<?php require 'sql-models.php'; ?>
<?php
function getNumberOfCharInstanceInString($input_char, $input_str) {
	$num_of_chars = 0;
	$input_str_chars = str_split($input_str, 1);
	foreach($input_str_chars as $str_char)  {
		if($str_char == $input_char) {
			$num_of_chars+=1;
		}
	}
	return $num_of_chars;
}
/*
	1.get user input
	2.make sure user input is correct 5 alpha chars	
	3.check if it's a word to prevent random guessing letters aeiou
	4.check if correct or if incorrect check 
	5.store attempt
	6.return incorrect or correct?

*/

//1. get user input
$input_text = "";
//lynx only accepts GET 
//lynx press x to submit form NOCACHE
if ( filter_input(INPUT_POST, "input_text") !== null) {
	$input_text = filter_input(INPUT_POST, "input_text");
} elseif( filter_input(INPUT_GET, "input_text") !== null ) {
	$input_text = filter_input(INPUT_GET, "input_text");  
}	
$input_text=strtolower($input_text);

//2.make sure user input is correct 5 alpha chars	
//only Allow A-z 0-9 space period [period has to be escaped, since string double escaped \ backslash
//$pattern = "/[^a-z0-9 \\.]/i";   
$pattern = "/[^a-z]/i"; 
$input_text_filtered = preg_replace($pattern, "" ,$input_text); // Outputs 4

//must call to access session variables | session cookie server vs actual cookie on client
$three_years = 60 * 60 * 24 * 365 * 3; //max int = 2147483647
										  //            22896000
//session_start(['cookie_lifetime' => $three_years,]);
		
$cookie_username = "";		
if(isset($_COOKIE['username'])) {
	$cookie_username=$_COOKIE['username'];


	//3.check if it's a word to prevent random guessing letters aeiou
	$word_found = db_does_word_exists($input_text_filtered);
	$user_info = db_get_all_account_info($cookie_username);
	
	if($word_found == true && count($user_info) > 0) {
		$correct_word = $user_info[0]['word_text'];
		$correct_word_chars = str_split($correct_word,1);
		//split input text into characterss
		$input_chars = str_split($input_text_filtered, 1);


		//user input cat, match, string 
		//word spurred, 7 characters, so pad string 7 characters
		
		//need to pad str str_pad($input, 10)

		//correct word == comma
		//guesses = omar_ , crane,
		//highlite correct position and letter green
		
		//count number of letters
		//comma vs apple vs mocko
		//c1,o1,m1,m2,a1  a1,p1,p2,l1,e1, m1 o1 c1 k1 o2
		//mocko o highlite first instance but not second
		//can now check if a1 there , but not in position put yellow
		
		//for each letter in usersub	
			//if position and char same in correctword
				//green
			//if not check what character number instance is usersub and correct word
				//if both equal put yellow
				//if not make black
			
		$attempt_array = array(); //new

		if($input_text_filtered == $correct_word) {
			//user entered correct word
			db_insert_attempt($user_info[0]['user_id'], $user_info[0]['last_word_id'], $input_text_filtered,  'GGGGGG');//6 Gs
			$response_json = array('response' => 'word is correct');
			//echo json_encode($response_json);
		} else {
			//user entered incorrect word, log attempt
			$response_json = array('response' => 'word is incorrect');
			//echo json_encode($response_json);	
			//highlite all correct characters first
			for($x = 0; $x < strlen($correct_word); $x++) {		
				$user_char = $input_chars[$x];
				$correct_word_char = $correct_word_chars[$x];
				if ($user_char == $correct_word_char) {
					$attempt_array[] = array($user_char, 'CORRECT');	
				}else{	
					$attempt_array[] = array($user_char, 'INCORRECT');	
				}				
			}
			//highlite all possible characters wrong position
			for($x = 0; $x < strlen($input_text_filtered); $x++) {		
				$user_char = $input_chars[$x];

				$attempt_match = $attempt_array[$x][1];
				$number_instance = getNumberOfCharInstanceInString($user_char, $input_text_filtered);
				if($attempt_match == 'INCORRECT') {
					for($z = 0; $z < strlen($correct_word); $z++)
					{
						$correct_word_char = $correct_word_chars[$z];

						if ($user_char == $correct_word_char) {
							//first check if position
							//cehck duplicates TODO
							if($attempt_array[$x][1]=='INCORRECT') {
								$attempt_array[$x][1]='POSSIBLE';
							}
						}	
					}
				}
			}	
			//encode char state GPI good possible incorrect
			$character_state = "";
			foreach($attempt_array as $an_attempt) 
			{
				if($an_attempt[1] == 'CORRECT'){
					$character_state = $character_state."G";
				}elseif($an_attempt[1] == 'POSSIBLE'){
						$character_state = $character_state."P";
				}else{
						$character_state = $character_state."I";
				}

			}//foreach
			
			//update db
			db_insert_attempt($user_info[0]['user_id'], $user_info[0]['last_word_id'], $input_text_filtered,  $character_state);
		}//else
		
		$array_attempts = db_get_all_account_info($cookie_username);
		echo json_encode($array_attempts);
	}//if
}//function	

?>