#ifndef HANDMADE_H
#define HANDMADE_H

#include "sdl_handmade.h"
#include "core.h"

///////////////////////////////////////////////////////////////////////////////
// NOTE: Servcies that the platform layer provides to the game.              //
///////////////////////////////////////////////////////////////////////////////

#if BUILD_INTERNAL
// NOTE: WARNING: Not for the shipping game.

typedef struct debug_read_file_result {
	U32 ContentsSize;
	void *Contents;
} debug_read_file_result;

debug_read_file_result DEBUGPlatformReadEntireFile(const char *Filename);
B32 DEBUGPlatformWriteEntireFile(const char *Filename, U32 MemorySize, void *Memory);
void DEBUGPlatformFreeFileMemory(void *Memory);
#endif

///////////////////////////////////////////////////////////////////////////////
// NOTE: Servcies that the game provides to the platform layer.              //
///////////////////////////////////////////////////////////////////////////////

typedef struct game_offscreen_buffer {
    // Pixels are always 32-bit and have the bytes in BGRX (little-endian).
    void *Memory;
    S32 Width;
    S32 Height;
    S32 Pitch;
} game_offscreen_buffer;

typedef struct game_sound_output_buffer {
    S32 SamplesPerSecond;
    S32 SampleCount;
    S16 *Samples;
} game_sound_output_buffer;

typedef struct game_button_state {
    S32 HalfTransitionCount;
    B32 EndedDown;
} game_button_state;

typedef struct game_controller_input {
    B32 IsConnected;
    B32 IsAnalog;

    F32 StickAverageX;
    F32 StickAverageY;

    union {
        game_button_state Buttons[12];
        struct {
            game_button_state MoveUp;
            game_button_state MoveDown;
            game_button_state MoveLeft;
            game_button_state MoveRight;

            game_button_state ActionUp;
            game_button_state ActionDown;
            game_button_state ActionLeft;
            game_button_state ActionRight;

            game_button_state LeftShoulder;
            game_button_state RightShoulder;

            game_button_state Start;
            game_button_state Back;

            // NOTE: All buttons must be added above this line.

            game_button_state Terminator;
        };
    };
} game_controller_input;

typedef struct game_input {
    // TODO: Insert clock value here . . .
    game_controller_input Controllers[5];
} game_input;

inline game_controller_input *GetController(game_input *Input, S32 ControllerIndex)
{
    Assert((U32)ControllerIndex < ARRAY_SIZE(Input->Controllers));
    game_controller_input *Result = &(Input->Controllers[ControllerIndex]);
    return Result;
}

typedef struct game_memory {
    B32 IsInitialized;

    U64 PermanentStorageSize;
    void *PermanentStorage; //  WARNING: This memory is REQUIRED to be zero initialized!!! (Done by the OS layer.)

    U64 TransientStorageSize;
    void *TransientStorage; //  WARNING: This memory is REQUIRED to be zero initialized!!! (Done by the OS layer.)

    debug_read_file_result (*DEBUGPlatformReadEntireFile)(const char *);
    B32 (*DEBUGPlatformWriteEntireFile)(const char *, U32, void *);
    void (*DEBUGPlatformFreeFileMemory)(void *);
} game_memory;

// typedef struct game_clocks {
    // U64 Ticks;
    // F32 SecondsElapsed;
// } game_clocks;

extern "C" void UpdateAndRender(game_memory *Memory, game_input *Input, game_offscreen_buffer *Buffer, game_sound_output_buffer *SoundBuffer);

//
//
//

typedef struct game_state {
    S32 ToneHz;
    S32 GreenOffset;
    S32 BlueOffset;
} game_state;

#endif // HANDMADE_H