"""app.widgets.battery -- unit-level, no HTTP: constructs Widget/
BatteryWidgetConfig rows directly and sets Frame.battery_percent/
battery_as_of straight on the Frame row, same as routers/device.py's
frame_battery would."""

from __future__ import annotations

import time

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


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


def test_render_shows_a_placeholder_when_frame_has_never_reported(db_session):
    frame, widget = _make_widget(db_session)
    assert frame.battery_percent == -1
    img = widgets.battery.render(db_session, frame, widget, 300, 200)
    assert img.size == (300, 200)
    assert img.mode == "RGB"


def test_render_shows_the_reported_percent(db_session):
    frame, widget = _make_widget(db_session)
    frame.battery_percent = 42
    frame.battery_as_of = time.time()
    db_session.commit()
    img = widgets.battery.render(db_session, frame, widget, 300, 200)
    assert img.size == (300, 200)
    assert img.mode == "RGB"


def test_render_compact_mode_omits_the_estimate_lines(db_session):
    frame, widget = _make_widget(db_session, mode="compact")
    frame.battery_percent = 80
    frame.battery_as_of = time.time()
    db_session.commit()
    img = widgets.battery.render(db_session, frame, widget, 300, 200)
    assert img.size == (300, 200)


def test_render_at_minimum_grid_footprint(db_session):
    """grid.MIN_FOOTPRINT["battery"] is (1, 1) cells -- on an 8x5 grid
    against a full 800x480 panel that's a 100x96 box, the smallest a
    battery widget can actually be placed at."""
    frame, widget = _make_widget(db_session)
    frame.battery_percent = 15
    db_session.commit()
    img = widgets.battery.render(db_session, frame, widget, 100, 96)
    assert img.size == (100, 96)


def test_render_falls_back_to_detailed_mode_with_no_config_row(db_session):
    """widget_id has no BatteryWidgetConfig row at all -- render() must
    not raise, matching every other widget type's "never raises for a
    foreseeable failure" contract."""
    frame = db_session.get(Frame, 1)
    widget = Widget(frame_id=frame.id, widget_type="battery", x=0, y=0, w=1, h=1,
                    sort_order=0, created_at=time.time())
    db_session.add(widget)
    db_session.flush()
    db_session.commit()
    frame.battery_percent = 60
    db_session.commit()
    img = widgets.battery.render(db_session, frame, widget, 100, 96)
    assert img.size == (100, 96)


def test_no_button_actions():
    """A number the device itself pushes on every wake -- nothing to
    advance/back/check."""
    assert widgets.battery.ACTIONS == {}
    assert widgets.battery.ACTION_LABELS == {}