console.log("Hello!");

var msg = "Hello, World!";
console.log(msg);

function logIt(output) {
    console.log(output);
}
logIt(msg);

console.log("Reuse of logIT")
logIt("Hello, Students!");
logIt(2022)

function logItType(output) {
    console.log(typeof output, ";", output);
}
console.log("Looking at dynamic nature of types in JavaScript")
logItType("hello"); 
logItType(2020);    
logItType([1, 2, 3]);

var students = [ 
    new Person("Anthony", "tonyhieu", 2022),
    new Person("Bria", "B-G101", 2023),
    new Person("Allie", "xiaoa0", 2023),
    new Person("Tigran", "Tigran7", 2023),
    new Person("Rebecca", "Rebecca-123", 2023),
    new Person("Vidhi", "unknown", 2024)
];


function Classroom(teacher, students){ 
    
    teacher.setRole("Teacher");
    this.teacher = teacher;
    this.classroom = [teacher];
    
    this.students = students;
    this.students.forEach(student => { student.setRole("Student"); this.classroom.push(student); });
    
    this.json = [];
    this.classroom.forEach(person => this.json.push(person.toJSON()));
}


compsci = new Classroom(teacher, students);


logItType(compsci.classroom);  
logItType(compsci.classroom[0].name); 
logItType(compsci.json[0]); 
logItType(JSON.parse(compsci.json[0]));

// define an HTML conversion "method" associated with Classroom
Classroom.prototype._toHtml = function() {
    // HTML Style is build using inline structure
    var style = (
      "display:inline-block;" +
      "background:black;" +
      "border: 2px solid grey;" +
      "box-shadow: 0.8em 0.4em 0.4em grey;"
    );
  
    // HTML Body of Table is build as a series of concatenations (+=)
    var body = "";
    // Heading for Array Columns
    body += "<tr>";
    body += "<th><mark>" + "Period" + "</mark></th>";
    body += "<th><mark>" + "Class Name" + "</mark></th>";
    body += "<th><mark>" + "Room #" + "</mark></th>";
    body += "</tr>";
    // Data of Array, iterate through each row of compsci.classroom 
    for (var row of compsci.classroom) {
      // tr for each row, a new line
      body += "<tr>";
      // td for each column of data
      body += "<td>" + row.name + "</td>";
      body += "<td>" + row.ghID + "</td>";
      body += "<td>" + row.classOf + "</td>";
      body += "<td>" + row.role + "</td>";
      // tr to end line
      body += "<tr>";
    }
  
     // Build and HTML fragment of div, table, table body
    return (
      "<div style='" + style + "'>" +
        "<table>" +
          body +
        "</table>" +
      "</div>"
    );
  
  };
  
  // IJavaScript HTML processor receive parameter of defined HTML fragment
  $$.html(compsci._toHtml());