# Copyright (c) 2020, Manfred Moitzi
# License: MIT License

import pytest
import ezdxf
from ezdxf.addons.drawing.properties import RenderContext, is_valid_color
from ezdxf.addons.acadctb import ColorDependentPlotStyles
from ezdxf import colors
from ezdxf.entities import Layer, factory
from ezdxf.lldxf import const


@pytest.fixture(scope="module")
def doc():
    d = ezdxf.new(setup=True)
    d.layers.add("Test", color=5, linetype="DOT", lineweight=70)
    msp = d.modelspace()
    msp.add_line(
        (0, 0),
        (1, 0),
        dxfattribs={
            "color": 256,  # by layer
            "linetype": "BYLAYER",
            "lineweight": -1,  # by layer
            "layer": "Test",
        },
    )
    msp.add_line(
        (0, 0),
        (1, 0),
        dxfattribs={
            "color": 1,  # red: ff0000
            "linetype": "DASHED",
            "lineweight": 50,  # 0.50
            "layer": "Test",
        },
    )
    blk = d.blocks.new("MyBlock")
    blk.add_line(
        (0, 0),
        (1, 0),
        dxfattribs={
            "color": 0,  # by block
            "linetype": "BYBLOCK",
            "lineweight": -2,  # by block
            "layer": "Test",
        },
    )
    blk.add_line(
        (0, 0),
        (1, 0),
        dxfattribs={
            "color": 1,  # red: ff0000
            "linetype": "DASHED",
            "lineweight": 50,  # 0.50
            "layer": "Test",
        },
    )
    blk.add_line(
        (0, 0),
        (1, 0),
        dxfattribs={
            "color": 256,  # by layer
            "linetype": "BYLAYER",
            "lineweight": -1,  # by layer
            "layer": "Test",
        },
    )
    msp.add_blockref(
        "MyBlock",
        insert=(0, 0),
        dxfattribs={
            "color": 3,  # green: 00ff00
            "linetype": "CENTER",
            "lineweight": 13,  # 0.13
        },
    )
    return d


def test_load_default_ctb(doc):
    ctx = RenderContext(doc, ctb="color.ctb")
    assert bool(ctx.plot_styles) is True
    assert ctx.plot_styles[1].color == (255, 0, 0)


def test_set_color_dependent_plot_style_as_object_instance(doc):
    ctb = ColorDependentPlotStyles(description="my_style")
    ctb.new_style(1).color = (22, 33, 44)
    ctx = RenderContext(doc, ctb=ctb)
    assert bool(ctx.plot_styles) is True
    assert ctx.plot_styles[1].color == (22, 33, 44)


def test_new_ctb(doc):
    ctx = RenderContext(doc)
    assert bool(ctx.plot_styles) is True
    assert ctx.plot_styles[1].color == (255, 0, 0)


def test_resolve_entity_visibility():
    doc = ezdxf.new()
    layout = doc.modelspace()
    doc.layers.new(name="visible", dxfattribs={"color": 0})
    doc.layers.new(name="invisible", dxfattribs={"color": -1})  # color < 0 => invisible
    doc.layers.new(name="frozen", dxfattribs={"flags": Layer.FROZEN})  # also invisible
    doc.layers.new(
        name="noplot", dxfattribs={"plot": 0}
    )  # visible in the CAD application but not when exported

    for export_mode in (False, True):
        ctx = RenderContext(layout.doc, export_mode=export_mode)

        text = layout.add_text(
            "a", dxfattribs={"invisible": 0, "layer": "non_existent"}
        )
        assert ctx.resolve_visible(text) is True

        text = layout.add_text("a", dxfattribs={"invisible": 0, "layer": "visible"})
        assert ctx.resolve_visible(text) is True

        for layer in ["invisible", "frozen"]:
            text = layout.add_text("a", dxfattribs={"invisible": 0, "layer": layer})
            assert ctx.resolve_visible(text) is False

        for layer in [
            "non_existent",
            "visible",
            "invisible",
            "frozen",
            "noplot",
        ]:
            text = layout.add_text("a", dxfattribs={"invisible": 1, "layer": layer})
            assert ctx.resolve_visible(text) is False

    ctx = RenderContext(layout.doc, export_mode=False)
    text = layout.add_text("a", dxfattribs={"invisible": 0, "layer": "noplot"})
    assert ctx.resolve_visible(text) is True

    ctx = RenderContext(layout.doc, export_mode=True)
    text = layout.add_text("a", dxfattribs={"invisible": 0, "layer": "noplot"})
    assert ctx.resolve_visible(text) is False


def test_resolve_attrib_visibility():
    doc = ezdxf.new()
    layout = doc.modelspace()
    block = doc.blocks.new(name="block")
    doc.layers.new(name="invisible", dxfattribs={"color": -1})  # color < 0 => invisible

    block.add_attdef("att1", (0, 0), "", dxfattribs={})
    block.add_attdef("att2", (0, 0), "", dxfattribs={"flags": const.ATTRIB_INVISIBLE})
    block.add_attdef("att3", (0, 0), "", dxfattribs={"layer": "invisible"})

    i = layout.add_blockref("block", (0, 0))
    i.add_auto_attribs({"att1": "abc", "att2": "def", "att3": "hij"})

    assert not i.attribs[0].is_invisible
    assert i.attribs[1].is_invisible
    assert not i.attribs[2].is_invisible

    ctx = RenderContext(layout.doc)
    assert ctx.resolve_visible(i.attribs[0]) is True
    assert ctx.resolve_visible(i.attribs[1]) is False
    assert ctx.resolve_visible(i.attribs[2]) is False


def test_resolve_entity_color(doc):
    ctx = RenderContext(doc)
    msp = doc.modelspace()
    lines = msp.query("LINE")
    line1 = ctx.resolve_all(lines[0])
    assert line1.color == "#0000ff"  # by layer

    line2 = ctx.resolve_all(lines[1])
    assert line2.color == "#ff0000"


def test_existing_true_color_overrides_any_aci_color(doc):
    ctx = RenderContext(doc)
    line = factory.new("LINE")
    line.rgb = (255, 1, 1)
    for color in range(const.BYLAYER + 1):
        line.dxf.color = color
        props = ctx.resolve_all(line)
        assert props.color == "#ff0101", "true_color should override any ACI color"


def test_resolve_entity_linetype(doc):
    ctx = RenderContext(doc)
    msp = doc.modelspace()
    lines = msp.query("LINE")

    line1 = ctx.resolve_all(lines[0])
    assert line1.linetype_name == "DOT"  # by layer

    line2 = ctx.resolve_all(lines[1])
    assert line2.linetype_name == "DASHED"


def test_resolve_entity_lineweight(doc):
    ctx = RenderContext(doc)
    msp = doc.modelspace()
    lines = msp.query("LINE")

    line1 = ctx.resolve_all(lines[0])
    assert line1.lineweight == 0.70  # by layer

    line2 = ctx.resolve_all(lines[1])
    assert line2.lineweight == 0.50


def test_resolve_block_entities(doc):
    ctx = RenderContext(doc)
    msp = doc.modelspace()
    blockref = msp.query("INSERT").first
    ctx.push_state(ctx.resolve_all(blockref))
    assert ctx.inside_block_reference is True
    lines = list(blockref.virtual_entities())

    # properties by block
    line1 = ctx.resolve_all(lines[0])
    assert lines[0].dxf.linetype == "BYBLOCK"
    assert line1.color == "#00ff00"
    assert line1.linetype_name == "CENTER"
    assert line1.lineweight == 0.13

    # explicit properties
    line2 = ctx.resolve_all(lines[1])
    assert lines[1].dxf.linetype == "DASHED"
    assert line2.color == "#ff0000"
    assert line2.linetype_name == "DASHED"
    assert line2.lineweight == 0.50

    # properties by layer 'Test'
    line3 = ctx.resolve_all(lines[2])
    assert lines[2].dxf.linetype == "BYLAYER"
    assert line3.color == "#0000ff"
    assert line3.linetype_name == "DOT"
    assert line3.lineweight == 0.70

    ctx.pop_state()
    assert ctx.inside_block_reference is False


class TestResolveLayerACIColor7:
    @pytest.fixture
    def entity(self):
        # Default layer is '0' with default ACI color 7
        # Default entity color is BYLAYER
        return factory.new("LINE")

    @pytest.fixture(scope="class")
    def ctx(self):
        doc = ezdxf.new()
        doc.layers.new(
            "TrueColor",
            dxfattribs={"true_color": ezdxf.rgb2int((0xB0, 0xB0, 0xB0))},
        )
        context = RenderContext(doc)
        context.set_current_layout(doc.modelspace())
        return context

    def test_dark_background(self, ctx, entity):
        ctx.current_layout_properties.set_colors(bg="#000000")
        assert ctx.resolve_color(entity).upper() == "#FFFFFF"

    def test_light_background(self, ctx, entity):
        ctx.current_layout_properties.set_colors(bg="#FFFFFF")
        assert ctx.resolve_color(entity) == "#000000"

    def test_switch_layout_colors(self, ctx, entity):
        ctx.current_layout_properties.set_colors(bg="#FFFFFF", fg="#A0A0A0")
        assert ctx.resolve_color(entity) == "#A0A0A0"
        ctx.current_layout_properties.set_colors(bg="#EEEEEE", fg="#010101")
        assert ctx.resolve_color(entity) == "#010101"

    def test_color_from_true_color_layer(self, ctx, entity):
        entity.dxf.layer = "TrueColor"
        assert ctx.resolve_color(entity).upper() == "#B0B0B0"

        # Entity ACI color is BYLAYER by default:
        assert entity.dxf.color == const.BYLAYER

        ctx.current_layout_properties.set_colors(bg="#EEEEEE", fg="#010101")
        # But has no meaning if true color is set:
        assert ctx.resolve_color(entity).upper() == "#B0B0B0"


@pytest.mark.parametrize(
    "color, result",
    [
        ("#012345", True),
        ("#456789", True),
        ("#ABCDEF", True),
        ("#abcdef", True),
        ("#ghijkl", False),
        ("000000", False),
        ("ABCDEF", False),
    ],
)
def test_is_valid_color(color, result):
    assert is_valid_color(color) is result


@pytest.mark.parametrize("color", [0, 1.0, (1, 2, 3)])
def test_invalid_color_value_type(color):
    with pytest.raises(TypeError):
        is_valid_color(color)


@pytest.mark.parametrize(
    "color, result",
    [
        ("#00000000", True),
        ("#000000FF", True),
        ("#000000ff", True),
        ("#000000gh", False),
    ],
)
def test_is_valid_transparent_color(color, result):
    assert is_valid_color(color) is result


@pytest.mark.parametrize(
    "color, result",
    [
        ("", False),
        ("#", False),
        ("#0", False),
        ("#00", False),
        ("#000", False),
        ("#0000", False),
        ("#00000", False),
        ("#000000", True),  # RGB color format
        ("#0000000", False),
        ("#00000000", True),  # RGB color format including alpha transparency
        ("#000000000", False),
        ("  #0000", False),
        ("  #000000", False),
    ],
)
def test_is_valid_color_value_length(color, result):
    assert is_valid_color(color) is result


def test_resolve_transparency_from_layer():
    doc = ezdxf.new()
    doc.layers.add("Layer_T50", color=1, transparency=0.50)
    msp = doc.modelspace()
    line = msp.add_line(
        (0, 0),
        (1, 0),
        dxfattribs={
            "color": 5,
            "layer": "Layer_T50",
        },
    )
    context = RenderContext(doc)
    context.set_current_layout(msp)
    prop = context.resolve_all(line)
    assert prop.color == "#0000ff7f"


if __name__ == "__main__":
    pytest.main([__file__])