feat: add Dockerfiles and MySQL TypeORM wiring for center/guild backends

Fabric.Backend.Guild/src/app.module.ts

@@ -1,11 +1,13 @@
 import { Module } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
+import { buildTypeOrmConfig } from './database.config';
 import { HealthController } from './common/health.controller';
 import { GuildsModule } from './guilds/guilds.module';
 import { ChannelsModule } from './channels/channels.module';
 import { MessagingModule } from './messaging/messaging.module';
 
 @Module({
-  imports: [GuildsModule, ChannelsModule, MessagingModule],
+  imports: [TypeOrmModule.forRoot(buildTypeOrmConfig()), GuildsModule, ChannelsModule, MessagingModule],
   controllers: [HealthController],
 })
 export class AppModule {}

Fabric.Backend.Guild/src/database.config.ts

@@ -0,0 +1,16 @@
+import { TypeOrmModuleOptions } from '@nestjs/typeorm';
+import { Guild } from './entities/guild.entity';
+import { Channel } from './entities/channel.entity';
+import { Message } from './entities/message.entity';
+
+export const buildTypeOrmConfig = (): TypeOrmModuleOptions => ({
+  type: 'mysql',
+  host: process.env.DB_HOST ?? 'mysql-guild',
+  port: Number(process.env.DB_PORT ?? 3306),
+  username: process.env.DB_USER ?? 'fabric',
+  password: process.env.DB_PASSWORD ?? 'fabric',
+  database: process.env.DB_NAME ?? 'fabric_guild',
+  entities: [Guild, Channel, Message],
+  synchronize: (process.env.DB_SYNC ?? 'true') === 'true',
+  logging: (process.env.DB_LOGGING ?? 'false') === 'true',
+});

Fabric.Backend.Guild/src/entities/channel.entity.ts

@@ -0,0 +1,20 @@
+import { Column, CreateDateColumn, Entity, Index, PrimaryGeneratedColumn } from 'typeorm';
+
+@Entity('channels')
+export class Channel {
+  @PrimaryGeneratedColumn('uuid')
+  id!: string;
+
+  @Column()
+  guildId!: string;
+
+  @Column()
+  name!: string;
+
+  @Index()
+  @Column({ default: 0 })
+  lastSeq!: number;
+
+  @CreateDateColumn()
+  createdAt!: Date;
+}

Fabric.Backend.Guild/src/entities/guild.entity.ts

@@ -0,0 +1,13 @@
+import { Column, CreateDateColumn, Entity, PrimaryGeneratedColumn } from 'typeorm';
+
+@Entity('guilds')
+export class Guild {
+  @PrimaryGeneratedColumn('uuid')
+  id!: string;
+
+  @Column()
+  name!: string;
+
+  @CreateDateColumn()
+  createdAt!: Date;
+}

Fabric.Backend.Guild/src/entities/message.entity.ts

@@ -0,0 +1,21 @@
+import { Column, CreateDateColumn, Entity, Index, PrimaryGeneratedColumn } from 'typeorm';
+
+@Entity('messages')
+@Index(['channelId', 'seq'], { unique: true })
+export class Message {
+  @PrimaryGeneratedColumn('uuid')
+  id!: string;
+
+  @Index()
+  @Column()
+  channelId!: string;
+
+  @Column()
+  seq!: number;
+
+  @Column({ type: 'text' })
+  content!: string;
+
+  @CreateDateColumn()
+  createdAt!: Date;
+}