<?php

require './libs/Slim/Slim.php';

\Slim\Slim:: registerAutoloader();

$app= new \Slim\Slim();

/** Echoing json response to client */

function echoRespnse($status_code, $response) {

}

$app->get('/active', function() use ($app){

//get the request

$req = $app->request();

$screen_name = $req->get('twitter_id');

$time_span=strtolower($req->get('time_span'));

//build signature

$oauth_hash = '';

$oauth_hash .= 'count=200&';

$oauth_hash .= 'oauth_consumer_key=DwqmZvelWwN6DERiteqUuFbip&';

$oauth_hash .= 'oauth_nonce=' . time() . '&';

$oauth_hash .= 'oauth_signature_method=HMAC-SHA1&';

$oauth_hash .= 'oauth_timestamp=' . time() . '&';

$oauth_hash .= 'oauth_token=2860541348-EH8MJm85ffjfEtRpltqHnkNudlmmD2UMS32zP2U&';

$oauth_hash .= 'oauth_version=1.0&';

$oauth_hash .= 'screen_name='. $screen_name ;

$base = '';

$base .= 'GET';

$base .= '&';

$base .= rawurlencode('https://api.twitter.com/1.1/statuses/user_timeline.json');

$base .= '&';

$base .= rawurlencode($oauth_hash);

$key = '';

$key .= rawurlencode('g5YF0YUHjELSKAwoaCYTroBMVCwzdbTyQhGTQdvnB4sIVvhBhq');

$key .= '&';

$key .= rawurlencode('8pzJoo9ZaJVGU6ZFCnxJR43WSK55A1Grzg655FpGffm7R');

$signature = base64_encode(hash_hmac('sha1', $base, $key, true));

$signature = rawurlencode($signature);

//build cUrl header

$oauth_header = '';

$oauth_header .= 'count="200", ';

$oauth_header .= 'oauth_consumer_key="DwqmZvelWwN6DERiteqUuFbip", ';

$oauth_header .= 'oauth_nonce="' . time() . '", ';

$oauth_header .= 'oauth_signature="' . $signature . '", ';

$oauth_header .= 'oauth_signature_method="HMAC-SHA1", ';

$oauth_header .= 'oauth_timestamp="' . time() . '", ';

$oauth_header .= 'oauth_token="2860541348-EH8MJm85ffjfEtRpltqHnkNudlmmD2UMS32zP2U", ';

$oauth_header .= 'oauth_version="1.0", ';

$oauth_header .= 'screen_name="' . $screen_name . '"';

$curl_header = array("Authorization: Oauth {$oauth_header}", 'Expect:');

// hitting URL

$curl_request = curl_init();

curl_setopt($curl_request, CURLOPT_HTTPHEADER, $curl_header);

curl_setopt($curl_request, CURLOPT_HEADER, false);

curl_setopt($curl_request, CURLOPT_URL, 'https://api.twitter.com/1.1/statuses/user_timeline.json?count=200&screen_name=' .$screen_name . "");

curl_setopt($curl_request, CURLOPT_RETURNTRANSFER, true);

curl_setopt($curl_request, CURLOPT_SSL_VERIFYPEER, false);

$json = curl_exec($curl_request);

curl_close($curl_request);

$data = json_decode($json);

$size_data=count($data);

//echo $size_data;

$response = [];

//parse the data to get active hour

if($time_span == "day"){

$tweetArray=[];

$maxCount=0;

$daycount=array(0,0,0,0,0,0,0);

//$tweetArray=$data[0]->created_at;

// echo $tweetArray;

for($i=0;$i<$size_data;$i++){

$temp= $data[$i]->created_at;

$tweetArray["$i"]=substr($temp,0,3);

//echo $tweetArray[$i];

if($tweetArray["$i"]=="Sun")

$daycount[0]++;

else if($tweetArray["$i"]=="Mon")

$daycount[1]++;

else if($tweetArray["$i"]=="Tue")

$daycount[2]++;

else if($tweetArray["$i"]=="Wed")

$daycount[3]++;

else if($tweetArray["$i"]=="Thu")

$daycount[4]++;

else if($tweetArray["$i"]=="Fri")

$daycount[5]++;

else if($tweetArray["$i"]=="Sat")

$daycount[6]++;

}

$maxCount=max($daycount);

//echo $maxCount;

for($i=0;$i<7;$i++){

if($daycount[$i]==$maxCount){

$response["$i"] = $maxCount;

break;

}

}

}

else if($time_span == "hour"){

$tweetArray=[];

$maxCount=0;

$hourCount=array_fill(0,24,null);

for($i=0;$i<$size_data;$i++){

$temp= $data[$i]->created_at;

$temp = substr($temp,10,10);

$tweetArray["$i"]=intval(substr($temp,0,3));

//echo $tweetArray[$i]." ,";

//assigning frequency of tweets per hour

for($j=0;$j<24;$j++){

if($tweetArray["$i"]==$j){

$hourCount[$j]++;

}

}

}

$maxCount=max($hourCount);

//echo $maxCount;

//finding maximum frequency

for($k=0;$k<24;$k++){

if($hourCount[$k]==$maxCount){

$response["$k"] = $maxCount;

break;

}

}

}

//$response["answer"]= $data;

//echo $data;

//echo "I am here";

echoRespnse(200, $response);

});

$app->get('/hashtag', function() use ($app){

//get the request

$req = $app->request();

$screen_name = $req->get('twitter_id');

$n=$req->get('n');

//build signature

$oauth_hash = '';

$oauth_hash .= 'count=200&';

$oauth_hash .= 'oauth_consumer_key=DwqmZvelWwN6DERiteqUuFbip&';

$oauth_hash .= 'oauth_nonce=' . time() . '&';

$oauth_hash .= 'oauth_signature_method=HMAC-SHA1&';

$oauth_hash .= 'oauth_timestamp=' . time() . '&';

$oauth_hash .= 'oauth_token=2860541348-EH8MJm85ffjfEtRpltqHnkNudlmmD2UMS32zP2U&';

$oauth_hash .= 'oauth_version=1.0&';

$oauth_hash .= 'screen_name='. $screen_name ;

$base = '';

$base .= 'GET';

$base .= '&';

$base .= rawurlencode('https://api.twitter.com/1.1/statuses/user_timeline.json');

$base .= '&';

$base .= rawurlencode($oauth_hash);

$key = '';

$key .= rawurlencode('g5YF0YUHjELSKAwoaCYTroBMVCwzdbTyQhGTQdvnB4sIVvhBhq');

$key .= '&';

$key .= rawurlencode('8pzJoo9ZaJVGU6ZFCnxJR43WSK55A1Grzg655FpGffm7R');

$signature = base64_encode(hash_hmac('sha1', $base, $key, true));

$signature = rawurlencode($signature);

//build cUrl header

$oauth_header = '';

$oauth_header .= 'count="200", ';

$oauth_header .= 'oauth_consumer_key="DwqmZvelWwN6DERiteqUuFbip", ';

$oauth_header .= 'oauth_nonce="' . time() . '", ';

$oauth_header .= 'oauth_signature="' . $signature . '", ';

$oauth_header .= 'oauth_signature_method="HMAC-SHA1", ';

$oauth_header .= 'oauth_timestamp="' . time() . '", ';

$oauth_header .= 'oauth_token="2860541348-EH8MJm85ffjfEtRpltqHnkNudlmmD2UMS32zP2U", ';

$oauth_header .= 'oauth_version="1.0", ';

$oauth_header .= 'screen_name="' . $screen_name . '"';

$curl_header = array("Authorization: Oauth {$oauth_header}", 'Expect:');

// hitting URL

$curl_request = curl_init();

curl_setopt($curl_request, CURLOPT_HTTPHEADER, $curl_header);

curl_setopt($curl_request, CURLOPT_HEADER, false);

curl_setopt($curl_request, CURLOPT_URL, 'https://api.twitter.com/1.1/statuses/user_timeline.json?count=200&screen_name=' .$screen_name . "");

curl_setopt($curl_request, CURLOPT_RETURNTRANSFER, true);

curl_setopt($curl_request, CURLOPT_SSL_VERIFYPEER, false);

$json = curl_exec($curl_request);

curl_close($curl_request);

$data = json_decode($json);

$size_data=count($data);

$temp=[];

$response = [];

$resultArray=[];

for($i=0;$i<$size_data;$i++){

$countTag=count($data[$i]->entities->hashtags);

for($j=0;$j<$countTag;$j++)

$temp[]= $data[$i]->entities->hashtags[$j]->text;

//echo $temp;

}

for($i=0;$i<count($temp);$i++){

$count=1;

//echo $temp[$i];

for($j=0;$j<$i;$j++){

if($temp[$j]==$temp[$i]){

//$a=$temp[$j];

$count++;

}

}

$response["$temp[$i]"]=$count;

}

asort($response);

$arrayResult=array_reverse($response);

$arrayResult= array_slice($arrayResult, 0, $n);

//for($i=count($response);$i>count($response)-$n;$i--)

// $resultArray = $resultArray.sort(function (a, b) {

// return a.val.localeCompare( b.val );

// });

// $response=json_decode($resultArray);

//$resultArray = array_slice($response, 0, $n);

// foreach ($response as $key => $value) {

// echo "$key: $value\n";

echoRespnse(200, $arrayResult);

});

$app->get('/authority', function() use ($app){

//get the request

$req = $app->request();

$screen_name = $req->get('twitter_id');

$tweet=$req->get('tweet');

//build signature

$oauth_hash = '';

$oauth_hash .= 'count=200&';

$oauth_hash .= 'oauth_consumer_key=DwqmZvelWwN6DERiteqUuFbip&';

$oauth_hash .= 'oauth_nonce=' . time() . '&';

$oauth_hash .= 'oauth_signature_method=HMAC-SHA1&';

$oauth_hash .= 'oauth_timestamp=' . time() . '&';

$oauth_hash .= 'oauth_token=2860541348-EH8MJm85ffjfEtRpltqHnkNudlmmD2UMS32zP2U&';

$oauth_hash .= 'oauth_version=1.0&';

$oauth_hash .= 'screen_name='. $screen_name ;

$base = '';

$base .= 'GET';

$base .= '&';

$base .= rawurlencode('https://api.twitter.com/1.1/statuses/user_timeline.json');

$base .= '&';

$base .= rawurlencode($oauth_hash);

$key = '';

$key .= rawurlencode('g5YF0YUHjELSKAwoaCYTroBMVCwzdbTyQhGTQdvnB4sIVvhBhq');

$key .= '&';

$key .= rawurlencode('8pzJoo9ZaJVGU6ZFCnxJR43WSK55A1Grzg655FpGffm7R');

$signature = base64_encode(hash_hmac('sha1', $base, $key, true));

$signature = rawurlencode($signature);

//build cUrl header

$oauth_header = '';

$oauth_header .= 'count="200", ';

$oauth_header .= 'oauth_consumer_key="DwqmZvelWwN6DERiteqUuFbip", ';

$oauth_header .= 'oauth_nonce="' . time() . '", ';

$oauth_header .= 'oauth_signature="' . $signature . '", ';

$oauth_header .= 'oauth_signature_method="HMAC-SHA1", ';

$oauth_header .= 'oauth_timestamp="' . time() . '", ';

$oauth_header .= 'oauth_token="2860541348-EH8MJm85ffjfEtRpltqHnkNudlmmD2UMS32zP2U", ';

$oauth_header .= 'oauth_version="1.0", ';

$oauth_header .= 'screen_name="' . $screen_name . '"';

$curl_header = array("Authorization: Oauth {$oauth_header}", 'Expect:');

// hitting URL

$curl_request = curl_init();

curl_setopt($curl_request, CURLOPT_HTTPHEADER, $curl_header);

curl_setopt($curl_request, CURLOPT_HEADER, false);

curl_setopt($curl_request, CURLOPT_URL, 'https://api.twitter.com/1.1/statuses/user_timeline.json?count=200&screen_name=' .$screen_name . "");

curl_setopt($curl_request, CURLOPT_RETURNTRANSFER, true);

curl_setopt($curl_request, CURLOPT_SSL_VERIFYPEER, false);

$json = curl_exec($curl_request);

curl_close($curl_request);

$data = json_decode($json);

$size_data=count($data);

$temp="";

$proOfWordsInTweet=[];

$proOfWordsInText=[];

$probability=0;

//fetching text from timeline

for($i=0;$i<$size_data;$i++){

$temp= $temp . $data[$i]->text;

//$temp = preg_replace('/[^A-Za-z0-9\-]/', '', $temp); // Removes special chars.

//echo $temp;

}

//counting frequency of words in timeline

$wordsInTimeline = str_word_count($temp, 1);

$frequencyInText = array_count_values($wordsInTimeline);

//counting frequency of words in tweet

$wordsInTweet= str_word_count($tweet,1);

$frequencyInTweet= array_count_values($wordsInTweet);

//counting probability of each words in given tweet, works

foreach($frequencyInTweet as $key =>$value){

$proOfWordsInTweet[$key] = $value/count($frequencyInTweet);

}

foreach($frequencyInTweet as $key =>$value){

$tmp=$key;

foreach($frequencyInText as $key => $value){

if($key == $tmp){

//if the word is in history, then calculate probability of that word in timeline history

$proOfWordsInText[$key] = $frequencyInText[$key]/count($frequencyInText);

//sum up that probability

$probability = $probability+($proOfWordsInTweet[$tmp]*$proOfWordsInText[$key]);

}

}

}

//form the response

$response["twitter_id"]= $screen_name;

$response["tweet"]=$tweet;

$response["probability"]=$probability;

echoRespnse(200, $response);

});

$app->run();