feat(server): add data migration system

packages/backend/server/src/data/commands/create.ts

@@ -0,0 +1,73 @@
+import { writeFileSync } from 'node:fs';
+import { join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+import { Logger } from '@nestjs/common';
+import { camelCase, snakeCase, upperFirst } from 'lodash-es';
+import {
+  Command,
+  CommandRunner,
+  InquirerService,
+  Question,
+  QuestionSet,
+} from 'nest-commander';
+
+@QuestionSet({ name: 'name-questions' })
+export class NameQuestion {
+  @Question({
+    name: 'name',
+    message: 'Name of the data migration script:',
+  })
+  parseName(val: string) {
+    return val.trim();
+  }
+}
+
+@Command({
+  name: 'create',
+  arguments: '[name]',
+  description: 'create a data migration script',
+})
+export class CreateCommand extends CommandRunner {
+  logger = new Logger(CreateCommand.name);
+  constructor(private readonly inquirer: InquirerService) {
+    super();
+  }
+
+  override async run(inputs: string[]): Promise<void> {
+    let name = inputs[0];
+
+    if (!name) {
+      name = (
+        await this.inquirer.ask<{ name: string }>('name-questions', undefined)
+      ).name;
+    }
+
+    const timestamp = Date.now();
+    const content = this.createScript(upperFirst(camelCase(name)) + timestamp);
+    const fileName = `${timestamp}-${snakeCase(name)}.ts`;
+    const filePath = join(
+      fileURLToPath(import.meta.url),
+      '../../migrations',
+      fileName
+    );
+
+    this.logger.log(`Creating ${fileName}...`);
+    writeFileSync(filePath, content);
+    this.logger.log('Done');
+  }
+
+  private createScript(name: string) {
+    const contents = ["import { PrismaService } from '../../prisma';", ''];
+    contents.push(`export class ${name} {`);
+    contents.push('  // do the migration');
+    contents.push('  static async up(db: PrismaService) {}');
+    contents.push('');
+    contents.push('  // revert the migration');
+    contents.push('  static async down(db: PrismaService) {}');
+
+    contents.push('}');
+
+    return contents.join('\n');
+  }
+}