// Copyright 2019 Michael Fisher <mfisher@lvtk.org>
// SPDX-License-Identifier: ISC

#include <boost/test/unit_test.hpp>

#include "lvtk/lvtk.hpp"
#include "lvtk/plugin.hpp"
#include "lvtk/symbols.hpp"

#include <lv2/core/lv2.h>
#include <lv2/urid/urid.h>

#include <cstdint>
#include <cstring>
#include <memory>
#include <string>
#include <vector>

#ifndef LVTK_VOLUME_URI
#    define LVTK_VOLUME_URI "https://lvtk.org/plugins/volume"
#endif

// dummy plugin with worker interface
struct PlugWithRequiredHostFeature : lvtk::Plugin<PlugWithRequiredHostFeature> {
    PlugWithRequiredHostFeature (const lvtk::Args& args) : Plugin (args) {}
};

class DescriptorTest {
public:
    void total_descriptors() {
        BOOST_REQUIRE_EQUAL ((size_t) 1, lvtk::descriptors().size());
        BOOST_REQUIRE_EQUAL (strcmp (lvtk::descriptors()[0].URI, LVTK_VOLUME_URI), (int) 0);
        // BOOST_REQUIRE_EQUAL (strcmp (lvtk::descriptors()[1].URI, LVTK_WORKHORSE_URI), (int)0);
    }

    void instantiation() {
        if (0 == lvtk::descriptors().size())
            return;

        const auto desc = lvtk::descriptors().front();
        BOOST_ASSERT (strcmp (LVTK_VOLUME_URI, desc.URI) == 0);

        const LV2_Feature* features[] = {
            urids.map_feature(),
            urids.unmap_feature(),
            nullptr
        };

        LV2_Handle handle = desc.instantiate (&desc, 44100.0, "/usr/local/lv2", features);
        BOOST_ASSERT (handle != nullptr);
        if (handle != nullptr) {
            desc.activate (handle);

            float control = 0.0f;
            float audio[4][64];

            for (uint32_t port = 0; port < 4; ++port)
                desc.connect_port (handle, port, audio[port]);
            desc.connect_port (handle, 4, &control);

            desc.run (handle, 64);
            desc.deactivate (handle);
            desc.cleanup (handle);
        }
    }

    void missing_host_feature() {
        lvtk::Descriptor<PlugWithRequiredHostFeature> reg ("http://fakeuri.com", { LV2_URID__map });
        const auto& desc              = lvtk::descriptors().back();
        const LV2_Feature* features[] = { nullptr };
        LV2_Handle handle             = desc.instantiate (&desc, 44100.0, "/usr/local/lv2", features);
        BOOST_ASSERT (handle == nullptr);
        if (handle && desc.cleanup)
            desc.cleanup (handle);
    }

private:
    lvtk::Symbols urids;
};

using namespace lvtk;

BOOST_AUTO_TEST_SUITE (Descriptor)

BOOST_AUTO_TEST_CASE (instantiate) {
    DescriptorTest().instantiation();
}

BOOST_AUTO_TEST_CASE (missing_host_feature) {
    DescriptorTest().missing_host_feature();
}

BOOST_AUTO_TEST_SUITE_END()