/**
 * @file inv.h
 *
 * Interface of player inventory.
 */
#pragma once

#include <cstdint>

#include "items.h"
#include "palette.h"
#include "player.h"

namespace devilution {

#define INV_SLOT_SIZE_PX 28
#define INV_ROW_SLOT_SIZE 10

enum inv_item : int8_t {
	// clang-format off
	INVITEM_HEAD       = 0,
	INVITEM_RING_LEFT  = 1,
	INVITEM_RING_RIGHT = 2,
	INVITEM_AMULET     = 3,
	INVITEM_HAND_LEFT  = 4,
	INVITEM_HAND_RIGHT = 5,
	INVITEM_CHEST      = 6,
	INVITEM_INV_FIRST  = 7,
	INVITEM_INV_LAST   = 46,
	INVITEM_BELT_FIRST = 47,
	INVITEM_BELT_LAST  = 54,
	// clang-format on
	NUM_INVELEM,
	INVITEM_INVALID = -1,
};

// identifiers for each of the inventory squares
// see https://github.com/sanctuary/graphics/blob/master/inventory.png
enum inv_xy_slot : uint8_t {
	// clang-format off
	SLOTXY_HEAD_FIRST       = 0,
	SLOTXY_HEAD_LAST        = 3,
	SLOTXY_RING_LEFT        = 4,
	SLOTXY_RING_RIGHT       = 5,
	SLOTXY_AMULET           = 6,
	SLOTXY_HAND_LEFT_FIRST  = 7,
	SLOTXY_HAND_LEFT_LAST   = 12,
	SLOTXY_HAND_RIGHT_FIRST = 13,
	SLOTXY_HAND_RIGHT_LAST  = 18,
	SLOTXY_CHEST_FIRST      = 19,
	SLOTXY_CHEST_LAST       = 24,

	// regular inventory
	SLOTXY_INV_FIRST        = 25,
	SLOTXY_INV_ROW1_FIRST   = SLOTXY_INV_FIRST,
	SLOTXY_INV_ROW1_LAST    = 34,
	SLOTXY_INV_ROW2_FIRST   = 35,
	SLOTXY_INV_ROW2_LAST    = 44,
	SLOTXY_INV_ROW3_FIRST   = 45,
	SLOTXY_INV_ROW3_LAST    = 54,
	SLOTXY_INV_ROW4_FIRST   = 55,
	SLOTXY_INV_ROW4_LAST    = 64,
	SLOTXY_INV_LAST         = SLOTXY_INV_ROW4_LAST,

	// belt items
	SLOTXY_BELT_FIRST       = 65,
	SLOTXY_BELT_LAST        = 72,
	NUM_XY_SLOTS            = 73
	// clang-format on
};

enum item_color : uint8_t {
	// clang-format off
	ICOL_YELLOW = PAL16_YELLOW + 5,
	ICOL_WHITE  = PAL16_GRAY   + 5,
	ICOL_BLUE   = PAL16_BLUE   + 5,
	ICOL_RED    = PAL16_RED    + 5,
	// clang-format on
};

struct InvXY {
	int X;
	int Y;
};

extern bool invflag;
extern bool drawsbarflag;
extern const InvXY InvRect[73];

void FreeInvGFX();
void InitInv();

/**
 * @brief Render the inventory panel to the given buffer.
 */
void DrawInv(const CelOutputBuffer &out);

void DrawInvBelt(const CelOutputBuffer &out);
bool AutoEquipEnabled(const PlayerStruct &player, const ItemStruct &item);
bool AutoEquip(int playerId, const ItemStruct &item, bool persistItem = true);
bool AutoPlaceItemInInventory(PlayerStruct &player, const ItemStruct &item, bool persistItem = false);
bool AutoPlaceItemInInventorySlot(PlayerStruct &player, int slotIndex, const ItemStruct &item, bool persistItem);
bool AutoPlaceItemInBelt(PlayerStruct &player, const ItemStruct &item, bool persistItem = false);
bool GoldAutoPlace(PlayerStruct &player);
bool GoldAutoPlaceInInventorySlot(PlayerStruct &player, int slotIndex);
void CheckInvSwap(int pnum, BYTE bLoc, int idx, uint16_t wCI, int seed, bool bId, uint32_t dwBuff);
void inv_update_rem_item(int pnum, BYTE iv);
void CheckInvItem(bool isShiftHeld = false);
void CheckInvScrn(bool isShiftHeld);
void CheckItemStats(PlayerStruct &player);
void InvGetItem(int pnum, ItemStruct *item, int ii);
void AutoGetItem(int pnum, ItemStruct *item, int ii);
int FindGetItem(int idx, uint16_t ci, int iseed);
void SyncGetItem(int x, int y, int idx, uint16_t ci, int iseed);
bool CanPut(int x, int y);
bool TryInvPut();
void DrawInvMsg(const char *msg);
int InvPutItem(PlayerStruct &player, Point position);
int SyncPutItem(PlayerStruct &player, Point position, int idx, uint16_t icreateinfo, int iseed, int Id, int dur, int mdur, int ch, int mch, int ivalue, DWORD ibuff, int toHit, int maxDam, int minStr, int minMag, int minDex, int ac);
char CheckInvHLight();
void RemoveScroll(int pnum);
bool UseScroll();
void UseStaffCharge(int pnum);
bool UseStaff();
bool UseInvItem(int pnum, int cii);
void DoTelekinesis();
int CalculateGold(PlayerStruct &player);
bool DropItemBeforeTrig();

/* data */

} // namespace devilution