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var calendar_obj=null;function checkLogin(){localforage.getItem("logged_in").then((value)=>{if(value!==true){window.location.replace("/index.html");}}).catch((err)=>{console.log(err);});}
function setLoading(state){if(state){$("#loading-bar").removeClass("hidden");}else{$("#loading-bar").addClass("hidden");}}
function hashCode(str){var hash=0;for(var i=0;i<str.length;i++){hash=str.charCodeAt(i)+((hash<<5)-hash);}
return hash;}
function intToRGB(i){var c=(i&0x00FFFFFF).toString(16).toUpperCase();return"00000".substring(0,6-c.length)+c;}
function getForegroundFromBackground(background_color){let color_hex=background_color.replace("#","");let rgb=[parseInt(color_hex.substring(0,2),16),parseInt(color_hex.substring(2,4),16),parseInt(color_hex.substring(4,6),16)];let o=Math.round(((parseInt(rgb[0])*299)+(parseInt(rgb[1])*587)+(parseInt(rgb[2])*114))/1000);if(o>180){return"#000000";}else{return"#ffffff";}}
function getHexColorFromString(str){return"#"+intToRGB(hashCode(str));}
function getDateString(date){let year_str=date.getFullYear();let month_str=date.getMonth()+1
month_str=month_str.toString().padStart(2,"0");let day_str=date.getDate();day_str=day_str.toString().padStart(2,"0");let date_string=year_str+"-"+month_str+"-"+day_str;return date_string;}
function getLastMonday(date_object){if(date_object.getDay()===0){date_object.setDate(date_object.getDate()-6);}else{date_object.setDate(date_object.getDate()-date_object.getDay()+1);}
return date_object;}
async function loadTimetable(date_object,force_refresh=false){setLoading(true);var timetable,username,password;let date_monday=getLastMonday(date_object);let date_string=getDateString(date_monday);let promises_to_run=[localforage.getItem("username").then((value)=>{username=value;}),localforage.getItem("password").then((value)=>{password=value;}),localforage.getItem("timetable").then((value)=>{timetable=value;})];await Promise.all(promises_to_run);if(force_refresh||timetable==null||!(date_string in timetable)){try{let gsecInstance=new gsec();await gsecInstance.login(username,password);gsecInstance.fetchTimetable(date_object).then((value)=>{containsPeriods=false;for(var iteration=0;iteration<=6;iteration++){if(Object.keys(value[iteration]).length>0){containsPeriods=true;}}
if(!containsPeriods){UIAlert(D("noPeriods"));setLoading(false);}else{if(timetable===null){timetable={};}
timetable[date_string]=value;localforage.setItem("timetable",timetable).then(()=>{displayTimetable(value,date_monday);setLoading(false);});}}).catch((err)=>{gsecErrorHandlerUI(err);setLoading(false);});}catch(err){gsecErrorHandlerUI(err);setLoading(false);}}else{displayTimetable(timetable[date_string],date_monday);setLoading(false);}}
function getLessonTimes(lesson_number){const lessonTimes=[["07:10:00","07:55:00"],["08:00:00","08:45:00"],["08:50:00","09:35:00"],["09:40:00","10:25:00"],["10:55:00","11:40:00"],["11:45:00","12:30:00"],["12:35:00","13:20:00"],["13:25:00","14:10:00"],["14:15:00","15:00:00"],["15:05:00","15:50:00"],["15:55:00","16:40:00"],["16:45:00","17:30:00"],["17:35:00","18:20:00"],["18:25:00","19:10:00"]];return lessonTimes[lesson_number];}
function displayTimetable(weekly_timetable,date_object){let transformed_timetable=[];let num_days=Object.keys(weekly_timetable).length;for(let i=0;i<num_days;i++){let date_string=getDateString(date_object);date_object.setDate(date_object.getDate()+1);let daily_timetable=weekly_timetable[i.toString()];Object.keys(daily_timetable).forEach((lesson_number)=>{let lesson=daily_timetable[lesson_number];let lesson_times=getLessonTimes(parseInt(lesson_number));let bg_color=getHexColorFromString(lesson["acronym"]);let fg_color=getForegroundFromBackground(bg_color);let lesson_metadata={subject:lesson["subject"],class:lesson["class"],teacher:lesson["teacher"],classroom:lesson["place"],start:lesson_times[0].substring(0,5),end:lesson_times[1].substring(0,5)}
let lesson_object={id:JSON.stringify(lesson_metadata),title:lesson["acronym"],start:date_string+" "+lesson_times[0],end:date_string+" "+lesson_times[1],backgroundColor:bg_color,textColor:fg_color};transformed_timetable.push(lesson_object);});}
calendar_obj.removeAllEvents();calendar_obj.addEventSource(transformed_timetable);}
function eventClickHandler(eventClickInfo){let lesson_metadata=JSON.parse(eventClickInfo.event.id);let lesson_subject=lesson_metadata["subject"];let lesson_teacher=lesson_metadata["teacher"];let lesson_classroom=lesson_metadata["classroom"];let lesson_class=lesson_metadata["class"];let lesson_duration=lesson_metadata["start"]+" - "+lesson_metadata["end"];$("#lesson-subject").text(lesson_subject);$("#lesson-teacher").text(lesson_teacher);$("#lesson-class").text(lesson_class);$("#lesson-classroom").text(lesson_classroom);$("#lesson-duration").text(lesson_duration);const modal=document.querySelectorAll(".side-modal")[0];M.Sidenav.getInstance(modal).open();}
document.addEventListener("DOMContentLoaded",()=>{checkLogin();let calendarEl=document.getElementById("calendar");calendar_obj=new FullCalendar.Calendar(calendarEl,{plugins:["timeGrid"],eventClick:eventClickHandler,defaultView:"timeGridWeek",contentHeight:"auto",height:"auto",width:"auto",timeGridEventMinHeight:35,nowIndicator:true,firstDay:1,weekends:false,timeFormat:'H(:mm)',minTime:"07:10:00",maxTime:"19:10:00"});calendar_obj.render();loadTimetable(new Date());$(".fc-today-button, .fc-prev-button, .fc-next-button").click(()=>{loadTimetable(calendar_obj.getDate());});$("#refresh-icon").click(()=>{loadTimetable(calendar_obj.getDate(),true);});const menus=document.querySelectorAll(".side-menu");M.Sidenav.init(menus,{edge:"right",draggable:true});const modals=document.querySelectorAll('.side-modal');M.Sidenav.init(modals,{edge:'left',draggable:false});});
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