WLED/usermods/usermod_v2_auto_save/usermod_v2_auto_save.h

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#pragma once
#include "wled.h"
// v2 Usermod to automatically save settings
// to configurable preset after a change to any of
//
// * brightness
// * effect speed
// * effect intensity
// * mode (effect)
// * palette
//
// but it will wait for configurable number of seconds, a "settle"
// period in case there are other changes (any change will
// extend the "settle" window).
//
// It can be configured to load auto saved preset at startup,
// during the first `loop()`.
//
// AutoSaveUsermod is standalone, but if FourLineDisplayUsermod
// is installed, it will notify the user of the saved changes.
// format: "~ MM-DD HH:MM:SS ~"
#define PRESET_NAME_BUFFER_SIZE 25
class AutoSaveUsermod : public Usermod {
private:
bool firstLoop = true;
bool initDone = false;
bool enabled = true;
// configurable parameters
unsigned long autoSaveAfterSec = 15; // 15s by default
uint8_t autoSavePreset = 250; // last possible preset
bool applyAutoSaveOnBoot = false; // do we load auto-saved preset on boot?
// If we've detected the need to auto save, this will be non zero.
unsigned long autoSaveAfter = 0;
uint8_t knownBrightness = 0;
uint8_t knownEffectSpeed = 0;
uint8_t knownEffectIntensity = 0;
uint8_t knownMode = 0;
uint8_t knownPalette = 0;
#ifdef USERMOD_FOUR_LINE_DISPLAY
FourLineDisplayUsermod* display;
#endif
// strings to reduce flash memory usage (used more than twice)
static const char _name[];
static const char _autoSaveEnabled[];
static const char _autoSaveAfterSec[];
static const char _autoSavePreset[];
static const char _autoSaveApplyOnBoot[];
void inline saveSettings() {
char presetNameBuffer[PRESET_NAME_BUFFER_SIZE];
updateLocalTime();
sprintf_P(presetNameBuffer,
PSTR("~ %02d-%02d %02d:%02d:%02d ~"),
month(localTime), day(localTime),
hour(localTime), minute(localTime), second(localTime));
savePreset(autoSavePreset, true, presetNameBuffer);
}
void inline displayOverlay() {
#ifdef USERMOD_FOUR_LINE_DISPLAY
if (display != nullptr) {
display->wakeDisplay();
display->overlay("Settings", "Auto Saved", 1500);
}
#endif
}
public:
// gets called once at boot. Do all initialization that doesn't depend on
// network here
void setup() {
#ifdef USERMOD_FOUR_LINE_DISPLAY
// This Usermod has enhanced funcionality if
// FourLineDisplayUsermod is available.
display = (FourLineDisplayUsermod*) usermods.lookup(USERMOD_ID_FOUR_LINE_DISP);
#endif
initDone = true;
}
// gets called every time WiFi is (re-)connected. Initialize own network
// interfaces here
void connected() {}
/*
* Da loop.
*/
void loop() {
if (!autoSaveAfterSec || !enabled || strip.isUpdating()) return; // setting 0 as autosave seconds disables autosave
unsigned long now = millis();
uint8_t currentMode = strip.getMode();
uint8_t currentPalette = strip.getSegment(0).palette;
if (firstLoop) {
firstLoop = false;
if (applyAutoSaveOnBoot) applyPreset(autoSavePreset);
knownBrightness = bri;
knownEffectSpeed = effectSpeed;
knownEffectIntensity = effectIntensity;
knownMode = currentMode;
knownPalette = currentPalette;
return;
}
unsigned long wouldAutoSaveAfter = now + autoSaveAfterSec*1000;
if (knownBrightness != bri) {
knownBrightness = bri;
autoSaveAfter = wouldAutoSaveAfter;
} else if (knownEffectSpeed != effectSpeed) {
knownEffectSpeed = effectSpeed;
autoSaveAfter = wouldAutoSaveAfter;
} else if (knownEffectIntensity != effectIntensity) {
knownEffectIntensity = effectIntensity;
autoSaveAfter = wouldAutoSaveAfter;
} else if (knownMode != currentMode) {
knownMode = currentMode;
autoSaveAfter = wouldAutoSaveAfter;
} else if (knownPalette != currentPalette) {
knownPalette = currentPalette;
autoSaveAfter = wouldAutoSaveAfter;
}
if (autoSaveAfter && now > autoSaveAfter) {
autoSaveAfter = 0;
// Time to auto save. You may have some flickry?
saveSettings();
displayOverlay();
}
}
/*
* addToJsonInfo() can be used to add custom entries to the /json/info part of the JSON API.
* Creating an "u" object allows you to add custom key/value pairs to the Info section of the WLED web UI.
* Below it is shown how this could be used for e.g. a light sensor
*/
//void addToJsonInfo(JsonObject& root) {
//JsonObject user = root["u"];
//if (user.isNull()) user = root.createNestedObject("u");
//JsonArray data = user.createNestedArray(F("Autosave"));
//data.add(F("Loaded."));
//}
/*
* addToJsonState() can be used to add custom entries to the /json/state part of the JSON API (state object).
* Values in the state object may be modified by connected clients
*/
//void addToJsonState(JsonObject& root) {
//}
/*
* readFromJsonState() can be used to receive data clients send to the /json/state part of the JSON API (state object).
* Values in the state object may be modified by connected clients
*/
//void readFromJsonState(JsonObject& root) {
// if (!initDone) return; // prevent crash on boot applyPreset()
//}
/*
* addToConfig() can be used to add custom persistent settings to the cfg.json file in the "um" (usermod) object.
* It will be called by WLED when settings are actually saved (for example, LED settings are saved)
* If you want to force saving the current state, use serializeConfig() in your loop().
*
* CAUTION: serializeConfig() will initiate a filesystem write operation.
* It might cause the LEDs to stutter and will cause flash wear if called too often.
* Use it sparingly and always in the loop, never in network callbacks!
*
* addToConfig() will also not yet add your setting to one of the settings pages automatically.
* To make that work you still have to add the setting to the HTML, xml.cpp and set.cpp manually.
*
* I highly recommend checking out the basics of ArduinoJson serialization and deserialization in order to use custom settings!
*/
void addToConfig(JsonObject& root) {
// we add JSON object: {"Autosave": {"autoSaveAfterSec": 10, "autoSavePreset": 99}}
JsonObject top = root.createNestedObject(FPSTR(_name)); // usermodname
top[FPSTR(_autoSaveEnabled)] = enabled;
top[FPSTR(_autoSaveAfterSec)] = autoSaveAfterSec; // usermodparam
top[FPSTR(_autoSavePreset)] = autoSavePreset; // usermodparam
top[FPSTR(_autoSaveApplyOnBoot)] = applyAutoSaveOnBoot;
DEBUG_PRINTLN(F("Autosave config saved."));
}
/*
* readFromConfig() can be used to read back the custom settings you added with addToConfig().
* This is called by WLED when settings are loaded (currently this only happens once immediately after boot)
*
* readFromConfig() is called BEFORE setup(). This means you can use your persistent values in setup() (e.g. pin assignments, buffer sizes),
* but also that if you want to write persistent values to a dynamic buffer, you'd need to allocate it here instead of in setup.
* If you don't know what that is, don't fret. It most likely doesn't affect your use case :)
*/
void readFromConfig(JsonObject& root) {
// we look for JSON object: {"Autosave": {"autoSaveAfterSec": 10, "autoSavePreset": 99}}
JsonObject top = root[FPSTR(_name)];
if (top.isNull()) {
DEBUG_PRINTLN(F("No config found. (Using defaults.)"));
return;
}
if (top[FPSTR(_autoSaveEnabled)].is<bool>()) {
// reading from cfg.json
enabled = top[FPSTR(_autoSaveEnabled)].as<bool>();
} else {
// reading from POST message
String str = top[FPSTR(_autoSaveEnabled)]; // checkbox -> off or on
enabled = (bool)(str!="off"); // off is guaranteed to be present
}
autoSaveAfterSec = min(3600,max(10,top[FPSTR(_autoSaveAfterSec)].as<int>()));
autoSavePreset = min(250,max(100,top[FPSTR(_autoSavePreset)].as<int>()));
if (top[FPSTR(_autoSaveApplyOnBoot)].is<bool>()) {
// reading from cfg.json
applyAutoSaveOnBoot = top[FPSTR(_autoSaveApplyOnBoot)].as<bool>();
} else {
// reading from POST message
String str = top[FPSTR(_autoSaveApplyOnBoot)]; // checkbox -> off or on
applyAutoSaveOnBoot = (bool)(str!="off"); // off is guaranteed to be present
}
DEBUG_PRINTLN(F("Autosave config (re)loaded."));
}
/*
* getId() allows you to optionally give your V2 usermod an unique ID (please define it in const.h!).
* This could be used in the future for the system to determine whether your usermod is installed.
*/
uint16_t getId() {
return USERMOD_ID_AUTO_SAVE;
}
};
// strings to reduce flash memory usage (used more than twice)
const char AutoSaveUsermod::_name[] PROGMEM = "Autosave";
const char AutoSaveUsermod::_autoSaveEnabled[] PROGMEM = "enabled";
const char AutoSaveUsermod::_autoSaveAfterSec[] PROGMEM = "autoSaveAfterSec";
const char AutoSaveUsermod::_autoSavePreset[] PROGMEM = "autoSavePreset";
const char AutoSaveUsermod::_autoSaveApplyOnBoot[] PROGMEM = "autoSaveApplyOnBoot";