Add name history plugin

src/data/GuildNameHistory.ts

@@ -0,0 +1,64 @@
+import { BaseRepository } from "./BaseRepository";
+import { getRepository, Repository } from "typeorm";
+import { NameHistoryEntry } from "./entities/NameHistoryEntry";
+
+const MAX_ENTRIES_PER_USER = 10;
+
+export class GuildNameHistory extends BaseRepository {
+  private nameHistory: Repository<NameHistoryEntry>;
+
+  constructor(guildId) {
+    super(guildId);
+    this.nameHistory = getRepository(NameHistoryEntry);
+  }
+
+  async getByUserId(userId): Promise<NameHistoryEntry[]> {
+    return this.nameHistory.find({
+      where: {
+        guild_id: this.guildId,
+        user_id: userId
+      },
+      order: {
+        id: "DESC"
+      },
+      take: MAX_ENTRIES_PER_USER
+    });
+  }
+
+  getLastEntryByType(userId, type): Promise<NameHistoryEntry> {
+    return this.nameHistory.findOne({
+      where: {
+        guild_id: this.guildId,
+        user_id: userId,
+        type
+      },
+      order: {
+        id: "DESC"
+      }
+    });
+  }
+
+  async addEntry(userId, type, value) {
+    await this.nameHistory.insert({
+      guild_id: this.guildId,
+      user_id: userId,
+      type,
+      value
+    });
+
+    // Cleanup (leave only the last MAX_ENTRIES_PER_USER entries)
+    const lastEntries = await this.getByUserId(userId);
+    if (lastEntries.length > MAX_ENTRIES_PER_USER) {
+      const earliestEntry = lastEntries[lastEntries.length - 1];
+      if (!earliestEntry) return;
+
+      this.nameHistory
+        .createQueryBuilder()
+        .where("guild_id = :guildId", { guildId: this.guildId })
+        .andWhere("user_id = :userId", { userId })
+        .andWhere("id < :id", { id: earliestEntry.id })
+        .delete()
+        .execute();
+    }
+  }
+}

src/data/NameHistoryEntryTypes.ts

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+export enum NameHistoryEntryTypes {
+  Username = 1,
+  Nickname
+}

src/data/entities/NameHistoryEntry.ts

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+import { Entity, Column, PrimaryColumn } from "typeorm";
+
+@Entity("name_history")
+export class NameHistoryEntry {
+  @Column()
+  @PrimaryColumn()
+  id: string;
+
+  @Column() guild_id: string;
+
+  @Column() user_id: string;
+
+  @Column() type: number;
+
+  @Column() value: string;
+
+  @Column() timestamp: string;
+}