#include "api/lovr.h"
#include "physics/physics.h"

int l_lovrShapeGetType(lua_State* L) {
  Shape* shape = luax_checktypeof(L, 1, Shape);
  luax_pushenum(L, &ShapeTypes, lovrShapeGetType(shape));
  return 1;
}

int l_lovrShapeGetBody(lua_State* L) {
  Shape* shape = luax_checktypeof(L, 1, Shape);
  Body* body = lovrShapeGetBody(shape);

  if (body) {
    luax_pushtype(L, Body, body);
  } else {
    lua_pushnil(L);
  }

  return 1;
}

int l_lovrShapeSetBody(lua_State* L) {
  Shape* shape = luax_checktypeof(L, 1, Shape);
  if (lua_isnoneornil(L, 2)) {
    lovrShapeSetBody(shape, NULL);
  } else {
    Body* body = luax_checktype(L, 2, Body);
    lovrShapeSetBody(shape, body);
  }

  return 0;
}

int l_lovrShapeIsEnabled(lua_State* L) {
  Shape* shape = luax_checktypeof(L, 1, Shape);
  lua_pushboolean(L, lovrShapeIsEnabled(shape));
  return 1;
}

int l_lovrShapeSetEnabled(lua_State* L) {
  Shape* shape = luax_checktypeof(L, 1, Shape);
  int enabled = lua_toboolean(L, 2);
  lovrShapeSetEnabled(shape, enabled);
  return 0;
}

int l_lovrShapeGetUserData(lua_State* L) {
  Shape* shape = luax_checktypeof(L, 1, Shape);
  int ref = (int) lovrShapeGetUserData(shape);
  lua_rawgeti(L, LUA_REGISTRYINDEX, ref);
  return 1;
}

int l_lovrShapeSetUserData(lua_State* L) {
  Shape* shape = luax_checktypeof(L, 1, Shape);
  uint64_t ref = (int) lovrShapeGetUserData(shape);
  if (ref) {
    luaL_unref(L, LUA_REGISTRYINDEX, ref);
  }

  if (lua_gettop(L) < 2) {
    lua_pushnil(L);
  }

  lua_settop(L, 2);
  ref = luaL_ref(L, LUA_REGISTRYINDEX);
  lovrShapeSetUserData(shape, (void*) ref);
  return 0;
}

int l_lovrShapeGetPosition(lua_State* L) {
  Shape* shape = luax_checktypeof(L, 1, Shape);
  float x, y, z;
  lovrShapeGetPosition(shape, &x, &y, &z);
  lua_pushnumber(L, x);
  lua_pushnumber(L, y);
  lua_pushnumber(L, z);
  return 3;
}

int l_lovrShapeSetPosition(lua_State* L) {
  Shape* shape = luax_checktypeof(L, 1, Shape);
  float x = luaL_checknumber(L, 1);
  float y = luaL_checknumber(L, 2);
  float z = luaL_checknumber(L, 3);
  lovrShapeSetPosition(shape, x, y, z);
  return 0;
}

int l_lovrShapeGetOrientation(lua_State* L) {
  Shape* shape = luax_checktypeof(L, 1, Shape);
  float angle, x, y, z;
  lovrShapeGetOrientation(shape, &angle, &x, &y, &z);
  lua_pushnumber(L, angle);
  lua_pushnumber(L, x);
  lua_pushnumber(L, y);
  lua_pushnumber(L, z);
  return 4;
}

int l_lovrShapeSetOrientation(lua_State* L) {
  Shape* shape = luax_checktypeof(L, 1, Shape);
  float angle = luaL_checknumber(L, 1);
  float x = luaL_checknumber(L, 2);
  float y = luaL_checknumber(L, 3);
  float z = luaL_checknumber(L, 4);
  lovrShapeSetOrientation(shape, angle, x, y, z);
  return 0;
}

int l_lovrShapeGetCategory(lua_State* L) {
  Shape* shape = luax_checktypeof(L, 1, Shape);
  uint32_t category = lovrShapeGetCategory(shape);
  int count = 0;

  for (int i = 0; i < 32; i++) {
    if (category & (1 << i)) {
      lua_pushinteger(L, i + 1);
      count++;
    }
  }

  return count;
}

int l_lovrShapeSetCategory(lua_State* L) {
  Shape* shape = luax_checktypeof(L, 1, Shape);
  uint32_t category = 0;

  for (int i = 2; i <= lua_gettop(L); i++) {
    category |= (1 << luaL_checkinteger(L, i));
  }

  lovrShapeSetCategory(shape, category);
  return 0;
}

int l_lovrShapeGetMask(lua_State* L) {
  Shape* shape = luax_checktypeof(L, 1, Shape);
  uint32_t mask = lovrShapeGetMask(shape);
  int count = 0;

  for (int i = 0; i < 32; i++) {
    if (mask & (1 << i)) {
      lua_pushinteger(L, i + 1);
      count++;
    }
  }

  return count;
}

int l_lovrShapeSetMask(lua_State* L) {
  Shape* shape = luax_checktypeof(L, 1, Shape);
  uint32_t mask = 0;

  for (int i = 2; i <= lua_gettop(L); i++) {
    mask |= (1 << luaL_checkinteger(L, i));
  }

  lovrShapeSetMask(shape, ~mask);
  return 0;
}