import { describe, expect, it } from "vitest";
import { buildSessionConnectionUpdate } from "./chat-session";

describe("buildSessionConnectionUpdate", () => {
	it("does not clear reasoning settings when config omits reasoning fields", () => {
		const update = buildSessionConnectionUpdate({
			provider: "cline",
			model: "anthropic/claude-sonnet-4.6",
		});

		expect(update).toEqual({
			providerId: "cline",
			modelId: "anthropic/claude-sonnet-4.6",
		});
		expect(Object.hasOwn(update, "thinking")).toBe(false);
		expect(Object.hasOwn(update, "reasoningEffort")).toBe(false);
		expect(Object.hasOwn(update, "thinkingBudgetTokens")).toBe(false);
	});

	it("clears reasoning settings when thinking is explicitly disabled", () => {
		expect(
			buildSessionConnectionUpdate({
				provider: "cline",
				model: "anthropic/claude-sonnet-4.6",
				thinking: false,
			}),
		).toEqual({
			providerId: "cline",
			modelId: "anthropic/claude-sonnet-4.6",
			thinking: false,
			reasoningEffort: null,
			thinkingBudgetTokens: null,
		});
	});

	it("updates explicit reasoning settings without clearing omitted settings", () => {
		const update = buildSessionConnectionUpdate({
			provider: "cline",
			model: "anthropic/claude-sonnet-4.6",
			reasoningEffort: "high",
		});

		expect(update).toEqual({
			providerId: "cline",
			modelId: "anthropic/claude-sonnet-4.6",
			thinking: true,
			reasoningEffort: "high",
		});
		expect(Object.hasOwn(update, "thinkingBudgetTokens")).toBe(false);
	});
});