/*!
 * @brief 既知のアイテムとアーティファクトを表示する
 * @date 2020/04/23
 * @author Hourier
 */

#include "knowledge/knowledge-items.h"
#include "core/show-file.h"
#include "core/sort.h"
#include "core/stuff-handler.h"
#include "floor/floor.h"
#include "io-dump/dump-util.h"
#include "knowledge/object-group-table.h"
#include "object-enchant/artifact.h"
#include "perception/object-perception.h"
#include "object/object-flavor.h"
#include "object/object-generator.h"
#include "object/object-hook.h"
#include "object/object-kind-hook.h"
#include "object/object-kind.h"
#include "object-enchant/special-object-flags.h"
#include "term/gameterm.h"
#include "view/display-main-window.h" // 暫定、後で消す.
#include "world/world.h"

/*
 * todo okay = 既知のアーティファクト？ と思われるが確証がない
 * 分かりやすい変数名へ変更求む＆万が一未知である旨の配列なら負論理なのでゴソッと差し替えるべき
 * Check the status of "artifacts"
 * @param player_ptr プレーヤーへの参照ポインタ
 * @return なし
 */
void do_cmd_knowledge_artifacts(player_type *player_ptr)
{
	FILE *fff = NULL;
	GAME_TEXT file_name[FILE_NAME_SIZE];
	if (!open_temporary_file(&fff, file_name)) return;

	ARTIFACT_IDX *who;
	C_MAKE(who, max_a_idx, ARTIFACT_IDX);
	bool *okay;
	C_MAKE(okay, max_a_idx, bool);

	for (ARTIFACT_IDX k = 0; k < max_a_idx; k++)
	{
		artifact_type *a_ptr = &a_info[k];
		okay[k] = FALSE;
		if (!a_ptr->name) continue;
		if (!a_ptr->cur_num) continue;

		okay[k] = TRUE;
	}

	for (POSITION y = 0; y < player_ptr->current_floor_ptr->height; y++)
	{
		for (POSITION x = 0; x < player_ptr->current_floor_ptr->width; x++)
		{
			grid_type *g_ptr = &player_ptr->current_floor_ptr->grid_array[y][x];
			OBJECT_IDX this_o_idx, next_o_idx = 0;
			for (this_o_idx = g_ptr->o_idx; this_o_idx; this_o_idx = next_o_idx)
			{
				object_type *o_ptr;
				o_ptr = &player_ptr->current_floor_ptr->o_list[this_o_idx];
				next_o_idx = o_ptr->next_o_idx;
				if (!object_is_fixed_artifact(o_ptr)) continue;
				if (object_is_known(o_ptr)) continue;

				okay[o_ptr->name1] = FALSE;
			}
		}
	}

	for (ARTIFACT_IDX i = 0; i < INVEN_TOTAL; i++)
	{
		object_type *o_ptr = &player_ptr->inventory_list[i];
		if (!o_ptr->k_idx) continue;
		if (!object_is_fixed_artifact(o_ptr)) continue;
		if (object_is_known(o_ptr)) continue;

		okay[o_ptr->name1] = FALSE;
	}

	int n = 0;
	for (ARTIFACT_IDX k = 0; k < max_a_idx; k++)
	{
		if (okay[k]) who[n++] = k;
	}

	u16b why = 3;
	ang_sort(who, &why, n, ang_sort_art_comp, ang_sort_art_swap);
	for (ARTIFACT_IDX k = 0; k < n; k++)
	{
		artifact_type *a_ptr = &a_info[who[k]];
		GAME_TEXT base_name[MAX_NLEN];
		strcpy(base_name, _("未知の伝説のアイテム", "Unknown Artifact"));
		ARTIFACT_IDX z = lookup_kind(a_ptr->tval, a_ptr->sval);
		if (z)
		{
			object_type forge;
			object_type *q_ptr;
			q_ptr = &forge;
			object_prep(q_ptr, z);
			q_ptr->name1 = (byte)who[k];
			q_ptr->ident |= IDENT_STORE;
			object_desc(player_ptr, base_name, q_ptr, (OD_OMIT_PREFIX | OD_NAME_ONLY));
		}

		fprintf(fff, _("     %s\n", "     The %s\n"), base_name);
	}

	C_KILL(who, max_a_idx, ARTIFACT_IDX);
	C_KILL(okay, max_a_idx, bool);
	my_fclose(fff);
	(void)show_file(player_ptr, TRUE, file_name, _("既知の伝説のアイテム", "Artifacts Seen"), 0, 0);
	fd_kill(file_name);
}


/*
 * Build a list of object indexes in the given group. Return the number
 * of objects in the group.
 *
 * mode & 0x01 : check for non-empty group
 * mode & 0x02 : visual operation only
 */
static KIND_OBJECT_IDX collect_objects(int grp_cur, KIND_OBJECT_IDX object_idx[], BIT_FLAGS8 mode)
{
	KIND_OBJECT_IDX object_cnt = 0;
	byte group_tval = object_group_tval[grp_cur];
	for (KIND_OBJECT_IDX i = 0; i < max_k_idx; i++)
	{
		object_kind *k_ptr = &k_info[i];
		if (!k_ptr->name) continue;

		if (!(mode & 0x02))
		{
			if (!current_world_ptr->wizard)
			{
				if (!k_ptr->flavor) continue;
				if (!k_ptr->aware) continue;
			}

			int k = 0;
			for (int j = 0; j < 4; j++)
				k += k_ptr->chance[j];
			if (!k) continue;
		}

		if (TV_LIFE_BOOK == group_tval)
		{
			if (TV_LIFE_BOOK <= k_ptr->tval && k_ptr->tval <= TV_HEX_BOOK)
			{
				object_idx[object_cnt++] = i;
			}
			else
				continue;
		}
		else if (k_ptr->tval == group_tval)
		{
			object_idx[object_cnt++] = i;
		}
		else
			continue;

		if (mode & 0x01) break;
	}

	object_idx[object_cnt] = -1;
	return object_cnt;
}


/*
 * Display the objects in a group.
 */
static void display_object_list(int col, int row, int per_page, IDX object_idx[],
	int object_cur, int object_top, bool visual_only)
{
	int i;
	for (i = 0; i < per_page && (object_idx[object_top + i] >= 0); i++)
	{
		GAME_TEXT o_name[MAX_NLEN];
		TERM_COLOR a;
		SYMBOL_CODE c;
		object_kind *flavor_k_ptr;
		KIND_OBJECT_IDX k_idx = object_idx[object_top + i];
		object_kind *k_ptr = &k_info[k_idx];
		TERM_COLOR attr = ((k_ptr->aware || visual_only) ? TERM_WHITE : TERM_SLATE);
		byte cursor = ((k_ptr->aware || visual_only) ? TERM_L_BLUE : TERM_BLUE);
		if (!visual_only && k_ptr->flavor)
		{
			flavor_k_ptr = &k_info[k_ptr->flavor];
		}
		else
		{
			flavor_k_ptr = k_ptr;
		}

		attr = ((i + object_top == object_cur) ? cursor : attr);
		if (!k_ptr->flavor || (!visual_only && k_ptr->aware))
		{
			strip_name(o_name, k_idx);
		}
		else
		{
			strcpy(o_name, k_name + flavor_k_ptr->flavor_name);
		}

		c_prt(attr, o_name, row + i, col);
		if (per_page == 1)
		{
			c_prt(attr, format("%02x/%02x", flavor_k_ptr->x_attr, flavor_k_ptr->x_char), row + i, (current_world_ptr->wizard || visual_only) ? 64 : 68);
		}

		if (current_world_ptr->wizard || visual_only)
		{
			c_prt(attr, format("%d", k_idx), row + i, 70);
		}

		a = flavor_k_ptr->x_attr;
		c = flavor_k_ptr->x_char;

		Term_queue_bigchar(use_bigtile ? 76 : 77, row + i, a, c, 0, 0);
	}

	for (; i < per_page; i++)
	{
		Term_erase(col, row + i, 255);
	}
}


/*
 * Describe fake object
 */
static void desc_obj_fake(player_type *creature_ptr, KIND_OBJECT_IDX k_idx)
{
	object_type *o_ptr;
	object_type object_type_body;
	o_ptr = &object_type_body;
	object_wipe(o_ptr);
	object_prep(o_ptr, k_idx);

	o_ptr->ident |= IDENT_KNOWN;
	handle_stuff(creature_ptr);

	if (screen_object(creature_ptr, o_ptr, SCROBJ_FAKE_OBJECT | SCROBJ_FORCE_DETAIL)) return;

	msg_print(_("特に変わったところはないようだ。", "You see nothing special."));
	msg_print(NULL);
}


/*
 * Display known objects
 */
void do_cmd_knowledge_objects(player_type *creature_ptr, bool *need_redraw, bool visual_only, IDX direct_k_idx)
{
	IDX object_old, object_top;
	IDX grp_idx[100];
	int object_cnt;
	OBJECT_IDX *object_idx;

	bool visual_list = FALSE;
	TERM_COLOR attr_top = 0;
	byte char_left = 0;
	byte mode;

	TERM_LEN wid, hgt;
	Term_get_size(&wid, &hgt);

	int browser_rows = hgt - 8;
	C_MAKE(object_idx, max_k_idx, KIND_OBJECT_IDX);

	int len;
	int max = 0;
	int grp_cnt = 0;
	if (direct_k_idx < 0)
	{
		mode = visual_only ? 0x03 : 0x01;
		for (IDX i = 0; object_group_text[i] != NULL; i++)
		{
			len = strlen(object_group_text[i]);
			if (len > max) max = len;

			if (collect_objects(i, object_idx, mode))
			{
				grp_idx[grp_cnt++] = i;
			}
		}

		object_old = -1;
		object_cnt = 0;
	}
	else
	{
		object_kind *k_ptr = &k_info[direct_k_idx];
		object_kind *flavor_k_ptr;

		if (!visual_only && k_ptr->flavor)
		{
			flavor_k_ptr = &k_info[k_ptr->flavor];
		}
		else
		{
			flavor_k_ptr = k_ptr;
		}

		object_idx[0] = direct_k_idx;
		object_old = direct_k_idx;
		object_cnt = 1;
		object_idx[1] = -1;
		(void)visual_mode_command('v', &visual_list, browser_rows - 1, wid - (max + 3),
			&attr_top, &char_left, &flavor_k_ptr->x_attr, &flavor_k_ptr->x_char, need_redraw);
	}

	grp_idx[grp_cnt] = -1;
	mode = visual_only ? 0x02 : 0x00;
	IDX old_grp_cur = -1;
	IDX grp_cur = 0;
	IDX grp_top = 0;
	IDX object_cur = object_top = 0;
	bool flag = FALSE;
	bool redraw = TRUE;
	int column = 0;
	while (!flag)
	{
		object_kind *k_ptr, *flavor_k_ptr;

		if (redraw)
		{
			clear_from(0);

#ifdef JP
			prt(format("%s - アイテム", !visual_only ? "知識" : "表示"), 2, 0);
			if (direct_k_idx < 0) prt("グループ", 4, 0);
			prt("名前", 4, max + 3);
			if (current_world_ptr->wizard || visual_only) prt("Idx", 4, 70);
			prt("文字", 4, 74);
#else
			prt(format("%s - objects", !visual_only ? "Knowledge" : "Visuals"), 2, 0);
			if (direct_k_idx < 0) prt("Group", 4, 0);
			prt("Name", 4, max + 3);
			if (current_world_ptr->wizard || visual_only) prt("Idx", 4, 70);
			prt("Sym", 4, 75);
#endif

			for (IDX i = 0; i < 78; i++)
			{
				Term_putch(i, 5, TERM_WHITE, '=');
			}

			if (direct_k_idx < 0)
			{
				for (IDX i = 0; i < browser_rows; i++)
				{
					Term_putch(max + 1, 6 + i, TERM_WHITE, '|');
				}
			}

			redraw = FALSE;
		}

		if (direct_k_idx < 0)
		{
			if (grp_cur < grp_top) grp_top = grp_cur;
			if (grp_cur >= grp_top + browser_rows) grp_top = grp_cur - browser_rows + 1;

			display_group_list(0, 6, max, browser_rows, grp_idx, object_group_text, grp_cur, grp_top);
			if (old_grp_cur != grp_cur)
			{
				old_grp_cur = grp_cur;
				object_cnt = collect_objects(grp_idx[grp_cur], object_idx, mode);
			}

			while (object_cur < object_top)
				object_top = MAX(0, object_top - browser_rows / 2);
			while (object_cur >= object_top + browser_rows)
				object_top = MIN(object_cnt - browser_rows, object_top + browser_rows / 2);
		}

		if (!visual_list)
		{
			display_object_list(max + 3, 6, browser_rows, object_idx, object_cur, object_top, visual_only);
		}
		else
		{
			object_top = object_cur;
			display_object_list(max + 3, 6, 1, object_idx, object_cur, object_top, visual_only);
			display_visual_list(max + 3, 7, browser_rows - 1, wid - (max + 3), attr_top, char_left);
		}

		k_ptr = &k_info[object_idx[object_cur]];

		if (!visual_only && k_ptr->flavor)
		{
			flavor_k_ptr = &k_info[k_ptr->flavor];
		}
		else
		{
			flavor_k_ptr = k_ptr;
		}

#ifdef JP
		prt(format("<方向>%s%s%s, ESC",
			(!visual_list && !visual_only) ? ", 'r'で詳細を見る" : "",
			visual_list ? ", ENTERで決定" : ", 'v'でシンボル変更",
			(attr_idx || char_idx) ? ", 'c', 'p'でペースト" : ", 'c'でコピー"),
			hgt - 1, 0);
#else
		prt(format("<dir>%s%s%s, ESC",
			(!visual_list && !visual_only) ? ", 'r' to recall" : "",
			visual_list ? ", ENTER to accept" : ", 'v' for visuals",
			(attr_idx || char_idx) ? ", 'c', 'p' to paste" : ", 'c' to copy"),
			hgt - 1, 0);
#endif

		if (!visual_only)
		{
			if (object_cnt) object_kind_track(creature_ptr, object_idx[object_cur]);

			if (object_old != object_idx[object_cur])
			{
				handle_stuff(creature_ptr);
				object_old = object_idx[object_cur];
			}
		}

		if (visual_list)
		{
			place_visual_list_cursor(max + 3, 7, flavor_k_ptr->x_attr, flavor_k_ptr->x_char, attr_top, char_left);
		}
		else if (!column)
		{
			Term_gotoxy(0, 6 + (grp_cur - grp_top));
		}
		else
		{
			Term_gotoxy(max + 3, 6 + (object_cur - object_top));
		}

		char ch = inkey();
		if (visual_mode_command(ch, &visual_list, browser_rows - 1, wid - (max + 3), &attr_top, &char_left, &flavor_k_ptr->x_attr, &flavor_k_ptr->x_char, need_redraw))
		{
			if (direct_k_idx >= 0)
			{
				switch (ch)
				{
				case '\n':
				case '\r':
				case ESCAPE:
					flag = TRUE;
					break;
				}
			}
			continue;
		}

		switch (ch)
		{
		case ESCAPE:
		{
			flag = TRUE;
			break;
		}

		case 'R':
		case 'r':
		{
			if (!visual_list && !visual_only && (grp_cnt > 0))
			{
				desc_obj_fake(creature_ptr, object_idx[object_cur]);
				redraw = TRUE;
			}

			break;
		}

		default:
		{
			browser_cursor(ch, &column, &grp_cur, grp_cnt, &object_cur, object_cnt);
			break;
		}
		}
	}

	C_KILL(object_idx, max_k_idx, KIND_OBJECT_IDX);
}
