/*

 * Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>

 *

 * SPDX-License-Identifier: BSD-2-Clause

 */

#include <LibWeb/Bindings/Intrinsics.h>

#include <LibWeb/Bindings/SVGLineElementPrototype.h>

#include <LibWeb/SVG/AttributeNames.h>

#include <LibWeb/SVG/AttributeParser.h>

#include <LibWeb/SVG/SVGLineElement.h>

namespace Web::SVG {

JS_DEFINE_ALLOCATOR(SVGLineElement);

SVGLineElement::SVGLineElement(DOM::Document& document, DOM::QualifiedName qualified_name)

    : SVGGeometryElement(document, qualified_name)

{

}

void SVGLineElement::initialize(JS::Realm& realm)

{

    Base::initialize(realm);

    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGLineElement);

}

void SVGLineElement::attribute_changed(FlyString const& name, Optional<String> const& old_value, Optional<String> const& value)

{

    SVGGeometryElement::attribute_changed(name, old_value, value);

    if (name == SVG::AttributeNames::x1) {

        m_x1 = AttributeParser::parse_number_percentage(value.value_or(String {}));

    } else if (name == SVG::AttributeNames::y1) {

        m_y1 = AttributeParser::parse_number_percentage(value.value_or(String {}));

    } else if (name == SVG::AttributeNames::x2) {

        m_x2 = AttributeParser::parse_number_percentage(value.value_or(String {}));

    } else if (name == SVG::AttributeNames::y2) {

        m_y2 = AttributeParser::parse_number_percentage(value.value_or(String {}));

    }

}

Gfx::Path SVGLineElement::get_path(CSSPixelSize viewport_size)

{

    auto const viewport_width = viewport_size.width().to_float();

    auto const viewport_height = viewport_size.height().to_float();

    Gfx::Path path;

    float const x1 = m_x1.value_or({ 0, false }).resolve_relative_to(viewport_width);

    float const y1 = m_y1.value_or({ 0, false }).resolve_relative_to(viewport_height);

    float const x2 = m_x2.value_or({ 0, false }).resolve_relative_to(viewport_width);

    float const y2 = m_y2.value_or({ 0, false }).resolve_relative_to(viewport_height);

    // 1. perform an absolute moveto operation to absolute location (x1,y1)

    path.move_to({ x1, y1 });

    // 2. perform an absolute lineto operation to absolute location (x2,y2)

    path.line_to({ x2, y2 });

    return path;

}

// https://www.w3.org/TR/SVG11/shapes.html#LineElementX1Attribute

JS::NonnullGCPtr<SVGAnimatedLength> SVGLineElement::x1() const

{

    // FIXME: Populate the unit type when it is parsed (0 here is "unknown").

    // FIXME: Create a proper animated value when animations are supported.

    auto base_length = SVGLength::create(realm(), 0, m_x1.value_or({ 0, false }).value());

    auto anim_length = SVGLength::create(realm(), 0, m_x1.value_or({ 0, false }).value());

    return SVGAnimatedLength::create(realm(), move(base_length), move(anim_length));

}

// https://www.w3.org/TR/SVG11/shapes.html#LineElementY1Attribute

JS::NonnullGCPtr<SVGAnimatedLength> SVGLineElement::y1() const

{

    // FIXME: Populate the unit type when it is parsed (0 here is "unknown").

    // FIXME: Create a proper animated value when animations are supported.

    auto base_length = SVGLength::create(realm(), 0, m_y1.value_or({ 0, false }).value());

    auto anim_length = SVGLength::create(realm(), 0, m_y1.value_or({ 0, false }).value());

    return SVGAnimatedLength::create(realm(), move(base_length), move(anim_length));

}

// https://www.w3.org/TR/SVG11/shapes.html#LineElementX2Attribute

JS::NonnullGCPtr<SVGAnimatedLength> SVGLineElement::x2() const

{

    // FIXME: Populate the unit type when it is parsed (0 here is "unknown").

    // FIXME: Create a proper animated value when animations are supported.

    auto base_length = SVGLength::create(realm(), 0, m_x2.value_or({ 0, false }).value());

    auto anim_length = SVGLength::create(realm(), 0, m_x2.value_or({ 0, false }).value());

    return SVGAnimatedLength::create(realm(), move(base_length), move(anim_length));

}

// https://www.w3.org/TR/SVG11/shapes.html#LineElementY2Attribute

JS::NonnullGCPtr<SVGAnimatedLength> SVGLineElement::y2() const

{

    // FIXME: Populate the unit type when it is parsed (0 here is "unknown").

    // FIXME: Create a proper animated value when animations are supported.

    auto base_length = SVGLength::create(realm(), 0, m_y2.value_or({ 0, false }).value());

    auto anim_length = SVGLength::create(realm(), 0, m_y2.value_or({ 0, false }).value());

    return SVGAnimatedLength::create(realm(), move(base_length), move(anim_length));

}

}