library(shiny)
library(jsonlite)
library(DT)
library(webshot)
library(knitr)
library(leaflet)
library(mapview)
library(ggplot2)
library(timevis)
library(plotly)



server <- function(input, output, session) {
  set.seed(122)
  
  
  #Continue to data page  
  observeEvent(input$dataSite, {
    
    updateTabItems(session, "tabs",selected = "data")
    
  })
  #DATA PAGE
  
  
  
  #CoConUT Data import 
  output$nut <- renderDataTable({
    inFile <- input$nut
    if (is.null(inFile))
      return(NULL)
    
    #loading CoConUT data
    json_data_coco <- fromJSON(paste(inFile$datapath, sep = ""), flatten = TRUE)
    coconut.df <<- json_data_coco[["data"]]
    
    lastCoConUT <<- inFile$name
    #print("coconut:")
    
    #coconut.df$timestamp <- format(coconut.df$timestamp, format="%d-%B-%Y %H:%M:%S")
    
    
    #print(coconut.df)
    if(is.null(coconut.df$timestamp)){}
    else{unixTime<<-coconut.df$timestamp}
    
    if(is.null(coconut.df$gps.latitude)){}
    else{latitude<<-coconut.df$gps.latitude}
    
    if(is.null(coconut.df$gps.longitude)){}
    else{longitude<<-coconut.df$gps.longitude}
    
    if(is.null(coconut.df$gps.speed)){}
    else{speed<<-coconut.df$gps.speed}
    
    if(is.null(coconut.df$gps.accuracy)){}
    else{gpsAcc<<-coconut.df$gps.accuracy}
    
    if(is.null(coconut.df$light.lux)){}
    else{lux<<-coconut.df$light.lux}
    
    if(is.null(coconut.df$acc.coordinates)){}
    else{accCoord<<-coconut.df$acc.coordinates}
    
    if(is.null(coconut.df$acc.accuracy)){}
    else{accAcc<<-coconut.df$acc.accuracy}
    
    if(is.null(coconut.df$bluetooth.numOfBTDevices)){}
    else{bluetooth<<-coconut.df$bluetooth.numOfBTDevices}
    
    if(is.null(coconut.df$ble.bpm)){}
    else{bleBpm<<-coconut.df$ble.bpm}
    
    if(is.null(coconut.df$ble.bpmlist)){}
    else{bleBpmList<<-coconut.df$ble.bpmlist}
    
    if(is.null(coconut.df$ble.hrv)){}
    else{bleHrv<<-coconut.df$ble.hrv}
    
    if(is.null(coconut.df$ble.hrvlist)){}
    else{bleHrvList<<-coconut.df$ble.hrvlist}
    
    if(is.null(coconut.df$activity.name)){}
    else{activityName<<-coconut.df$activity.name}
    
    if(is.null(coconut.df$activity.confidence)){}
    else{activityConf<<-coconut.df$activity.confidence}
    
    if(is.null(coconut.df$screen.status)){}
    else{screenstatus<<-coconut.df$screen.status}
    
    if(is.null(coconut.df$interaction.touch)){}
    else{touch<<-coconut.df$interaction.touch}
    
    
    
    # setting the table style
    datatable(
      cbind(coconut.df), 
      options = list(
        searching = TRUE,
        autoWidth = TRUE,
        rownames = FALSE,
        scroller = TRUE,
        scrollX = TRUE,
        scrollY = "500px",
        fixedHeader = TRUE,
        class = 'cell-border stripe'
      )
    )
  })
  #last coconut_name
  output$lastLoadedNut<- renderText({
    if (is.null(input$nut))
      return(NULL)
    else lastCoConUT
  })
  
  #CoCoQuest Data import
  output$quest <- renderDataTable({
    inFile <- input$quest
    if (is.null(inFile))
      return(NULL)
    
    #loading CoCoQuest data
    json_data_quest <<- fromJSON(paste(inFile$datapath, sep = ""), flatten = TRUE)
    
    lastCoCoQuest <<- inFile$name
    totalST <<- c(anytime(as.numeric(json_data_quest$startTime)/1000))
    print(json_data_quest)
    
    
    #unix  parsed
    dat <- do.call(rbind, json_data_quest$tasks$data)
    
    endtimes <<- c(dat$endtime)
    
    parsedEndtimes <<- anytime(endtimes/1000)
    #endtimes <<- format(dat$endtime, format="%d-%B-%Y %H:%M:%S")
    print("endtime quest")
    print(parsedEndtimes)
    tasks <- rep(1:length(json_data_quest$tasks$data), sapply(json_data_quest$tasks$data, nrow))
    #questions 
    #print("Questions:", questions)
    together <<- c(tasks, endtimes)
    print("together")
    print(together)
    all <- rbind(together)
    
    #setting the table style
    datatable(
      cbind(tasks, endtimes),
      options = list(
        searching = FALSE,
        rownames = TRUE,
        class = 'cell-border stripe'
      )
    )
  })
  
  #last cocoquest_name
  output$lastLoadedQuest <- renderText({
    if (is.null(input$quest))
      return(NULL)
    else lastCoCoQuest
  })
  
  #cocoQuest Starttime
  output$totalStarttime <- renderText({
    if (is.null(input$quest))
      return(NULL)
    else {
      format(totalST, format="%d-%B-%Y %H:%M:%S")
      
    }
  })
  
  #Continue to view page  
  observeEvent(input$viewSite, {
    
    updateTabItems(session, "tabs",selected = "views")
    
  })
  
  #View PAGE
  
  #Title Input
  output$title <- renderText({ input$title })
  
  #barchart
  output$input_hist_x <- renderUI({
    if (is.null(input$nut))
      return(NULL)
    selectInput("in1", "x-axis:", cbind("unixTime", "longitude", "latitude", "speed", "gps.acc","lux", "light.acc","acc.coordinates", "acc.acc","bluetooth","ble.bpm","ble.bpmlist","ble.hrv","ble.hrvlist","activity.name", "acctivity.confidence","screen.status" ,"touch"),multiple=TRUE, selectize=TRUE) 
  })
  
  output$input_hist_y <- renderUI({
    if (is.null(input$nut))
      return(NULL)
    selectInput("in2", "y-axis:", cbind("unixTime", "longitude", "latitude", "speed", "gps.acc","lux", "light.acc","acc.coordinates", "acc.acc","bluetooth","ble.bpm","ble.bpmlist","ble.hrv","ble.hrvlist","activity.name", "acctivity.confidence","screen.status" ,"touch"),multiple=TRUE, selectize=TRUE) 
  })
  
  
  #Timeline
  
  output$input_time_x <- renderUI({
    if (is.null(input$nut))
      return(NULL)
    selectInput("in3", "x-axis:", cbind("unixTime", "longitude", "latitude", "speed", "gps.acc","lux", "light.acc","acc.coordinates", "acc.acc","bluetooth","ble.bpm","ble.bpmlist","ble.hrv","ble.hrvlist","activity.name", "acctivity.confidence","screen.status" ,"touch"),multiple=TRUE, selectize=TRUE) 
  })
  
  output$input_time_y <- renderUI({
    if (is.null(input$nut))
      return(NULL)
    selectInput("in4", "y-axis:", cbind("unixTime", "longitude", "latitude", "speed", "gps.acc","lux", "light.acc","acc.coordinates", "acc.acc","bluetooth","ble.bpm","ble.bpmlist","ble.hrv","ble.hrvlist","activity.name", "acctivity.confidence","screen.status" ,"touch"),multiple=TRUE, selectize=TRUE) 
  })
  
  
  #Map
  output$input_map <- renderUI({
    if (is.null(input$nut))
      return(NULL)
    selectInput("in5", "Data:", cbind("unixTime", "speed", "gps.acc","lux", "light.acc","acc.coordinates", "acc.acc","bluetooth","ble.bpm","ble.bpmlist","ble.hrv","ble.hrvlist","activity.name", "acctivity.confidence","screen.status" ,"touch"),multiple=TRUE, selectize=TRUE) 
  })
  
  output$input_map_x <- renderUI({
    if (is.null(input$nut))
      return(NULL)
    selectInput("in5", "x-axis:", cbind("unixTime", "longitude", "latitude", "speed", "gps.acc","lux", "light.acc","acc.coordinates", "acc.acc","bluetooth","ble.bpm","ble.bpmlist","ble.hrv","ble.hrvlist","activity.name", "acctivity.confidence","screen.status" ,"touch"),multiple=TRUE, selectize=TRUE) 
  })
  
  output$input_map_y <- renderUI({
    if (is.null(input$nut))
      return(NULL)
    selectInput("in6", "y-axis:", cbind("unixTime", "longitude", "latitude", "speed", "gps.acc","lux", "light.acc","acc.coordinates", "acc.acc","bluetooth","ble.bpm","ble.bpmlist","ble.hrv","ble.hrvlist","activity.name", "acctivity.confidence","screen.status" ,"touch"),multiple=TRUE, selectize=TRUE) 
  })
  
  
  #linechart
  
  output$input_line_x <- renderUI({
    if (is.null(input$nut))
      return(NULL)
    selectInput("in7", "x-axis:", cbind("unixTime", "longitude", "latitude", "speed", "gps.acc","lux", "light.acc","acc.coordinates", "acc.acc","bluetooth","ble.bpm","ble.bpmlist","ble.hrv","ble.hrvlist","activity.name", "acctivity.confidence","screen.status" ,"touch"),multiple=TRUE, selectize=TRUE) 
  })
  
  output$input_line_y <- renderUI({
    if (is.null(input$nut))
      return(NULL)
    selectInput("in8", "y-axis:", cbind("unixTime", "longitude", "latitude", "speed", "gps.acc","lux", "light.acc","acc.coordinates", "acc.acc","bluetooth","ble.bpm","ble.bpmlist","ble.hrv","ble.hrvlist","activity.name", "acctivity.confidence","screen.status" ,"touch"),multiple=TRUE, selectize=TRUE) 
  })
  
  
  #Continue to dashboard page  
  observeEvent(input$dashboardSite, {
    
    updateTabItems(session, "tabs",selected = "dashboard")
    
  })
  plotCounter <<- 0
  #ADD BARCHART BUTTON
  observeEvent(input$check_hist, {
    
    plotCounter<<-plotCounter+1
    print(plotCounter)
    plotname <- paste("plot", plotCounter, sep="")
    print(plotname)
    xplotname<- paste("x",plotname,sep="")
    yplotname<-paste("y",plotname, sep="")
    insertUI(
      
      selector= "#viewpanel", #wo will ichs hinhaben
      ui= box(  title="Barchart",
                status= "warning",
                solidHeader = TRUE,
                collapsible = TRUE,
                
                selectInput(xplotname, "x-axis", choices=colnames(coconut.df)),
                selectInput(yplotname, "y-axis", choices=colnames(coconut.df)),
                
                plotOutput(plotname, height = 250))
    )
    
    
  })
  
  #DASHBOARD  
  #BAR VIEW
  
  local({     
    
    
    
    output[[plotname]] <- renderPlot({
      print(plotname)
      
      data<- structure(list(V1=as.numeric(coconut.df[[input$xplotname]]), 
                            V2=as.numeric(coconut.df[[input$yplotname]])),
                       .Names=c("V1","V2"), row.names=c(NA,6L), class = "data.frame")
      #Neues Plot
      barplot(data$V1,data$V2, 
              ylab= input$yplotname,
              xlab=input$xplotname)
      
    })
  })
  
  ## ALTES PLOT
  #a=1
  
  #for(a in 1:length(coconut.df$bluetooth.numOfBTDevices)){
  
  #g <-geom_bar(mapping = NULL, data = , stat = "count",
  #             position = "stack", width = NULL, binwidth = NULL, na.rm = FALSE,
  #             show.legend = NA, inherit.aes = TRUE)
  
  #g <- ggplot(coconut.df, aes("timestamp","bluetooth"))
  #g + geom_bar()
  # a=a+1}
  
  #g
  #hist(bluetooth)
  
  
  
  
  #TIMELINE
  output$time_box <- renderUI({
    if(input$check_time)
      box(  title="Timeline",
            status= "warning",
            solidHeader = TRUE,
            collapsible = TRUE,
            timevisOutput("time", height = 250)
      )
  })
  
  #TODO: Timelineview
  output$time <- renderTimevis({
    print("TIME wird aufgerufen")
    
    print("Length:")
    print(length(parsedEndtimes))
    print("combined")
    print( c(anytime(totalST), head(parsedEndtimes, -1)))
    print("endtimes")
    print(parsedEndtimes)
    
    
    data <-  data.frame(
      id      = 1:length(parsedEndtimes),
      content= c(1:length(parsedEndtimes)),
      start   = c(anytime(totalST), head(parsedEndtimes, -1)),
      end     = parsedEndtimes
    )
    timevis(data)
    
  })
  
  output$texttimeline <- renderText({
    "Check Timeline for getting a Timeline about CoCoQuest Tasks and Questions."
  })
  
  
  
  #linechart
  output$line_box <- renderUI({
    if(input$check_line)
      box(  title="Linechart",
            status= "warning",
            solidHeader = TRUE,
            collapsible = TRUE,
            selectInput("line_x", "x-axis", choices=colnames(coconut.df)),
            selectInput("line_y", "y-axis", choices=colnames(coconut.df)),
            #add_tooltip(data_tooltip, "hover"),
            plotOutput("line", height = 250))
  })
  
  #TODO: linechart View
  output$line <- renderPlot({
    print("LINE wird aufgerufen")
    data<- structure(list(V1=as.numeric(coconut.df[[input$line_x]]), 
                          V2=as.numeric(coconut.df[[input$line_y]])),
                     .Names=c("V1","V2"), row.names=c(NA,6L), class = "data.frame")
    plot(data$V1,data$V2, type="l", ylab=input$line_y, xlab=input$line_x)
    
  })
  
  # Scatterplot
  output$scat_box <- renderUI({
    if(input$check_scat)
      box(  title="Scatterplot",
            status= "warning",
            solidHeader = TRUE,
            collapsible = TRUE,
            selectInput("scat_x", "x-axis", choices=colnames(coconut.df)),
            selectInput("scat_y", "y-axis", choices=colnames(coconut.df)),
            plotOutput("scat", height = 250))
  })
  
  #TODO: Scatterplot View
  output$scat <- renderPlot({
    data<- structure(list(V1=as.numeric(coconut.df[[input$scat_x]]), 
                          V2=as.numeric(coconut.df[[input$scat_y]])),
                     .Names=c("V1","V2"), row.names=c(NA,6L), class = "data.frame")
    print("SCAT wird aufgerufen")
    
    plot(data$V1,data$V2, type="p", xlab=input$scat_x, ylab=input$scat_y )
  })
  
  # Boxplot
  output$box_box <- renderUI({
    if(input$check_box)
      box(  title="Boxplot",
            status= "warning",
            solidHeader = TRUE,
            collapsible = TRUE,
            selectInput("box_x", "x-axis", choices=colnames(coconut.df)),
            plotOutput("box", height = 250))
  })
  
  #TODO: Boxplot View
  output$box <- renderPlot({
    print("BOX wird aufgerufen")
    data<- structure(list(V1=as.numeric(coconut.df[[input$box_x]])),
                     .Names=c("V1"), row.names=c(NA,6L), class = "data.frame")
    
    boxplot(data$V1, type="box", xlab=input$box_x )
  })
  
  #MAP
  output$map_box <- renderUI({
    if(input$check_map)
      box(  title="Map",
            status= "warning",
            solidHeader = TRUE,
            collapsible = TRUE,
            selectInput("map_data", "data", choices=colnames(coconut.df)),
            leafletOutput("map", height = 250))
  })
  
  # MAP VIEW 
  output$map <- renderLeaflet({
    print("MAP wird aufgerufen")
    data <- as.numeric(coconut.df[[input$map_data]])
    max_data<<- max(data)
    
    c<-1
    for(c in 1:length(data)){
      data[c]<-(data[c]/max_data)*10
    }
    
    colorData <-
      cut(
        data,
        c(0, 2, 5, 7, 10),
        include.lowest = T,
        lables = c('<2', '<5', '<7', '<10')
      )
    print("colorData")
    print(colorData)
    
    colorGrad <- colorFactor('RdYlGn', colorData) 
    
    print("colorGrad")
    print(colorGrad(colorData))
    
    
    m <- leaflet()
    x=1
    m <- addTiles(m)

    m<-addCircleMarkers(m,lng=as.numeric(coconut.df$gps.longitude), lat=as.numeric(coconut.df$gps.latitude), radius = data, color = colorGrad(colorData)) #addPolylines does not work
    m<-addLegend(m, 'bottomright', pal=colorGrad, values=colorData, title=' ',opacity=1)
    m
  })
  
  
  
  # TOOLTIP
  data_tooltip <- function(x){
    if(is.null(x)) return(NULL)
    if(is.null(x$ID)) return(NULL)
    paste0(coconut.df[[input$line_x]])
  }
  
  #DownloadButton
  #TODO: MAKE IT WORK!
  observeEvent(input$screenshot,{
    #if(input$check_line|input$check_time|input$check_map|input$check_hist)
    #disable("screenshot")
    #webshot::install_phantomjs()
    
    cdat <<- session$clientData
    url <- paste0(cdat$url_hostname,":", cdat$url_port,"/")
    print(url)
    
    #URL <- "http://rstudio.github.io/leaflet/"
    #appshot("cocoVisR/", file = "dashboard.png", port = getOption("shiny.port"), envvars = NULL)
    #webshot(url,delay = 5.0)
    #knit("dashboard.png")
    #port <- cdat$url_port
    #mapshot(m, file="~/Rplot.png")
    
    #webshot(url, "dashboard.png", delay = 20.0) # does NOT WORK 
    #appdir <- system.file("examples", "01_hello", package="shiny")
    #print("appdir")
    #print(appdir)
    #appshot(appdir, "01_hello.png")
    
    #leaflet.print(m)
    
    
    
    
    
    
    
  })
  # url <- paste0(cdat$url_protocol,"//",cdat$url_hostname,":", cdat$url_port, cdat$url_pathname,cdat$url_search)
  #output$downButton <- downloadHandler(
  # filename="dashboard.png",
  #content=function(file){
  # observeEvent(input$downButton, {
  #appshot("cocoVisR/dashboard", file = "dashboard.png", port = getOption("shiny.port"), envvars = NULL)
  
  #}) 
  #}
  #)
  
  
  
  
  
  
  #SOME STUFF  
  
  
  #histdata <- rnorm(500)
  
  #output$plot1 <- renderPlot({
  #data <- histdata[seq_len(input$slider)]
  #hist(data)
  #})
  
  ##MAP 
  
  #m <- leaflet()
  #m <- addTiles(m)
  #x=1
  #for(x in 1:2019){
  #m <- addMarkers(m,lng=longitude[x], lat=latitude[x]) #addPolylines does not work
  #x=x+1}
  #m
  #}
}