[FR] (Multiple user-support HR->PWR)

[Nico1320]

Is your feature request related to a problem? Please describe.
I have not yet built SS2K, but since I had an esp32 lying around, I would give it shot for testing. I've noticed that there isn't support for multiple users (When using HR for power calculation)

Describe the solution you'd like
Add the ability to save and select hr->pwr settings for different users

Describe alternatives you've considered
Re-enter hr->pwr settings each time before use

[doudar]

I like the idea! I'll put it on the list but it could be quite a while before I get around to it. In the meantime if you'd like to check into it, I'd recommend just creating an interface to select user profiles in:

https://github.com/doudar/SmartSpin2k/blob/1f8d20299e34dc9c27d6b98c2bcb9d22a16e3918/data/hrtowatts.html

Adding a vector parameter to the physicalWorkingCapacity Class to hold the list of user names or numbers and the index of the selected one.
Adding a Class to the physicalWorkingCapacity Class that would then hold all of the session1 and session 2 parameters for all users.

SmartSpin2k/include/SmartSpin_parameters.h

Lines 163 to 169 in 1f8d202

	class physicalWorkingCapacity {
	public:
	int session1HR;
	int session1Pwr;
	int session2HR;
	int session2Pwr;
	bool hr2Pwr;

Then refactoring the physicalWorkingCapacity::loadFromSPIFFS() function in SmartSpin_parameters.cpp to save this info.

SmartSpin2k/src/SmartSpin_parameters.cpp

Lines 277 to 309 in 1f8d202

	// Loads the JSON configuration from a file
	void physicalWorkingCapacity::loadFromSPIFFS() {
	// Open file for reading
	SS2K_LOG(CONFIG_LOG_TAG, "Reading File: %s", userPWCFILENAME);
	File file = SPIFFS.open(userPWCFILENAME);
	// load defaults if filename doesn't exist
	if (!file) {
	SS2K_LOG(CONFIG_LOG_TAG, "Couldn't find configuration file. Loading Defaults");
	setDefaults();
	return;
	}
	StaticJsonDocument<500> doc;
	// Deserialize the JSON document
	DeserializationError error = deserializeJson(doc, file);
	if (error) {
	SS2K_LOG(CONFIG_LOG_TAG, "Failed to read file, using default configuration");
	setDefaults();
	return;
	}
	// Copy values from the JsonDocument to the Config
	session1HR = doc["session1HR"];
	session1Pwr = doc["session1Pwr"];
	session2HR = doc["session2HR"];
	session2Pwr = doc["session2Pwr"];
	hr2Pwr = doc["hr2Pwr"];
	SS2K_LOG(CONFIG_LOG_TAG, "Config File Loaded: %s", userPWCFILENAME);
	file.close();
	}

Then refactoring the calculateInstPwrFromHR() function to use the new data formats above.

SmartSpin2k/src/BLE_Server.cpp

Lines 557 to 588 in 1f8d202

	void calculateInstPwrFromHR() {
	static int oldHR = rtConfig.getSimulatedHr();
	static int newHR = rtConfig.getSimulatedHr();
	static double delta = 0;
	oldHR = newHR; // Copying HR from Last loop
	newHR = rtConfig.getSimulatedHr();
	delta = (newHR - oldHR) / (BLE_CLIENT_DELAY / 1000);
	// userConfig.setSimulatedWatts((s1Pwr*s2HR)-(s2Pwr*S1HR))/(S2HR-s1HR)+(userConfig.getSimulatedHr(*((s1Pwr-s2Pwr)/(s1HR-s2HR)));
	int avgP = ((userPWC.session1Pwr * userPWC.session2HR) - (userPWC.session2Pwr * userPWC.session1HR)) / (userPWC.session2HR - userPWC.session1HR) +
	(newHR * ((userPWC.session1Pwr - userPWC.session2Pwr) / (userPWC.session1HR - userPWC.session2HR)));
	if (avgP < 50) {
	avgP = 50;
	}
	if (delta < 0) {
	// magic math here for inst power
	}
	if (delta > 0) {
	// magic math here for inst power
	}
	#ifndef DEBUG_HR_TO_PWR
	rtConfig.setSimulatedWatts(avgP);
	rtConfig.setSimulatedCad(90);
	#endif // DEBUG_HR_TO_PWR
	SS2K_LOG(BLE_SERVER_LOG_TAG, "Power From HR: %d", avgP);
	}