/**
 * Copyright (c) 2014-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */

#pragma once

#include <assert.h>
#include <math.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>

#ifndef __cplusplus
#include <stdbool.h>
#endif

// Not defined in MSVC++
#ifndef NAN
static const unsigned long __nan[2] = {0xffffffff, 0x7fffffff};
#define NAN (*(const float *) __nan)
#endif

#define CSSUndefined NAN

#include "CSSMacros.h"

CSS_EXTERN_C_BEGIN

typedef enum CSSDirection {
  CSSDirectionInherit,
  CSSDirectionLTR,
  CSSDirectionRTL,
} CSSDirection;

typedef enum CSSFlexDirection {
  CSSFlexDirectionColumn,
  CSSFlexDirectionColumnReverse,
  CSSFlexDirectionRow,
  CSSFlexDirectionRowReverse,
} CSSFlexDirection;

typedef enum CSSJustify {
  CSSJustifyFlexStart,
  CSSJustifyCenter,
  CSSJustifyFlexEnd,
  CSSJustifySpaceBetween,
  CSSJustifySpaceAround,
} CSSJustify;

typedef enum CSSOverflow {
  CSSOverflowVisible,
  CSSOverflowHidden,
  CSSOverflowScroll,
} CSSOverflow;

// Note: auto is only a valid value for alignSelf. It is NOT a valid value for
// alignItems.
typedef enum CSSAlign {
  CSSAlignAuto,
  CSSAlignFlexStart,
  CSSAlignCenter,
  CSSAlignFlexEnd,
  CSSAlignStretch,
} CSSAlign;

typedef enum CSSPositionType {
  CSSPositionTypeRelative,
  CSSPositionTypeAbsolute,
} CSSPositionType;

typedef enum CSSWrapType {
  CSSWrapTypeNoWrap,
  CSSWrapTypeWrap,
} CSSWrapType;

typedef enum CSSMeasureMode {
  CSSMeasureModeUndefined,
  CSSMeasureModeExactly,
  CSSMeasureModeAtMost,
  CSSMeasureModeCount,
} CSSMeasureMode;

typedef enum CSSDimension {
  CSSDimensionWidth,
  CSSDimensionHeight,
} CSSDimension;

typedef enum CSSEdge {
  CSSEdgeLeft,
  CSSEdgeTop,
  CSSEdgeRight,
  CSSEdgeBottom,
  CSSEdgeStart,
  CSSEdgeEnd,
  CSSEdgeHorizontal,
  CSSEdgeVertical,
  CSSEdgeAll,
  CSSEdgeCount,
} CSSEdge;

typedef enum CSSPrintOptions {
  CSSPrintOptionsLayout = 1,
  CSSPrintOptionsStyle = 2,
  CSSPrintOptionsChildren = 4,
} CSSPrintOptions;

typedef struct CSSSize {
  float width;
  float height;
} CSSSize;

typedef struct CSSNode *CSSNodeRef;
typedef CSSSize (*CSSMeasureFunc)(CSSNodeRef node,
                                  float width,
                                  CSSMeasureMode widthMode,
                                  float height,
                                  CSSMeasureMode heightMode);
typedef void (*CSSPrintFunc)(CSSNodeRef node);
typedef int (*CSSLogger)(const char *format, ...);

#ifdef CSS_ASSERT_FAIL_ENABLED
typedef void (*CSSAssertFailFunc)(const char *message);
#endif

// CSSNode
WIN_EXPORT CSSNodeRef CSSNodeNew(void);
WIN_EXPORT void CSSNodeInit(const CSSNodeRef node);
WIN_EXPORT void CSSNodeFree(const CSSNodeRef node);
WIN_EXPORT void CSSNodeFreeRecursive(const CSSNodeRef node);
WIN_EXPORT void CSSNodeReset(const CSSNodeRef node);
WIN_EXPORT int32_t CSSNodeGetInstanceCount(void);

WIN_EXPORT void CSSNodeInsertChild(const CSSNodeRef node,
                                   const CSSNodeRef child,
                                   const uint32_t index);
WIN_EXPORT void CSSNodeRemoveChild(const CSSNodeRef node, const CSSNodeRef child);
WIN_EXPORT CSSNodeRef CSSNodeGetChild(const CSSNodeRef node, const uint32_t index);
WIN_EXPORT uint32_t CSSNodeChildCount(const CSSNodeRef node);

WIN_EXPORT void CSSNodeCalculateLayout(const CSSNodeRef node,
                                       const float availableWidth,
                                       const float availableHeight,
                                       const CSSDirection parentDirection);

// Mark a node as dirty. Only valid for nodes with a custom measure function
// set.
// CSSLayout knows when to mark all other nodes as dirty but because nodes with
// measure functions
// depends on information not known to CSSLayout they must perform this dirty
// marking manually.
WIN_EXPORT void CSSNodeMarkDirty(const CSSNodeRef node);
WIN_EXPORT bool CSSNodeIsDirty(const CSSNodeRef node);

WIN_EXPORT void CSSNodePrint(const CSSNodeRef node, const CSSPrintOptions options);

WIN_EXPORT bool CSSValueIsUndefined(const float value);

WIN_EXPORT bool CSSNodeCanUseCachedMeasurement(const bool isTextNode,
                                               const CSSMeasureMode widthMode,
                                               const float width,
                                               const CSSMeasureMode heightMode,
                                               const float height,
                                               const CSSMeasureMode lastWidthMode,
                                               const float lastWidth,
                                               const CSSMeasureMode lastHeightMode,
                                               const float lastHeight,
                                               const float lastComputedWidth,
                                               const float lastComputedHeight,
                                               const float marginRow,
                                               const float marginColumn);

#define CSS_NODE_PROPERTY(type, name, paramName)                           \
  WIN_EXPORT void CSSNodeSet##name(const CSSNodeRef node, type paramName); \
  WIN_EXPORT type CSSNodeGet##name(const CSSNodeRef node);

#define CSS_NODE_STYLE_PROPERTY(type, name, paramName)                                \
  WIN_EXPORT void CSSNodeStyleSet##name(const CSSNodeRef node, const type paramName); \
  WIN_EXPORT type CSSNodeStyleGet##name(const CSSNodeRef node);

#define CSS_NODE_STYLE_EDGE_PROPERTY(type, name, paramName)    \
  WIN_EXPORT void CSSNodeStyleSet##name(const CSSNodeRef node, \
                                        const CSSEdge edge,    \
                                        const type paramName); \
  WIN_EXPORT type CSSNodeStyleGet##name(const CSSNodeRef node, const CSSEdge edge);

#define CSS_NODE_LAYOUT_PROPERTY(type, name) \
  WIN_EXPORT type CSSNodeLayoutGet##name(const CSSNodeRef node);

CSS_NODE_PROPERTY(void *, Context, context);
CSS_NODE_PROPERTY(CSSMeasureFunc, MeasureFunc, measureFunc);
CSS_NODE_PROPERTY(CSSPrintFunc, PrintFunc, printFunc);
CSS_NODE_PROPERTY(bool, IsTextnode, isTextNode);
CSS_NODE_PROPERTY(bool, HasNewLayout, hasNewLayout);

CSS_NODE_STYLE_PROPERTY(CSSDirection, Direction, direction);
CSS_NODE_STYLE_PROPERTY(CSSFlexDirection, FlexDirection, flexDirection);
CSS_NODE_STYLE_PROPERTY(CSSJustify, JustifyContent, justifyContent);
CSS_NODE_STYLE_PROPERTY(CSSAlign, AlignContent, alignContent);
CSS_NODE_STYLE_PROPERTY(CSSAlign, AlignItems, alignItems);
CSS_NODE_STYLE_PROPERTY(CSSAlign, AlignSelf, alignSelf);
CSS_NODE_STYLE_PROPERTY(CSSPositionType, PositionType, positionType);
CSS_NODE_STYLE_PROPERTY(CSSWrapType, FlexWrap, flexWrap);
CSS_NODE_STYLE_PROPERTY(CSSOverflow, Overflow, overflow);

WIN_EXPORT void CSSNodeStyleSetFlex(const CSSNodeRef node, const float flex);
CSS_NODE_STYLE_PROPERTY(float, FlexGrow, flexGrow);
CSS_NODE_STYLE_PROPERTY(float, FlexShrink, flexShrink);
CSS_NODE_STYLE_PROPERTY(float, FlexBasis, flexBasis);

CSS_NODE_STYLE_EDGE_PROPERTY(float, Position, position);
CSS_NODE_STYLE_EDGE_PROPERTY(float, Margin, margin);
CSS_NODE_STYLE_EDGE_PROPERTY(float, Padding, padding);
CSS_NODE_STYLE_EDGE_PROPERTY(float, Border, border);

CSS_NODE_STYLE_PROPERTY(float, Width, width);
CSS_NODE_STYLE_PROPERTY(float, Height, height);
CSS_NODE_STYLE_PROPERTY(float, MinWidth, minWidth);
CSS_NODE_STYLE_PROPERTY(float, MinHeight, minHeight);
CSS_NODE_STYLE_PROPERTY(float, MaxWidth, maxWidth);
CSS_NODE_STYLE_PROPERTY(float, MaxHeight, maxHeight);

CSS_NODE_LAYOUT_PROPERTY(float, Left);
CSS_NODE_LAYOUT_PROPERTY(float, Top);
CSS_NODE_LAYOUT_PROPERTY(float, Right);
CSS_NODE_LAYOUT_PROPERTY(float, Bottom);
CSS_NODE_LAYOUT_PROPERTY(float, Width);
CSS_NODE_LAYOUT_PROPERTY(float, Height);
CSS_NODE_LAYOUT_PROPERTY(CSSDirection, Direction);

WIN_EXPORT void CSSLayoutSetLogger(CSSLogger logger);

#ifdef CSS_ASSERT_FAIL_ENABLED
// Assert
WIN_EXPORT void CSSAssertSetFailFunc(CSSAssertFailFunc func);
WIN_EXPORT void CSSAssertFail(const char *message);
#endif

CSS_EXTERN_C_END