import { existsSync, mkdirSync, readFileSync, rmSync, writeFileSync } from "fs";
import { join } from "path";
import { afterEach, beforeEach, describe, expect, it } from "vitest";
import { SettingsManager } from "../src/core/settings-manager.js";
describe("SettingsManager - External Edit Preservation", () => {
const testDir = join(process.cwd(), "test-settings-bug-tmp");
const agentDir = join(testDir, "agent");
const projectDir = join(testDir, "project");
beforeEach(() => {
if (existsSync(testDir)) {
rmSync(testDir, { recursive: true });
}
mkdirSync(agentDir, { recursive: true });
mkdirSync(join(projectDir, ".prime", "agent"), { recursive: true });
});
afterEach(() => {
if (existsSync(testDir)) {
rmSync(testDir, { recursive: true });
}
});
it("should preserve file changes to packages array when changing unrelated setting", async () => {
const settingsPath = join(agentDir, "settings.json");
writeFileSync(
settingsPath,
JSON.stringify({
theme: "dark",
packages: ["npm:pi-mcp-adapter"],
}),
);
const manager = SettingsManager.create(projectDir, agentDir);
expect(manager.getPackages()).toEqual(["npm:pi-mcp-adapter"]);
const currentSettings = JSON.parse(readFileSync(settingsPath, "utf-8"));
currentSettings.packages = [];
writeFileSync(settingsPath, JSON.stringify(currentSettings, null, 2));
expect(JSON.parse(readFileSync(settingsPath, "utf-8")).packages).toEqual([]);
manager.setTheme("light");
await manager.flush();
const savedSettings = JSON.parse(readFileSync(settingsPath, "utf-8"));
expect(savedSettings.packages).toEqual([]);
expect(savedSettings.theme).toBe("light");
});
it("should preserve file changes to extensions array when changing unrelated setting", async () => {
const settingsPath = join(agentDir, "settings.json");
writeFileSync(
settingsPath,
JSON.stringify({
theme: "dark",
extensions: ["/old/extension.ts"],
}),
);
const manager = SettingsManager.create(projectDir, agentDir);
const currentSettings = JSON.parse(readFileSync(settingsPath, "utf-8"));
currentSettings.extensions = ["/new/extension.ts"];
writeFileSync(settingsPath, JSON.stringify(currentSettings, null, 2));
manager.setDefaultThinkingLevel("high");
await manager.flush();
const savedSettings = JSON.parse(readFileSync(settingsPath, "utf-8"));
expect(savedSettings.extensions).toEqual(["/new/extension.ts"]);
});
it("should preserve external project settings changes when updating unrelated project field", async () => {
const projectSettingsPath = join(projectDir, ".prime", "agent", "settings.json");
writeFileSync(
projectSettingsPath,
JSON.stringify({
extensions: ["./old-extension.ts"],
prompts: ["./old-prompt.md"],
}),
);
const manager = SettingsManager.create(projectDir, agentDir);
const currentProjectSettings = JSON.parse(readFileSync(projectSettingsPath, "utf-8"));
currentProjectSettings.prompts = ["./new-prompt.md"];
writeFileSync(projectSettingsPath, JSON.stringify(currentProjectSettings, null, 2));
manager.setProjectExtensionPaths(["./updated-extension.ts"]);
await manager.flush();
const savedProjectSettings = JSON.parse(readFileSync(projectSettingsPath, "utf-8"));
expect(savedProjectSettings.prompts).toEqual(["./new-prompt.md"]);
expect(savedProjectSettings.extensions).toEqual(["./updated-extension.ts"]);
});
it("should let in-memory project changes override external changes for the same project field", async () => {
const projectSettingsPath = join(projectDir, ".prime", "agent", "settings.json");
writeFileSync(
projectSettingsPath,
JSON.stringify({
extensions: ["./initial-extension.ts"],
}),
);
const manager = SettingsManager.create(projectDir, agentDir);
const currentProjectSettings = JSON.parse(readFileSync(projectSettingsPath, "utf-8"));
currentProjectSettings.extensions = ["./external-extension.ts"];
writeFileSync(projectSettingsPath, JSON.stringify(currentProjectSettings, null, 2));
manager.setProjectExtensionPaths(["./in-memory-extension.ts"]);
await manager.flush();
const savedProjectSettings = JSON.parse(readFileSync(projectSettingsPath, "utf-8"));
expect(savedProjectSettings.extensions).toEqual(["./in-memory-extension.ts"]);
});
});