My Blog's Mainframe

<?php
function display_content($admin){
    //open the current count
    //This will begin to display content to the user.
    $fh[2] = fopen("resources/count/entry.txt",'r');
    $entry_count = intval(fgets($fh[2]));
    fclose($fh[2]);
    include("resources/layouts/header.html");
    include("resources/layouts/main_container.html");
    include("resources/layouts/banner.html");
        if($admin){
        //include("resources/layouts/create_entry.html");
        //Also include the ability to see items in the recycle bin
        /*I'm considering writing this script in the create_entry.php file
        as it would make it easier to display the information
        although this would destroy the centralised paradigm of my website.

        ...Screw it, the create_entry.php will be incorporated into this main .php file
        */
        echo <<<END
<div class="container_comments_banner">
Admin Control Panel
</div>
<div class="container_admin_controls">
<div class="container_create_content">
<span class="entry_title">Create Entry</span><br>
<form enctype="multipart/form-data" method="post" action="index.php">
<input name="action" type="hidden" value="post">
Title:
<input type="text" name="title" id="title" />
</br>
Body (HTML scripting enabled):
</br>
<textarea name="body" id="body" cols="45" rows="5"></textarea>
</br>
File:
<input type="hidden" name="MAX_FILE_SIZE" value="300000000000" />
<input name="uploadedimage" type="file" />
</br>
<input type="submit" name="button" id="button" value="Submit" />
</form>
</br>
</div>
END;
        //Div is not closed yet
        //open the recycle bin directory
        $dir = "resources/entries/recycle/";
        if(is_dir($dir)){
            if($dh = opendir($dir)){
                $c = 0;
                while(($file[$c] = readdir($dh)) !== false){
                    $c++;
                    //that's a funny looking piece of code, this was taken mainly from php.net, but altered for my needs.
                }
            closedir($dh);
            }
        }
        if(isset($file)){
            echo <<<END
<div class="container_recycle_bin">
<span class="entry_title">Recycle Bin</span>
END;
            $flag = true;
            foreach($file as $key => $value){
                //I could do this as a for loop, but foreach is easier
                //I need to think about how this is going to be formatted visually.
                if(file_exists("resources/entries/recycle/$value")){
                    $fh[$key] = fopen("resources/entries/recycle/$value", 'r');
                    //Get the entries name, and image
                    $title = trim(fgets($fh[$key]));
                    $date = trim(fgets($fh[$key]));
                    $image = trim(fgets($fh[$key]));
                    $entry = explode(".", $value);
                    $entry = $entry[0];
                    if($image != "none" && $image != ""){
                        $flag = false;
                        echo <<<END
<div class="container_recycleBinOptions">
<img class="small_image" src="resources/entries/images/$image">
<span class="small_title">$title</span>
<span class="small_date">$date</span>
<div class="container_restore_entry"><a href="index.php?entry=$entry&action=restore">restore</a></div>
<div class="container_delete_entry"><a href="index.php?entry=$entry&action=deleteentry">delete permanently</a></div>
</div>
END;
                    }elseif($image != ""){
                        $flag = false;
                        echo <<<END
<div class="container_recycleBinOptions">
<span class="small_title">$title</span>
<span class="small_date">$date</span>
<div class="container_restore_entry"><a href="index.php?entry=$entry&action=restore">restore</a></div>
<div class="container_delete_entry"><a href="index.php?entry=$entry&action=deleteentry">delete permanently</a></div>
</div>
END;
                    }
                    fclose($fh[$key]);
                }
            }
            if($flag){
                echo "<div class=\"container_bin_is_empty\">Recycle Bin Is Empty</div>";
            }
        }
        echo <<<END
</div>
</div>
<div class="container_comments_banner">
Entries
</div>
END;
    }
    //display entries
    $styles = array(1 => "entry_title", 2 => "entry_date", 4 => "entry_body");
    //display 10 items per page
    if($_GET['page']){
        $page = $_GET['page'];
    }else{
        $page = 1;
    }
    for($i = $entry_count-(($page-1)*10); $i >= 0 && $i > $entry_count-$page*10; $i--){
        if(file_exists("resources/entries/$i.txt")){
            $fh[3] = fopen("resources/entries/$i.txt", 'r');
            echo "<div onclick=\"location.href='index.php?entry=$i';\" class=\"container_home_entry\">";
            $title = trim(fgets($fh[3]));
            $date = trim(fgets($fh[3]));
            $image = trim(fgets($fh[3]));
            echo <<<END
<span class="entry_title">$title</span>
<span class="entry_date">$date</span>
<p class="entry_body">
END;
            $file = "resources/entries/images/$image";
            if($image != "none" && file_exists($file)){
                echo "<a href=\"$file\" target=\"_new\"><img src=\"". $file ."\" border=0 class=\"entry_image\"></a>\n";
            }
            while(!feof($fh[3])){
                echo trim(nl2br(fgets($fh[3])))."\n";
            }
            echo <<<END
<a href="index.php?entry=$i">more...</a>
</p></div>
END;
            fclose($fh[3]);
        }
    }
    echo "<br>\n";
    if($page > 1){
        $out = $page-1;
        echo "<a href=\"index.php?page=$out\"><img src=\"resources/images/newer.png\" border=0></a>";
    }
    if($entry_count-$page*10 > 0){
        $out = $page+1;
        echo "<a href=\"index.php?page=$out\"><img src=\"resources/images/older.png\" border=0></a>";
    }
}

function display_entry($entry, $admin, $user_comments){
    //must remember, if admin is true, they have the ability to delete this post.
    include("resources/layouts/header.html");
    include("resources/layouts/main_container.html");
    include("resources/layouts/banner.html");
    if(file_exists("resources/entries/$entry.txt")){
        //Display the entry
        $fh[3] = fopen("resources/entries/$entry.txt", 'r');
        include("resources/layouts/home_entry_top.html");
        $title = trim(fgets($fh[3]));
        $date = trim(fgets($fh[3]));
        $image = trim(fgets($fh[3]));
        if($admin){
            echo "<div class=\"container_delete_comment\"><a href=\"index.php?entry=$entry&action=recycle\">delete</a></div>\n";
        }
        echo <<<END
<span class="entry_title">$title</span>
<span class="entry_date">$date</span>
<p class="entry_body">
END;
        $file = "resources/entries/images/$image";
        if($image != "none" && file_exists($file)){
            echo "<a href=\"$file\" target=\"_new\"><img src=\"". $file ."\" border=0 class=\"entry_image\"></a>\n";
        }
        while(!feof($fh[3])){
            echo trim(nl2br(fgets($fh[3])))."\n";
        }
        echo "</p></div>";
        fclose($fh[3]);
        //display the comments
        //comments are contained in "resources/entries/comments/$entry/#.txt"
        //Comments count is contained in "resources/entries/comments/$entry/count.txt"
        $fh[5] = fopen("resources/entries/comments/$entry/count.txt", 'r'); //The amount of comments
        $count = intval(trim(fgets($fh[5])));
        include("resources/layouts/comments_banner.html");
        for($i = $count; $i >= 0; $i--){
            $flag = 0;
            $char_count = 0;
            if(file_exists("resources/entries/comments/$entry/$i.txt")){
                $fh[6] = fopen("resources/entries/comments/$entry/$i.txt", 'r');
                //file layout: title \n author \n date \n content
                //Content has a character limit of 50, 50, none, 750 - respectively
                $title = substr(trim(fgets($fh[6])), 0, 50);
                $author = substr(trim(fgets($fh[6])), 0, 50);
                $date = trim(fgets($fh[6]));
                include("resources/layouts/comment_container.html");
                if(isset($user_comments[$i]) || $admin == 1){
                    //That means that this is the users comment!! :D
                    //Display the ability to delete this post
                    echo "<div class=\"container_delete_comment\"><a href=\"index.php?entry=$entry&action=delete&comment=$i\">delete</a></div>\n";
                }
                echo "<span class=\"entry_title\">$title - $author</span>\n";
                echo "<span class=\"entry_date\">$date</span><br>\n";
                while(!feof($fh[6]) && $char_count <= 750){
                    if($flag == 0){
                        echo "<p class=\"entry_body\">";
                    }
                    $new_line = trim(fgets($fh[6]));
                    $char_count += strlen($new_line);
                    $print_len = 750-$char_count;
                    if((750-$char_count)== 0){
                        $print_len =  0;
                    }
                    echo substr($new_line, 0, $print_len);
                    $flag = 1;
                }
                echo "</p></div>\n";
                fclose($fh[6]);
            }
        }
        include("resources/layouts/create_comment.php");
    }else{
        include("resources/layouts/home_entry_top.html");
        echo "<span class=\"entry_title\">ENTRY DOES NOT EXIST</span>\n</div>\n";
    }
}
putenv("TZ=Australia/Sydney");
//------ DETERMINE THE USER
$user = $_SERVER['REMOTE_ADDR'];
//open the users file
$fh[1] = fopen("users/admin.txt", 'r');
$admin = fgets($fh[1], 4096);
fclose($fh[1]);
$enc_user = md5(sha1($user));
//Determine who the user is
if($enc_user == $admin){
    if(!file_exists("users/$enc_user.txt")){
        //create new user file
        //This file is where a record of the users posts are kept
        //this is so they can later be deleted.
        $fh[14] = fopen("users/$enc_user.txt", 'x');
        fclose($fh[14]);
    }
    //determine what the admin wants to do
    if($_POST['action']){
        $action = $_POST['action'];
        if($action == "post"){
            //if the admin wants to create a new entry
            //update the entry count file
            $fh[4] = fopen("resources/count/entry.txt", 'r');
            $entry_count = intval(fgets($fh[4]));
            fclose($fh[4]);
            unlink("resources/count/entry.txt");
            $fh[4] = fopen("resources/count/entry.txt", 'x');
            fwrite($fh[4], 1+intval($entry_count));
            fclose($fh[4]);
            //create new entry
            $title = $_POST['title'];
            $date = date('l, j/n/Y g:ia');
            $extension = end(explode('.', $_FILES['uploadedimage']['name']));
            $file_location = "resources/entries/images/$entry_count.$extension";
            if(move_uploaded_file($_FILES['uploadedimage']['tmp_name'], $file_location)){
                //echo "succesful";
                $image = $entry_count.".".$extension;
            }else{
                //echo "unsuccesful";
                //echo $_FILES['uploadedimage']['error'];
                $image = "none";
            }
            $body = $_POST['body'];
            $fh[5] = fopen("resources/entries/$entry_count.txt", 'w');
            fwrite($fh[5], "$title\n$date\n$image\n$body");
            fclose($fh[5]);
            mkdir("resources/entries/comments/$entry_count", 0777);
            $fh[11] = fopen("resources/entries/comments/$entry_count/history.txt", 'x');
            fclose($fh[11]);
            $fh[7] = fopen("resources/entries/comments/$entry_count/count.txt", 'x');
            fwrite($fh[7], "0");
            fclose($fh[7]);
        }
        if($action == "comment"){
            $target = htmlspecialchars(trim($_POST['target']));
            $body =  htmlspecialchars(trim($_POST['body']));
            $body_md5 = md5($body);
            //make sure that the post does not already exist in this thread.
            $fh[12] = fopen("resources/entries/comments/$target/history.txt", 'r');
            $j = 0;
            while(!feof($fh[12])){
                $history[$j] = trim(fgets($fh[12]));
                $j++;
            }
            fclose($fh[12]);
            if(!in_array($body_md5, $history)){
                $title =  htmlspecialchars(trim($_POST['title']));
                $author = htmlspecialchars(trim($_POST['author']));
                $date = date('l, j/n/Y g:ia');
                if(file_exists("resources/entries/comments/$target/count.txt")){
                    $fh[8] = fopen("resources/entries/comments/$target/count.txt", 'r');
                    $count = 1+intval(trim(fgets($fh[8])));
                    fclose($fh[8]);
                    unlink("resources/entries/comments/$target/count.txt");
                    $fh[9] = fopen("resources/entries/comments/$target/count.txt", 'x');
                    fwrite($fh[9], $count);
                    fclose($fh[9]);
                    $fh[10] = fopen("resources/entries/comments/$target/$count.txt", 'w');
                    $string = "$title\n$author\n$date\n$body";
                    fwrite($fh[10], $string);
                    fclose($fh[10]);
                    //write the comment to the history file
                    $fh[13] = fopen("resources/entries/comments/$target/history.txt",'a');
                    fwrite($fh[13], $body_md5."\n");
                    //Update the users 'user' file
                    $fh[16] = fopen("users/$enc_user.txt", 'a');
                    $string = $target . "_" . $count . "\n";
                    fwrite($fh[16], $string);
                    fclose($fh[16]);
                }else{
                    $comment_fail = 1;
                }
            }else{
                $comment_fail = 1;
            }
            header("Location: http://vrysrs.me/index.php?entry=$target");
        }
    }
    if($_GET['action']){
        $action = $_GET['action'];
        //if the user wants to delete their comment
        if($action == "delete"){
            $entry = $_GET['entry'];
            $comment = $_GET['comment'];
            if(file_exists("resources/entries/comments/$entry/$comment.txt")){
                unlink("resources/entries/comments/$entry/$comment.txt");
            }
            header("Location: http://vrysrs.me/index.php?entry=$entry");
        }
        if($action == "recycle"){
            //Basically move the latter mentioned entry to the recycle bin, where it can later be removed permanently
            $entry = $_GET['entry'];
            if(file_exists("resources/entries/$entry.txt")){
                rename("resources/entries/$entry.txt", "resources/entries/recycle/$entry.txt");
            }
            header("Location: http://vrysrs.me");
            //That's basically it, the rest will be handled else-where
            //That works, now to write the bit which allows the entry to be restored
        }
        if($action == "restore"){
            $entry = $_GET['entry'];
            if(file_exists("resources/entries/recycle/$entry.txt")){
                rename("resources/entries/recycle/$entry.txt", "resources/entries/$entry.txt");
            }
            header("Location: http://vrysrs.me/index.php?entry=$entry");
            //Again this is very simple because that's all it needs to be
            //Actually deleting is a larger process as it needs to be completed thoroughly
        }
        if($action == "deleteentry"){
            $entry = $_GET['entry'];
            if(file_exists("resources/entries/recycle/$entry.txt")){
                //Proceed to delete entry
                /*Btw, if you're wandering, not much checking has to go on here.
                The user has already been signed on as being the admin.*/
                if(($fh[18] = fopen("resources/entries/recycle/$entry.txt", 'r')) !== false){
                    //move to the third line in the file where the image name is stored
                    for($i = 0; $i < 3; $i++){
                        //for loop because Marin would want me to
                        $image = trim(fgets($fh[18]));
                    }
                    if($image !== "none"){
                        unlink("resources/entries/images/$image");
                        //No confirmation here because 'whatcha gunna do?'
                    }
                }
                fclose($fh[18]);
                unlink("resources/entries/recycle/$entry.txt");
                if(file_exists("resources/entries/comments/$entry/count.txt")){
                    //begin deleting comments
                    $fh[19] = fopen("resources/entries/comments/$entry/count.txt", 'r');
                    $count = trim(fgets($fh[19]));
                    fclose($fh[19]);
                    unlink("resources/entries/comments/$entry/count.txt");
                    for($i = 1; $i <= $count; $i++){
                        if(file_exists("resources/entries/comments/$entry/$i.txt")){
                            unlink("resources/entries/comments/$entry/$i.txt");
                        }
                        //it's nice to be able to write code which wont generate any E_level warnings
                    }
                }
                if(file_exists("resources/entries/comments/$entry/history.txt")){
                    unlink("resources/entries/comments/$entry/history.txt");
                }
                rmdir("resources/entries/comments/$entry/");
            }
            header('location: http://vrysrs.me');
        }
    }
    if($_GET['entry'] && $action !== "deleteentry"){
        $entry = $_GET['entry'];
        display_entry($entry, 1, 0);
    }else{
        display_content(1);
    }
}else{
    //if not admin
    //Determine if the user exists in our database
    if(!file_exists("users/$enc_user.txt")){
        //create new user file
        //This file is where a record of the users posts are kept
        //this is so they can later be deleted.
        $fh[14] = fopen("users/$enc_user.txt", 'x');
        fclose($fh[14]);
    }
    //welcome, you are now a user of the the system.
    //Load a record of the users comments... even if they just joined the system, it's easier that way
    //array structure: $user_comments[<entry>][<comment number>]
    $fh[15] = fopen("users/$enc_user.txt", 'r');
    while(!feof($fh[15])){
        $line = explode("_", trim(fgets($fh[15])));
        $user_comments[$line[0]][$line[1]] = 1;
    }
    if($_POST['action']){
        $action = $_POST['action'];
        if($action == "comment"){
            $target = htmlspecialchars(trim($_POST['target']));
            $body =  htmlspecialchars(trim($_POST['body']));
            $body_md5 = md5($body);
            //make sure that the post does not already exist in this thread.
            $fh[12] = fopen("resources/entries/comments/$target/history.txt", 'r');
            $j = 0;
            while(!feof($fh[12])){
                $history[$j] = trim(fgets($fh[12]));
                $j++;
            }
            fclose($fh[12]);
            if(!in_array($body_md5, $history)){
                $title =  htmlspecialchars(trim($_POST['title']));
                $author = htmlspecialchars(trim($_POST['author']));
                $date = date('l, j/n/Y g:ia');
                if(file_exists("resources/entries/comments/$target/count.txt")){
                    $fh[8] = fopen("resources/entries/comments/$target/count.txt", 'r');
                    $count = 1+intval(trim(fgets($fh[8])));
                    fclose($fh[8]);
                    unlink("resources/entries/comments/$target/count.txt");
                    $fh[9] = fopen("resources/entries/comments/$target/count.txt", 'x');
                    fwrite($fh[9], $count);
                    fclose($fh[9]);
                    $fh[10] = fopen("resources/entries/comments/$target/$count.txt", 'w');
                    $string = "$title\n$author\n$date\n$body";
                    fwrite($fh[10], $string);
                    fclose($fh[10]);
                    //write the comment to the history file
                    $fh[13] = fopen("resources/entries/comments/$target/history.txt",'a');
                    fwrite($fh[13], $body_md5."\n");
                    //Update the users 'user' file
                    $fh[16] = fopen("users/$enc_user.txt", 'w');
                    $string = $target . "_" . $count . "\n";
                    fwrite($fh[16], $string);
                    fclose($fh[16]);
                }else{
                    $comment_fail = 1;
                }
            }else{
                $comment_fail = 1;
                //Yea, nothing really happens with that variable... :S
            }
            header("Location: http://vrysrs.me/index.php?entry=$target");
        }
    }
    if($_GET['action']){
        $action = $_GET['action'];
        //if the user wants to delete their comment
        if($action == "delete"){
            //Determine what the user wants to delete
            $entry = $_GET['entry'];
            $comment = $_GET['comment'];
            //Determine who the user is and what they have permission to delete
            $fh[17] = fopen("users/$enc_user.txt", 'r');
            while(!feof($fh[17])){
                $line = explode("_", trim(fgets($fh[17])));
                $user_comments[$line[0]][$line[1]] = 1;
            }
            fclose($fh[17]);
            if($user_comments[$entry][$comment] == 1){
                //if the user has permission to delete the file, delete it.
                if(file_exists("resources/entries/comments/$entry/$comment.txt")){
                    unlink("resources/entries/comments/$entry/$comment.txt");
                }
            }
        }
    }
    if($_GET['entry']){
        //Display the main content
        $entry = $_GET['entry'];
        display_entry($entry, 0, $user_comments[$entry]);
    }else{
        //By default, display the homepage.
        display_content(0);
    }
    //echo "Your IP is: $user <br> $enc_user";
}
echo "<br><span class=\"footer\">&copy; James Clarke ". date('Y') ."<br><br></span>";
echo "</div>";
include("resources/layouts/footer.html");
?>