRepository, Repository } from "typeorm";
+import { BaseGuildRepository } from "./BaseGuildRepository";
+import { TagAlias } from "./entities/TagAlias";
+
+export class GuildTagAliases extends BaseGuildRepository {
+  private tagAliases: Repository<TagAlias>;
+
+  constructor(guildId) {
+    super(guildId);
+    this.tagAliases = getRepository(TagAlias);
+  }
+
+  async all(): Promise<TagAlias[]> {
+    return this.tagAliases.find({
+      where: {
+        guild_id: this.guildId,
+      },
+    });
+  }
+
+  async find(alias): Promise<TagAlias | undefined> {
+    return this.tagAliases.findOne({
+      where: {
+        guild_id: this.guildId,
+        alias,
+      },
+    });
+  }
+
+  async findAllWithTag(tag): Promise<TagAlias[] | undefined> {
+    const all = await this.all();
+    const aliases = all.filter((a) => a.tag === tag);
+    return aliases.length > 0 ? aliases : undefined;
+  }
+
+  async createOrUpdate(alias, tag, userId) {
+    const existingTagAlias = await this.find(alias);
+    if (existingTagAlias) {
+      await this.tagAliases
+        .createQueryBuilder()
+        .update()
+        .set({
+          tag,
+          user_id: userId,
+          created_at: () => "NOW()",
+        })
+        .where("guild_id = :guildId", { guildId: this.guildId })
+        .andWhere("alias = :alias", { alias })
+        .execute();
+    } else {
+      await this.tagAliases.insert({
+        guild_id: this.guildId,
+        user_id: userId,
+        alias,
+        tag,
+      });
+    }
+  }
+
+  async delete(alias) {
+    await this.tagAliases.delete({
+      guild_id: this.guildId,
+      alias,
+    });
+  }
+}

backend/src/data/entities/TagAlias.ts

@@ -0,0 +1,20 @@
+import { Column, Entity, PrimaryColumn } from "typeorm";
+
+@Entity("tag_aliases")
+export class TagAlias {
+  @Column()
+  @PrimaryColumn()
+  guild_id: string;
+
+  @Column()
+  @PrimaryColumn()
+  alias: string;
+
+  @Column()
+  @PrimaryColumn()
+  tag: string;
+
+  @Column() user_id: string;
+
+  @Column() created_at: string;
+}