#include <SPIFFS.h>

#include "configuration.h"
#include "logger.h"

ConfigurationManagement::ConfigurationManagement(String FilePath)
	: mFilePath(FilePath)
{
	if(!SPIFFS.begin(true))
	{
		logPrintlnE("Mounting SPIFFS was not possible. Trying to format SPIFFS...");
		SPIFFS.format();
		if(!SPIFFS.begin())
		{
			logPrintlnE("Formating SPIFFS was not okay!");
		}
	}
}

Configuration ConfigurationManagement::readConfiguration()
{
	File file = SPIFFS.open(mFilePath);
	if(!file)
	{
		logPrintlnE("Failed to open file for reading...");
		return Configuration();
	}
	DynamicJsonDocument data(2048);
	DeserializationError error = deserializeJson(data, file);
	if(error)
	{
		logPrintlnW("Failed to read file, using default configuration.");
	}
	serializeJson(data, Serial);
	Serial.println();
	file.close();

	Configuration conf;
	if(data.containsKey("callsign"))
		conf.callsign				= data["callsign"].as<String>();

	conf.wifi.active				= data["wifi"]["active"]					| false;
	JsonArray aps					= data["wifi"]["AP"].as<JsonArray>();
	for(JsonVariant v : aps)
	{
		Configuration::Wifi::AP ap;
		ap.SSID						= v["SSID"].as<String>();
		ap.password					= v["password"].as<String>();
		conf.wifi.APs.push_back(ap);
	}
	if(data.containsKey("beacon") && data["beacon"].containsKey("message"))
		conf.beacon.message			= data["beacon"]["message"].as<String>();
	conf.beacon.positionLatitude	= data["beacon"]["position"]["latitude"]	| 0.0;
	conf.beacon.positionLongitude	= data["beacon"]["position"]["longitude"]	| 0.0;
	conf.beacon.timeout             = data["beacon"]["timeout"] | 1;
	conf.beacon.overlay   			= data["beacon"]["overlay"].as<String>();
	conf.beacon.symbol   			= data["beacon"]["overlay"] | "/";
	
	conf.aprs_is.active				= data["aprs_is"]["active"]					| false;
	if(data.containsKey("aprs_is") && data["aprs_is"].containsKey("password"))
		conf.aprs_is.password		= data["aprs_is"]["password"].as<String>();
	if(data.containsKey("aprs_is") && data["aprs_is"].containsKey("server"))
		conf.aprs_is.server			= data["aprs_is"]["server"].as<String>();
	conf.aprs_is.port				= data["aprs_is"]["port"]					| 14580;
	conf.aprs_is.beacon				= data["aprs_is"]["beacon"]					| true;
	conf.aprs_is.beaconTimeout		= data["aprs_is"]["beacon_timeout"]			| 15;
	conf.digi.active				= data["digi"]["active"]					| false;
	conf.digi.forwardTimeout		= data["digi"]["forward_timeout"]			| 5;
	conf.digi.beacon				= data["digi"]["beacon"]					| true;
	conf.digi.beaconTimeout			= data["digi"]["beacon_timeout"]			| 30;

	conf.lora.frequencyRx			= data["lora"]["frequency_rx"]				| 433775000;
	conf.lora.frequencyTx			= data["lora"]["frequency_tx"]				| 433775000;
	conf.lora.power					= data["lora"]["power"]						| 20;
	conf.lora.spreadingFactor		= data["lora"]["spreading_factor"]			| 12;
	conf.lora.signalBandwidth		= data["lora"]["signal_bandwidth"]			| 125000;
	conf.lora.codingRate4			= data["lora"]["coding_rate4"]				| 5;
	conf.display.alwaysOn			= data["display"]["always_on"]				| true;
	conf.display.timeout			= data["display"]["timeout"]				| 10;
	conf.display.overwritePin		= data["display"]["overwrite_pin"]			| 0;

	conf.ftp.active					= data["ftp"]["active"]						| false;
	JsonArray users					= data["ftp"]["user"].as<JsonArray>();
	for(JsonVariant u : users)
	{
		Configuration::Ftp::User us;
		us.name						= u["name"].as<String>();
		us.password					= u["password"].as<String>();
		conf.ftp.users.push_back(us);
	}
	if(conf.ftp.users.empty())
	{
		Configuration::Ftp::User us;
		us.name						= "ftp";
		us.password					= "ftp";
		conf.ftp.users.push_back(us);
	}

	// update config in memory to get the new fields:
	writeConfiguration(conf);

	return conf;
}

void ConfigurationManagement::writeConfiguration(Configuration conf)
{
	File file = SPIFFS.open(mFilePath, "w");
	if(!file)
	{
		logPrintlnE("Failed to open file for writing...");
		return;
	}
	DynamicJsonDocument data(2048);

	data["callsign"]						= conf.callsign;
	data["wifi"]["active"]					= conf.wifi.active;
	JsonArray aps = data["wifi"].createNestedArray("AP");
	for(Configuration::Wifi::AP ap : conf.wifi.APs)
	{
		JsonObject v = aps.createNestedObject();
		v["SSID"]							= ap.SSID;
		v["password"]						= ap.password;
	}
	data["beacon"]["message"]				= conf.beacon.message;
	data["beacon"]["position"]["latitude"] 	= conf.beacon.positionLatitude;
	data["beacon"]["position"]["longitude"]	= conf.beacon.positionLongitude;
	data["aprs_is"]["active"]				= conf.aprs_is.active;
	data["aprs_is"]["password"]				= conf.aprs_is.password;
	data["aprs_is"]["server"]				= conf.aprs_is.server;
	data["aprs_is"]["port"]					= conf.aprs_is.port;
	data["aprs_is"]["beacon"]				= conf.aprs_is.beacon;
	data["aprs_is"]["beacon_timeout"]		= conf.aprs_is.beaconTimeout;
	data["digi"]["active"]					= conf.digi.active;
	data["digi"]["forward_timeout"]			= conf.digi.forwardTimeout;
	data["digi"]["beacon"]					= conf.digi.beacon;
	data["digi"]["beacon_timeout"]			= conf.digi.beaconTimeout;
	data["lora"]["frequency_rx"]			= conf.lora.frequencyRx;
	data["lora"]["frequency_tx"]			= conf.lora.frequencyTx;
	data["lora"]["power"]					= conf.lora.power;
	data["lora"]["spreading_factor"]		= conf.lora.spreadingFactor;
	data["lora"]["signal_bandwidth"]		= conf.lora.signalBandwidth;
	data["lora"]["coding_rate4"]			= conf.lora.codingRate4;
	data["display"]["always_on"]			= conf.display.alwaysOn;
	data["display"]["timeout"]				= conf.display.timeout;
	data["display"]["overwrite_pin"]		= conf.display.overwritePin;
	data["ftp"]["active"]					= conf.ftp.active;
	JsonArray users = data["ftp"].createNestedArray("user");
	for(Configuration::Ftp::User u : conf.ftp.users)
	{
		JsonObject v = users.createNestedObject();
		v["name"]							= u.name;
		v["password"]						= u.password;
	}

	serializeJson(data, file);
	//serializeJson(data, Serial);
	//Serial.println();
	file.close();
}