#include <iostream>
#include "SkData.h"
#include "SkTypeface.h"
#include "common.h"


SKIKO_EXPORT KInt org_jetbrains_skia_Typeface__1nGetFontStyle
  (KNativePointer ptr) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>((ptr));
    return skija::FontStyle::toKotlin(instance->fontStyle());
}


SKIKO_EXPORT KBoolean org_jetbrains_skia_Typeface__1nIsFixedPitch
  (KNativePointer ptr) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>((ptr));
    return instance->isFixedPitch();
}

SKIKO_EXPORT KInt org_jetbrains_skia_Typeface__1nGetVariationsCount
  (KNativePointer ptr) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>(ptr);
    return instance->getVariationDesignPosition({});
}

SKIKO_EXPORT void org_jetbrains_skia_Typeface__1nGetVariations
  (KNativePointer ptr, KInt* res, KInt count) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>(ptr);
    if (count > 0) {
        std::vector<SkFontArguments::VariationPosition::Coordinate> coords(count);
        instance->getVariationDesignPosition({coords.data(), count});
        for (int i=0; i < count; ++i) {
             res[2*i] = static_cast<KInt>(coords[i].axis);
             res[2*i + 1] = rawBits(coords[i].value);
        }
    }
}

SKIKO_EXPORT KInt org_jetbrains_skia_Typeface__1nGetVariationAxesCount
  (KNativePointer ptr) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>(ptr);
    return instance->getVariationDesignParameters({});
}


SKIKO_EXPORT void org_jetbrains_skia_Typeface__1nGetVariationAxes
  (KNativePointer ptr, int* axis, int count) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>(ptr);
    if (count > 0) {
        std::vector<SkFontParameters::Variation::Axis> params(count);
        instance->getVariationDesignParameters({params.data(), count});
        for (int i = 0,  j = 0; i < count; ++i) {
            int p[5] = { static_cast<int>(params[i].tag), rawBits(params[i].min), rawBits(params[i].def), rawBits(params[i].max), params[i].isHidden()};
            memcpy(axis + 5 * i, p, sizeof p);

        }
    }
}

SKIKO_EXPORT KInt org_jetbrains_skia_Typeface__1nGetUniqueId
  (KNativePointer ptr) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>((ptr));
    return instance->uniqueID();
}

SKIKO_EXPORT KInt org_jetbrains_skia_Typeface__1nEquals
  (KNativePointer ptr, KNativePointer otherPtr) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>((ptr));
    SkTypeface* other = reinterpret_cast<SkTypeface*>((otherPtr));
    return SkTypeface::Equal(instance, other);
}

SKIKO_EXPORT KNativePointer org_jetbrains_skia_Typeface__1nMakeClone
  (KNativePointer typefacePtr, KInt* variations, KInt variationsCount, KInt collectionIndex) {
    SkTypeface* typeface = reinterpret_cast<SkTypeface*>(typefacePtr);
    std::vector<SkFontArguments::VariationPosition::Coordinate> coordinates(variationsCount);
    for (int i=0; i < variationsCount; i+=2) {
        coordinates[i] = {
            static_cast<SkFourByteTag>(variations[i]),
            fromBits(variations[i+1])
        };
    }
    SkFontArguments arg = SkFontArguments()
                            .setCollectionIndex(collectionIndex)
                            .setVariationDesignPosition({coordinates.data(), variationsCount});
    SkTypeface* clone = typeface->makeClone(arg).release();
    return reinterpret_cast<KNativePointer>(clone);
}

SKIKO_EXPORT void org_jetbrains_skia_Typeface__1nGetUTF32Glyphs
  (KNativePointer ptr, KInt* uni, KInt count, KShort* res) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>(ptr);
    instance->unicharsToGlyphs({reinterpret_cast<SkUnichar*>(uni), count}, {reinterpret_cast<SkGlyphID*>(res), count});
}

SKIKO_EXPORT KShort org_jetbrains_skia_Typeface__1nGetUTF32Glyph
  (KNativePointer ptr, KInt uni) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>((ptr));
    return instance->unicharToGlyph(uni);
}

SKIKO_EXPORT KInt org_jetbrains_skia_Typeface__1nGetGlyphsCount
  (KNativePointer ptr) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>((ptr));
    return instance->countGlyphs();
}

SKIKO_EXPORT KInt org_jetbrains_skia_Typeface__1nGetTablesCount
  (KNativePointer ptr) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>((ptr));
    return instance->countTables();
}

SKIKO_EXPORT KInt org_jetbrains_skia_Typeface__1nGetTableTagsCount
  (KNativePointer ptr) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>(ptr);
    return instance->countTables();
}

SKIKO_EXPORT void org_jetbrains_skia_Typeface__1nGetTableTags
  (KNativePointer ptr, KInt* res, KInt count) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>(ptr);
    std::vector<SkFontTableTag> tags(count);
    int actualCount = instance->readTableTags({tags.data(), count});
    memcpy(res, tags.data(), actualCount * sizeof(KInt));
}

SKIKO_EXPORT KInt org_jetbrains_skia_Typeface__1nGetTableSize
  (KNativePointer ptr, KInt tag) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>((ptr));
    return instance->getTableSize(tag);
}

SKIKO_EXPORT KNativePointer org_jetbrains_skia_Typeface__1nGetTableData
  (KNativePointer ptr, KInt tag) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>((ptr));
    SkData* data = instance->copyTableData(tag).release();
    return reinterpret_cast<KNativePointer>(data);
}

SKIKO_EXPORT KInt org_jetbrains_skia_Typeface__1nGetUnitsPerEm
  (KNativePointer ptr) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>((ptr));
    return instance->getUnitsPerEm();
}


SKIKO_EXPORT bool org_jetbrains_skia_Typeface__1nGetKerningPairAdjustments
  (KNativePointer ptr, KInteropPointer glyphs, KInt count, KInt* res) {
  SkTypeface* instance = reinterpret_cast<SkTypeface*>(ptr);
  if (count > 0) {
      return instance->getKerningPairAdjustments(
        {reinterpret_cast<SkGlyphID*>(glyphs), count},
        {reinterpret_cast<int32_t*>(res), count}
      );
  }

  return false;
}

SKIKO_EXPORT KInteropPointer org_jetbrains_skia_Typeface__1nGetFamilyNames
  (KNativePointer ptr) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>(ptr);
    SkTypeface::LocalizedStrings* iter = instance->createFamilyNameIterator();
    std::vector<SkTypeface::LocalizedString> names;
    SkTypeface::LocalizedString name;
    std::vector<KInteropPointer>* res = new std::vector<KInteropPointer>();

    while (iter->next(&name)) {
        res->push_back(reinterpret_cast<KInteropPointer>(new SkString(name.fString)));
        res->push_back(reinterpret_cast<KInteropPointer>(new SkString(name.fLanguage)));
    }

    return reinterpret_cast<KInteropPointer>(res);
}

SKIKO_EXPORT KInteropPointer org_jetbrains_skia_Typeface__1nGetFamilyName
  (KNativePointer ptr) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>(ptr);
    SkString name;
    instance->getFamilyName(&name);
    return new SkString(name);
}

SKIKO_EXPORT void org_jetbrains_skia_Typeface__1nGetBounds
  (KNativePointer ptr, KFloat* bounds) {
    SkTypeface* instance = reinterpret_cast<SkTypeface*>(ptr);
    SkRect b = instance->getBounds();
    bounds[0] = b.left();
    bounds[1] = b.top();
    bounds[2] = b.right();
    bounds[3] = b.bottom();
}

SKIKO_EXPORT KInteropPointer org_jetbrains_skia_Typeface__1nMakeEmptyTypeface
  () {

    SkTypeface* res = SkTypeface::MakeEmpty().release();
    return reinterpret_cast<KInteropPointer>(res);
}