#include "global.h"
#include "battle.h"
#include "battle_interface.h"
#include "battle_message.h"
#include "menu_cursor.h"
#include "palette.h"
#include "pokemon.h"
#include "task.h"
#include "text.h"

extern u16 gUnknown_030042A4;
extern u16 gUnknown_030042A0;

extern struct Window gUnknown_03004210;

extern void (*gBattleBankFunc[])(void);

extern u8 gActiveBank;
extern u8 gActionSelectionCursor[];
extern u8 gDisplayedStringBattle[];
extern u8 gMoveSelectionCursor[];
extern u8 gBattleBufferA[][0x200];
extern u8 gBankInMenu;
extern u16 gBattlePartyID[];
extern u8 gHealthboxIDs[];

extern u8 gUnknown_02038470[];
extern u16 gUnknown_030041B0;
extern u16 gUnknown_030041B4;
extern u16 gUnknown_030041B8;
extern u16 gUnknown_03004280;
extern u16 gUnknown_03004288;
extern u16 gUnknown_030042A4;
extern u16 gUnknown_030042C0;
extern u8 gUnknown_03004344;
extern u8 gUnknown_0300434C[];

extern const u8 gUnknown_08400CA8[];
extern const u8 gUnknown_08400CF3[];
extern const u8 gUnknown_08400D38[];

#if ENGLISH
#define SUB_803037C_TILE_DATA_OFFSET 440
#elif GERMAN
#define SUB_803037C_TILE_DATA_OFFSET 444
#endif

extern void sub_802C68C(void);
extern void sub_802E1B0(void);
extern void sub_802E3B4();
extern void sub_802E220();
extern void sub_802E2D4();
extern void sub_802E004(void);
extern void sub_802DF30(void);
extern void sub_80325B8(void);
extern void PlayerBufferExecCompleted(void);
extern void bx_t1_healthbar_update(void);
extern void nullsub_91(void);
extern void sub_802D924(u8);
extern void sub_802E434(void);
extern bool8 mplay_80342A4(u8);
extern void move_anim_start_t2_for_situation();

void sub_80304A8(void);

void sub_803037C(void)
{
    int r4;

    gUnknown_030042A4 = 0;
    gUnknown_030042A0 = 160;
    FillWindowRect(&gUnknown_03004210, 10, 2, 15, 27, 18);
    FillWindowRect(&gUnknown_03004210, 10, 2, 35, 16, 38);

    gBattleBankFunc[gActiveBank] = sub_802C098;

    InitWindow(&gUnknown_03004210, gUnknown_08400CF3, 400, 18, 35);
    sub_8002F44(&gUnknown_03004210);
    sub_814A5C0(0, 0xFFFF, 12, 11679, 0);

    for (r4 = 0; r4 < 4; r4++)
        nullsub_8(r4);

    sub_802E3E4(gActionSelectionCursor[gActiveBank], 0);

    StrCpyDecodeToDisplayedStringBattle((u8 *) gUnknown_08400CA8);
    InitWindow(&gUnknown_03004210, gDisplayedStringBattle, SUB_803037C_TILE_DATA_OFFSET, 2, 35);
    sub_8002F44(&gUnknown_03004210);
}

void nullsub_42()
{
}

void sub_8030468(void)
{
	sub_814A5C0(0, 0xFFFF, 12, 0x2D9F, 0);
	sub_80304A8();
	gBattleBankFunc[gActiveBank] = sub_802C68C;
}

void sub_80304A8(void)
{
	gUnknown_030042A4 = 0;
	gUnknown_030042A0 = 320;
	sub_802E1B0();
	gUnknown_03004344 = 0xFF;
	sub_802E3B4(gMoveSelectionCursor[gActiveBank], 0);
	if (gBattleBufferA[gActiveBank][2] != 1)
	{
		InitWindow(&gUnknown_03004210, gUnknown_08400D38, 656, 23, 55);
		sub_8002F44(&gUnknown_03004210);
	}
	sub_802E220();
	sub_802E2D4();
}

void PlayerHandleOpenBag(void)
{
	s32 i;

	BeginNormalPaletteFade(0xFFFFFFFF, 0, 0, 16, 0);
	gBattleBankFunc[gActiveBank] = sub_802E004;
	gBankInMenu = gActiveBank;
	for (i = 0; i < 3; i++)
		gUnknown_02038470[i] = gBattleBufferA[gActiveBank][1 + i];
}

void sub_8030594(void)
{
	s32 i;

	gUnknown_0300434C[gActiveBank] = CreateTask(TaskDummy, 0xFF);
	gTasks[gUnknown_0300434C[gActiveBank]].data[0] = gBattleBufferA[gActiveBank][1] & 0xF;
	ewram[0x16054] = gBattleBufferA[gActiveBank][1] >> 4;
	ewram[0x1609D] = gBattleBufferA[gActiveBank][2];
	ewram[0x160C0] = gBattleBufferA[gActiveBank][3];
	for (i = 0; i < 3; i++)
		gUnknown_02038470[i] = gBattleBufferA[gActiveBank][4 + i];
	BeginNormalPaletteFade(0xFFFFFFFF, 0, 0, 16, 0);
	gBattleBankFunc[gActiveBank] = sub_802DF30;
	gBankInMenu = gActiveBank;
}

void sub_8030674(void)
{
	sub_80325B8();
	BeginNormalPaletteFade(0xFFFFFFFF, 2, 0, 16, 0);
	PlayerBufferExecCompleted();
}

void PlayerHandleHealthBarUpdate(void)
{
	s16 r7;

	load_gfxc_health_bar(0);
	r7 = gBattleBufferA[gActiveBank][2] | (gBattleBufferA[gActiveBank][3] << 8);
	if (r7 != 0x7FFF)
	{
		u32 maxHP = GetMonData(&gPlayerParty[gBattlePartyID[gActiveBank]], MON_DATA_MAX_HP);
		u32 curHP = GetMonData(&gPlayerParty[gBattlePartyID[gActiveBank]], MON_DATA_HP);

		sub_8043D84(gActiveBank, gHealthboxIDs[gActiveBank], maxHP, curHP, r7);
	}
	else
	{
		u32 maxHP = GetMonData(&gPlayerParty[gBattlePartyID[gActiveBank]], MON_DATA_MAX_HP);

		sub_8043D84(gActiveBank, gHealthboxIDs[gActiveBank], maxHP, 0, r7);
		sub_80440EC(gHealthboxIDs[gActiveBank], 0, 0);
	}
	gBattleBankFunc[gActiveBank] = bx_t1_healthbar_update;
}

void PlayerHandleExpBarUpdate(void)
{
	u8 r7 = gBattleBufferA[gActiveBank][1];

	if (GetMonData(&gPlayerParty[r7], MON_DATA_LEVEL) >= 100)
	{
		PlayerBufferExecCompleted();
	}
	else
	{
		u16 r4;
		u8 taskId;

		load_gfxc_health_bar(1);
		GetMonData(&gPlayerParty[r7], MON_DATA_SPECIES);  // unused return value
		r4 = gBattleBufferA[gActiveBank][2] | (gBattleBufferA[gActiveBank][3] << 8);
		taskId = CreateTask(sub_802D924, 10);
		gTasks[taskId].data[0] = r7;
		gTasks[taskId].data[1] = r4;
		gTasks[taskId].data[2] = gActiveBank;
		gBattleBankFunc[gActiveBank] = nullsub_91;
	}
}

void PlayerHandleStatusIconUpdate(void)
{
	if (!mplay_80342A4(gActiveBank))
	{
		sub_8045A5C(gHealthboxIDs[gActiveBank], &gPlayerParty[gBattlePartyID[gActiveBank]], 9);
		ewram17810[gActiveBank].unk0_4 = 0;
		gBattleBankFunc[gActiveBank] = sub_802E434;
	}
}

void PlayerHandleStatusAnimation(void)
{
	if (!mplay_80342A4(gActiveBank))
	{
		move_anim_start_t2_for_situation(
		  gBattleBufferA[gActiveBank][1],
		  gBattleBufferA[gActiveBank][2] | (gBattleBufferA[gActiveBank][3] << 8) | (gBattleBufferA[gActiveBank][4] << 16) | (gBattleBufferA[gActiveBank][5] << 24));
		gBattleBankFunc[gActiveBank] = sub_802E434;
	}
}

void PlayerHandleStatusXor(void)
{
	u8 val = GetMonData(&gPlayerParty[gBattlePartyID[gActiveBank]], MON_DATA_STATUS) ^ gBattleBufferA[gActiveBank][1];

	SetMonData(&gPlayerParty[gBattlePartyID[gActiveBank]], MON_DATA_STATUS, &val);
	PlayerBufferExecCompleted();
}

void sub_803097C(void)
{
	PlayerBufferExecCompleted();
}

void PlayerHandleDMATransfer(void)
{
	u32 val1 = gBattleBufferA[gActiveBank][1]
			| (gBattleBufferA[gActiveBank][2] << 8)
			| (gBattleBufferA[gActiveBank][3] << 16)
			| (gBattleBufferA[gActiveBank][4] << 24);
	u16 val2 = gBattleBufferA[gActiveBank][5] | (gBattleBufferA[gActiveBank][6] << 8);

	const u8 *src = &gBattleBufferA[gActiveBank][7];
	u8 *dst = (u8 *)val1;
	u32 size = val2;

	while (1)
	{
		if (size <= 0x1000)
		{
			DmaCopy16(3, src, dst, size);
			break;
		}
		DmaCopy16(3, src, dst, 0x1000);
		src += 0x1000;
		dst += 0x1000;
		size -= 0x1000;
	}
	PlayerBufferExecCompleted();
}