//Target - It defines the specific interface that is used by the Client class
class Compound{
   //setting up initial valules - self explanatory :)
   constructor(name){
      this.name = name;
      this.bolingPoint = -1;
      this.meltingPoint = -1;
      this.molecularWeight = -1;
      this.molecularFormula = -1;
   }

   //setting compound name
   setCompound(name){
      this.name = name;
   }

   //name getter
   display(){ return this.name; }
}


//Adapter - It adapts the interface of the class Adaptee towards the interface of the class
class RichCompound extends Compound{
   constructor(name){
      super(name);
   }
   /* This function creates Chemical Databank for each 
   new Rich compound that we are creating*/
   display(){
     //creating a new chemical databank
     this.bank = new ChemicalDatabank();
     //getting the boiling point based on the chemical name and indicator B === "Boiling"
     var boilingPoint = this.bank.getCriticalPoint(this.name, "B");
     //getting the melting point based on the chemical name and indicator M === "Melting"
     var meltingPoint = this.bank.getCriticalPoint(this.name, "M");
     //getting the molecular weight based on the chemical name
     var molecularWeight = this.bank.getMolecularWeight(this.name);
     //getting the molecular formula based on the chemical name
     var molecularFormula = this.bank.getMolecularStructure(this.name);

     //displaying all necessary information
     console.log("%c%s",
        "color: black; background: lightgreen; font-size: 24px; border: 1px solid lightgreen; border-radius: 5px; padding: 5px;"
        ,`🧪 Name: ${super.display()}`);
     console.log(`👩‍🔬 Formula: ${molecularFormula}`);
     console.log(`🏋️‍♀️ Weight: ${molecularWeight}`);
     console.log(`❄ Melting Pt: ${meltingPoint}\u00B0C`);
     console.log(`🔥 Boiling Pt: ${boilingPoint}\u00B0C`);
   }
}

//Adaptee - It defines an existing interface that should be adapted
class ChemicalDatabank{
  //databank - taken from the 'legacy API'
  getCriticalPoint(compound, point){
     var temperature = 0.0;
     //freezing point
     if (point == "M"){
        switch(compound.toLowerCase()){
           case "water": temperature = 0.0; break;
           case "benzene": temperature = 5.5; break;
           case "alcohol": temperature = -114.1; break;
        }
     }else{ //boiling point
        switch(compound.toLowerCase()){
           case "water": temperature = 100.0; break;
           case "benzene": temperature = 80.1; break;
           case "alcohol": temperature = 78.3; break;
        }
     }
     return temperature;
  }

  getMolecularStructure(compound){
     var structure = "";
     switch(compound.toLowerCase()){
        case "water": structure = "H2O"; break;
        case "benzene": structure = "C6H6"; break;
        case "alcohol": structure = "C2H6O2"; break;
     }
     return structure;
  }

  getMolecularWeight(compound){
     var weight = 0.0;
     switch(compound.toLowerCase()){
        case "water": weight = 18.015; break;
        case "benzene": weight = 78.1134; break;
        case "alcohol": weight = 46.0688; break;
     }
     return weight;
  }
}

//unadapted compound
var unadaptedCompound = new Compound("Unknown");
console.log("%c%s",
        "color: black; background: red; font-size: 24px; border: 1px solid red; border-radius: 5px; padding: 5px;",`❌ Unadapted compound: ${ unadaptedCompound.display()}`);

//adapted compounds
var water = new RichCompound("Water");
water.display();

var benzene = new RichCompound("Benzene");
benzene.display();

var alcohol = new RichCompound("Alcohol");
alcohol.display();