adlerka.top/lib/meme.php

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<?php
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require_once "lib/upload.php";
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require_once "lib/account.php";
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function addMeme(string $title, string $memeText, int $imageID): array
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{
global $mysqli;
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$output = ["Status" => "Fail"];
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if (isLoggedIn() && fileExists($imageID, false) && !empty($title) && !empty($memeText) && !empty($imageID) && $imageID > 0) {
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$stmtMemeAdd = $mysqli->prepare('INSERT INTO Memes (AuthorID, Title, TextContent, FileID) VALUES (?, ?, ?, ?)');
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$stmtMemeAdd->bind_param('issi', $_SESSION['ID'], htmlspecialchars($title), htmlspecialchars($memeText), $imageID);
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if ($stmtMemeAdd->execute() && $stmtMemeAdd->affected_rows > 0) {
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$output["Status"] = "Success";
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$output["Meme"] = "Funny";
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}
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}
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return $output;
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}
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function renderMeme(int $id, int $authorId, string $title, string $textContent, string $createdAt, string $filePath, int $imageWidth, int $imageHeight, string $userNickname, string $meme_template): string
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{
$meme_out = str_replace('__TEMPLATE_MEME_TITLE__', htmlspecialchars($title), $meme_template);
$meme_out = str_replace('__TEMPLATE_MEME_AUTHOR__', htmlspecialchars($userNickname), $meme_out);
$meme_out = str_replace('__TEMPLATE_MEME_DATE__', htmlspecialchars($createdAt), $meme_out);
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$meme_out = str_replace('__TEMPLATE_MEME_IMAGE__', '/' . htmlspecialchars($filePath), $meme_out);
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$meme_out = str_replace('__TEMPLATE_MEME_IMAGE_WIDTH__', strval($imageWidth), $meme_out);
$meme_out = str_replace('__TEMPLATE_MEME_IMAGE_HEIGHT__', strval($imageHeight), $meme_out);
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$meme_out = str_replace('__TEMPLATE_MEME_DELETE_BUTTON__', (isModerator() || $_SESSION['ID'] == $authorId) ? "<button onclick=\"deleteMeme($id);\"><i class='ri-delete-bin-line'></i></button>" : '', $meme_out);
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$meme_votes = calculateNetVotes($id);
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$meme_net_votes = $meme_votes['NetVotes'];
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if ($meme_votes['UserVote'] > 0){
$meme_upvote_active = 'fill';
$meme_downvote_active = 'line';
$meme_vote_counter_class = 'positive';
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$meme_upvote_button_class = ' visual_hover';
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$meme_downvote_button_class = '';
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}
elseif (($meme_votes['UserVote'] < 0)) {
$meme_upvote_active = 'line';
$meme_downvote_active = 'fill';
$meme_vote_counter_class = 'negative';
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$meme_upvote_button_class = '';
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$meme_downvote_button_class = ' visual_hover';
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}
else {
$meme_downvote_active = 'line';
$meme_upvote_active = 'line';
$meme_vote_counter_class = 'neutral';
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$meme_upvote_button_class = '';
$meme_downvote_button_class = '';
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}
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$meme_upvote = isLoggedIn() ? "<button id='meme_votes_upvote_button_$id' class='meme_upvote$meme_upvote_button_class' onclick=\"voteMeme($id, 1);\"> <i id='meme_votes_upvote_$id' class=\"ri-arrow-up-circle-$meme_upvote_active\"></i></button>" : '';
$meme_downvote = isLoggedIn() ? "<button id='meme_votes_downvote_button_$id' class='meme_downvote$meme_downvote_button_class' onclick=\"voteMeme($id, 0);\"> <i id='meme_votes_downvote_$id' class=\"ri-arrow-down-circle-$meme_downvote_active\"></i></button>" : '';
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$meme_out = str_replace('__TEMPLATE_MEME_VOTES_NUMBER__', strval($meme_net_votes), $meme_out);
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$meme_out = str_replace('__TEMPLATE_MEME_UPVOTE__', $meme_upvote, $meme_out);
$meme_out = str_replace('__TEMPLATE_MEME_DOWNVOTE__', $meme_downvote, $meme_out);
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$meme_out = str_replace('__TEMPLATE_MEME_ID__', strval($id), $meme_out);
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$meme_out = str_replace('__TEMPLATE_MEME_VOTE_COUNTER_CLASS__', $meme_vote_counter_class, $meme_out);
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return str_replace('__TEMPLATE_MEME_TEXT__', htmlspecialchars($textContent), $meme_out);
}
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function renderMemeGallery(): string
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{
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global $mysqli;
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global $routerConfig;
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$stmtlist = $mysqli->prepare('SELECT Memes.ID, Memes.Title, Memes.TextContent, Memes.CreatedAt, Memes.AuthorID, Files.Path, Files.Width, Files.Height, Files.Type, Users.Nickname FROM Memes INNER JOIN Users ON Memes.AuthorID = Users.ID INNER JOIN Files ON Memes.FileID = Files.ID');
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// Execute the prepared statement
$memeID = 0;
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$authorID = 0;
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$title = "";
$textContent = "";
$filePath = "";
$fileType = "";
$userNickname = "";
$createdAt = "";
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$imageWidth = 0;
$imageHeight = 0;
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// Bind the result variables
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$stmtlist->bind_result($memeID, $title, $textContent, $createdAt, $authorID, $filePath, $imageWidth, $imageHeight, $fileType, $userNickname);
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$stmtlist->execute();
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$meme_gallery_template = file_get_contents($routerConfig['template_dir'] . 'meme_gallery.html');
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// Fetch the results
$memes_out = '';
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$meme_template = file_get_contents($routerConfig['template_dir'] . "meme.html");
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$stmtlist->store_result();
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while ($stmtlist->fetch()) {
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if (str_starts_with($fileType, 'image')) {
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$memes_out .= renderMeme($memeID, $authorID, $title, $textContent, $createdAt, $filePath, $imageWidth, $imageHeight, $userNickname, $meme_template);
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}
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}
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$meme_add = isLoggedIn() ? file_get_contents($routerConfig['template_dir'] . 'meme_add.html') : '';
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$meme_gallery_out = str_replace('__TEMPLATE_MEMES_HERE__', $memes_out, $meme_gallery_template);
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$meme_gallery_out = str_replace('__TEMPLATE_MEME_ADD__', $meme_add, $meme_gallery_out);
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// Close the statement
$stmtlist->close();
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return $meme_gallery_out;
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}
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function deleteMeme(int $memeID): array
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{
global $mysqli;
$out = ["Status" => "Fail"];
if (isLoggedIn()) {
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$query = !isModerator() ? 'DELETE FROM Memes WHERE ID = ? AND AuthorID = ?' : 'DELETE FROM Memes WHERE ID = ?';
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$stmtDelete = $mysqli->prepare($query);
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if (!isModerator()) {
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$stmtDelete->bind_param('ii', $memeID, $_SESSION['ID']);
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} else {
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$stmtDelete->bind_param('i', $memeID);
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}
$stmtDelete->execute();
if ($stmtDelete->affected_rows > 0) {
$out['Status'] = 'Success';
}
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$stmtDelete->close();
}
return $out;
}
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function voteMeme(int $memeID, int $isUpvote): array
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{
global $mysqli;
$out = ["Status" => "Fail"];
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if ($isUpvote != 1) {
$isUpvote = 0;
}
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$memeVoteConn = $mysqli->prepare('INSERT INTO MemeVotes (MemeID, UserID, isUpvote) VALUES (?, ?, ?) ON DUPLICATE KEY UPDATE isUpvote = VALUES(isUpvote)');
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$memeVoteConn->bind_param('iii', $memeID, $_SESSION['ID'], $isUpvote);
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$memeVoteConn->execute();
if ($memeVoteConn->affected_rows > 0) {
$out['Status'] = 'Success';
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}
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$memeVoteConn->close();
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return $out;
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}
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function deleteVoteMeme(int $memeID): array
{
global $mysqli;
$out = ["Status" => "Fail"];
$memeVoteConn = $mysqli->prepare('DELETE FROM MemeVotes WHERE MemeID = ? AND UserID = ?');
$memeVoteConn->bind_param('ii', $memeID, $_SESSION['ID']);
$memeVoteConn->execute();
if ($memeVoteConn->affected_rows > 0) {
$out['Status'] = 'Success';
}
$memeVoteConn->close();
return $out;
}
function calculateNetVotes(int $memeID): array
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{
global $mysqli;
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$query = 'SELECT isUpvote, UserID FROM MemeVotes WHERE MemeID = ?';
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$stmt = $mysqli->prepare($query);
$stmt->bind_param('i', $memeID);
$stmt->execute();
$result = $stmt->get_result();
$netVotes = 0;
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$userVote = 0;
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while ($row = $result->fetch_assoc()) {
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$vote = ($row['isUpvote'] == 1) ? 1 : -1;
$netVotes += $vote;
if ($row['UserID'] == $_SESSION['ID']) {
$userVote = $vote;
}
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}
$stmt->close();
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return [
"NetVotes" => $netVotes,
"UserVote" => $userVote
];
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}
function getMemeVotes(int $memeID): array
{
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$voteData = calculateNetVotes($memeID);
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return [
"Status" => "Success",
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"NetVotes" => $voteData['NetVotes'],
"UserVote" => $voteData['UserVote']
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];
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}