"""Visible geometry and evidence boundaries of the terminal volume plot."""
from fenris.activity_plot import VolumePoint, volume_plot
from fenris.themes import get_graph_colors


def plot(points, selected=-1, width=48, height=10):
    return volume_plot(points, width, height, selected, get_graph_colors("chalktone"))


def test_trace_fits_viewport_and_uses_time_not_sample_index():
    points = [VolumePoint(t, v, str(t)) for t, v in ((0, 0), (3, 50), (30, 100))]
    text, columns, unit = plot(points)
    assert unit == "B"
    assert len(text.plain.splitlines()) == 10
    assert all(len(line) <= 48 for line in text.plain.splitlines())
    assert columns[1] - columns[0] < (columns[2] - columns[0]) / 5
    assert any(0x2801 <= ord(c) <= 0x28ff for c in text.plain)
    assert not any(c in text.plain for c in "█▒░")
    assert "100.00" in text.plain and "0.00" in text.plain


def test_gap_breaks_trace_while_measured_zero_stays_on_axis():
    text, columns, _ = plot([
        VolumePoint(0, 0, "00:00"), VolumePoint(1, None, "00:03", "gap"),
        VolumePoint(2, 100, "00:06"),
    ])
    rows = text.plain.splitlines()
    assert "?" in rows[-2]
    # No invented intermediate dots on either side of the missing measurement.
    for row in rows[:-2]:
        assert all(c == " " for c in row[columns[0] + 1:columns[-1]])
    assert 0x2801 <= ord(rows[-3][columns[0]]) <= 0x28ff


def test_partial_and_unallocated_totals_are_isolated_and_labelled():
    text, columns, unit = plot([
        VolumePoint(0, 1_000_000, "01", "partial"),
        VolumePoint(1, 2_000_000, "02", "unallocated"),
        VolumePoint(2, 3_000_000, "03"),
    ])
    assert unit == "MB"
    assert "~" in text.plain and "u" in text.plain
    for row in text.plain.splitlines()[:-2]:
        assert all(c == " " for c in row[columns[0] + 1:columns[1]])


def test_many_intervals_and_selection_fit_small_plot_without_losing_points():
    points = [VolumePoint(i, i % 9 * 1_000_000, str(i)) for i in range(180)]
    text, columns, _ = plot(points, selected=100, width=32, height=6)
    assert len(columns) == len(points)
    assert text.plain.splitlines()[-2][columns[100]] == "▼"
    assert all(len(row) == 32 for row in text.plain.splitlines())