import colorama
import pytest
import os
import sys

sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
from slic.utils.rangebar import RangeBar


def test_full_progress_bar(capsys):
    with RangeBar(0, 100, width=10, units="kg", fmt=".0f") as bar:
        bar.show(100)

    captured = capsys.readouterr()
    lines = captured.out.strip("\r\n").split("\r")
    assert lines[0].startswith("[ 0 kg |")
    expected = (
        f"[ 0 kg |{colorama.Fore.GREEN}{'█' * 10}{colorama.Fore.RESET}| 100 kg ]   "
        f"{colorama.Style.BRIGHT}100 kg{colorama.Style.RESET_ALL}"
    )
    assert lines[-1] == expected


def test_half_progress_bar(capsys):
    with RangeBar(0, 100, width=10, units="kg", fmt=".0f") as bar:
        bar.show(50)

    expected_bar = f"{'█' * 5}{' ' * 5}"
    captured = capsys.readouterr()
    lines = captured.out.strip("\r\n").split("\r")
    assert lines[0].startswith("[ 0 kg |")
    expected = (
        f"[ 0 kg |{colorama.Fore.GREEN}{expected_bar}{colorama.Fore.RESET}| 100 kg ]   "
        f"{colorama.Style.BRIGHT}50 kg{colorama.Style.RESET_ALL}"
    )
    assert lines[-1] == expected


def test_zero_progress_bar(capsys):
    with RangeBar(0, 100, width=10, units="kg", fmt=".0f") as bar:
        bar.show(0)

    expected_bar = f"{' ' * 10}"  # not bloc at the start
    captured = capsys.readouterr()
    lines = captured.out.strip("\r\n").split("\r")
    assert lines[0].startswith("[ 0 kg |")
    expected = (
        f"[ 0 kg |{colorama.Fore.GREEN}{expected_bar}{colorama.Fore.RESET}| 100 kg ]   "
        f"{colorama.Style.BRIGHT}0 kg{colorama.Style.RESET_ALL}"
    )
    assert lines[-1] == expected


def test_overflow_bar(capsys):
    with RangeBar(0, 10, width=10, fmt=".0f", units="m") as bar:
        bar.show(15)

    captured = capsys.readouterr()
    lines = captured.out.strip("\r\n").split("\r")
    assert lines[0].startswith("[ 0 m |")
    expected = (
        f"[ 0 m |{colorama.Fore.RED}{'>' * 10}{colorama.Fore.RESET}| 10 m ]   "
        f"{colorama.Style.BRIGHT}15 m{colorama.Style.RESET_ALL}"
    )
    assert lines[-1] == expected


def test_underflow_bar(capsys):
    with RangeBar(0, 10, width=10, fmt=".0f", units="m") as bar:
        bar.show(-5)

    captured = capsys.readouterr()
    lines = captured.out.strip("\r\n").split("\r")
    assert lines[0].startswith("[ 0 m |")
    expected = (
        f"[ 0 m |{colorama.Fore.RED}{'<' * 10}{colorama.Fore.RESET}| 10 m ]   "
        f"{colorama.Style.BRIGHT}-5 m{colorama.Style.RESET_ALL}"
    )
    assert lines[-1] == expected


def test_repr():
    bar = RangeBar(0, 100, width=10, units="kg", fmt=".0f")
    expected = "[ 0 kg |10 blocks| 100 kg ]"
    assert repr(bar) == expected


@pytest.mark.parametrize("value, expected_bar_part", [
    (0, ' ' * 10),
    (10, '█' + ' ' * 9),
    (25, '██▌' + ' ' * 7),
    (27, '██▊' + ' ' * 7),
    (49, '████▉' + ' ' * 5),
    (50, '█' * 5 + ' ' * 5),
    (51, '█' * 5 + '▏' + ' ' * 4),
    (73, '█' * 7 + '▎' + ' ' * 2),
    (75, '█' * 7 + '▌' + ' ' * 2),
    (90, '█' * 9 + ' ' * 1),
    (100, '█' * 10)
])
def test_each_value_separately(capsys, value, expected_bar_part):
    with RangeBar(0, 100, width=10, units="kg", fmt=".0f") as bar:
        bar.show(value)

    captured = capsys.readouterr()
    result = captured.out.strip()
    expected = (
        f"[ 0 kg |{colorama.Fore.GREEN}{expected_bar_part}{colorama.Fore.RESET}| 100 kg ]   "
        f"{colorama.Style.BRIGHT}{value} kg{colorama.Style.RESET_ALL}"
    )

    assert expected in result, f"\nExpected: {expected}\nGot:      {result}"