"""End-to-end Playwright tests for the server detail page.

Distinct from test_files_overlay.py because the server-detail page
is NOT a files-overlay (`files_overlay=False` in the template). It
reuses the same `_overlay_file_tree.html` partial but renders rows
in read-only mode — no edit button on filenames, no delete action,
only the download anchor in the per-row action strip.

Tier 3 from docs/superpowers/plans/2026-05-17-files-overlay-e2e-handoff.md.
"""
from __future__ import annotations

import pytest
from playwright.sync_api import Page, expect

from .conftest import login

pytestmark = pytest.mark.e2e


def test_hover_download_initiates_file_download(page: Page, server_with_files) -> None:
    """Navigate to /servers/<id>, hover a file row to defeat the
    `opacity: 0; pointer-events: none` CSS gate on `.files-row-actions`,
    click the ⬇ download link, and assert the browser receives a file
    download with the expected filename + bytes.

    Pins the contract that the read-only file tree on server-detail
    pages can download files served from the runtime/<id>/merged/
    directory via the dedicated /servers/<id>/files/download
    endpoint (separate from the files-overlay download path).

    The CSS hover gate is non-decorative: without `locator.hover()`
    first, `pointer-events: none` makes the link unclickable. A
    regression that ships row actions always-visible (or always-hidden)
    would change the user-flow ergonomics; if the gate semantics ever
    move, this test needs an update.
    """
    base = server_with_files["base_url"]
    server_id = server_with_files["server_id"]
    merged_root = server_with_files["merged_root"]
    expected_bytes = (merged_root / "server.cfg").read_bytes()

    login(page, base)
    page.goto(f"{base}/servers/{server_id}")

    # The file tree lives inside the Files tab pane (hidden by default).
    # Switch to it first so the row is visible and hover-clickable.
    strip = page.locator("[data-tab-strip]")
    strip.locator('[role="tab"][data-tab="files"]').click()

    # On server detail, files_overlay=False in the template, so the
    # row <li> has no data-target-path. Scope to the tab pane (not the
    # expand modal which also contains a copy of the file tree) and match
    # by row class + visible filename text.
    files_pane = strip.locator('[role="tabpanel"][data-tab="files"]')
    row = files_pane.locator("li.file-tree-row-file", has_text="server.cfg")
    expect(row).to_be_visible(timeout=5000)
    row.hover()

    download_link = row.locator('a.files-row-action[title="Download"]')
    with page.expect_download() as dl_info:
        download_link.click()
    download = dl_info.value

    assert download.suggested_filename == "server.cfg"
    # Playwright auto-saves to a temp dir we can read back from.
    assert download.path().read_bytes() == expected_bytes


def test_tabs_switch_between_log_console_files(page: Page, server_with_files) -> None:
    """The inspection strip on /servers/<id> defaults to the Log tab and
    switches tab + tabpane visibility on click. Active-tab state is
    mirrored on the strip via data-active-tab.
    """
    base = server_with_files["base_url"]
    sid = server_with_files["server_id"]
    login(page, base)
    page.goto(f"{base}/servers/{sid}")

    strip = page.locator("[data-tab-strip]")
    expect(strip).to_be_visible()
    expect(strip).to_have_attribute("data-active-tab", "log")

    # Click Console
    strip.locator('[role="tab"][data-tab="console"]').click()
    expect(strip).to_have_attribute("data-active-tab", "console")
    expect(strip.locator('[role="tabpanel"][data-tab="console"]')).to_be_visible()
    expect(strip.locator('[role="tabpanel"][data-tab="log"]')).to_be_hidden()

    # Click Files
    strip.locator('[role="tab"][data-tab="files"]').click()
    expect(strip).to_have_attribute("data-active-tab", "files")
    expect(strip.locator('[role="tabpanel"][data-tab="files"]')).to_be_visible()


def test_expand_opens_matching_modal(page: Page, server_with_files) -> None:
    """Clicking ⛶ on the inspection strip opens the <dialog> whose id
    matches the active tab name (data-active-tab="files" → #files-modal).
    """
    base = server_with_files["base_url"]
    sid = server_with_files["server_id"]
    login(page, base)
    page.goto(f"{base}/servers/{sid}")

    strip = page.locator("[data-tab-strip]")
    strip.locator('[role="tab"][data-tab="files"]').click()
    strip.locator(".strip-expand").click()

    dialog = page.locator("dialog#files-modal")
    expect(dialog).to_have_attribute("open", "")


def test_console_tab_pinned_to_bottom_on_activation(page: Page, server_with_console_history) -> None:
    """Clicking the Console tab leaves the transcript scrolled to its
    bottom — the newest seeded command must be visible, not the oldest."""
    base = server_with_console_history["base_url"]
    sid = server_with_console_history["server_id"]
    login(page, base)
    page.goto(f"{base}/servers/{sid}")

    strip = page.locator("[data-tab-strip]")
    strip.locator('[role="tab"][data-tab="console"]').click()

    transcript = page.locator(f"#console-transcript-inline-{sid}")
    expect(transcript).to_be_visible()

    bottom_distance = transcript.evaluate(
        "(el) => el.scrollHeight - el.scrollTop - el.clientHeight"
    )
    assert abs(bottom_distance) < 2, f"transcript not pinned to bottom: {bottom_distance}px"

    line_count = transcript.locator(".console-line").count()
    assert line_count == 20, f"inline expected 20 lines, got {line_count}"


def test_console_pane_pinned_after_command_submit(page: Page, server_with_console_history) -> None:
    """After submitting a command, the transcript scrolls so the new line
    is visible at the bottom.

    The dev server has no live RCON, but the POST still records a
    CommandHistory row and HTMX appends a console-line to the transcript;
    that's enough to exercise the autoscroll path.
    """
    base = server_with_console_history["base_url"]
    sid = server_with_console_history["server_id"]
    login(page, base)
    page.goto(f"{base}/servers/{sid}")

    strip = page.locator("[data-tab-strip]")
    strip.locator('[role="tab"][data-tab="console"]').click()

    transcript = page.locator(f"#console-transcript-inline-{sid}")
    pane = page.locator('[role="tabpanel"][data-tab="console"]')
    cmd_input = pane.locator('input[name="command"]')
    cmd_input.fill("verify_submit")
    cmd_input.press("Enter")

    expect(transcript.locator(".console-line", has_text="verify_submit")).to_be_visible()

    bottom_distance = transcript.evaluate(
        "(el) => el.scrollHeight - el.scrollTop - el.clientHeight"
    )
    assert abs(bottom_distance) < 2, f"transcript not pinned after submit: {bottom_distance}px"