module.exports = function (RED) {
  function machineGroupControl(config) {
    //create node
    RED.nodes.createNode(this, config);

    //call this => node so whenver you want to call a node function type node and the function behind it
    var node = this;

    //fetch machine object from machine.js
    const MachineGroup = require('./dependencies/machineGroup/machineGroup');
    const OutputUtils = require("../generalFunctions/helper/outputUtils");

    const mgConfig = config = { 
      general: {
        name: config.name,
        id : config.id,
        logging: {
          enabled: config.loggingEnabled,
          logLevel: config.logLevel,
        }
      },
    };

    //make new class on creation to work with.
    const mg = new MachineGroup(mgConfig);

    // put mg on node memory as source
    node.source = mg;

    //load output utils
    const output = new OutputUtils();

    //update node status
    function updateNodeStatus(mg) {

      const mode = mg.mode;
      const scaling = mg.scaling;
      const totalFlow = Math.round(mg.measurements.type("flow").variant("predicted").position("downstream").getCurrentValue() * 1) / 1;
      const totalPower = Math.round(mg.measurements.type("power").variant("predicted").position("upstream").getCurrentValue() * 1) / 1;
  
      // Calculate total capacity based on available machines
      const availableMachines = Object.values(mg.machines).filter(machine => {
          const state = machine.state.getCurrentState();
          const mode = machine.currentMode;
          return !(state === "off" || state === "maintenance" || mode === "maintenance");
      });
  
      const totalCapacity = Math.round(mg.dynamicTotals.flow.max * 1) / 1;
  
      // Determine overall status based on available machines
      const status = availableMachines.length > 0
          ? `${availableMachines.length} machines`
          : "No machines";

      let scalingSymbol = '';
      switch (scaling.toLowerCase()) {
        case 'absolute':
          scalingSymbol = 'Ⓐ'; // Clear symbol for Absolute mode
            break;
          case 'normalized':
            scalingSymbol = 'Ⓝ'; // Clear symbol for Normalized mode
          break;
        default:
          scalingSymbol = mode;
          break;
      }

  
      // Generate status text in a single line
      const text = ` ${mode} | ${scalingSymbol}: 💨=${totalFlow}/${totalCapacity} | ⚡=${totalPower} | ${status}`;
  
      return {
          fill: availableMachines.length > 0 ? "green" : "red",
          shape: "dot",
          text
      };
    }

    //never ending functions
    function tick(){
      //source.tick();
      const status = updateNodeStatus(mg);
      node.status(status);
      
      //get output
      const classOutput = mg.getOutput();
      const dbOutput = output.formatMsg(classOutput, mg.config, "influxdb");
      const pOutput = output.formatMsg(classOutput, mg.config, "process");

      //only send output on values that changed
      let msgs = [];
      msgs[0] = pOutput;
      msgs[1] = dbOutput;
    
      node.send(msgs);
    }
  
    // register child on first output this timeout is needed because of node - red stuff
    setTimeout(
      () => {
        
        /*---execute code on first start----*/
        let msgs = [];

        msgs[2] = { topic : "registerChild" , payload: node.id, positionVsParent: "upstream" };
        msgs[3] = { topic : "registerChild" , payload: node.id, positionVsParent: "downstream" };
        
        //send msg
        this.send(msgs);
      }, 
      100
    );
  
    //declare refresh interval internal node
    setTimeout(
      () => {
        /*---execute code on first start----*/
        this.interval_id = setInterval(function(){ tick() },1000)
      }, 
      1000
    );
  
    //-------------------------------------------------------------------->>what to do on input
    node.on("input", async function (msg,send,done) {

      if(msg.topic == 'registerChild'){ 
        const childId = msg.payload;
        const childObj = RED.nodes.getNode(childId);
        mg.childRegistrationUtils.registerChild(childObj.source,msg.positionVsParent);
      }

      if(msg.topic == 'setMode'){
        const mode = msg.payload;
        const source = "parent";
        mg.setMode(source,mode);
      }

      if(msg.topic == 'setScaling'){
        const scaling = msg.payload;
        mg.setScaling(scaling);
      }

      if(msg.topic == 'Qd'){
        const Qd = parseFloat(msg.payload);
        const source = "parent";

        if (isNaN(Qd)) {
          return mg.logger.error(`Invalid demand value: ${Qd}`);
        };

        try{
          
          await mg.handleInput(source,Qd);
          msg.topic = mg.config.general.name;
          msg.payload = "done";
          send(msg);
        }catch(e){
          console.log(e);
        }
      }

      // tidy up any async code here - shutdown connections and so on.
      node.on('close', function() {
        clearTimeout(this.interval_id);
      });


    });
  }
  RED.nodes.registerType("machineGroupControl", machineGroupControl);
};