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Qt World Summit Conference App

 import QtQuick
 import "../details"

 Item {
   function prepareData(eventData) {
     let result = { speakers: {}, talks: {}, schedule: [], tracks: [] }

     result.talks = prepareTalks(eventData)
     result.speakers = prepareSpeakers(eventData, result.talks)
     result.schedule = prepareSchedule(result.talks)
     result.tracks = prepareTracks(result.talks)
     return result
   }

   function speakerTalksIds(speakerId, talks) {
     var speakerTalks = []
     if (talks !== undefined) {
       for (var talkId in talks) {
         if (talks[talkId]["speakers"] !== undefined) {
           if (talks[talkId]["speakers"].includes(speakerId)) {
             speakerTalks.push(talks[talkId]["id"])
           }
         }
       }
     }
     return speakerTalks
   }

   // prepareSpeakers - build speaker model for display
   function prepareSpeakers(data, talks) {
     var preparedSpeakers = {}
     for(var day in data.days) {
       for(var tracks in data.days[day]["tracks"]) {
         for(var events in data.days[day]["tracks"][tracks]["events"]) {
           for(var speakers in data.days[day]["tracks"][tracks]["events"][events]["speakers"]) {
             var speaker = data.days[day]["tracks"][tracks]["events"][events]["speakers"][speakers]
             var preparedSpeaker = speaker
             if (speaker["speaker_name"] === undefined) {
               continue
             }

             var speakerName = speaker["speaker_name"] //TODO: remove comma/whitespace etc.

             preparedSpeaker["id"] = speakerName
             preparedSpeaker["full_name"] = speakerName.split(",")[0]
             preparedSpeaker["first_name"] = preparedSpeaker["full_name"].split(" ")[0]
             preparedSpeaker["last_name"] = preparedSpeaker["full_name"].split(" ")[1]
             preparedSpeaker["title"] = speaker["occupation"]
             //preparedSpeaker["abstract"] = speaker["abstract"]
             preparedSpeaker["avatar"] = speaker["speaker_image"]["src"]
             preparedSpeaker["firstLetter"] = preparedSpeaker["first_name"].charAt(0).toUpperCase()
             preparedSpeaker["talks"] = speakerTalksIds(preparedSpeaker["id"], talks)

             preparedSpeakers[preparedSpeaker["id"]] = preparedSpeaker
           }
         }
       }
     }
     return preparedSpeakers;
   }

   // prepareTalks - build talks model for display
   function prepareTalks(data) {
     var preparedTalks = {}
     for(var day in data.days) {
       for(var tracks in data.days[day]["tracks"]) {
         for(var events in data.days[day]["tracks"][tracks]["events"]) {
           var event = data.days[day]["tracks"][tracks]["events"][events]

           // format start and end time
           let startDate = new Date(event["start_time"])
           let endDate = new Date(event["end_time"])
           event.start = startDate.toISOString()
           event.end = endDate.toISOString()

           // build talks model
           var preparedTalk = {}
           preparedTalk["id"] = event["event_title"]+"_"+event["start_time"] // Note: BREAK can occur multiple times, thus also include start_time
           preparedTalk["title"] = event["event_title"].replace(/^"+|^“+|"+$|”+$/g, '');
           preparedTalk["description"] = event["event_description"]
           preparedTalk["abstract"] = event["event_description"]

           if(event["event_color"] === "moss") {
             preparedTalk["color"] = "#878C7D"
             preparedTalk["tracks"] = "General Events"
             if(preparedTalk["description"] === "" || preparedTalk["description"] === undefined || preparedTalk["title"] === "Afterwork & Party") {
               preparedTalk["room"] = "Level B"
             }
             else {
               preparedTalk["room"] = "C01"
             }
           }
           else if(event["event_color"] === "pine") {
             preparedTalk["color"] = eventDetails.lemonColor
             preparedTalk["tracks"] = "Development Minds"
             preparedTalk["room"] = ["B05", "B07"]
           }
           else if(event["event_color"] === "neon") {
             preparedTalk["color"] = eventDetails.neonColor
             preparedTalk["tracks"] = "Qt Explorer"
             preparedTalk["room"] = ["B08", "B09"]
           }
           else if(event["event_color"] === "violet") {
             preparedTalk["color"] = eventDetails.violetColor
             preparedTalk["tracks"] = "Assure Quality"
             preparedTalk["room"] = ["A03", "A04"]
           }
           else if(event["event_color"] === "mandarin") {
             preparedTalk["color"] = eventDetails.mandarinColor
             preparedTalk["tracks"] = "HMI Creation / Design"
             preparedTalk["room"] = ["A05", "A06"]
           }
           else if(event["event_color"] === "blue") {
             preparedTalk["color"] = eventDetails.blueColor
             preparedTalk["tracks"] = "Academy"
             preparedTalk["room"] = "C01"
           }
           else if(event["event_color"] === "lemon") {
             preparedTalk["color"] = "#99A500"
             preparedTalk["tracks"] = "Keynotes & Customer Cases"
             preparedTalk["room"] = "C01"
           }

           preparedTalk["day"] = (event.start).substr(0, 10) // copy and make substring of year/month/day
           preparedTalk["start"] = calculateTimeAtEvent(event.start) // hour/minutes only
           preparedTalk["datetime"] = startDate
           preparedTalk["enddatetime"] = endDate
           preparedTalk["weekday"] = getWeekDay(preparedTalk["datetime"],  true)
           preparedTalk["date"] = preparedTalk.weekday
           preparedTalk["end"] = calculateTimeAtEvent(event.end) // hour/minutes only

           preparedTalk["speakers"] = []
           for(var speaker in event["speakers"]) {
             if ("speaker_name" in event["speakers"][speaker] && event["speakers"][speaker]["speaker_name"] !== undefined) {
               preparedTalk["speakers"].push(event["speakers"][speaker]["speaker_name"])
             }
           }

           preparedTalks[preparedTalk.id] = preparedTalk
         }
       }
     }
     return preparedTalks
   }

   // prepareSchedule - package schedule data in array with conference days (for tabs)
   function prepareSchedule(talks) {
     var model = {}

     for(var talkId in talks) {
       var talk = talks[talkId]

       var dateValue = talk.date
       if (!model[dateValue]) {
         var dayItem = {}
         dayItem["day"] = talk.day
         dayItem["weekday"] = talk.weekday
         dayItem["talks"] = []

         model[dateValue] = dayItem
       }

       model[dateValue].talks.push(talk.id)
     }

     return Object.keys(model).sort().map(dateValue => model[dateValue])
   }

   function prepareTracks(talks) {
     let tracks = {}
     for(var talkId in talks) {
       let event = talks[talkId]

 //       build tracks model
       if(event["color"] !== undefined) {
         let trackName
         if(event["color"] === "#878C7D") {
           trackName = "General Events"
         }
         else if(event["color"] === eventDetails.lemonColor) {
           trackName = "Development Minds"
         }
         else if(event["color"] === eventDetails.neonColor) {
           trackName = "Qt Explorer"
         }
         else if(event["color"] === eventDetails.violetColor) {
           trackName = "Assure Quality"
         }
         else if(event["color"] === eventDetails.mandarinColor) {
           trackName = "HMI Creation / Design"
         }
         else if(event["color"] === eventDetails.blueColor) {
           trackName = "Academy"
         }
         else if(event["color"] === "#99A500") {
           trackName = "Keynotes & Customer Cases"
         }
         if(!tracks[trackName]) {
           tracks[trackName] = {
             "title": trackName,
             "color": event["color"],
             "talks": []
           }
         }
         tracks[trackName].talks.push(event.id)
       }
     }
     return Object.keys(tracks).map(trackId => tracks[trackId])
   }

   // format2DigitTime - adds leading zero to time (hour, minute) if required
   function format2DigitTime(time) {
     return (("" + time).length < 2) ? "0" + time : time
   }

   function getWeekDay(datetime, longFormat = false) {
     var days = ['Sun','Mon','Tue','Wed','Thu','Fri','Sat'];
     if(longFormat) {
       days = ['Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday'];
     }

     return days[ datetime.getUTCDay() ]
   }

   function calculateTimeAtEvent(startDateStr) {
     let hour = Number(startDateStr.substr(11,2)) + eventDetails.timeZoneOffset
     let minuteStr = startDateStr.substr(14,2)