require("Rook")
library("ROAuth")
library("twitteR")

setwd("C:/Blag/R_Scripts/Important_Scripts")
load("credentials.RData")

Get_Percentages<-function(p_one,p_two,flag){
      if(p_one > p_two){
        if(flag == 0){
          OneFollowPercent<-100
          TwoFollowPercent<-round((p_two * 100) / p_one)
        }else{
          TwoFollowPercent<-100 - (round((p_two * 100) / p_one))
          if(TwoFollowPercent <= 49){
            OneFollowPercent<-50 + TwoFollowPercent
            TwoFollowPercent<-100 - OneFollowPercent
            flag<-0
          }else{
            OneFollowPercent<-50 + TwoFollowPercent
            TwoFollowPercent<-100 - TwoFollowPercent
            TwoFollowPercent<-100 - round((round(TwoFollowPercent * 100) / OneFollowPercent))
            OneFollowPercent<-TwoFollowPercent
            TwoFollowPercent<-100 - OneFollowPercent
            flag<-1
          }
        }
      }
      if(p_one < p_two){
        if(flag == 0){
          OneFollowPercent<-round((p_one * 100) / p_two)
          TwoFollowPercent<-100
        }else{
          OneFollowPercent<-100 - (round((p_one * 100) / p_two))
          if(OneFollowPercent <= 49){
            TwoFollowPercent<-50 + OneFollowPercent
            OneFollowPercent<-100 - TwoFollowPercent
            flag<-0
          }else{
            TwoFollowPercent<-50 + OneFollowPercent
            OneFollowPercent<-100 - OneFollowPercent
            OneFollowPercent<-100 - round((round(OneFollowPercent * 100) / TwoFollowPercent))
            TwoFollowPercent<-OneFollowPercent
            OneFollowPercent<-100 - TwoFollowPercent
            flag<-1
          }
        }
      }
      if(p_one == p_two){
        OneFollowPercent<- 50
        TwoFollowPercent<- 50
      }
      percents<-c(OneFollowPercent,TwoFollowPercent,flag)
      return(percents)
}

newapp<-function(env){
  req<-Rook::Request$new(env)
  res<-Rook::Response$new()
  res$write('<form method="POST">\n')
  res$write('Enter your Twitter username: <input type="text" name="YourUserName">')
  res$write('</BR>')
  res$write('Enter your his/her Twitter username: <input type="text" name="HisHerUserName">')
  res$write('</BR>')
  res$write('<input type="submit" name="Start the Battle!">')
  res$write('</form>')
    
  if (!is.null(req$POST())) {
    YourUserName = paste("@",req$POST()[["YourUserName"]],sep="")
    HisHerUserName = paste("@",req$POST()[["HisHerUserName"]],sep="")
    
    reg<-registerTwitterOAuth(credentials)
    
    GetYourUser<-getUser(YourUserName,cainfo="cacert.pem")
    GetHisHerUser<-getUser(HisHerUserName,cainfo="cacert.pem")
    
    GetYourFollowers<-GetYourUser$followersCount
    GetYourLists<-GetYourUser$listedCount
    GetHisHerFollowers<-GetHisHerUser$followersCount
    GetHisHerLists<-GetHisHerUser$listedCount

    FollowPercents<-Get_Percentages(GetYourFollowers,GetHisHerFollowers,0)
    ListPercents<-Get_Percentages(GetYourLists,GetHisHerLists,0)

    YourPercents<-FollowPercents[1] + ListPercents[1]
    HisHerPercents<-FollowPercents[2] + ListPercents[2]

    FinalPercents<-Get_Percentages(YourPercents,HisHerPercents,1)

    YourPercents<-FinalPercents[1]
    HisHerPercents<-FinalPercents[2]
    if(FinalPercents[3] == 0){
      DiffPercent<-abs(YourPercents - 50)
    }else{
      DiffPercent<-FinalPercents[1]
    }
    
    if(YourPercents > HisHerPercents){
      message<-paste(req$POST()[["YourUserName"]],"is",DiffPercent,
                     " % more important on Twitter than",req$POST()[["HisHerUserName"]],sep=" ")
      res$write(paste('<H1>',message,'</H1>'))   
    }
    if(YourPercents < HisHerPercents){
      message<-paste(req$POST()[["YourUserName"]],"is",DiffPercent,
                     " % less important on Twitter than",req$POST()[["HisHerUserName"]],sep=" ")
      res$write(paste('<H1>',message,'</H1>'))
    }
    if(YourPercents == HisHerPercents){
      message<-paste(req$POST()[["YourUserName"]],
                     "is equally important on Twitter as",req$POST()[["HisHerUserName"]],sep=" ")
      res$write(paste('<H1>',message,'</H1>'))
    }
    
    pieValues<-c(YourPercents,HisHerPercents)
    pieNames<-c(paste(req$POST()[["YourUserName"]],YourPercents,"%"),
                      paste(req$POST()[["HisHerUserName"]],HisHerPercents,"%"))
    
    png("Twitter_Battle.png",width=1000,height=700)
    pie(pieValues,labels=pieNames,main="Twitter Battle")
    dev.off()
    res$write("<div align='center'>")
    res$write(paste("<img src='", server$full_url("pic"), "/", 
                    "Twitter_Battle.png'", "/>", sep = ""))
    
    res$write("</div>")
}
  res$finish()
}

server = Rhttpd$new()
server$add(app = newapp, name = "Twitter_Battle")
server$add(app = File$new("C:/Blag/R_Scripts/Important_Scripts"), name = "pic")
server$start()
server$browse("Twitter_Battle")