ESP8266_Treppenlicht/lib/httpserver/httpserver.h

#pragma once

#include "filesys.h"
#include <ESP8266WebServer.h>

class HTTPServer : public ESP8266WebServer {
private:
    const char* rootDir;
 
    bool addRootFileHandler();
    bool formatFS() {
        return format_fs();
    }
    void listRoot() {
        ls(rootDir);
    }

public:
    HTTPServer(const int _port, const char* _rootDir) :
       ESP8266WebServer(_port), rootDir(_rootDir)
    { }
    ~HTTPServer() 
    {
        Serial.printf("[HTTPServer] shut down ...\n\r");
    }

    bool start() {
        if(!mount_fs())
            return false;
        Serial.printf("[HTTPServer] LittleFS mounted !\n\r");

        Serial.printf("[HTTPServer] root:\n\r");
        this->listRoot();
        Serial.printf("\n\r");

        // https://stackoverflow.com/questions/7627098/what-is-a-lambda-expression-in-c11
        on("/compress.html", [this]() {
            File f = open("/compress.html.gz");
            if (!f) {
                Serial.println("Failed to open file for reading");
                send(404, "text/plain", "Failed to open file for reading");
            }
            else
            {
                Serial.println("Streaming /compress.html.gz to client");
                const String cont = "text/html";
                streamFile(f, cont);
            }
        });
        on("/comp.html", [this]() {
            File f = open("/comp.html.gz");
            if (!f) {
                Serial.println("Failed to open file for reading");
                send(404, "text/plain", "Failed to open file for reading");
            }
            else
            {
                Serial.println("Streaming /comp.html.gz to client");
                const String cont = "text/html";
                streamFile(f, cont);
            }
        });       
        
        on("/terminal", [this]() {
            String log_msg = "terminal: millis: ";
            log_msg += millis();
            send(200, "text/plain", log_msg);
        });

        onNotFound([this]() {
            String message = "File Not Found\n\n";
            message += "URI: ";
            message += uri();
            message += "\nMethod: ";
            message += (method() == HTTP_GET) ? "GET" : "POST";
            message += "\nArguments: ";
            message += args();
            message += "\n";

            for (uint8_t i = 0; i < args(); i++) {
                message += " " + argName(i) + ": " + arg(i) + "\n";
            }
            send(404, "text/plain", message);
        });

        if( this->addRootFileHandler() ){
            this->begin();
            Serial.printf("[HTTPServer] Server active on Port 80 !\n\r");
            return true;
        }
        Serial.printf("[HTTPServer] Not starting Server, something went wrong !\n\r");
        return false;
    }
};