WallSegmentClock/app/webserver.cpp

#include <user_config.h>
#include <SmingCore/SmingCore.h>

#include "../include/configuration.h"
#include "webserver.h"

bool serverStarted = false;
HttpServer server;
extern String StrT, StrRH, StrHI, StrCR, StrCF; // Sensors string values

void onIndex(HttpRequest &request, HttpResponse &response)
{
	TemplateFileStream *tmpl = new TemplateFileStream("index.html");
	auto &vars = tmpl->variables();
	vars["T"] = StrT;
	vars["RH"] = StrRH;
	vars["HI"] = StrHI;
	vars["CR"] = StrCR;
	vars["CF"] = StrCF;
	vars["ADC"] = String(system_adc_read());
	vars["VDD"] = String(system_get_vdd33());
	vars["TIME"] = SystemClock.getSystemTimeString();
	response.sendTemplate(tmpl);
}

void onConfiguration(HttpRequest &request, HttpResponse &response)
{
	MeteoConfig cfg = loadConfig();
	if (request.getRequestMethod() == RequestMethod::POST)
	{
//		debugf("Update config");
		// Update config
		if (request.getPostParameter("SSID").length() > 0) // Network
		{
			cfg.NetworkSSID = request.getPostParameter("SSID");
			cfg.NetworkPassword = request.getPostParameter("Password");
		}
		if (request.getPostParameter("TZ").length() > 0) // Correction
		{
			cfg.AddT = request.getPostParameter("T").toFloat();
			cfg.AddRH = request.getPostParameter("RH").toFloat();
			cfg.AddTZ = request.getPostParameter("TZ").toFloat();
		}
		if (request.getPostParameter("Trigger").length() > 0) // Trigger
		{
			cfg.Trigger = (TriggerType)request.getPostParameter("Trigger").toInt();
			cfg.RangeMin = request.getPostParameter("RMin").toFloat();
			cfg.RangeMax = request.getPostParameter("RMax").toFloat();
		}
		saveConfig(cfg);
		SystemClock.setTimeZone(cfg.AddTZ);
		response.redirect();
	}

//	debugf("Send template");
	TemplateFileStream *tmpl = new TemplateFileStream("config.html");
	auto &vars = tmpl->variables();
	vars["SSID"] = cfg.NetworkSSID;
	vars["T"] = String(cfg.AddT, 2);
	vars["RH"] = String(cfg.AddRH, 2);
	vars["TZ"] = String(cfg.AddTZ, 2);
	vars["Trigger"] = String((int)cfg.Trigger);
	vars["RMin"] = String(cfg.RangeMin, 2);
	vars["RMax"] = String(cfg.RangeMax, 2);
	response.sendTemplate(tmpl);
}

void onFile(HttpRequest &request, HttpResponse &response)
{
	String file = request.getPath();
	if (file[0] == '/')
		file = file.substring(1);

	if (file[0] == '.')
		response.forbidden();
	else
	{
		response.setCache(86400, true); // It's important to use cache for better performance.
		response.sendFile(file);
	}
}

/// API ///

void onApiDoc(HttpRequest &request, HttpResponse &response)
{
	TemplateFileStream *tmpl = new TemplateFileStream("api.html");
	auto &vars = tmpl->variables();
	vars["IP"] = (WifiStation.isConnected() ? WifiStation.getIP() : WifiAccessPoint.getIP()).toString();
	response.sendTemplate(tmpl);
}

void onApiSensors(HttpRequest &request, HttpResponse &response)
{
	JsonObjectStream* stream = new JsonObjectStream();
	JsonObject& json = stream->getRoot();
	json["status"] = (bool)true;
	JsonObject& sensors = json.createNestedObject("sensors");
	sensors["temperature"] = StrT.c_str();
	sensors["humidity"] = StrRH.c_str();
	sensors["heatindex"] = StrHI.c_str();
	sensors["comfortp"] = StrCR.c_str();
	sensors["comforts"] = StrCF.c_str();
	sensors["adcvalue"] = String(system_adc_read());
	sensors["vddvalue"] = String(system_get_vdd33());
	sensors["datetime"] = SystemClock.getSystemTimeString();
	response.sendJsonObject(stream);
}

void onApiOutput(HttpRequest &request, HttpResponse &response)
{
	int val = request.getQueryParameter("control", "-1").toInt();
	if (val == 0 || val == 1)
		digitalWrite(CONTROL_PIN, val == 1);
	else
		val = -1;

	JsonObjectStream* stream = new JsonObjectStream();
	JsonObject& json = stream->getRoot();
	json["status"] = val != -1;
	if (val == -1) json["error"] = "Wrong control parameter value, please use: ?control=0|1";
	response.sendJsonObject(stream);
}

void startWebServer()
{
	if (serverStarted) return;

	server.listen(80);
	server.addPath("/", onIndex);
	server.addPath("/api", onApiDoc);
	server.addPath("/api/sensors", onApiSensors);
	server.addPath("/api/output", onApiOutput);
	server.addPath("/config", onConfiguration);
	server.setDefaultHandler(onFile);
	serverStarted = true;
/*
	if (WifiStation.isEnabled())
		debugf("STA: %s", WifiStation.getIP().toString().c_str());
	if (WifiAccessPoint.isEnabled())
		debugf("AP: %s", WifiAccessPoint.getIP().toString().c_str());
*/
}