import { expect, test } from "@playwright/test";

test.describe("裸 / 重定向", () => {
    test("默认 Accept-Language (en-US) 跳 /en", async ({ request }) => {
        const res = await request.get("/", {
            headers: { "accept-language": "en-US" },
            maxRedirects: 0,
        });
        expect(res.status()).toBeGreaterThanOrEqual(300);
        expect(res.status()).toBeLessThan(400);
        expect(res.headers()["location"]).toContain("/en");
    });

    test("Accept-Language zh-CN 跳 /zh-CN", async ({ request }) => {
        const res = await request.get("/", {
            headers: { "accept-language": "zh-CN,zh;q=0.9" },
            maxRedirects: 0,
        });
        expect(res.status()).toBeGreaterThanOrEqual(300);
        expect(res.status()).toBeLessThan(400);
        expect(res.headers()["location"]).toContain("/zh-CN");
    });

    test("cookie app-lang 优先于 Accept-Language", async ({ request }) => {
        const res = await request.get("/", {
            headers: {
                cookie: "app-lang=zh-CN",
                "accept-language": "en-US",
            },
            maxRedirects: 0,
        });
        expect(res.headers()["location"]).toContain("/zh-CN");
    });
});

test.describe("locale 规范化", () => {
    test("小写 /zh-cn 重定向到 /zh-CN", async ({ request }) => {
        const res = await request.get("/zh-cn", { maxRedirects: 0 });
        expect(res.status()).toBeGreaterThanOrEqual(300);
        expect(res.status()).toBeLessThan(400);
        expect(res.headers()["location"]).toBe("/zh-CN");
    });
});

test("header 语言下拉显示当前语言并可切换", async ({ page }) => {
    await page.goto("/zh-CN");
    const trigger = page.getByRole("button", { name: "语言" });
    await expect(trigger).toBeVisible();
    await expect(trigger).toContainText("中文");
    await trigger.click();
    const item = page.locator('[data-switch-locale="en"]');
    await expect(item).toBeVisible();
    await item.click();
    await expect(page).toHaveURL(/\/en$/);
    const enTrigger = page.getByRole("button", { name: "Language" });
    await expect(enTrigger).toContainText("English");
});