class Component {	
	type;
  image;
  inputs=0;
  pins = [];
  subComponents = [this];
	zIndex = [];
  wires = [];
	position = { x: 0, y: 0 };
  constructor(name){
		this.type = name;
		if (!(name in chips)) {
			return;
		}
    var chip = JSON.parse(JSON.stringify(chips[name]));
    this.image = chip.image;
    this.pins = chip.pins;
    this.wires = chip.wires;
    this.inputs = chip.inputs;
    chip.subComponents.forEach((sc,i)=>{
      this.subComponents.push(new Component(sc));
			this.zIndex.push(this.subComponents[i]);
    });
    this.process();
  }
  process(){
    if (this.type=="nand"){
      this.pins[2] = (this.pins[0] && this.pins[1])?0:1;
    } else {
      this.subComponents.forEach(s=>{if(s != this) {s.process()}});
      this.wires.forEach(w=>{
        this.subComponents[w.destination.component].pins[w.destination.pin] = this.subComponents[w.source.component].pins[w.source.pin]
      });
    }
    return this.pins;
  }
	addComponent(name){
		var nc = new Component(name);
		this.subComponents.push(nc);
		this.zIndex.unshift(nc);
	}
	removeComponent(index){
		this.zIndex = this.zIndex.filter(zEntry=> this.getProperIndex(zEntry) !== index);
		this.wires.forEach(w=>{
			if(w.source.component == index)
				this.subComponents[w.destination.component].pins[w.destination.pin] = 0;
		});
		this.wires = this.wires.filter(w=>w.source.component != index && w.destination.component != index).map(w => { if(w.destination.component>index){w.destination.component-=1};if(w.source.component>index){w.source.component-=1}; return w });

    this.subComponents.splice(index,1);
    console.log("hi");
    console.log(this.subComponents);
  
	}
	sendToFront(index){
			this.zIndex=this.zIndex.filter(zEntry=>this.getProperIndex(zEntry)!==index);
			this.zIndex.push(this.subComponents[index]);
	}
	getProperIndex(zEntry){
		return this.subComponents.indexOf(zEntry);
	}
  connect(source,destination,wid){
    var sourceIsInput,destinationIsOutput;
    sourceIsInput=destinationIsOutput=0;
    if (source.pin < this.subComponents[source.component].inputs)
        sourceIsInput = true;
      if (destination.pin >= this.subComponents[destination.component].inputs)
        destinationIsOutput = true;
    source = {component:source.component, pin:source.pin};
    destination={component:destination.component,pin:destination.pin};
    if(source.component == 0){ // if the source is the chip itself
      if(destination.component == 0){ // should be direct connection between input and output pins
        if(!(sourceIsInput&&destinationIsOutput)){ // if not,
          if((!sourceIsInput&&!destinationIsOutput)){ // is it backwards?
            var tmp=source;
            source=destination;
            destination=tmp;
          } else { // no, so it's wrong
            console.log("1");
            return false;
        }
      } else {
        // connection between chip and component - both should be inputs or both should be outputs
        if(!((sourceIsInput&&!destinationIsOutput)||(!sourceIsInput && destinationIsOutput))){
          // if not, we know something must be wrong. there is no reason ever for an output pin on a component to go to an input pin or vice versa.
          console.log("2");
          return false;
        } else if(!sourceIsInput&&!destinationIsOutput) {
        
        }
      }
    }
    } else {
      if(destination.component == 0){
        //connection between component and chip! both inputs or both outputs
        if(!((sourceIsInput&&!destinationIsOutput)||(!sourceIsInput && destinationIsOutput))){
          console.log("3");
          return false;
        }
      } else { // connection between two components. source must be an output and destination must be input. cannot be same type.
        //if same type

        if(!((sourceIsInput&&destinationIsOutput)||(!sourceIsInput&&!destinationIsOutput))){
          console.log("4");
          return false;
        }
        if(sourceIsInput&&destinationIsOutput){ // if that happened its mixed up
          var tmp = source;
          tmp=destination;
          destination=tmp;
        }
      }

    }
    /*
    var sourceShouldBeInput,destinationShouldBeOutput,sourceIsInput, destinationIsOutput;
    sourceShouldBeInput = destinationShouldBeOutput = sourceIsInput = destinationIsOutput = false;
    if (source.pin < this.subComponents[source.component].inputs)
      sourceIsInput = true;
    if (destination.pin >= this.subComponents[destination.component].inputs)
      destinationIsOutput = true;
    if(source.component==0)
      sourceShouldBeInput=true;
    if(destination.component==0)
      destinationShouldBeOutput=true;

    if(sourceIsInput&&!sourceShouldBeInput){
      if(destinationIsOutput&&!destinationShouldBeOutput){
        var tmp = source;
        source = destination;
        destination = tmp;
      } else {
          if(
          console.log("no bc source is input xor destination is output");
          console.log({sourceIsInput,sourceShouldBeInput,destinationIsOutput,destinationShouldBeOutput});
          return false;
      }
    } else if(destinationIsOutput&&!destinationShouldBeOutput) {
      console.log("no bc destination is output");
          console.log({sourceIsInput,sourceShouldBeInput,destinationIsOutput,destinationShouldBeOutput});
      return false;
    }
    if(!sourceIsInput&&sourceShouldBeInput){
      if(!destinationIsOutput&&destinationShouldBeOutput){
        var tmp=source;
        source=destination;
        destination=tmp;
      } else {
        console.log({sourceIsInput,sourceShouldBeInput,destinationIsOutput,destinationShouldBeOutput});
        console.log("no bc source is output xor destination is input");
        return false;
      }
    } else if(!destinationIsOutput&&destinationShouldBeOutput) {
      console.log("no bc destination is input");
          console.log({sourceIsInput,sourceShouldBeInput,destinationIsOutput,destinationShouldBeOutput});
      return false;
    }
          console.log({sourceIsInput,sourceShouldBeInput,destinationIsOutput,destinationShouldBeOutput});
    /*
    if (sourceIsInput && destinationIsOutput) {
      if (source.component==0||destination.component==0)
        return false;
      var tmp = source;
      source=destination;
      destination = tmp;
    } else if (sourceIsInput || destinationIsOutput) {
      if (!((sourceIsInput && source.component==0)||(destinationIsOutput && destination.component==0)))
        return false;
    } else {
      if(source.component==0||destination.component==0){
        var tmp=source;
        source=destination;
        destination=tmp;
      }
    }
    */
    this.wires = this.wires.filter(w=>JSON.stringify(w.destination)!=JSON.stringify(destination));
    this.wires.push({ source: source, destination: destination, wireId:wid });
    return true;
  
  }
  disconnect(source,destination){
    this.wires = this.wires.filter(w=>JSON.stringify(w)!=JSON.stringify({source:source,destination:destination}));
  }
  addPin(isInput){
    if(isInput){
      this.inputs++;
      this.pins.unshift(0);
      this.wires.forEach(w=>{ if(w.source.component==0){w.source.pin+=1} });
    } else {
      this.pins.push(0);
    }
  }
  removePin(i){;
    this.wires = this.wires.filter(w=>!((w.source.component==0 && w.source.pin == pin)||(w.destination.component==0 && w.destination.pin == pin)));
    if(i<this.inputs){
      this.pins.shift();
      this.wires.forEach(w=>{ if(w.source.component==0){w.source.pin-=1}});
    } else {
      this.pins.pop();
    }
  }
}