"""app.widgets.text -- unit-level, no HTTP: constructs Widget/
TextWidgetConfig rows directly with already-parsed run structures (the
HTML-parsing step is covered separately in test_text_content.py; the
HTTP-level config-save/preview endpoints in
test_widget_config_and_queue_endpoints.py). These tests only exercise
render()'s own word-wrap/shrink-to-fit/style layout."""

from __future__ import annotations

import time

from app import widgets
from app.models import Frame, TextWidgetConfig, Widget


def _run(text, **overrides) -> dict:
    run = {"text": text, "bold": False, "italic": False, "underline": False, "color": None, "bg": None}
    run.update(overrides)
    return run


def _make_widget(db_session, **cfg_kwargs) -> tuple[Frame, Widget]:
    frame = db_session.get(Frame, 1)
    widget = Widget(frame_id=frame.id, widget_type="text", x=0, y=0, w=2, h=1,
                    sort_order=0, created_at=time.time())
    db_session.add(widget)
    db_session.flush()
    db_session.add(TextWidgetConfig(widget_id=widget.id, **cfg_kwargs))
    db_session.commit()
    return frame, widget


def test_render_shows_a_placeholder_when_never_configured(db_session):
    frame, widget = _make_widget(db_session)
    img = widgets.text.render(db_session, frame, widget, 300, 200)
    assert img.size == (300, 200)
    assert img.mode == "RGB"


def test_render_shows_a_placeholder_for_whitespace_only_content(db_session):
    frame, widget = _make_widget(db_session, content=[[_run("   ")]])
    img = widgets.text.render(db_session, frame, widget, 300, 200)
    assert img.size == (300, 200)


def test_render_draws_configured_text(db_session):
    frame, widget = _make_widget(db_session, content=[[_run("Hello world")]])
    img = widgets.text.render(db_session, frame, widget, 300, 200)
    assert img.size == (300, 200)
    assert img.mode == "RGB"
    # Not just a blank/placeholder canvas -- some non-background pixel exists.
    assert img.getcolors(maxcolors=1) is None or img.getcolors()[0][0] != 300 * 200


def test_render_respects_background_color(db_session):
    frame, widget = _make_widget(db_session, content=[[_run("hi")]], background_color="#ff0000")
    img = widgets.text.render(db_session, frame, widget, 50, 40)
    assert img.getpixel((0, 0)) == (255, 0, 0)


def test_render_shrinks_font_to_fit_a_tiny_box(db_session):
    long_text = " ".join(["word"] * 40)
    frame, widget = _make_widget(db_session, content=[[_run(long_text)]], font_size=96)
    # grid.MIN_FOOTPRINT["text"] is (2, 1) cells -- on an 8x5 grid against
    # a full 800x480 panel that's a 200x96 box, the smallest a text
    # widget can actually be placed at.
    img = widgets.text.render(db_session, frame, widget, 200, 96)
    assert img.size == (200, 96)


def test_render_wraps_across_multiple_paragraphs(db_session):
    content = [[_run("First paragraph with several words to wrap.")],
              [_run("Second paragraph, also with text.")]]
    frame, widget = _make_widget(db_session, content=content)
    img = widgets.text.render(db_session, frame, widget, 250, 150)
    assert img.size == (250, 150)


def test_render_applies_bold_italic_underline_color_and_highlight(db_session):
    content = [[
        _run("bold", bold=True),
        _run(" "),
        _run("italic", italic=True),
        _run(" "),
        _run("underline", underline=True),
        _run(" "),
        _run("colored", color="#cf000f"),
        _run(" "),
        _run("highlighted", bg="#ffdb00"),
    ]]
    frame, widget = _make_widget(db_session, content=content)
    img = widgets.text.render(db_session, frame, widget, 400, 150)
    assert img.size == (400, 150)


def test_render_respects_alignment(db_session):
    for align in ("left", "center", "right"):
        frame, widget = _make_widget(db_session, content=[[_run("hi")]], align=align)
        img = widgets.text.render(db_session, frame, widget, 200, 100)
        assert img.size == (200, 100)


def test_render_supports_every_font_family(db_session):
    for family in widgets.text.FONT_FAMILIES:
        frame, widget = _make_widget(db_session, content=[[_run("The quick brown fox")]], font_family=family)
        img = widgets.text.render(db_session, frame, widget, 250, 100)
        assert img.size == (250, 100)


def test_render_falls_back_to_default_family_for_an_unrecognized_value(db_session):
    """A stale/tampered font_family value (e.g. a family removed in a
    later release) never crashes render() -- falls back to the default
    the same way an unrecognized align/display_mode value does
    elsewhere in this codebase."""
    frame, widget = _make_widget(db_session, content=[[_run("hi")]], font_family="does-not-exist")
    img = widgets.text.render(db_session, frame, widget, 200, 100)
    assert img.size == (200, 100)


def test_no_button_actions():
    """Fixed authored text -- nothing to advance/back/check."""
    assert widgets.text.ACTIONS == {}
    assert widgets.text.ACTION_LABELS == {}
