refactor: separate config service

src/projectConfig/ProjectConfigService.ts

@@ -0,0 +1,43 @@
+import {
+	EMPTY_PROJECT_CONFIG,
+	getProjectConfigPath,
+	type ProjectConfig,
+} from "@/model/projectConfig";
+import { IConfigProvider, IFileSystem } from "@/ports";
+import { parseProjectConfig } from "./parseProjectConfig";
+import { serializeProjectConfig } from "./serializeProjectConfig";
+
+export class ProjectConfigService {
+	#fs: IFileSystem;
+	#config: IConfigProvider;
+
+	constructor(fs: IFileSystem, config: IConfigProvider) {
+		this.#fs = fs;
+		this.#config = config;
+	}
+
+	async load(): Promise<ProjectConfig> {
+		const folderPath = this.#config.getProjectTaskPath();
+		if (!folderPath) return { ...EMPTY_PROJECT_CONFIG };
+
+		const path = getProjectConfigPath(folderPath);
+		try {
+			const content = await this.#fs.readFile(path);
+			const parsed = parseProjectConfig(content);
+			if (parsed.isErr()) return { ...EMPTY_PROJECT_CONFIG };
+			return parsed.value;
+		} catch {
+			return { ...EMPTY_PROJECT_CONFIG };
+		}
+	}
+
+	async merge(partial: Partial<ProjectConfig>): Promise<void> {
+		const folderPath = this.#config.getProjectTaskPath();
+		if (!folderPath) return;
+
+		const current = await this.load();
+		const merged: ProjectConfig = { ...current, ...partial };
+		const content = serializeProjectConfig(merged);
+		await this.#fs.writeFile(getProjectConfigPath(folderPath), content);
+	}
+}