package com.jsql.model.injection.strategy.blind.callable;
   
   import com.jsql.model.injection.strategy.blind.InjectionVendor;
   import name.fraser.neil.plaintext.diff_match_patch;
   import static name.fraser.neil.plaintext.diff_match_patch.Diff;
   
   import java.util.LinkedList;
   import java.util.List;
   import java.util.concurrent.CopyOnWriteArrayList;
  
  public class CallableVendor extends AbstractCallableBit<CallableVendor> {
  
      private LinkedList<Diff> opcodes = new LinkedList<>();  // List of differences found between the reference page, and the present page
  
      private static final diff_match_patch DIFF_MATCH_PATCH = new diff_match_patch();
  
      private final InjectionVendor injectionCharInsertion;
  
      private final String metadataInjectionProcess;
  
      public CallableVendor(String inj, InjectionVendor injectionCharInsertion, String metadataInjectionProcess) {
          this.injectionCharInsertion = injectionCharInsertion;
          this.metadataInjectionProcess = metadataInjectionProcess;
          this.booleanUrl = inj;
      }
  
      @Override
      public boolean isTrue() {
          List<Diff> copyTrueMarks = new CopyOnWriteArrayList<>(this.injectionCharInsertion.getConstantTrueMark());
          for (Diff trueDiff: copyTrueMarks) {
              if (!this.opcodes.contains(trueDiff)) {
                  return false;
              }
          }
          return true;
      }
  
      @Override
      public CallableVendor call() {
          String source = this.injectionCharInsertion.callUrl(this.booleanUrl, this.metadataInjectionProcess, this);
          this.opcodes = CallableVendor.DIFF_MATCH_PATCH.diff_main(
              this.injectionCharInsertion.getBlankFalseMark(),
              source,
              false
          );
          CallableVendor.DIFF_MATCH_PATCH.diff_cleanupEfficiency(this.opcodes);
          return this;
      }
      
      public List<Diff> getOpcodes() {
          return this.opcodes;
      }
  }