natalie_code/program3/buildTree.cxx

#include <cstdio>
#include <iostream>
#include <string>
#include <fstream>
#include <sstream>

#include "json.hpp"
#include "AVLCommands.h"

int main(int argc, char** argv) {
  // read JSON file and store in jsonObject
  std::ifstream file;
  file.open(argv[1]);
  nlohmann::json jsonObject;
  // Store the contents filename into jsonObject
  if (file.is_open()) {
    file >> jsonObject;
  }

  std::string AVLOp;          // heap operation to iterate
  std::string currOp;         // operation name
  std::string avlOutput;      // outputted AVL tree
  int key;                    // node key given for each operation

  // construct AVL tree class
  AVLCommands avl;

  // need to iterate through each operation
  for (auto itr = jsonObject.begin(); itr != jsonObject.end(); ++itr) {
    AVLOp = itr.key();

    if (AVLOp != "metadata") {
      // get the operation name to be performed
      currOp = jsonObject[AVLOp]["operation"];

      // perform correct operation gotten from JSON Op object
      if (currOp == "Insert") {
        key = jsonObject[AVLOp]["key"];
        avl.Insert(key);

      } else if (currOp == "Delete") {
        key = jsonObject[AVLOp]["key"];
        avl.Delete(key);

      } else if (currOp == "DeleteMin") {
        avl.DeleteMin();

      }
    }
  }

  // print tree using JSON formatting
  avlOutput = avl.JSON();
  std::cout << avlOutput << std::endl;
  // clean up memory
  file.close();
  return 0;
}