/*
 * Copyright 2011 Google Inc.
 * Copyright 2022 Rive
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include "gm.hpp"
#include "gmutils.hpp"
#include "rive/renderer.hpp"
#include "rive/math/vec2d.hpp"
#include "rive/math/math_types.hpp"

using namespace rivegm;
using namespace rive;

namespace
{
struct PathDY
{
  Path path;
  float dy;
};
} // namespace

typedef PathDY (*MakePathProc)();

static PathDY make_triangle()
{
  constexpr int gCoord[] = {10, 20, 15, 5, 30, 30};
  return {
      PathBuilder()
          .moveTo(
              static_cast<float>(gCoord[0] + 10),
              static_cast<float>(gCoord[1]))
          .lineTo(
              static_cast<float>(gCoord[2] + 10),
              static_cast<float>(gCoord[3]))
          .lineTo(
              static_cast<float>(gCoord[4] + 10),
              static_cast<float>(gCoord[5]))
          .close()
          .detach(),
      30};
}

static PathDY make_rect()
{
  AABB r = {
      static_cast<float>(10 + 10),
      static_cast<float>(10),
      static_cast<float>(30 + 10),
      static_cast<float>(30)};
  return {PathBuilder().addRect(r).detach(), 30};
}

static PathDY make_oval()
{
  AABB r = {
      static_cast<float>(10 + 20),
      static_cast<float>(10),
      static_cast<float>(30 + 20),
      static_cast<float>(30)};
  return {PathBuilder().addOval(r).detach(), 30};
}

static PathDY make_sawtooth(int teeth)
{
  float x = static_cast<float>(20);
  float y = static_cast<float>(20);
  const float x0 = x;
  const float dx = static_cast<float>(5);
  const float dy = static_cast<float>(10);

  PathBuilder builder;
  builder.moveTo(x, y);
  for (int i = 0; i < teeth; i++)
  {
    x += dx;
    builder.lineTo(x, y - dy);
    x += dx;
    builder.lineTo(x, y + dy);
  }
  builder.lineTo(x, y + (2 * dy));
  builder.lineTo(x0, y + (2 * dy));
  builder.close();

  return {builder.detach(), 30};
}

static PathDY make_sawtooth_3() { return make_sawtooth(3); }
static PathDY make_sawtooth_32() { return make_sawtooth(32); }

static PathDY make_house()
{
  PathBuilder builder;
  builder
      .addPolygon(
          {{20 + 21, 23},
           {20 + 21, 11.534f},
           {20 + 22.327f, 12.741f},
           {20 + 23.673f, 11.261f},
           {20 + 12, 0.648f},
           {20 + 8, 4.285f},
           {20 + 8, 2},
           {20 + 4, 2},
           {20 + 4, 7.921f},
           {20 + 0.327f, 11.26f},
           {20 + 1.673f, 12.74f},
           {20 + 3, 11.534f},
           {20 + 3, 23},
           {20 + 11, 23},
           {20 + 11, 18},
           {20 + 13, 18},
           {20 + 13, 23},
           {20 + 21, 23}},
          true)
      .polylineTo(
          {{20 + 9, 16},
           {20 + 9, 21},
           {20 + 5, 21},
           {20 + 5, 9.715f},
           {20 + 12, 3.351f},
           {20 + 19, 9.715f},
           {20 + 19, 21},
           {20 + 15, 21},
           {20 + 15, 16},
           {20 + 9, 16}})
      .close();
  return {builder.detach(), 30};
}

static PathDY make_star(int n)
{
  const float c = static_cast<float>(45);
  const float r = static_cast<float>(20);

  float rad = -rive::math::PI / 2;
  const float drad = (n >> 1) * rive::math::PI * 2 / n;

  PathBuilder builder;
  builder.moveTo(c, c - r);
  for (int i = 1; i < n; i++)
  {
    rad += drad;
    builder.lineTo(c + cosf(rad) * r, c + sinf(rad) * r);
  }
  builder.close();

  return {builder.detach(), r * 2 * 6 / 5};
}

static PathDY make_star_5() { return make_star(5); }
static PathDY make_star_13() { return make_star(13); }

// We don't expect any output from this path.
static PathDY make_line()
{
  return {
      PathBuilder()
          .moveTo(30, 30)
          .lineTo(120, 40)
          .close()
          .moveTo(150, 30)
          .lineTo(150, 30)
          .lineTo(300, 40)
          .close()
          .detach(),
      40};
}

static Path make_info()
{
  PathBuilder path;
  path.moveTo(24, 4);
  path.cubicTo(12.94999980926514f, 4, 4, 12.94999980926514f, 4, 24);
  path.cubicTo(4, 35.04999923706055f, 12.94999980926514f, 44, 24, 44);
  path.cubicTo(35.04999923706055f, 44, 44, 35.04999923706055f, 44, 24);
  path.cubicTo(44, 12.95000076293945f, 35.04999923706055f, 4, 24, 4);
  path.close();
  path.moveTo(26, 34);
  path.lineTo(22, 34);
  path.lineTo(22, 22);
  path.lineTo(26, 22);
  path.lineTo(26, 34);
  path.close();
  path.moveTo(26, 18);
  path.lineTo(22, 18);
  path.lineTo(22, 14);
  path.lineTo(26, 14);
  path.lineTo(26, 18);
  path.close();
  return path.detach();
}

static Path make_accessibility()
{
  PathBuilder path;
  path.moveTo(12, 2);
  path.cubicTo(13.10000038146973f, 2, 14, 2.900000095367432f, 14, 4);
  path.cubicTo(14, 5.099999904632568f, 13.10000038146973f, 6, 12, 6);
  path.cubicTo(10.89999961853027f, 6, 10, 5.099999904632568f, 10, 4);
  path.cubicTo(10, 2.900000095367432f, 10.89999961853027f, 2, 12, 2);
  path.close();
  path.moveTo(21, 9);
  path.lineTo(15, 9);
  path.lineTo(15, 22);
  path.lineTo(13, 22);
  path.lineTo(13, 16);
  path.lineTo(11, 16);
  path.lineTo(11, 22);
  path.lineTo(9, 22);
  path.lineTo(9, 9);
  path.lineTo(3, 9);
  path.lineTo(3, 7);
  path.lineTo(21, 7);
  path.lineTo(21, 9);
  path.close();
  return path.detach();
}

// test case for http://crbug.com/695196
static Path make_visualizer()
{
  PathBuilder path;
  path.moveTo(1.9520f, 2.0000f);
  path.quadTo(1.5573f, 1.9992f, 1.2782f, 2.2782f);
  path.quadTo(0.9992f, 2.5573f, 1.0000f, 2.9520f);
  path.lineTo(1.0000f, 5.4300f);
  path.lineTo(17.0000f, 5.4300f);
  path.lineTo(17.0000f, 2.9520f);
  path.quadTo(17.0008f, 2.5573f, 16.7218f, 2.2782f);
  path.quadTo(16.4427f, 1.9992f, 16.0480f, 2.0000f);
  path.lineTo(1.9520f, 2.0000f);
  path.close();
  path.moveTo(2.7140f, 3.1430f);
  path.quadTo(3.0547f, 3.1287f, 3.2292f, 3.4216f);
  path.quadTo(3.4038f, 3.7145f, 3.2292f, 4.0074f);
  path.quadTo(3.0547f, 4.3003f, 2.7140f, 4.2860f);
  path.quadTo(2.1659f, 4.2631f, 2.1659f, 3.7145f);
  path.quadTo(2.1659f, 3.1659f, 2.7140f, 3.1430f);
  path.lineTo(2.7140f, 3.1430f);
  path.close();
  path.moveTo(5.0000f, 3.1430f);
  path.quadTo(5.3407f, 3.1287f, 5.5152f, 3.4216f);
  path.quadTo(5.6898f, 3.7145f, 5.5152f, 4.0074f);
  path.quadTo(5.3407f, 4.3003f, 5.0000f, 4.2860f);
  path.quadTo(4.4519f, 4.2631f, 4.4519f, 3.7145f);
  path.quadTo(4.4519f, 3.1659f, 5.0000f, 3.1430f);
  path.lineTo(5.0000f, 3.1430f);
  path.close();
  path.moveTo(7.2860f, 3.1430f);
  path.quadTo(7.6267f, 3.1287f, 7.8012f, 3.4216f);
  path.quadTo(7.9758f, 3.7145f, 7.8012f, 4.0074f);
  path.quadTo(7.6267f, 4.3003f, 7.2860f, 4.2860f);
  path.quadTo(6.7379f, 4.2631f, 6.7379f, 3.7145f);
  path.quadTo(6.7379f, 3.1659f, 7.2860f, 3.1430f);
  path.close();
  path.moveTo(1.0000f, 6.1900f);
  path.lineTo(1.0000f, 14.3810f);
  path.quadTo(0.9992f, 14.7757f, 1.2782f, 15.0548f);
  path.quadTo(1.5573f, 15.3338f, 1.9520f, 15.3330f);
  path.lineTo(16.0480f, 15.3330f);
  path.quadTo(16.4427f, 15.3338f, 16.7218f, 15.0548f);
  path.quadTo(17.0008f, 14.7757f, 17.0000f, 14.3810f);
  path.lineTo(17.0000f, 6.1910f);
  path.lineTo(1.0000f, 6.1910f);
  path.lineTo(1.0000f, 6.1900f);
  path.close();
  return path.detach();
}

constexpr MakePathProc gProcs[] = {
    make_triangle,
    make_rect,
    make_oval,
    make_sawtooth_32,
    make_star_5,
    make_star_13,
    make_line,
    make_house,
    make_sawtooth_3,
};

#define N std::size(gProcs)

class PathFillGM : public GM
{
public:
  PathFillGM() : GM(365, 425) {}

private:
  Path fPath[N];
  float fDY[N];
  Path fInfoPath;
  Path fAccessibilityPath;
  Path fVisualizerPath;

protected:
  void onOnceBeforeDraw() override
  {
    for (size_t i = 0; i < N; i++)
    {
      auto [path, dy] = gProcs[i]();
      fPath[i] = std::move(path);
      fDY[i] = dy;
    }

    fInfoPath = make_info();
    fAccessibilityPath = make_accessibility();
    fVisualizerPath = make_visualizer();
  }

  void onDraw(Renderer* canvas) override
  {
    Paint paint;

    for (size_t i = 0; i < N; i++)
    {
      canvas->drawPath(fPath[i], paint);
      canvas->translate(static_cast<float>(0), fDY[i]);
    }

    canvas->save();
    canvas->scale(0.300000011920929f, 0.300000011920929f);
    canvas->translate(50, 50);
    canvas->drawPath(fInfoPath, paint);
    canvas->restore();

    canvas->scale(2, 2);
    canvas->translate(5, 15);
    canvas->drawPath(fAccessibilityPath, paint);

    canvas->scale(0.5f, 0.5f);
    canvas->translate(5, 50);
    canvas->drawPath(fVisualizerPath, paint);
  }
};

DEF_SIMPLE_GM(rotatedcubicpath, 100, 100, canvas)
{
  Paint p;
  p->style(RenderPaintStyle::fill);

  canvas->translate(20, 40);
  Path path;
  path->moveTo(48, -23);
  path->cubicTo(48, -29.5, 6, -30, 6, -30);
  path->cubicTo(6, -30, 2, 0, 2, 0);
  path->cubicTo(2, 0, 44, -21.5, 48, -23);
  path->close();

  p->color(0xff0000ff);
  canvas->drawPath(path, p);

  // Rotated path, which is not antialiased on GPU
  p->color(0xffff0000);
  canvas->rotate(90);
  canvas->drawPath(path, p);
}

///////////////////////////////////////////////////////////////////////////////

GMREGISTER(pathfill, return new PathFillGM;)

DEF_SIMPLE_GM(bug7792, 800, 800, canvas)
{
  // from skbug.com/7792 bug description
  Paint p;
  Path path;
  path->moveTo(10, 10);
  path->moveTo(75, 75);
  path->lineTo(150, 75);
  path->lineTo(150, 150);
  path->lineTo(75, 150);
  canvas->drawPath(path, p);
  // from skbug.com/7792#c3
  canvas->translate(200, 0);
  path = Path();
  path->moveTo(75, 50);
  path->moveTo(100, 75);
  path->lineTo(150, 75);
  path->lineTo(150, 150);
  path->lineTo(75, 150);
  path->lineTo(75, 50);
  path->close();
  canvas->drawPath(path, p);
  // from skbug.com/7792#c9
  canvas->translate(200, 0);
  path = Path();
  path->moveTo(10, 10);
  path->moveTo(75, 75);
  path->lineTo(150, 75);
  path->lineTo(150, 150);
  path->lineTo(75, 150);
  path->close();
  canvas->drawPath(path, p);
  // from skbug.com/7792#c11
  canvas->translate(-200 * 2, 200);
  path = Path();
  path->moveTo(75, 150);
  path->lineTo(75, 75);
  path->lineTo(150, 75);
  path->lineTo(150, 150);
  path->lineTo(75, 150);
  path->moveTo(75, 150);
  canvas->drawPath(path, p);
  // from skbug.com/7792#c14
  canvas->translate(200, 0);
  path = Path();
  path->moveTo(250, 75);
  path->moveTo(250, 75);
  path->moveTo(250, 75);
  path->moveTo(100, 75);
  path->lineTo(150, 75);
  path->lineTo(150, 150);
  path->lineTo(75, 150);
  path->lineTo(75, 75);
  path->close();
  path->lineTo(0, 0);
  path->close();
  canvas->drawPath(path, p);
  // from skbug.com/7792#c15
  canvas->translate(200, 0);
  path = Path();
  path->moveTo(75, 75);
  path->lineTo(150, 75);
  path->lineTo(150, 150);
  path->lineTo(75, 150);
  path->moveTo(250, 75);
  canvas->drawPath(path, p);
  // from skbug.com/7792#c17
  canvas->translate(-200 * 2, 200);
  path = Path();
  path->moveTo(75, 10);
  path->moveTo(75, 75);
  path->lineTo(150, 75);
  path->lineTo(150, 150);
  path->lineTo(75, 150);
  path->lineTo(75, 10);
  path->close();
  canvas->drawPath(path, p);
  // from skbug.com/7792#c19
  canvas->translate(200, 0);
  path = Path();
  path->moveTo(75, 75);
  path->lineTo(75, 75);
  path->lineTo(75, 75);
  path->lineTo(75, 75);
  path->lineTo(150, 75);
  path->lineTo(150, 150);
  path->lineTo(75, 150);
  path->close();
  path->moveTo(10, 10);
  path->lineTo(30, 10);
  path->lineTo(10, 30);
  canvas->drawPath(path, p);
  // from skbug.com/7792#c23
  canvas->translate(200, 0);
  path = Path();
  path->moveTo(75, 75);
  path->lineTo(75, 75);
  path->moveTo(75, 75);
  path->lineTo(75, 75);
  path->lineTo(150, 75);
  path->lineTo(150, 150);
  path->lineTo(75, 150);
  path->close();
  canvas->drawPath(path, p);
  // from skbug.com/7792#c29
  canvas->translate(-200 * 2, 200);
  path = Path();
  path->moveTo(75, 75);
  path->lineTo(150, 75);
  path->lineTo(150, 150);
  path->lineTo(75, 150);
  path->lineTo(75, 250);
  path->moveTo(75, 75);
  path->close();
  canvas->drawPath(path, p);
  // from skbug.com/7792#c31
  canvas->translate(200, 0);
  path = Path();
  path->moveTo(75, 75);
  path->lineTo(150, 75);
  path->lineTo(150, 150);
  path->lineTo(75, 150);
  path->lineTo(75, 10);
  path->moveTo(75, 75);
  path->close();
  canvas->drawPath(path, p);
  // from skbug.com/7792#c36
  canvas->translate(200, 0);
  path = Path();
  path->moveTo(75, 75);
  path->lineTo(150, 75);
  path->lineTo(150, 150);
  path->lineTo(10, 150);
  path->moveTo(75, 75);
  path->lineTo(75, 75);
  canvas->drawPath(path, p);
  // from skbug.com/7792#c39
  canvas->translate(200, -200 * 3);
  path = Path();
  path->moveTo(150, 75);
  path->lineTo(150, 150);
  path->lineTo(75, 150);
  path->lineTo(75, 100);
  canvas->drawPath(path, p);
  // from zero_length_paths_aa
  canvas->translate(0, 200);
  path = Path();
  path->moveTo(150, 100);
  path->lineTo(150, 100);
  path->lineTo(150, 150);
  path->lineTo(75, 150);
  path->lineTo(75, 100);
  path->lineTo(75, 75);
  path->lineTo(150, 75);
  path->close();
  canvas->drawPath(path, p);
  // from skbug.com/7792#c41
  canvas->translate(0, 200);
  path = Path();
  path->moveTo(75, 75);
  path->lineTo(150, 75);
  path->lineTo(150, 150);
  path->lineTo(140, 150);
  path->lineTo(140, 75);
  path->moveTo(75, 75);
  path->close();
  canvas->drawPath(path, p);
  // from skbug.com/7792#c53
  canvas->translate(0, 200);
  path = Path();
  path->moveTo(75, 75);
  path->lineTo(150, 75);
  path->lineTo(150, 150);
  path->lineTo(140, 150);
  path->lineTo(140, 75);
  path->moveTo(75, 75);
  path->close();
  canvas->drawPath(path, p);
}

DEF_SIMPLE_GM(path_stroke_clip_crbug1070835, 30, 25, canvas)
{
  Paint p;
  p->color(0xffff0000);
  p->style(RenderPaintStyle::stroke);
  p->thickness(2);

  canvas->scale(4.16666651f / 2, 4.16666651f / 2);

  PathBuilder path;

  Vec2D pts[] = {
      {11, 12},
      {11, 18.0751324f},
      {6.07513189f, 23},
      {-4.80825292E-7f, 23},
      {-6.07513332f, 23},
      {-11, 18.0751324f},
      {-11, 11.999999f},
      {-10.999999f, 5.92486763f},
      {-6.07513189f, 1},
      {1.31173692E-7f, 1},
      {6.07513141f, 1},
      {10.9999981f, 5.92486572f},
      {11, 11.9999971f},
  };
  path.moveTo(pts[0].x, pts[0].y)
      .cubicTo(pts[1].x, pts[1].y, pts[2].x, pts[2].y, pts[3].x, pts[3].y)
      .cubicTo(pts[4].x, pts[4].y, pts[5].x, pts[5].y, pts[6].x, pts[6].y)
      .cubicTo(pts[7].x, pts[7].y, pts[8].x, pts[8].y, pts[9].x, pts[9].y)
      .cubicTo(
          pts[10].x,
          pts[10].y,
          pts[11].x,
          pts[11].y,
          pts[12].x,
          pts[12].y);

  canvas->drawPath(path.detach(), p);
}

DEF_SIMPLE_GM(path_skbug_11859, 512, 512, canvas)
{
  Paint paint;
  paint->color(0xffff0000);

  Path path;
  path->moveTo(258, -2);
  path->lineTo(258, 258);
  path->lineTo(237, 258);
  path->lineTo(240, -2);
  path->lineTo(258, -2);
  path->moveTo(-2, -2);
  path->lineTo(240, -2);
  path->lineTo(238, 131);
  path->lineTo(-2, 131);
  path->lineTo(-2, -2);

  canvas->scale(2, 2);
  canvas->drawPath(path, paint);
}

DEF_SIMPLE_GM(path_skbug_11886, 128, 256, canvas)
{
  Vec2D m = {0.f, 770.f};
  Path path;
  path->moveTo(m.x, m.y);
  path->cubicTo(
      m.x + 0.f,
      m.y + 1.f,
      m.x + 20.f,
      m.y - 750.f,
      m.x + 83.f,
      m.y + -746.f);
  Paint paint;
  canvas->drawPath(path, paint);
}