import { expect, test, type Page } from "@playwright/test";
import { canonicalWorkspaceFixture, workspaceRevisionFixture, workspaceSummaryFixture } from "../src/test/workspace-fixtures";
import { memoryFormattingExamples } from "../src/shell/memoryFormattingExamples";

// These tests never forward API requests to an installation or invoke a real model.
const workspace = "visual-fixture";
const title = "Clinical research workspace";
const model = { provider: "test", id: "review-model", name: "Review model", reasoning: true };
const revision = workspaceRevisionFixture(workspace);
const evidence = {
  id: "evidence:cohort", title: "Cohort definition", kind: "domain", language: "en",
  purposes: ["sql_generation"], applies_to: { concepts: ["cohort"], tables: [], columns: [] },
  payload: { rule: "# Approved cohort\n\nInclude eligible patients. Review the inclusion criteria before generating SQL." },
  provenance: { source_file: "research-guide.md", supporting_excerpts: ["Eligibility is evaluated at admission."] },
  review_items: [], file: "curated/domain/cohort.md", status: "active", revision: "1",
};
const evidencePage = {
  items: [evidence], total: 1, page: 1, page_size: 25, errors: [], initialized: true,
  active_revision: "1", pending_revision: null, source_reviews: [],
  location: { repository: "/installation/workspaces", workspace: "/installation/workspaces/clinical-research",
    runtime_workspace: "/data/workspaces/clinical-research", host: "installation", command: "tht workspace consolidate",
    git_commands: ["git status", "git diff"] },
};

async function fixtures(page: Page, mode: "full" | "embedded" = "full") {
  const writes: string[] = [];
  await page.route("**/config.js", route => route.fulfill({
    contentType: "application/javascript",
    body: `window.__THOTHII_CONFIG__ = ${JSON.stringify({ backendBaseUrl: "/api", shell: { mode, defaultLocale: "en" } })};
      ${mode === "embedded" ? `
        document.documentElement.setAttribute("data-bs-theme", "light");
        const language = document.createElement("select");
        language.className = "omics-language-select";
        language.dataset.lang = "en";
        language.hidden = true;
        document.body.prepend(language);
      ` : ""}`,
  }));
  await page.route("http://127.0.0.1:5183/api/**", async route => {
    const path = new URL(route.request().url()).pathname.replace(/^\/api/, "");
    if (route.request().method() !== "GET") {
      writes.push(path);
      return route.fulfill({ status: 503, json: { message: "Visual fixture: no writes" } });
    }
    let body: unknown;
    if (path === "/auth/config") body = { mode: "mock", localLogin: false, oidcLogin: false };
    else if (path === "/me") body = { issuer: "test", subject: "admin", displayName: "Review administrator", isAdmin: true,
      roles: ["admin"], permissions: ["session.use", "session.read_all", "session.manage_all", "database.manage", "workspace.manage", "workspace.secrets.manage", "memory.manage", "evidence.manage", "pi.manage"], csrfToken: null, session: null };
    else if (path === "/settings") body = { workspace, provider: model.provider, model: model.id, thinking: "high" };
    else if (path === "/models") body = { models: [model] };
    else if (path === "/workspaces") body = [workspaceSummaryFixture(workspace, { displayName: title })];
    else if (path === `/workspaces/${workspace}`) body = { workspace: canonicalWorkspaceFixture(workspace), revision };
    else if (path.endsWith("/runtime-configuration")) body = { workspaceId: workspace, revision, configurationState: "ready", requirements: [] };
    else if (path.endsWith("/preprocessing")) body = { schemaVersion: 1, workspaceId: workspace, state: "ready", actionable: true, clearable: true,
      detail: "Catalog revision 1 is indexed.", metadataRevision: 1, preprocessedMetadataRevision: 1 };
    else if (path === "/workspace-registry/status") body = { branch: "main", ahead: 0, behind: 0, degraded: false };
    else if (path.endsWith("/memory/pending")) body = [];
    else if (path.endsWith("/memory")) body = { items: [], total: 0, page: 1, page_size: 25 };
    else if (path.endsWith("/evidence")) body = evidencePage;
    else if (path.includes("/evidence/")) body = { ...evidencePage, item: evidence };
    else if (path === "/pi-management/status") body = { ready: true, credentials: "present", hostPlatform: "macos", version: "0.80.3",
      config: { provider: model.provider, model: model.id, reasoning: "high" } };
    else if (path === "/sessions") body = [{ id: "archived-fixture", status: "finalized", question: "How many eligible patients?", name: "Cohort review",
      archived: true, active: false, workspace, created_at: "2026-09-01T12:00:00Z", updated_at: null, author: null, group: null, summary: null }];
    else if (path.endsWith("/documents")) body = [{ key: "question", title: "Original question", phase: "F1", format: "markdown", content: "# Cohort review\n\nHow many eligible patients were admitted in 2025?" }];
    else if (path === "/health/dwh") body = { ok: true, detail: "Available" };
    else if (path === "/catalog/databases") body = [];
    else if (path === "/catalog/metrics") body = { scope: "global", databaseId: null, tables: 0, columns: 0, sensitiveColumns: 0, relationships: 0,
      descriptionTargets: 0, describedTargets: 0, descriptionCoverage: 0, updatedAt: null };
    else if (path === "/catalog/metadata-generation/models") body = { models: [], default: null };
    else if (path.endsWith("-runs")) body = [];
    else return route.fulfill({ status: 404, json: { message: `Missing visual fixture: ${path}` } });
    return route.fulfill({ json: body });
  });
  return writes;
}

async function navigation(page: Page) {
  const trigger = page.getByRole("button", { name: "Navigation", exact: true });
  if (await trigger.isVisible()) await trigger.click();
}

async function admin(page: Page, name: string) {
  await navigation(page);
  const toggle = page.getByRole("button", { name: "Administration", exact: true });
  if (await toggle.getAttribute("aria-expanded") !== "true") await toggle.click();
  await page.getByRole("button", { name, exact: true }).click();
}

async function inspect(page: Page) {
  return page.evaluate(() => {
    const visible = (e: Element) => {
      const box = e.getBoundingClientRect();
      return box.width > 0 && box.height > 0 && getComputedStyle(e).visibility !== "hidden" && !e.closest("[hidden]");
    };
    return {
      overflow: document.documentElement.scrollWidth - innerWidth,
      serif: [...document.querySelectorAll("h1,h2,h3,h4,button,label")].filter(visible)
        .filter(e => /Fraunces|Georgia|Times|ui-serif/.test(getComputedStyle(e).fontFamily)).map(e => e.textContent?.slice(0,60)),
      tiny: [...document.querySelectorAll("h1,h2,h3,h4,button,label,small")].filter(visible)
        .filter(e => parseFloat(getComputedStyle(e).fontSize) < 12).map(e => e.textContent?.slice(0,60)),
    };
  });
}

for (const width of [390, 1280]) {
  test(`session navigation has readiness dot and bounded accordion lists at ${width}px`, async ({ page }, testInfo) => {
    await page.setViewportSize({ width, height: 1000 });
    const writes = await fixtures(page);
    const sessions = Array.from({ length: 80 }, (_, index) => ({
      id: `nav-${index}`, name: `Session ${index}`, question: `Question ${index}`,
      archived: index >= 40, active: false, status: index >= 40 ? "finalized" : "open",
      workspace, group: null, author: null, summary: null,
      created_at: "2026-09-01T12:00:00Z", updated_at: null,
    }));
    await page.route("**/api/sessions?*", route => route.fulfill({ json: sessions }));
    await page.route("**/api/sessions", route => route.fulfill({ json: sessions }));
    await page.goto("/");
    await navigation(page);
    await page.getByRole("button", { name: "Administration", exact: true }).click();
    const workspaceButton = page.getByRole("button", { name: "Workspace", exact: true });
    await expect(workspaceButton.getByRole("img")).toHaveAttribute("data-ready", "true");
    await expect(workspaceButton).toHaveAccessibleDescription("Workspace readiness: ready");
    await expect(page.getByText("Workspace readiness: ready", { exact: true })).toHaveCount(0);
    const green = await workspaceButton.getByRole("img").evaluate(el => getComputedStyle(el).backgroundColor);
    const active = page.getByRole("button", { name: "Active sessions", exact: true });
    const archive = page.getByRole("button", { name: "Archive (40)", exact: true });
    await expect(active).toHaveAttribute("aria-expanded", "false");
    await expect(archive).toHaveAttribute("aria-expanded", "false");
    await expect(page.getByRole("checkbox", { name: "Select all" })).toHaveCount(0);
    await expect(page.getByText("Sessions", { exact: true })).toHaveCount(0);
    const activeBox = await active.boundingBox();
    const archiveBox = await archive.boundingBox();
    expect(archiveBox!.y - activeBox!.y - activeBox!.height).toBeLessThan(8);
    await page.screenshot({ path: testInfo.outputPath("session-accordions-closed.png"), animations: "disabled" });
    for (const name of ["Active sessions", "Archive (40)"]) {
      await page.getByRole("button", { name, exact: true }).click();
      await expect(name === "Active sessions" ? archive : active).toHaveAttribute("aria-expanded", "false");
      await expect(page.locator(".thot-session-accordion__panel:visible")).toHaveCount(1);
      const panel = page.getByRole("region", { name, exact: true });
      await expect(panel.getByRole("checkbox", { name: "Select all" })).toBeVisible();
      await expect(panel).toHaveCSS("overflow-y", "auto");
      const dimensions = await panel.evaluate(el => ({ height: el.getBoundingClientRect().height, scroll: el.scrollHeight, client: el.clientHeight }));
      expect(dimensions.height).toBeLessThanOrEqual(288);
      expect(dimensions.client).toBeGreaterThan(30);
      expect(dimensions.scroll).toBeGreaterThan(dimensions.client);
      const box = await panel.boundingBox();
      expect(box!.y + box!.height).toBeLessThanOrEqual(1000);
      await panel.evaluate(el => { el.scrollTop = el.scrollHeight; });
      expect(await panel.evaluate(el => el.scrollTop)).toBeGreaterThan(0);
    }
    await page.screenshot({ path: testInfo.outputPath("session-accordions.png"), animations: "disabled" });
    await expect(archive).toBeInViewport();
    expect((await inspect(page)).overflow).toBe(0);
    // A refetch failure must not keep a stale green signal.
    await page.route("**/api/workspaces/*/preprocessing", route => route.fulfill({ status: 503, json: { error: "Fixture unavailable" } }));
    await expect(workspaceButton.getByRole("img")).toHaveAttribute("data-ready", "false", { timeout: 15000 });
    await expect(workspaceButton).toHaveAccessibleDescription("Workspace readiness: unavailable");
    expect(await workspaceButton.getByRole("img").evaluate(el => getComputedStyle(el).backgroundColor)).not.toBe(green);
    expect(writes).toEqual([]);
  });
}

for (const width of [390, 1280, 2400]) {
  test(`knowledge readers use available width and readable paragraphs at ${width}px`, async ({ page }, testInfo) => {
    await page.setViewportSize({ width, height: 1100 });
    const writes = await fixtures(page);
    const sample = memoryFormattingExamples[0];
    const longEvidence = { ...evidence, applies_to: { concepts: ["Esempio simulato"], tables: ["demo_visuale.identificatore_lungo_per_la_verifica_della_formattazione"], columns: [] },
      payload: { rule: sample.detail + "\n\n" + [1, 2, 3, 4, 5, 6].map(level => "#".repeat(level) + " Sottotitolo " + level + "\n\nTesto della sottosezione.").join("\n\n") + "\n\n```sql\nSELECT 1;\n```" }, provenance: { source_file: "source/demo.md", supporting_excerpts: ["**Esempio simulato** con `codice_inline` e un collegamento alla regola.\n\nSecondo paragrafo di provenienza."] } };
    await page.route(`**/api/workspaces/${workspace}/evidence/*`, route => route.fulfill({ json: { ...evidencePage, item: longEvidence } }));
    await page.goto("/");
    await admin(page, "Evidence");
    await page.getByRole("button", { name: evidence.title, exact: true }).click();
    const evidenceDetail = page.getByRole("region", { name: "Evidence detail" });
    const article = evidenceDetail.locator("article");
    await expect(article).toHaveCSS("max-width", "none");
    const rule = article.locator(".thot-knowledge-prose").first();
    await expect(rule.locator(":scope > p")).not.toHaveCount(1);
    await expect(rule.locator("p").first()).toHaveCSS("max-width", "none");
    await expect(article.locator(".thot-knowledge-title")).toHaveCSS("font-size", "24px");
    for (const heading of await article.locator(".thot-knowledge-heading").all()) {
      await expect(heading).toHaveCSS("font-size", "20px");
      await expect(heading).toHaveCSS("font-weight", "600");
      await expect(heading).toHaveCSS("margin-bottom", "8px");
    }
    const bodyFamily = await rule.evaluate(el => getComputedStyle(el).fontFamily);
    expect(bodyFamily).toContain("Manrope");
    for (const paragraph of await article.locator("section > p:not(.thot-knowledge-meta), .thot-knowledge-prose p").all()) {
      await expect(paragraph).toHaveCSS("font-size", "16px");
      await expect(paragraph).toHaveCSS("line-height", "26.4px");
      await expect(paragraph).toHaveCSS("font-family", bodyFamily);
    }
    for (const heading of await rule.locator("h1,h2,h3,h4,h5,h6").all()) {
      await expect(heading).toHaveCSS("font-size", "16px");
      await expect(heading).toHaveCSS("font-weight", "600");
      await expect(heading).toHaveCSS("font-family", bodyFamily);
    }
    await expect(rule.locator("pre code")).toHaveCSS("font-size", "14px");
    await expect(rule.locator("p code").first()).toHaveCSS("font-size", "14px");
    expect(await article.evaluate(el => {
      const parent = el.parentElement!;
      const css = getComputedStyle(parent);
      return Math.abs(el.getBoundingClientRect().width - (parent.clientWidth - parseFloat(css.paddingLeft) - parseFloat(css.paddingRight)));
    })).toBeLessThan(2);
    const copy = article.getByRole("button", { name: "Copy Evidence file path", exact: true });
    await expect(copy).toHaveText("");
    await expect(copy.locator("svg")).toHaveCount(1);
    await expect(article.locator("strong").filter({ hasText: "Esempio simulato" })).toBeVisible();
    await article.locator(".thot-knowledge-title").scrollIntoViewIfNeeded();
    await page.screenshot({ path: testInfo.outputPath("evidence-readable.png"), animations: "disabled" });
    expect((await inspect(page)).overflow).toBe(0);

    await admin(page, "Memory");
    await page.getByRole("button", { name: sample.subject, exact: true }).click();
    const memoryDetail = page.getByRole("region", { name: "Memory detail" });
    await expect(memoryDetail.getByRole("note")).toContainText("Not saved, indexed or sent to the model.");
    const content = memoryDetail.locator(".thot-knowledge-prose").first();
    await expect(content.locator(":scope > p")).not.toHaveCount(1);
    await expect(content.locator("p").first()).toHaveCSS("max-width", "none");
    await expect(content.locator("p").nth(1)).toHaveCSS("margin-top", "20px");
    await expect(memoryDetail.locator(".thot-knowledge-title")).toHaveCSS("font-size", "24px");
    for (const heading of await memoryDetail.locator(".thot-knowledge-heading").all()) {
      await expect(heading).toHaveCSS("font-size", "20px");
      await expect(heading).toHaveCSS("font-weight", "600");
      await expect(heading).toHaveCSS("font-family", bodyFamily);
      await expect(heading).toHaveCSS("margin-bottom", "8px");
    }
    await expect(content.locator("p").first()).toHaveCSS("font-size", "16px");
    await expect(content.locator("p").first()).toHaveCSS("line-height", "26.4px");
    await expect(content.locator("p").first()).toHaveCSS("font-family", bodyFamily);
    expect(await content.evaluate(el => Math.abs(el.getBoundingClientRect().width - el.parentElement!.clientWidth))).toBeLessThan(2);
    await memoryDetail.getByRole("heading", { name: sample.subject, exact: true }).scrollIntoViewIfNeeded();
    await page.screenshot({ path: testInfo.outputPath("memory-readable.png"), animations: "disabled" });
    await expect(memoryDetail.getByRole("button", { name: "Edit card", exact: true })).toHaveCount(0);
    expect((await inspect(page)).overflow).toBe(0);
    await page.getByRole("button", { name: "Use dark theme", exact: true }).click();
    await expect(page.locator(".thot-host")).toHaveAttribute("data-theme", "dark");
    await memoryDetail.getByRole("heading", { name: sample.subject, exact: true }).scrollIntoViewIfNeeded();
    await page.screenshot({ path: testInfo.outputPath("memory-readable-dark.png"), animations: "disabled" });
    await expect(content.locator("p").first()).toHaveCSS("line-height", "26.4px");
    await page.getByRole("button", { name: memoryFormattingExamples[1].subject, exact: true }).click();
    await expect(memoryDetail.getByRole("heading", { name: "Prima del conteggio" })).toHaveCSS("font-size", "16px");
    await expect(memoryDetail.getByRole("heading", { name: "Prima del conteggio" })).toHaveCSS("font-family", bodyFamily);
    await memoryDetail.locator(".thot-knowledge-title").scrollIntoViewIfNeeded();
    await page.screenshot({ path: testInfo.outputPath("memory-headings-dark.png"), animations: "disabled" });
    await page.getByRole("button", { name: memoryFormattingExamples[2].subject, exact: true }).click();
    await expect(memoryDetail.locator("pre")).toHaveCSS("font-size", "14px");
    expect((await inspect(page)).overflow).toBe(0);
    expect(writes).toEqual([]);
  });
}

for (const width of [390, 1280]) {
  test(`full shell keeps the visual revision across language and theme changes at ${width}px`, async ({ page }, testInfo) => {
    await page.setViewportSize({ width, height: 1000 });
    const writes = await fixtures(page);
    await page.goto("/");
    const header = page.locator(".thot-full-header");
    await expect(header).toBeVisible();
    await expect(header).toHaveCSS("background-color", "rgb(203, 51, 59)");
    expect(await header.locator(".thot-full-header__brand span").evaluate(el =>
      getComputedStyle(el).color === getComputedStyle(el.closest("header")!).color,
    )).toBe(true);
    await page.evaluate(() => document.fonts.ready);
    expect(await page.evaluate(() => [...document.fonts].some(font =>
      font.family.includes("Manrope Variable") && font.status === "loaded",
    ))).toBe(true);
    const layout = await page.locator(".thot-context-layout").boundingBox();
    expect(layout!.x).toBeGreaterThanOrEqual(20);
    expect(Math.abs(layout!.x - (width - layout!.x - layout!.width))).toBeLessThan(1);
    await admin(page, "Database");
    await expect(page.getByRole("heading", { name: "Database management", exact: true })).toBeVisible();
    await expect(page.locator(".thot-fleet-ledger__header-status")).toHaveCSS("padding-top", "16px");
    await page.getByRole("button", { name: /Working context/ }).click();
    const fields = page.locator(".thot-context-fields");
    const done = fields.getByRole("button", { name: "Done", exact: true });
    await expect(done).toBeVisible();
    if (width >= 1280) {
      const workspaceBox = await fields.getByRole("combobox", { name: "Workspace", exact: true }).boundingBox();
      const modelBox = await fields.getByRole("combobox", { name: "Model", exact: true }).boundingBox();
      const doneBox = await done.boundingBox();
      expect(Math.abs(workspaceBox!.y - modelBox!.y)).toBeLessThan(1);
      expect(Math.abs(modelBox!.y - doneBox!.y)).toBeLessThan(1);
      expect(doneBox!.x).toBeGreaterThan(modelBox!.x + modelBox!.width);
      for (const name of ["My sessions", "All sessions"]) {
        await expect(page.getByRole("tab", { name, exact: true })).toHaveCSS("border-bottom-width", "1px");
      }
    }
    expect(await inspect(page)).toEqual({ overflow: 0, serif: [], tiny: [] });
    await page.screenshot({ path: testInfo.outputPath("full-context-light.png"), animations: "disabled" });
    await done.click();
    await header.getByRole("combobox").selectOption("it");
    await expect(page.getByRole("heading", { name: "Gestione database", exact: true })).toBeVisible();
    await expect(page.locator(".thot-administration-eyebrow")).toHaveText("Amministrazione");
    await expect(page.locator(".thot-context-summary small")).toHaveText("Contesto di lavoro");
    await page.getByRole("button", { name: "Usa il tema scuro", exact: true }).click();
    await expect(page.locator(".thot-host")).toHaveAttribute("data-theme", "dark");
    await expect(header).toHaveCSS("background-color", "rgb(203, 51, 59)");
    await page.screenshot({ path: testInfo.outputPath("full-header-dark.png"), animations: "disabled" });
    expect(await inspect(page)).toEqual({ overflow: 0, serif: [], tiny: [] });
    await page.reload();
    await expect(page.getByRole("heading", { name: "Gestione database", exact: true })).toBeVisible();
    await expect(header.getByRole("combobox")).toHaveValue("it");
    await expect(page.locator(".thot-host")).toHaveAttribute("data-theme", "dark");
    await page.getByRole("button", { name: "Usa il tema chiaro", exact: true }).click();
    await header.getByRole("combobox").selectOption("en");
    await expect(page.getByRole("heading", { name: "Database management", exact: true })).toHaveCSS("font-size", "24px");
    expect(await inspect(page)).toEqual({ overflow: 0, serif: [], tiny: [] });
    expect(writes).toEqual([]);
  });
}

test("session tabs have padded labels and matching one-pixel borders on every side", async ({ page }, testInfo) => {
  await page.setViewportSize({ width: 1280, height: 1000 });
  await fixtures(page);
  await page.goto("/?thoth_route=administration%2Fdatabase");
  const header = page.locator(".thot-full-header");
  for (const locale of ["en", "it"]) {
    await header.getByRole("combobox").selectOption(locale);
    await expect(page.getByRole("button", { name: locale === "it" ? "Sessione" : "Session", exact: true })).toHaveCount(1);
    await expect(page.getByRole("button", { name: /^(New session|Return to session|Nuova sessione|Torna alla sessione)$/ })).toHaveCount(0);
    const tabs = page.locator('[role="tablist"]').getByRole("tab");
    for (const theme of ["light", "dark"]) {
      if (theme === "dark") await header.getByRole("button", { name: locale === "it" ? "Usa il tema scuro" : "Use dark theme", exact: true }).click();
      for (const selected of [0, 1]) {
        await tabs.nth(selected).click();
        await expect(tabs.nth(selected)).toHaveAttribute("aria-selected", "true");
        for (const tab of await tabs.all()) {
          await expect(tab).toHaveCSS("border-bottom-width", "1px");
          const borders = await tab.evaluate(el => {
            const css = getComputedStyle(el);
            return { widths: [css.borderTopWidth, css.borderRightWidth, css.borderBottomWidth, css.borderLeftWidth],
              colors: [css.borderTopColor, css.borderRightColor, css.borderBottomColor, css.borderLeftColor],
              paddingX: css.paddingLeft, paddingY: css.paddingTop,
              fits: el.scrollHeight <= el.clientHeight };
          });
          expect(borders.widths).toEqual(["1px", "1px", "1px", "1px"]);
          expect(new Set(borders.colors).size).toBe(1);
          expect(borders).toMatchObject({ paddingX: "11px", paddingY: "3px", fits: true });
        }
      }
      await page.mouse.move(0, 0);
      await page.screenshot({ path: testInfo.outputPath(`session-tabs-${locale}-${theme}.png`), animations: "disabled" });
      if (theme === "dark") await header.getByRole("button", { name: locale === "it" ? "Usa il tema chiaro" : "Use light theme", exact: true }).click();
    }
  }
});

for (const locale of ["en", "it"]) {
  test(`login keeps only the main title in ${locale}`, async ({ page }, testInfo) => {
    await fixtures(page);
    await page.route("**/config.js", route => route.fulfill({ contentType: "application/javascript",
      body: `window.__THOTHII_CONFIG__ = ${JSON.stringify({ backendBaseUrl: "/api", shell: { mode: "full", defaultLocale: locale } })};` }));
    await page.route("**/api/auth/config", route => route.fulfill({ json: { mode: "local", localLogin: true, oidcLogin: false } }));
    await page.route("**/api/me", route => route.fulfill({ status: 401, json: { code: "unauthenticated" } }));
    await page.goto("/");
    await expect(page.getByRole("heading", { name: locale === "it" ? "Accedi a ThothII" : "Sign in to ThothII" })).toBeVisible();
    await expect(page.getByText(locale === "it" ? "Accesso a ThothII" : "ThothII access", { exact: true })).toHaveCount(0);
    await expect(page.getByText(locale === "it" ? "Usa l’account della tua installazione per continuare." : "Use your installation account to continue.", { exact: true })).toHaveCount(0);
    await page.screenshot({ path: testInfo.outputPath(`login-${locale}.png`), animations: "disabled" });
  });
}

test("language selector has no pointer ring and retains keyboard focus in both themes", async ({ page }, testInfo) => {
  await fixtures(page);
  await page.goto("/");
  const language = page.getByRole("combobox", { name: "Interface language" });
  for (const theme of ["light", "dark"]) {
    if (theme === "dark") await page.getByRole("button", { name: "Use dark theme", exact: true }).click();
    await language.click();
    await page.keyboard.press("Escape");
    await expect(language).toBeFocused();
    await expect(language).toHaveCSS("outline-style", "none");
    await expect(language).toHaveCSS("box-shadow", "none");
    await page.screenshot({ path: testInfo.outputPath(`language-pointer-${theme}.png`), animations: "disabled" });
    await page.keyboard.press("Tab");
    await page.keyboard.press("Shift+Tab");
    await expect(language).toBeFocused();
    await expect(language).toHaveCSS("outline-style", "solid");
  }
});

for (const route of ["/", "/?thoth_route=administration%2Fdatabase"]) {
  test(`Core prompt remains readable after loading ${route}`, async ({ page }, testInfo) => {
    const writes = await fixtures(page);
    await page.goto(route);
    if (route !== "/") {
      await navigation(page);
      await page.getByRole("button", { name: "Session", exact: true }).click();
    }
    const prompt = page.getByRole("textbox", { name: "New question", exact: true });
    await expect(prompt).toBeVisible();
    await prompt.focus();
    const readable = async () => {
      await expect.poll(() => prompt.evaluate(el => {
        const style = getComputedStyle(el);
        return el.clientHeight >= parseFloat(style.lineHeight) + parseFloat(style.paddingTop) + parseFloat(style.paddingBottom);
      })).toBe(true);
    };
    await readable();
    await expect(prompt).toHaveCSS("outline-style", "none");
    await page.screenshot({ path: testInfo.outputPath("Prompt-focused.png") });
    // Full-mode gutters can wrap the empty placeholder on a narrow viewport.
    // Compare clearing with that same viewport's initial height, not a single-line constant.
    await page.setViewportSize({ width: 390, height: 900 });
    await readable();
    const emptyHeight = await prompt.evaluate(el => el.clientHeight);
    await prompt.fill("First line");
    await prompt.press("Shift+Enter");
    await prompt.press("a");
    await expect(prompt).toHaveValue("First line\na");
    await expect.poll(() => prompt.evaluate(el => el.clientHeight)).toBeGreaterThan(40);
    const question = "Compare eligible patients across the available cohorts. ".repeat(30);
    await prompt.fill(question);
    await page.setViewportSize({ width: 390, height: 900 });
    await readable();
    await expect.poll(() => prompt.evaluate(el => el.clientHeight)).toBe(160);
    expect(await prompt.evaluate(el => el.scrollHeight > el.clientHeight)).toBe(true);
    await admin(page, "Database");
    await navigation(page);
    await page.getByRole("button", { name: "Session", exact: true }).click();
    await expect(prompt).toHaveValue(question);
    await readable();
    await page.screenshot({ path: testInfo.outputPath("Prompt-multiline-mobile.png") });
    await prompt.fill("");
    await readable();
    await expect.poll(() => prompt.evaluate(el => el.clientHeight)).toBe(emptyHeight);
    expect(writes).toEqual(route === "/" ? ["/runtime/prewarm"] : ["/runtime/prewarm", "/runtime/prewarm"]);
  });
}

for (const width of [390, 649, 768, 1280, 1600]) {
  test(`all surfaces retain shared typography at ${width}px`, async ({ page }, testInfo) => {
    await page.setViewportSize({ width, height: 1000 });
    const writes = await fixtures(page);
    await page.goto("/");
    await expect(page.getByTestId("app-shell")).toBeVisible();
    await expect(page.getByRole("button", { name: /Working context/ })).toContainText(title);
    for (const name of ["Workspace", "Database", "Memory", "Evidence", "Pi configuration"]) {
      await admin(page, name);
      const heading = page.getByRole("heading", { name: `${name === "Pi configuration" ? "Pi" : name} management`, exact: true });
      await expect(heading).toBeVisible();
      await expect(heading).toHaveCSS("font-size", "24px");
      expect(await inspect(page)).toEqual({ overflow: 0, serif: [], tiny: [] });
      if (name === "Memory") await expect(page.getByText("No memory cards yet.", { exact: false })).toBeVisible();
      if (name === "Database") {
        const statuses = page.locator(".thot-fleet-ledger__header-status .thot-fleet-ledger__status-item");
        await expect(statuses).toHaveCount(3);
        const catalog = await statuses.nth(0).boundingBox();
        const operations = await statuses.nth(1).boundingBox();
        const metadata = await statuses.nth(2).boundingBox();
        const summary = await page.locator(".thot-fleet-ledger__kpi-section > h2").boundingBox();
        const summaryBlock = await page.locator(".thot-fleet-ledger__kpi-section").boundingBox();
        const navigationBlock = await page.locator(".thot-fleet-ledger__navigation").boundingBox();
        const gridBlock = await page.locator(".thot-fleet-ledger__content").boundingBox();
        const databasesLabel = await page.locator(".thot-fleet-ledger__navigation").getByText("Databases", { exact: true }).boundingBox();
        const tablesLabel = await page.locator(".thot-fleet-ledger__kpi-label").getByText("Tables", { exact: true }).boundingBox();
        expect(Math.abs(summaryBlock!.x - gridBlock!.x)).toBeLessThan(1);
        expect(Math.abs(navigationBlock!.x - gridBlock!.x)).toBeLessThan(1);
        expect(Math.abs(summary!.x - databasesLabel!.x)).toBeLessThan(1);
        expect(Math.abs(summary!.x - tablesLabel!.x)).toBeLessThan(1);
        const gridLabel = await page.locator(".thot-fleet-grid-toolbar").getByText("Workspace databases", { exact: true }).boundingBox();
        expect(Math.abs(summary!.x - gridLabel!.x)).toBeLessThan(1);
        expect(Math.abs(summaryBlock!.width - gridBlock!.width)).toBeLessThan(1);
        expect(Math.abs(navigationBlock!.width - gridBlock!.width)).toBeLessThan(1);
        const contextTrigger = page.getByRole("button", { name: /Working context/ });
        await contextTrigger.click();
        const contextBody = page.locator(".thot-context-body");
        await expect(contextBody).toBeVisible();
        await expect(contextBody).not.toContainText("Your last choices take precedence");
        await expect(contextBody).not.toContainText("Installation default");
        await expect(contextBody).not.toContainText("Last choice");
        const contextBlock = await contextBody.boundingBox();
        const workspaceSelect = await contextBody.getByRole("combobox", { name: "Workspace", exact: true }).boundingBox();
        expect(Math.abs(contextBlock!.x - summaryBlock!.x)).toBeLessThan(1);
        expect(Math.abs(workspaceSelect!.x - summary!.x)).toBeLessThan(1);
        expect(await inspect(page)).toEqual({ overflow: 0, serif: [], tiny: [] });
        await page.screenshot({ path: testInfo.outputPath("Context-expanded.png") });
        await contextBody.getByRole("button", { name: "Done", exact: true }).click();
        expect(Math.abs(catalog!.x - summary!.x)).toBeLessThan(1);
        const workArea = await page.locator(".thot-fleet-ledger__workspace").boundingBox();
        if (workArea!.width >= 768) {
          const coverage = await page.locator(".thot-fleet-ledger__kpi-label").filter({ hasText: "Description coverage" }).boundingBox();
          expect(Math.abs(metadata!.x - coverage!.x)).toBeLessThan(1);
          expect(Math.abs(operations!.x - (catalog!.x + metadata!.x) / 2)).toBeLessThan(1);
        }
        for (const status of await statuses.all()) {
          const label = await status.locator(".thot-fleet-ledger__status-label > span:first-child").boundingBox();
          const mark = await status.locator(".thot-fleet-ledger__status-mark").boundingBox();
          const value = await status.locator(".thot-fleet-ledger__status-value").boundingBox();
          expect(mark!.x - (label!.x + label!.width)).toBeGreaterThanOrEqual(7);
          expect(Math.abs(label!.x - value!.x)).toBeLessThan(1);
        }
      }
      if (name === "Evidence") {
        const search = await page.getByRole("textbox", { name: "Search Evidence" }).boundingBox();
        expect(search!.width).toBeGreaterThan(180);
      }
      await page.screenshot({ path: testInfo.outputPath(`${name.replaceAll(" ", "-")}.png`) });
    }
    await page.getByRole("button", { name: "Host maintenance", exact: true }).click();
    await expect(page.getByRole("tab", { name: "macOS", exact: true })).toHaveAttribute("aria-selected", "true");
    await expect(page.getByRole("region", { name: "Pi operator workflow" })).toHaveCSS("font-size", "16px");
    await page.screenshot({ path: testInfo.outputPath("Pi-guide.png") });
    await navigation(page);
    await page.getByRole("tab", { name: "All sessions", exact: true }).click();
    await expect(page.locator(".thot-wordmark--sidebar")).toHaveCSS("font-size", "32px");
    await page.getByRole("button", { name: /Archive \(1\)/ }).click();
    await page.getByRole("button", { name: "Cohort review", exact: true }).click();
    const documents = page.getByRole("complementary", { name: "Session summary" });
    await expect(documents).toBeVisible();
    await expect(documents.getByRole("heading", { name: "Original question" })).toBeVisible();
    const bounds = await documents.boundingBox();
    expect(bounds!.width).toBeGreaterThanOrEqual(Math.min(width, 300));
    expect(await inspect(page)).toEqual({ overflow: 0, serif: [], tiny: [] });
    await page.screenshot({ path: testInfo.outputPath("Sessions.png") });
    await page.getByRole("button", { name: "Close panel", exact: true }).click();
    await expect(page.getByRole("textbox", { name: "New question", exact: true })).toBeVisible();
    await expect(page.locator(".thot-wordmark--core")).toHaveCSS("font-size", "48px");
    await page.screenshot({ path: testInfo.outputPath("Core.png") });
    expect(writes).toEqual([]);
  });
}

test("theme follows the app, not an unrelated OS preference; keyboard tabs and dirty guard remain", async ({ page }, testInfo) => {
  await page.setViewportSize({ width: 1280, height: 900 });
  const writes = await fixtures(page);
  await page.emulateMedia({ colorScheme: "dark" });
  await page.goto("/");
  await expect(page.getByTestId("app-shell")).toBeVisible();
  await expect(page.getByRole("banner", { name: "Application header" })).toBeVisible();
  await admin(page, "Pi configuration");
  const testButton = page.getByRole("button", { name: "Test catalog default", exact: true });
  await expect(testButton).toHaveCSS("background-color", "oklch(0.9985 0.0006 17.2)");
  await page.getByRole("button", { name: "Use dark theme", exact: true }).click();
  await expect(page.locator(".thot-context-trigger")).toHaveCSS("color", "oklch(0.931 0 90)");
  await expect(testButton).toHaveCSS("background-color", "oklch(0.62 0.008 23.2 / 0.3)");
  await page.screenshot({ path: testInfo.outputPath("Pi-dark.png") });
  const guideButton = page.getByRole("button", { name: "Host maintenance", exact: true });
  await guideButton.click();
  const mac = page.getByRole("tab", { name: "macOS", exact: true });
  await mac.focus(); await page.keyboard.press("ArrowRight");
  await expect(page.getByRole("tab", { name: "Windows", exact: true })).toBeFocused();
  await expect(page.getByRole("tab", { name: "Windows", exact: true })).toHaveAttribute("aria-selected", "true");
  await admin(page, "Memory");
  await page.getByRole("button", { name: "New card", exact: true }).click();
  await page.getByRole("textbox", { name: "Title", exact: true }).fill("Keep this draft");
  await page.getByRole("button", { name: "Session", exact: true }).click();
  await expect(page.getByRole("textbox", { name: "Title", exact: true })).toHaveValue("Keep this draft");
  await page.screenshot({ path: testInfo.outputPath("Memory-dark-unsaved.png") });
  await page.getByRole("button", { name: "Cancel", exact: true }).click();
  await page.getByRole("button", { name: "Session", exact: true }).click();
  await expect(page.getByRole("textbox", { name: "New question", exact: true })).toBeVisible();
  expect(writes).toEqual(["/runtime/prewarm"]);
});

test("host header and left rail leave the application a bounded working area", async ({ page }, testInfo) => {
  await page.setViewportSize({ width: 1280, height: 1000 });
  await fixtures(page, "embedded");
  await page.goto("/");
  await expect(page.getByTestId("app-shell")).toBeVisible();
  await expect(page.locator(".thot-full-header")).toHaveCount(0);
  // Geometry fixture, not a replacement for acceptance inside the real Omics deployment.
  await page.addStyleTag({ content: `
    body { margin: 0; }
    #root { margin-left: 240px; margin-top: 72px; --thoth-app-height: calc(100dvh - 72px); }
    .px-4 { padding-left: 2.25rem !important; padding-right: 2.25rem !important; }
  ` });
  await admin(page, "Workspace");
  const shell = await page.getByTestId("app-shell").boundingBox();
  expect(shell!.x).toBe(240);
  expect(shell!.x + shell!.width).toBeLessThanOrEqual(1280);
  expect(shell!.y + shell!.height).toBeLessThanOrEqual(1000);
  expect(await inspect(page)).toEqual({ overflow: 0, serif: [], tiny: [] });
  await page.screenshot({ path: testInfo.outputPath("Host-bounded-Workspace.png") });
  await admin(page, "Evidence");
  const search = await page.getByRole("textbox", { name: "Search Evidence" }).boundingBox();
  expect(search!.width).toBeGreaterThan(180);
  expect(await inspect(page)).toEqual({ overflow: 0, serif: [], tiny: [] });
});

for (const width of [390, 1280]) {
  test(`embedded active session keeps steering and stop inside the portal at ${width}px`, async ({ page }, testInfo) => {
    await page.setViewportSize({ width, height: 822 });
    await fixtures(page, "embedded");
    await page.route("**/api/sessions", route => route.request().method() === "POST"
      ? route.fulfill({ json: { id: "layout-session" } }) : route.fallback());
    await page.route("**/api/sessions/layout-session", route => route.fulfill({ json: { id: "layout-session", active: true, status: "open", workspace } }));
    await page.goto("/");
    // The Omics template bounds #root below its topbar and clips overflow.
    await page.addStyleTag({ content: `
      body { margin: 0; padding-top: 70px; }
      #root { height: calc(100dvh - 110px); overflow: hidden; }
    ` });
    const prompt = page.getByRole("textbox", { name: "New question", exact: true });
    await prompt.fill("Review the cohort");
    await page.getByRole("button", { name: "Send", exact: true }).click();
    const steering = page.getByRole("textbox", { name: "Steering", exact: true });
    await expect(steering).toBeVisible();
    // Drive the same store projection as streaming, without a real model.
    await page.evaluate(async () => {
      const path = "/src/store/sessionStore.ts";
      const { useSessionStore } = await import(/* @vite-ignore */ path);
      useSessionStore.getState().applyEvent({ type: "text_delta", text: "Reviewing the cohort\n".repeat(80) });
    });
    await steering.fill("Please pause the analysis\n".repeat(15));
    const stop = page.getByRole("button", { name: "Stop and save session", exact: true });
    await page.locator("#root").evaluate(el => { el.scrollTop = 0; });
    const root = await page.locator("#root").boundingBox();
    for (const control of [steering, stop]) {
      const box = await control.boundingBox();
      expect(box!.y).toBeGreaterThanOrEqual(root!.y);
      expect(box!.y + box!.height).toBeLessThanOrEqual(root!.y + root!.height);
      await expect(control).toBeInViewport();
    }
    await page.screenshot({ path: testInfo.outputPath("embedded-session.png") });
    await stop.click();
    await expect(page.getByRole("dialog", { name: "Stop the session?" })).toBeVisible();
  });
}