M0-M11 狩夜人笔记初始实现：11里程碑+86测试

2026-08-24 20:35:22 +08:00
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+// ConfigStore — 应用配置 JSON 持久化（vault meta、最近库）
+import nodePath from 'node:path';
+import { promises as fs } from 'node:fs';
+import type { VaultMeta } from '@hunter/shared';
+import { RECENT_VAULT_MAX } from '@hunter/shared';
+
+export class ConfigStore {
+  private file: string;
+  private cache: { vault?: VaultMeta } | null = null;
+
+  constructor(userDataDir: string) {
+    this.file = nodePath.join(userDataDir, 'config.json');
+  }
+
+  private async read(): Promise<{ vault?: VaultMeta }> {
+    if (this.cache) return this.cache;
+    try {
+      const raw = await fs.readFile(this.file, 'utf8');
+      this.cache = JSON.parse(raw);
+    } catch {
+      this.cache = {};
+    }
+    return this.cache!;
+  }
+
+  private async write(): Promise<void> {
+    const dir = nodePath.dirname(this.file);
+    await fs.mkdir(dir, { recursive: true });
+    const tmp = this.file + '.tmp';
+    await fs.writeFile(tmp, JSON.stringify(this.cache, null, 2), 'utf8');
+    await fs.rename(tmp, this.file);
+  }
+
+  async getVaultMeta(): Promise<VaultMeta> {
+    const c = await this.read();
+    return c.vault ?? { currentRoot: '', recents: [], defaultRoot: '' };
+  }
+
+  async setCurrentRoot(root: string): Promise<VaultMeta> {
+    const meta = await this.getVaultMeta();
+    meta.currentRoot = root;
+    // 加入最近库（去重置顶，截断到上限）
+    meta.recents = [root, ...meta.recents.filter(r => r !== root)].slice(0, RECENT_VAULT_MAX);
+    (await this.read()).vault = meta;
+    await this.write();
+    return meta;
+  }
+
+  async setDefaultRoot(root: string): Promise<VaultMeta> {
+    const meta = await this.getVaultMeta();
+    meta.defaultRoot = root;
+    (await this.read()).vault = meta;
+    await this.write();
+    return meta;
+  }
+}