/**
 * Recipient-native agent snapshot card/import E2E spec.
 *
 * These tests exercise the AgentSnapshotCard rendered in a message timeline
 * when an .agent.json or .agent.png attachment is detected, and the full
 * Add agent → preview → confirm flow.
 */
import { expect, test } from "@playwright/test";
import { installMockBridge } from "../helpers/bridge";

type CommandLogEntry = { command: string; payload: unknown };

function hasVisibleBoxShadow(boxShadow: string) {
  if (boxShadow === "none") return false;

  const colors = [...boxShadow.matchAll(/rgba?\(([^)]+)\)/gu)];
  if (colors.length === 0) return true;

  return colors.some(([, channels]) => {
    const values = channels.split(",").map((value) => value.trim());
    return values.length < 4 || Number(values[3]) > 0;
  });
}

async function readCommandLog(page: import("@playwright/test").Page) {
  return page.evaluate(
    () =>
      (
        window as Window & {
          __BUZZ_E2E_COMMAND_LOG__?: CommandLogEntry[];
        }
      ).__BUZZ_E2E_COMMAND_LOG__ ?? [],
  );
}

async function invokeMockCommand(
  page: import("@playwright/test").Page,
  command: string,
  payload: Record<string, unknown>,
) {
  // The app installs its dynamically imported bridge during bootstrap. Wait for
  // that installation after navigation instead of racing the first invoke.
  await page.waitForFunction(
    () =>
      typeof (
        window as Window & {
          __BUZZ_E2E_INVOKE_MOCK_COMMAND__?: unknown;
        }
      ).__BUZZ_E2E_INVOKE_MOCK_COMMAND__ === "function",
    null,
    { timeout: 5_000 },
  );
  return page.evaluate(
    async ({ command: cmd, payload: request }) => {
      const invoke = (
        window as Window & {
          __BUZZ_E2E_INVOKE_MOCK_COMMAND__: (
            command: string,
            payload: Record<string, unknown>,
          ) => Promise<unknown>;
        }
      ).__BUZZ_E2E_INVOKE_MOCK_COMMAND__;
      return invoke(cmd, request);
    },
    { command, payload },
  );
}

const ANALYST_PERSONA_ID = "test-analyst";
const ANALYST_PUBKEY =
  "953d3363262e86b770419834c53d2446409db6d918a57f8f339d495d54ab001f";
const SHA256 = "a".repeat(64);

/** Full imeta descriptor for a .agent.json attachment. */
const SNAPSHOT_UPLOAD_DESCRIPTOR = {
  url: `https://mock.relay/media/${SHA256}.json`,
  sha256: SHA256,
  size: 1234,
  type: "application/json",
  uploaded: Math.floor(Date.now() / 1000),
  filename: "e2e-agent.agent.json",
};

// ── Helper: seed bridge, send snapshot to #general, navigate to timeline ─────

async function seedAndSendSnapshot(
  page: import("@playwright/test").Page,
  opts: { snapshotFetchError?: string } = {},
) {
  await installMockBridge(page, {
    personas: [
      {
        id: ANALYST_PERSONA_ID,
        displayName: "Analyst",
        systemPrompt: "You are an analyst.",
      },
    ],
    managedAgents: [
      {
        pubkey: ANALYST_PUBKEY,
        name: "Analyst",
        personaId: ANALYST_PERSONA_ID,
      },
    ],
    uploadDescriptors: [SNAPSHOT_UPLOAD_DESCRIPTOR],
    ...(opts.snapshotFetchError
      ? { snapshotFetchError: opts.snapshotFetchError }
      : {}),
  });
  await page.goto("/");

  // JSON snapshots can still arrive from saved files or older clients, even
  // though new in-app shares always encode PNG. Seed one directly so this
  // recipient suite retains JSON-card coverage independent of send behavior.
  await invokeMockCommand(page, "send_channel_message", {
    channelId: "9a1657ac-f7aa-5db0-b632-d8bbeb6dfb50",
    content: `[${SNAPSHOT_UPLOAD_DESCRIPTOR.filename}](${SNAPSHOT_UPLOAD_DESCRIPTOR.url})`,
    mediaTags: [
      [
        "imeta",
        `url ${SNAPSHOT_UPLOAD_DESCRIPTOR.url}`,
        `m ${SNAPSHOT_UPLOAD_DESCRIPTOR.type}`,
        `x ${SNAPSHOT_UPLOAD_DESCRIPTOR.sha256}`,
        `size ${SNAPSHOT_UPLOAD_DESCRIPTOR.size}`,
        `filename ${SNAPSHOT_UPLOAD_DESCRIPTOR.filename}`,
      ],
    ],
  });

  // Navigate to #general.
  await page.getByTestId("channel-general").click();
}

// ── Timeline renders AgentSnapshotCard, not generic FileCard ──────────────────

test("recipient_timeline_renders_agent_snapshot_card_not_file_card", async ({
  page,
}) => {
  await seedAndSendSnapshot(page);

  // The sent attachment must render as AgentSnapshotCard.
  const card = page.getByTestId("agent-snapshot-card").last();
  await expect(card).toBeVisible({ timeout: 5000 });
  await expect(card).toHaveAttribute("data-slot", "attachment");

  // Show the agent name without the snapshot file extension.
  const title = card.locator('[data-slot="attachment-title"]');
  await expect(title).toBeVisible();
  await expect(title).toHaveText("E2e Agent");
  await expect(card).not.toContainText("e2e-agent.agent.json");

  const mediaBox = await card
    .locator('[data-slot="attachment-media"]')
    .boundingBox();
  expect(mediaBox?.width).toBe(mediaBox?.height);

  // Metadata names the sharer and keeps the file size.
  await expect(card).toContainText("Shared by npub1mock... · 1.2 KB");
  await expect(card).not.toContainText("Agent snapshot");

  // Both actions must be present.
  await expect(card.getByTestId("agent-snapshot-card-import")).toBeVisible();
  await expect(card.getByTestId("agent-snapshot-card-download")).toBeVisible();
  await expect(card.locator('[data-slot="attachment-action"]')).toHaveCount(2);
  const actions = card.locator('[data-slot="attachment-actions"] button');
  await expect(actions.nth(0)).toHaveAccessibleName("Download E2e Agent");
  await expect(actions.nth(0)).toHaveText("");
  await expect(actions.nth(1)).toHaveText("Add agent");

  const addAgentButton = actions.nth(1);
  const restingButtonStyle = await addAgentButton.evaluate((element) => {
    const style = getComputedStyle(element);
    return {
      backgroundColor: style.backgroundColor,
      boxShadow: style.boxShadow,
      color: style.color,
    };
  });
  expect(restingButtonStyle.color).not.toBe(restingButtonStyle.backgroundColor);
  expect(hasVisibleBoxShadow(restingButtonStyle.boxShadow)).toBe(false);

  await addAgentButton.hover();
  await expect
    .poll(async () =>
      hasVisibleBoxShadow(
        await addAgentButton.evaluate(
          (element) => getComputedStyle(element).boxShadow,
        ),
      ),
    )
    .toBe(false);

  const [contentBox, downloadBox, addAgentBox] = await Promise.all([
    card.locator('[data-slot="attachment-content"]').boundingBox(),
    actions.nth(0).boundingBox(),
    addAgentButton.boundingBox(),
  ]);
  expect(
    (downloadBox?.x ?? 0) - ((contentBox?.x ?? 0) + (contentBox?.width ?? 0)),
  ).toBeGreaterThanOrEqual(28);
  expect(
    (addAgentBox?.x ?? 0) - ((downloadBox?.x ?? 0) + (downloadBox?.width ?? 0)),
  ).toBeGreaterThanOrEqual(8);

  const [titleElement, descriptionElement] = await Promise.all([
    title.elementHandle(),
    card.locator('[data-slot="attachment-description"]').elementHandle(),
  ]);
  expect(
    await titleElement?.evaluate(
      (element) => element.scrollWidth <= element.clientWidth,
    ),
  ).toBe(true);
  expect(
    await descriptionElement?.evaluate(
      (element) => element.scrollWidth <= element.clientWidth,
    ),
  ).toBe(true);

  // Generic FileCard must NOT be present for this attachment.
  await expect(page.getByTestId("file-card")).toHaveCount(0);
});

// ── Download still invokes download_file, not fetch_snapshot_bytes ───────────

test("recipient_download_invokes_download_file_only", async ({ page }) => {
  await seedAndSendSnapshot(page);

  const card = page.getByTestId("agent-snapshot-card").last();
  await expect(card).toBeVisible({ timeout: 5000 });

  await card.getByTestId("agent-snapshot-card-download").click();

  const log = await readCommandLog(page);
  const downloadCmds = log.filter((e) => e.command === "download_file");
  const fetchSnapshotCmds = log.filter(
    (e) => e.command === "fetch_snapshot_bytes",
  );
  expect(downloadCmds.length).toBeGreaterThanOrEqual(1);
  expect(fetchSnapshotCmds.length).toBe(0);
});

// ── Add agent: fetch → navigate to agents → open preview ─────────────────────

test("recipient_import_navigates_to_agents_and_opens_preview", async ({
  page,
}) => {
  await seedAndSendSnapshot(page);

  const card = page.getByTestId("agent-snapshot-card").last();
  await expect(card).toBeVisible({ timeout: 5000 });

  // Click Add agent.
  await card.getByTestId("agent-snapshot-card-import").click();

  // fetch_snapshot_bytes must have been called.
  await expect(async () => {
    const log = await readCommandLog(page);
    const fetchCmds = log.filter((e) => e.command === "fetch_snapshot_bytes");
    expect(fetchCmds.length).toBeGreaterThanOrEqual(1);
  }).toPass({ timeout: 5000 });

  // download_file must NOT have been called for Add agent.
  const log = await readCommandLog(page);
  const downloadCmds = log.filter((e) => e.command === "download_file");
  expect(downloadCmds.length).toBe(0);

  // Preview dialog must open on the agents view.
  const dialog = page.getByTestId("agent-snapshot-import-dialog");
  await expect(dialog).toBeVisible({ timeout: 8000 });

  // Decoded display name must appear.
  await expect(dialog).toContainText("Imported Agent");
  const metadata = dialog.getByTestId("agent-definition-metadata");
  await expect(metadata).toContainText("Type");
  await expect(metadata).toContainText("Built-in agent");
  await expect(metadata).toContainText("Preferred model");
  await expect(metadata).toContainText("claude-opus-4-5");
  await expect(metadata).toContainText("Preferred runtime");
  await expect(metadata).toContainText("goose");
});

// ── Confirm imports the agent ─────────────────────────────────────────────────

test("recipient_import_confirm_calls_confirm_once_and_shows_result", async ({
  page,
}) => {
  await seedAndSendSnapshot(page);

  const card = page.getByTestId("agent-snapshot-card").last();
  await expect(card).toBeVisible({ timeout: 5000 });
  await card.getByTestId("agent-snapshot-card-import").click();

  const dialog = page.getByTestId("agent-snapshot-import-dialog");
  await expect(dialog).toBeVisible({ timeout: 8000 });

  // Confirm the import.
  await dialog.getByTestId("agent-snapshot-import-confirm").click();

  // confirm_agent_snapshot_import must have been called exactly once.
  await expect(async () => {
    const log = await readCommandLog(page);
    const confirmCmds = log.filter(
      (e) => e.command === "confirm_agent_snapshot_import",
    );
    expect(confirmCmds.length).toBe(1);
  }).toPass({ timeout: 5000 });
});

// ── Malformed/error candidate shows error, never opens preview ────────────────

test("recipient_fetch_error_shows_error_and_download_remains", async ({
  page,
}) => {
  await seedAndSendSnapshot(page, {
    snapshotFetchError: "hash mismatch: fetched bytes do not match",
  });

  const card = page.getByTestId("agent-snapshot-card").last();
  await expect(card).toBeVisible({ timeout: 5000 });
  await card.getByTestId("agent-snapshot-card-import").click();

  // Error must appear; preview must NOT open.
  const errorEl = card.getByTestId("agent-snapshot-card-error");
  await expect(errorEl).toBeVisible({ timeout: 5000 });
  await expect(errorEl).toContainText("hash mismatch");
  await expect(
    page.getByTestId("agent-snapshot-import-dialog"),
  ).not.toBeVisible();

  // Download must remain available after error.
  await expect(card.getByTestId("agent-snapshot-card-download")).toBeVisible();
});

// ── Double-click produces one fetch/preview flow ──────────────────────────────

test("recipient_double_click_import_opens_one_preview", async ({ page }) => {
  await seedAndSendSnapshot(page);

  const card = page.getByTestId("agent-snapshot-card").last();
  await expect(card).toBeVisible({ timeout: 5000 });
  const importBtn = card.getByTestId("agent-snapshot-card-import");

  // Click Add agent.
  await importBtn.click();

  // Import dialog must open exactly once (not duplicated by rapid clicks).
  const dialog = page.getByTestId("agent-snapshot-import-dialog");
  await expect(dialog).toHaveCount(1, { timeout: 5000 });

  // Exactly one fetch_snapshot_bytes call.
  const log = await readCommandLog(page);
  const fetchCount = log.filter(
    (e) => e.command === "fetch_snapshot_bytes",
  ).length;
  expect(fetchCount).toBe(1);
});