// SPDX-License-Identifier: LGPL-2.1-or-later

#include <gtest/gtest.h>

#include "Base/Quantity.h"

#include "App/Application.h"
#include "App/Document.h"
#include "App/DocumentObject.h"
#include "App/Expression.h"
#include "App/ObjectIdentifier.h"
#include "App/PropertyExpressionEngine.h"

#include "src/App/InitApplication.h"

// clang-format off

class PropertyExpressionEngineTest: public ::testing::Test
{
protected:
    static void SetUpTestSuite()
    {
        tests::initApplication();
    }

    void SetUp() override
    {
        _doc_name = App::GetApplication().getUniqueDocumentName("test");
        _this_doc = App::GetApplication().newDocument(_doc_name.c_str(), "testUser");
        _this_obj = _this_doc -> addObject("Sketcher::SketchObject");
        _source_name = std::string("this_origin");
        _source_prop = _this_obj -> addDynamicProperty("App::PropertyString", _source_name.c_str()); // property with length as string
        _target_name = std::string("this_length");
        _target_prop = _this_obj -> addDynamicProperty("App::PropertyLength", _target_name.c_str()); // property with reference to source
    }

    void TearDown() override
    {
        App::GetApplication().closeDocument(_doc_name.c_str());
    }

    std::string doc_name() { return _doc_name; }
    App::Document* this_doc() { return _this_doc; }
    App::DocumentObject* this_obj() { return _this_obj; }
    std::string source_name() { return _source_name; }
    App::Property* source_prop() { return _source_prop; }
    std::string target_name() { return _target_name; }
    App::Property* target_prop() { return _target_prop; }

private:
    std::string _doc_name;
    App::Document* _this_doc {};
    App::DocumentObject* _this_obj {};
    std::string _source_name;
    App::Property* _source_prop {};
    std::string _target_name;
    App::Property* _target_prop {};
};

// https://github.com/FreeCAD/FreeCAD/issues/11965
TEST_F(PropertyExpressionEngineTest, executeCrossPropertyReference)
{
    auto source_text = std::string("1.5 m"); // provided in source
    auto target_text = std::string("1500 mm"); // expected in target

    auto source_path = App::ObjectIdentifier::parse(this_obj(), source_name());
    source_prop()->setPathValue(source_path, source_text);

    auto target_expr = "parsequant(" + source_name() + ")"; // Solution B: parsequant() function

    auto target_path = App::ObjectIdentifier::parse(this_obj(), target_name());
    std::shared_ptr<App::Expression> target_rule(App::Expression::parse(this_obj(), target_expr));
    this_obj()->setExpression(target_path, target_rule);

    this_obj() -> ExpressionEngine.execute();

    auto source_entry = source_prop() -> getPathValue(source_path);
    ASSERT_TRUE(source_entry.type() == typeid(std::string));
    auto source_value = App::any_cast<std::string>(source_entry);

    auto target_entry = target_prop() -> getPathValue(target_path);
    ASSERT_TRUE(target_entry.type() == typeid(Base::Quantity));
    auto target_quant = App::any_cast<Base::Quantity>(target_entry);
    auto target_value = target_quant.getValue();
    auto target_unit = target_quant.getUnit().getString();

    auto verify_quant = Base::Quantity::parse(target_text);

    EXPECT_EQ(target_quant, verify_quant) << ""
        "expecting equal: source_text='" + source_text + "' target_text='" + target_text + "'"
        "instead produced: target_value='" + std::to_string(target_value) + "' target_unit='" + target_unit + "'"
    ;
}

// clang-format on