"""Step implementations for graphical object (shape) related features."""

import hashlib

from behave import given, then, when

from docx import Document
from docx.enum.shape import WD_INLINE_SHAPE
from docx.shape import InlineShape
from docx.shared import Inches

from helpers import test_docx

# given ===================================================


@given("an inline shape collection containing five shapes")
def given_an_inline_shape_collection_containing_five_shapes(context):
    docx_path = test_docx("shp-inline-shape-access")
    document = Document(docx_path)
    context.inline_shapes = document.inline_shapes


@given("an inline shape of known dimensions")
def given_inline_shape_of_known_dimensions(context):
    document = Document(test_docx("shp-inline-shape-access"))
    context.inline_shape = document.inline_shapes[0]


@given("an inline shape known to be {shp_of_type}")
def given_inline_shape_known_to_be_shape_of_type(context, shp_of_type):
    inline_shape_idx = {
        "an embedded picture": 0,
        "a linked picture": 1,
        "a link+embed picture": 2,
        "a smart art diagram": 3,
        "a chart": 4,
    }[shp_of_type]
    docx_path = test_docx("shp-inline-shape-access")
    document = Document(docx_path)
    context.inline_shape = document.inline_shapes[inline_shape_idx]


# when =====================================================


@when("I change the dimensions of the inline shape")
def when_change_dimensions_of_inline_shape(context):
    inline_shape = context.inline_shape
    inline_shape.width = Inches(1)
    inline_shape.height = Inches(0.5)


# then =====================================================


@then("I can access each inline shape by index")
def then_can_access_each_inline_shape_by_index(context):
    inline_shapes = context.inline_shapes
    for idx in range(2):
        inline_shape = inline_shapes[idx]
        assert isinstance(inline_shape, InlineShape)


@then("I can iterate over the inline shape collection")
def then_can_iterate_over_inline_shape_collection(context):
    inline_shapes = context.inline_shapes
    shape_count = 0
    for inline_shape in inline_shapes:
        shape_count += 1
        assert isinstance(inline_shape, InlineShape)
    expected_count = 5
    assert shape_count == expected_count, "expected %d, got %d" % (
        expected_count,
        shape_count,
    )


@then("its inline shape type is {shape_type}")
def then_inline_shape_type_is_shape_type(context, shape_type):
    expected_value = {
        "WD_INLINE_SHAPE.CHART": WD_INLINE_SHAPE.CHART,
        "WD_INLINE_SHAPE.LINKED_PICTURE": WD_INLINE_SHAPE.LINKED_PICTURE,
        "WD_INLINE_SHAPE.PICTURE": WD_INLINE_SHAPE.PICTURE,
        "WD_INLINE_SHAPE.SMART_ART": WD_INLINE_SHAPE.SMART_ART,
    }[shape_type]
    inline_shape = context.inline_shape
    assert inline_shape.type == expected_value


@then("the dimensions of the inline shape match the known values")
def then_dimensions_of_inline_shape_match_known_values(context):
    inline_shape = context.inline_shape
    assert inline_shape.width == 1778000, "got %s" % inline_shape.width
    assert inline_shape.height == 711200, "got %s" % inline_shape.height


@then("the dimensions of the inline shape match the new values")
def then_dimensions_of_inline_shape_match_new_values(context):
    inline_shape = context.inline_shape
    assert inline_shape.width == 914400, "got %s" % inline_shape.width
    assert inline_shape.height == 457200, "got %s" % inline_shape.height


@then("the document contains the inline picture")
def then_the_document_contains_the_inline_picture(context):
    document = context.document
    picture_shape = document.inline_shapes[0]
    blip = picture_shape._inline.graphic.graphicData.pic.blipFill.blip
    rId = blip.embed
    image_part = document.part.related_parts[rId]
    image_sha1 = hashlib.sha1(image_part.blob).hexdigest()
    expected_sha1 = "79769f1e202add2e963158b532e36c2c0f76a70c"
    assert image_sha1 == expected_sha1, "image SHA1 doesn't match, expected %s, got %s" % (
        expected_sha1,
        image_sha1,
    )


@then("the length of the inline shape collection is 5")
def then_len_of_inline_shape_collection_is_5(context):
    inline_shapes = context.inline_shapes
    shape_count = len(inline_shapes)
    assert shape_count == 5, "got %s" % shape_count


@then("the picture has its native width and height")
def then_picture_has_native_width_and_height(context):
    picture = context.picture
    assert picture.width == 1905000, "got %d" % picture.width
    assert picture.height == 2717800, "got %d" % picture.height


@then("picture.height is {inches} inches")
def then_picture_height_is_value(context, inches):
    expected_value = {
        "2.14": 1956816,
        "2.5": 2286000,
    }[inches]
    picture = context.picture
    assert picture.height == expected_value, "got %d" % picture.height


@then("picture.width is {inches} inches")
def then_picture_width_is_value(context, inches):
    expected_value = {
        "1.05": 961402,
        "1.75": 1600200,
    }[inches]
    picture = context.picture
    assert picture.width == expected_value, "got %d" % picture.width