なんかもうめっちゃ変えた

packages/backend/src/core/InternalStorageService.ts

@@ -0,0 +1,45 @@
+import * as fs from 'node:fs';
+import * as Path from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { dirname } from 'node:path';
+import { Inject, Injectable } from '@nestjs/common';
+import { DI } from '@/di-symbols.js';
+import { Config } from '@/config.js';
+
+const _filename = fileURLToPath(import.meta.url);
+const _dirname = dirname(_filename);
+
+const path = Path.resolve(_dirname, '../../../../files');
+
+@Injectable()
+export class InternalStorageService {
+	constructor(
+		@Inject(DI.config)
+		private config: Config,
+	) {
+	}
+
+	public resolvePath(key: string) {
+		return Path.resolve(path, key);
+	}
+
+	public read(key: string) {
+		return fs.createReadStream(this.resolvePath(key));
+	}
+
+	public saveFromPath(key: string, srcPath: string) {
+		fs.mkdirSync(path, { recursive: true });
+		fs.copyFileSync(srcPath, this.resolvePath(key));
+		return `${this.config.url}/files/${key}`;
+	}
+
+	public saveFromBuffer(key: string, data: Buffer) {
+		fs.mkdirSync(path, { recursive: true });
+		fs.writeFileSync(this.resolvePath(key), data);
+		return `${this.config.url}/files/${key}`;
+	}
+
+	public del(key: string) {
+		fs.unlink(this.resolvePath(key), () => {});
+	}
+}