#include "arm11/pages.h"
#include "arm11/drivers/mcu.h"

/// @brief base process for helping page
/// @param table 
/// @param index 
/// @param config 
/// @return 
static atp_error_t display_help( atp_callerdata_t table, atp_counter_t index, atp_linecfg_t *config )
{
	atp_text_t *list = (atp_text_t*)table;
	config->text_align = ATP_PLACEMENT_CENTER;
	config->text_color = index == 0 ? ATP_COLOR_MAGENTA : ATP_COLOR_LIGHT;
	config->text = list[index];
	return ATP_SUCCESS;
}

/// @brief display a static page for help
/// @param wording static string array
/// @param length the size of array
/// @return 
atp_error_t help_page( atp_text_t *wording, atp_counter_t length )
{
	atp_text_t current;
	atp_tips( "返回：按A/B", &current );
	atp_error_t res = atp_show( length, display_help, (atp_callerdata_t)wording );
	atp_tips( current, NULL );
	return res;
}

// --------------------------
//  code for oaf config page
// --------------------------
atp_text_t config_help[] = 
{
	"全局参数编辑操作指引",
	"~    ~    ~    ~    ~    ~    ~",
	"-修改后的全局参数保存在config.ini　",
	"保存修改时，存档方案的修改不会保存",
	"-金手指组合键为下方向+L+R+SELECT",
	" 也可以使用HOME键直接代替组合键　",
	"~    ~    ~    ~    ~    ~    ~",
	"上下方向键　　　　　　切换参数项目",
	"左右方向键　　　　　　　　　　翻页",
	"Ｌ键和Ｒ键　　　　　　调整当前参数",
	"Ａ键　　　　　　　　　应用修改退出",
	"Ｂ键　　　　　　　　　放弃修改退出",
	"Ｘ键　　　　　　　应用修改保存退出",	// X做保存，选中后走A键流程
};
atp_text_t CONFIG_OUTPUT = 	"[general]\n" \
                            "backlight=%d\n" \
                            "directBoot=%s\n" \
                            "useGbaDb=true\n\n" \
                            "[video]\n" \
                            "scaler=%d\n" \
                            "gbaGamma=2.2\n" \
                            "lcdGamma=1.54\n" \
                            "contrast=1.0\n" \
                            "brightness=0.0\n\n" \
                            "[advanced]\n" \
                            "saveOverride=false\n" \
                            "defaultSave=14\n\n" \
							"[boost]\n" \
							"cheatMode=%d\n";

typedef struct global_oaf_config OafConfig;

static char page_strbuf[512];

#define LIGHT_MIN (MCU_getSystemModel() > 3 ? 50 : 20)
#define LIGHT_MAX (MCU_getSystemModel() > 3 ? 800 : 500)
#define SCALER_SIZE 4
static atp_error_t config_item( atp_callerdata_t gblcfg, atp_counter_t index, atp_itemcfg_t *cfg )
{
	//static char buf[16];
    OafConfig *g_oafConfig = (OafConfig*)gblcfg;
	const char *scaler_val[] = {"上屏无缩放", "上屏GPU放大", "上屏DMA放大", "下屏无缩放"};
	const char *savetype_name[] = {"和卡带序列号一致", "读取ROM的特定标记", "汉化带SRAM补丁", "自行决定"};
	const char *cheatmode_name[] = {"关闭金手指", "全程激活", "组合键单次激活", "组合键激活/关闭"};
	cfg->extra_text_color = ATP_COLOR_GREEN;
	if( index == 0 )
	{
		ee_snprintf(page_strbuf, sizeof(page_strbuf), "%d", g_oafConfig->backlight);
		cfg->text = "屏幕亮度";
		cfg->extra_text = page_strbuf;
		if( g_oafConfig->backlight == LIGHT_MIN || g_oafConfig->backlight == LIGHT_MAX )
			cfg->extra_text_color = ATP_COLOR_RED;
	}
	else if( index == 1 )
	{
		cfg->text = "GAME BOY画面";
		cfg->extra_text = g_oafConfig->directBoot ? "跳过" : "显示";
	}
	else if( index == 2 )
	{
		cfg->text = "画面输出";
		cfg->extra_text = scaler_val[g_oafConfig->scaler];
	}
	else if( index == 3 )
	{
		cfg->text = "存档方案";
		cfg->extra_text = savetype_name[g_oafConfig->savePolicy];
	}
	else if( index == 4 )
	{
		cfg->text = "激活金手指";
		cfg->extra_text = cheatmode_name[g_oafConfig->cheatMode];
	}
	cfg->value = index;
	return ATP_SUCCESS;
}

static atp_pageopt_t config_adjust( atp_callerdata_t gblcfg, atp_counter_t index, atp_boolean_t x, atp_boolean_t, atp_boolean_t l, atp_boolean_t r, atp_boolean_t start, atp_boolean_t )
{
    OafConfig *g_oafConfig = (OafConfig*)gblcfg;
	if( l || r )
	{
		if( index == 0 )
		{
			u16 light = g_oafConfig->backlight;
			if( l ) 
			{
				light -= 10;
				if( light % 10 ) light += 10 - light%10;
			}
			else if( r ) 
			{
				light += 10;
				if( light % 10 ) light -= light % 10;
			}
			if( light > LIGHT_MAX ) light = LIGHT_MAX;
			else if( light < LIGHT_MIN ) light = LIGHT_MIN;
			g_oafConfig->backlight = light;
		}
		else if( index == 1 ) g_oafConfig->directBoot = !g_oafConfig->directBoot;
		else if( index == 2 ) g_oafConfig->scaler = ( SCALER_SIZE + ( g_oafConfig->scaler+(l?-1:1) ) ) % SCALER_SIZE;
		else if( index == 3 ) g_oafConfig->savePolicy = ( SAVE_POLICY_SIZE + ( g_oafConfig->savePolicy+(l?-1:1) ) ) % SAVE_POLICY_SIZE;
		else if( index == 4 ) g_oafConfig->cheatMode = ( CHEAT_MODE_SIZE + (g_oafConfig->cheatMode+(l?-1:1) ) ) % CHEAT_MODE_SIZE;
	}
	else if( start )
	{
		return ATP_POWER_OFF == help_page( config_help, sizeof(config_help)/sizeof(atp_text_t) )
				? ATP_POWER_OFF : ATP_PAGE_REFRESH;
	}
	else if( x )
	{
		int len = strlen(CONFIG_OUTPUT) + 20;
		char *data = malloc( len );
		if( data == NULL ) return ATP_PAGE_DOSELECT;		// only ignore this save

		len = ee_snprintf(
			data, len, CONFIG_OUTPUT, 
			g_oafConfig.backlight, g_oafConfig.directBoot ? "true":"false", g_oafConfig.scaler, g_oafConfig.cheatMode
		);
		fsQuickWrite("config.ini", data, len);
		free( data );
		return ATP_PAGE_DOSELECT;
	}
	return ATP_PAGE_UPDATE;
}

atp_error_t use_config_page( OafConfig *g_oafConfig )
{
	u8 base[sizeof(OafConfig)];
	memcpy( base, g_oafConfig, sizeof(OafConfig) );
	OafConfig *prev = (OafConfig*)&base[0];

	atp_text_t oldtips;
	atp_tips("保存X/确定A/返回B", &oldtips);

	ee_snprintf(
		page_strbuf, sizeof(page_strbuf), 
		"参数配置　　　　　　　　　　　当前电量:%3d%%"
		"每次开机存档方案重置为“和卡带序列号一致”，这个方案会优先使用游戏最后一次启动时设置的存档类型", MCU_getBatteryLevel());
	atp_error_t res = atp_select( page_strbuf, 5, config_item, config_adjust, g_oafConfig, 0, 0, NULL );
	atp_tips( oldtips, NULL );
	if( res == ATP_NO_ACTION )
	{
		memcpy( g_oafConfig, prev, sizeof(OafConfig) );
		return ATP_SUCCESS;
	}
	else if( res == ATP_SUCCESS )
	{
		if( prev->backlight != g_oafConfig->backlight ) 
			GFX_setBrightness(g_oafConfig->backlight, g_oafConfig->backlight);
	}
	
	return res;
}