#include "configuration.h"
#include "video.h"
#include "gui.h"

#include <stdlib.h>
#include <string>

// extern VideoDev *videodev;
extern GtkBuilder *_builder_;			// work around for threads


Configuration::Configuration() {
	debugpath = NULL;
	readdumppath = NULL;
};


Configuration::~Configuration() {
};


std::string Configuration::GetDefaultFileName() {
	std::string fn = "";
	char *hd = getenv ((char*)"HOME");

	if (hd != NULL) {
		fn = hd;
		fn = fn + "/" + CONFIGURATION_DEFAULTFILE;
	}

	return fn;
};


void Configuration::SaveDefault() {
	std::string fn = GetDefaultFileName();
	if (fn.length() < 1) {
		printf ("%s:%d %s could not read HOME environment variable\n", __FILE__, __LINE__, __FUNCTION__);
		return;
	}
	SaveConfig (fn);
};


void Configuration::LoadDefault() {
	std::string fn = GetDefaultFileName();
	if (fn.length() < 1) {
		printf ("%s:%d %s could not read HOME environment variable\n", __FILE__, __LINE__, __FUNCTION__);
		return;
	}
	LoadConfig (fn);
};


/*
 * collect all the settings, and push them into the JSONparse object
 * save the json string.
 */
void Configuration::SaveConfig(std::string filename) {
	JSONParse jp;
	string vstr;
	int i;
	GtkWidget *cb;
	GtkWidget *cbe;

	//
	// Add resolution, format and video device to config json element
	cb = GTK_WIDGET(gtk_builder_get_object (GTK_BUILDER(_builder_), "cb-videores"));
	cbe = gtk_bin_get_child(GTK_BIN(cb));
	jp.AddObject("video_resolution", (string) gtk_entry_get_text(GTK_ENTRY(cbe)));
	cb = GTK_WIDGET(gtk_builder_get_object (GTK_BUILDER(_builder_), "cb-videofmt"));
	cbe = gtk_bin_get_child(GTK_BIN(cb));
	jp.AddObject("video_format", (string) gtk_entry_get_text(GTK_ENTRY(cbe)));
	cb = GTK_WIDGET(gtk_builder_get_object (GTK_BUILDER(_builder_), "cb-videodev"));
	cbe = gtk_bin_get_child(GTK_BIN(cb));
	jp.AddObject("device", (string) gtk_entry_get_text(GTK_ENTRY(cbe)));


	//
	// histogram settings and debayer mode
	jp.AddObject("histogram_log", histogram_log);
	jp.AddObject("debayer_mode", debayer_mode);


	//
	// save button config
	for (i = 0; i < BTN_PRESET_MAX; i++) {
		JSONElement je;
		je.type = JSON_T_ARRAY;
		je.name = "presetbtn"+ std::to_string(i);
		list<VideoDevCtrl>::iterator vciter;
		JSONParse jpbtn;
		jpbtn.Clear();

		// convert VideoDevCtrl to JSON
		for (vciter = presetbtn[i].begin(); vciter != presetbtn[i].end(); vciter++) {
			jpbtn.Clear();
			jpbtn.AddObject("name", vciter->name);
			jpbtn.AddObject("id", (signed int) vciter->id);
			jpbtn.AddObject("max", vciter->max);
			jpbtn.AddObject("min", vciter->min);
			jpbtn.AddObject("value", vciter->value);

			if (je.value.length()>0) je.value += ","  + jpbtn.ToString();
			else je.value = jpbtn.ToString();
		}
		jp.AddObject(je);
	}

	//
	// save config
	if (jp.SaveToFile(filename)) {
		printf ("%s:%d %s could not save to file [%s] Error: %s\n", __FILE__, __LINE__, __FUNCTION__,
				filename.c_str(), strerror(errno));
	}
};


void Configuration::LoadConfig(std::string filename) {
	JSONParse jp;
	string vstr;
	int i;
	JSONElement je;

	if (jp.LoadFromFile(filename)) {
		printf ("%s:%d %s could not load from file [%s] Error: %s\n", __FILE__, __LINE__, __FUNCTION__,
				filename.c_str(), strerror(errno));
	}
	else {
		printf ("%s:%d %s\n", __FILE__, __LINE__, __FUNCTION__);

		//
		// set resolution and video stream mode
		//
		if (jp.GetValue("video_resolution", &vstr)) {
			GtkWidget *cbox = GTK_WIDGET(gtk_builder_get_object (GTK_BUILDER(_builder_), "cb-videores"));
			GtkWidget *cbdevice = gtk_bin_get_child(GTK_BIN(cbox));
			gtk_entry_set_text(GTK_ENTRY(cbdevice), vstr.c_str());
		}
		if (jp.GetValue("video_format", &vstr)) {
			GtkWidget *cbox = GTK_WIDGET(gtk_builder_get_object (GTK_BUILDER(_builder_), "cb-videofmt"));
			GtkWidget *cbdevice = gtk_bin_get_child(GTK_BIN(cbox));
			gtk_entry_set_text(GTK_ENTRY(cbdevice), vstr.c_str());
		}

		jp.GetValueInt("histogram_log", &i);
		SetHistogramLog(i);

		jp.GetValueInt("debayer_mode", &i);
		SetDebayerMode(i);

		//
		// start streaming if a device was selected.
		//
		if (jp.GetValue("device", &vstr)) {
			GtkWidget *cbox = GTK_WIDGET(gtk_builder_get_object (GTK_BUILDER(_builder_), "cb-videodev"));
			GtkWidget *cbdevice = gtk_bin_get_child(GTK_BIN(cbox));
			gtk_entry_set_text(GTK_ENTRY(cbdevice), vstr.c_str());
		}

		//
		// load the button config
		//
		for (i = 0; i < BTN_PRESET_MAX; i++) {
			VideoDevCtrl ctrl;
			JSONParse jpbtn, jpctrl;
			list<JSONElement> je;
			list<JSONElement>::iterator iter;
			int ctrli;
			int64_t id;

			//
			// load all controls from JSONParse object
			presetbtn[i].clear();
			ctrli = 0;
			while (jp.GetObjectIdx("presetbtn"+ std::to_string(i), ctrli, &jpctrl)) {
				jpctrl.GetValue("name", &ctrl.name);
				jpctrl.GetValueInt64("id", &id);
				ctrl.id = id;
				jpctrl.GetValueInt("min", &ctrl.min);
				jpctrl.GetValueInt("max", &ctrl.max);
				jpctrl.GetValueInt("value", &ctrl.value);
				presetbtn[i].push_back(ctrl);
				ctrli++;
			}
		}
	}
};


/*
 *  presetbtn[btn]
 */
void Configuration::SetPresetButton (int btn, list<VideoDevCtrl> *parameters) {
	if (btn < 0 || btn >= BTN_PRESET_MAX) return;
	presetbtn[btn] = *parameters;
};


list<VideoDevCtrl> Configuration::GetPresetButton (int btn) {
	list<VideoDevCtrl> emptylist;
	if (btn >= 0 && btn < BTN_PRESET_MAX) return presetbtn[btn];
	return emptylist;
};


void Configuration::SetHistogramLog(int trueorfalse) {
	GtkWidget *cfg_logh = GTK_WIDGET(gtk_builder_get_object (GTK_BUILDER(_builder_), "menu-settings-loghistogram"));
	gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM(cfg_logh), (trueorfalse == 1));
	histogram_log = trueorfalse;
};



void Configuration::SetDebayerMode(int trueorfalse) {
	GtkWidget *cfg_debayer = GTK_WIDGET(gtk_builder_get_object (GTK_BUILDER(_builder_), "menu-settings-bilinearrgb"));
	gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM(cfg_debayer), (trueorfalse == 1));
	debayer_mode = trueorfalse;
};