import { expect, test } from "@playwright/test";
import AxeBuilder from "@axe-core/playwright";

const homepage = "http://community-works-collaborative.test/";

const getBox = async (locator) => {
    const box = await locator.boundingBox();
    expect(box).not.toBeNull();
    return box;
};

const expectNear = (actual, expected, tolerance = 3) => {
    expect(Math.abs(actual - expected)).toBeLessThanOrEqual(tolerance);
};

test.use({ viewport: { width: 402, height: 874 } });

test("mobile header preserves its layout and uses the designed hamburger", async ({
    page,
}) => {
    await page.goto(homepage);

    const header = await getBox(page.locator(".site-header"));
    const logo = await getBox(page.locator(".site-header__logo"));
    const toggle = page.locator(".nav-main__toggle").first();
    const toggleBox = await getBox(toggle);
    const hamburgerIcon = toggle.locator(".nav-toggle-hamburger svg");
    const closeIcon = toggle.locator(".nav-toggle-x svg");

    expectNear(header.height, 70, 2);
    expectNear(logo.x, 16, 2);
    expectNear(logo.width, 116, 2);
    expectNear(logo.height, 36, 2);
    expectNear(toggleBox.width, 72, 2);
    expectNear(toggleBox.height, 45, 2);
    await expect(toggle).toHaveCSS(
        "background-color",
        "oklch(0.6353 0.1751 29.61)",
    );
    await expect(toggle).toHaveCSS("border-radius", "22.4px 5.6px");
    await expect(hamburgerIcon).toHaveCSS("fill", "oklch(1 0 0)");
    await expect(closeIcon).toHaveCSS("stroke", "oklch(1 0 0)");
});

test("mobile hero matches the 402px reference composition", async ({
    page,
}) => {
    await page.goto(homepage);

    const hero = await getBox(page.locator(".homepage-hero"));
    const heading = await getBox(page.locator(".homepage-hero .intro h1"));
    const vector = await getBox(
        page.locator(".homepage-hero .heroVector .vector"),
    );
    const buttons = page.locator(".homepage-hero .reset .button");
    const firstButton = await getBox(buttons.nth(0));
    const secondButton = await getBox(buttons.nth(1));

    expectNear(hero.height, 752, 8);
    expectNear(heading.x, 32, 3);
    expect(heading.width).toBeGreaterThanOrEqual(330);
    expectNear(vector.x, -414, 8);
    expectNear(firstButton.y, secondButton.y, 2);
    expectNear(firstButton.width, 148, 4);
    expectNear(secondButton.width, 156, 4);

    await expect(page.locator(".homepage-hero__location")).toBeVisible();
});

test("mobile hero CTAs remain fully visible at 320px", async ({ page }) => {
    await page.setViewportSize({ width: 320, height: 800 });
    await page.goto(homepage);

    const vector = await getBox(
        page.locator(".homepage-hero .heroVector .vector"),
    );
    const buttons = page.locator(".homepage-hero .reset .button");
    const firstButton = await getBox(buttons.nth(0));
    const secondButton = await getBox(buttons.nth(1));

    expectNear(firstButton.y, secondButton.y, 2);
    expect(secondButton.x + secondButton.width).toBeLessThanOrEqual(320);
    expect(vector.x + vector.width).toBeGreaterThanOrEqual(316);
});

test("mobile hero vector covers the 767px composition", async ({ page }) => {
    await page.setViewportSize({ width: 767, height: 900 });
    await page.goto(homepage);

    const vector = await getBox(
        page.locator(".homepage-hero .heroVector .vector"),
    );

    expect(vector.x).toBeLessThan(0);
    expect(vector.x + vector.width).toBeGreaterThanOrEqual(760);
});

test("mobile pull quote matches the reference scale", async ({ page }) => {
    await page.goto(homepage);

    const quote = await getBox(page.locator(".pull-quote"));
    const text = await getBox(page.locator(".pull-quote__text"));
    const desktopVector = page.locator(".pull-quote__vector--bg");
    const mobileVector = page.locator(".pull-quote__vector--mobile");
    const vector = await getBox(mobileVector);
    const bandHeight = await page
        .locator(".pull-quote")
        .evaluate((element) =>
            Number.parseFloat(getComputedStyle(element, "::after").height),
        );

    expectNear(quote.height, 361, 6);
    expectNear(bandHeight, 16, 1);
    expectNear(text.x - quote.x, 32, 3);
    expect(text.width).toBeGreaterThanOrEqual(330);
    expectNear(text.height, 216, 6);
    expectNear(
        text.y + text.height / 2,
        quote.y + (quote.height - bandHeight) / 2,
        8,
    );
    expectNear(vector.x, quote.x, 3);
    expectNear(vector.width, quote.width, 3);
    expectNear(vector.height, quote.height - bandHeight, 3);
    await expect(mobileVector).toBeVisible();
    await expect(desktopVector).toBeHidden();
    await expect(mobileVector).toHaveCSS("object-fit", "cover");
});

test("mobile pull quote scales proportionally through 767px", async ({
    page,
}) => {
    await page.setViewportSize({ width: 767, height: 900 });
    await page.goto(homepage);

    const quote = await getBox(page.locator(".pull-quote"));
    const text = await getBox(page.locator(".pull-quote__text"));

    expectNear(quote.height, 767 * 0.898, 6);
    expect(text.y).toBeGreaterThanOrEqual(quote.y);
    expect(text.y + text.height).toBeLessThanOrEqual(quote.y + quote.height);
    expectNear(text.y + text.height / 2, quote.y + (quote.height - 16) / 2, 8);
});

test("mobile pull quote keeps text above the band at 320px", async ({
    page,
}) => {
    await page.setViewportSize({ width: 320, height: 800 });
    await page.goto(homepage);

    const quote = await getBox(page.locator(".pull-quote"));
    const content = await getBox(page.locator(".pull-quote__content"));
    const text = await getBox(page.locator(".pull-quote__text"));

    expectNear(quote.height, 320 * 0.898, 6);
    expectNear(content.height, quote.height - 16, 3);
    expect(text.y - content.y).toBeGreaterThanOrEqual(12);
    expect(
        content.y + content.height - (text.y + text.height),
    ).toBeGreaterThanOrEqual(12);
});

test("mobile pull quote grows when its text needs more room", async ({
    page,
}) => {
    await page.goto(homepage);

    const quoteLocator = page.locator(".pull-quote");
    const initialQuote = await getBox(quoteLocator);
    await page.locator(".pull-quote__text p").evaluate((paragraph) => {
        paragraph.textContent = `${paragraph.textContent} ${paragraph.textContent} ${paragraph.textContent}`;
    });

    const quote = await getBox(quoteLocator);
    const content = await getBox(page.locator(".pull-quote__content"));
    const text = await getBox(page.locator(".pull-quote__text"));
    const vector = await getBox(page.locator(".pull-quote__vector--mobile"));

    expect(quote.height).toBeGreaterThan(initialQuote.height);
    expectNear(content.height, quote.height - 16, 3);
    expectNear(vector.height, quote.height - 16, 3);
    expect(text.y).toBeGreaterThanOrEqual(content.y);
    expect(text.y + text.height).toBeLessThanOrEqual(
        content.y + content.height,
    );
});

test("pull quote restores the configured artwork at 768px", async ({
    page,
}) => {
    await page.setViewportSize({ width: 768, height: 900 });
    await page.goto(homepage);

    const desktopVector = page.locator(".pull-quote__vector--bg");
    const mobileVector = page.locator(".pull-quote__vector--mobile");
    const quote = await getBox(page.locator(".pull-quote"));
    const vector = await getBox(desktopVector);
    const borderWidth = await page
        .locator(".pull-quote")
        .evaluate((element) =>
            Number.parseFloat(getComputedStyle(element).borderBottomWidth),
        );

    await expect(desktopVector).toBeVisible();
    await expect(mobileVector).toBeHidden();
    expectNear(vector.x, quote.x, 3);
    expectNear(vector.width, quote.width, 3);
    expectNear(vector.height, quote.height - borderWidth, 3);
    await expect(desktopVector).toHaveCSS("object-fit", "cover");
});

test("mobile pull quote matches the supplied visual reference", async ({
    page,
}) => {
    await page.goto(homepage);

    await expect(page.locator(".pull-quote")).toHaveScreenshot(
        "pullquote-reference.png",
        {
            animations: "disabled",
            maxDiffPixelRatio: 0.071,
            threshold: 0.05,
        },
    );
});

test("mobile pull quote linework render remains stable", async ({ page }) => {
    await page.goto(homepage);
    await page.locator(".pull-quote__content").evaluate((content) => {
        content.style.visibility = "hidden";
    });

    await expect(page.locator(".pull-quote__vector--mobile")).toHaveScreenshot(
        "pullquote-linework-render.png",
        {
            animations: "disabled",
            maxDiffPixelRatio: 0.001,
            threshold: 0.02,
        },
    );
});

test("mobile recent posts exposes previous and next controls", async ({
    page,
}) => {
    await page.goto(homepage);

    await expect(
        page.getByRole("button", { name: "Previous article" }),
    ).toBeVisible();
    await expect(
        page.getByRole("button", { name: "Next article" }),
    ).toBeVisible();
});

test("mobile recent posts advances to the next article", async ({ page }) => {
    await page.goto(homepage);

    const cards = page.locator(".recent-posts__card");
    await expect(cards.nth(0)).toBeVisible();
    await expect(cards.nth(1)).toBeHidden();

    await page.getByRole("button", { name: "Next article" }).click();

    await expect(cards.nth(0)).toBeHidden();
    await expect(cards.nth(1)).toBeVisible();
});

test("configured footer channels use the prepared SVG icons", async ({
    page,
}) => {
    await page.goto(homepage);

    await expect(
        page.locator('.social-links img[src*="social-facebook.svg"]'),
    ).toBeVisible();
    await expect(
        page.locator('.social-links img[src*="social-linkedin.svg"]'),
    ).toBeVisible();
});

test("mobile homepage has no automated accessibility violations", async ({
    page,
}) => {
    await page.goto(homepage);

    const results = await new AxeBuilder({ page })
        .withTags([
            "wcag2a",
            "wcag2aa",
            "wcag21a",
            "wcag21aa",
            "wcag22a",
            "wcag22aa",
        ])
        .analyze();

    expect(results.violations).toEqual([]);
});