From f83530a122119d7f69812493f9c2f4987ccb2065 Mon Sep 17 00:00:00 2001
From: Cflip <36554078+cflip@users.noreply.github.com>
Date: Wed, 10 Feb 2021 20:40:32 -0700
Subject: Reorganize code and add info to front page

---
 includes/functions_display.php | 118 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 includes/functions_display.php

(limited to 'includes/functions_display.php')

diff --git a/includes/functions_display.php b/includes/functions_display.php
new file mode 100644
index 0000000..479648f
--- /dev/null
+++ b/includes/functions_display.php
@@ -0,0 +1,118 @@
+<?php
+
+function display_navbar($dbc) {
+
+}
+
+function display_categories($dbc, $sql_result) {
+	$sql = "SELECT thread_id, thread_subject, thread_date, user_id, user_name FROM threads JOIN users ON thread_author = user_id WHERE thread_cat = ? ORDER BY thread_id DESC LIMIT 1";
+	$stmt = mysqli_stmt_init($dbc);
+
+	if (!mysqli_stmt_prepare($stmt, $sql)) {
+		die('Could not create thread due to internal error: ' . mysqli_error($dbc));
+	}
+
+	while ($row = mysqli_fetch_assoc($sql_result)) {
+		mysqli_stmt_bind_param($stmt, "i", $row['cat_id']);
+		mysqli_stmt_execute($stmt);
+
+		$thread_res = mysqli_stmt_get_result($stmt);
+		$thread = mysqli_fetch_assoc($thread_res);
+
+		echo '<tr><td class="left">';
+		echo '<h4><a href="category.php?id=' . $row['cat_id'] . '">' . $row['cat_name'] . '</a></h4>';
+		echo $row['cat_description'];
+		if ($thread) {
+			echo '</td><td class="right">' . $thread['thread_subject'] . '<br>';
+			echo '<small>by <b><a href="user.php?id=' . $thread['user_id'] . '">' . $thread['user_name'] . '</a></b></small></td></tr>';
+		} else {
+			$no_threads_msg = 'There are no threads in this category yet.';
+			echo '</td><td class="right"><small>'. $no_threads_msg .'</small></td>';
+		}
+	}
+
+	mysqli_stmt_close($stmt);
+	mysqli_free_result($thread_res);
+}
+
+function display_threads($dbc, $sql_result, $show_category = false) {
+	$sql = "SELECT post_id, post_date, user_id, user_name FROM posts JOIN users ON post_author = user_id WHERE post_thread = ? ORDER BY post_id DESC LIMIT 1";
+	$stmt = mysqli_stmt_init($dbc);
+
+	if (!mysqli_stmt_prepare($stmt, $sql)) {
+		die('Could not create thread due to internal error: ' . mysqli_error($dbc));
+	}
+
+	while ($row = mysqli_fetch_assoc($sql_result)) {
+		mysqli_stmt_bind_param($stmt, "i", $row['thread_id']);
+		mysqli_stmt_execute($stmt);
+
+		$thread_res = mysqli_stmt_get_result($stmt);
+		$thread = mysqli_fetch_assoc($thread_res);
+
+		echo '<tr><td class="left">';
+		echo '<h4><a href="thread.php?id=' . $row['thread_id'] . '">' . $row['thread_subject'] . '</a></h4>';
+		echo '<small>by <b><a href="user.php?id=' . $row['user_id'] . '">' . $row['user_name'] . '</a></b> ';
+		if ($show_category) {
+			echo 'in <b><a href="category.php?id=' . $row['cat_id'] . '">' . $row['cat_name'] . '</a></b> ';
+		}
+		echo 'on ' . date('M d, Y', strtotime($row['thread_date'])) . '</small>'; 
+		echo '</td><td class="right">by <b><a href="user.php?id=' . $thread['user_id'] . '">' . $thread['user_name'] . '</a></b><br>'; 
+		echo '<small>' . date('m/d/Y g:ia', strtotime($thread['post_date'])) . '</small></td></tr>';
+	}
+
+	mysqli_stmt_close($stmt);
+}
+
+function add_quote($dbc, $thread_id, $matches) {
+	foreach ($matches as $match) {
+		$id = (int) filter_var($match, FILTER_SANITIZE_NUMBER_INT) - 1;
+		$sql = "SELECT post_content, post_author, user_name FROM posts LEFT JOIN users ON post_author = user_id WHERE post_thread = " . $thread_id . " LIMIT 1 OFFSET " . $id;
+		$result = mysqli_query($dbc, $sql);
+
+		if (!$result) {
+			return '<blockquote></blockquote>';
+		}
+
+		$reply = mysqli_fetch_assoc($result);
+
+		if (empty($reply)) {
+			return '<blockquote>Invalid quote!</blockquote>';
+		}
+
+		$id = $id + 1;
+
+		return '<blockquote><a href="#' . $id .'">Quote from ' . $reply['user_name'] . '</a><br>' . $reply['post_content'] . '</blockquote>';
+	}
+}
+
+function display_posts($dbc, $sql_result) {
+	echo '<table>';
+	$post_index = 1;
+	$thread_id = $_GET['id'];
+
+	while ($row = mysqli_fetch_assoc($sql_result)) {
+		echo '<tr><th></th><th>' . $post_index . '</th></tr>';
+		echo '<tr class="post" id=' . $post_index . '><td>Posted by <a href="user.php?id='. $row['user_id'] .'">' . $row['user_name'] . '</a><br><small>' . date('m/d/Y g:ia', strtotime($row['post_date'])) . '</small></td>';
+
+		$post_content = $row['post_content'];
+
+		$post_content = preg_replace_callback('/>#\d+/', function($matches) use($thread_id, $dbc) {
+			return add_quote($dbc, $thread_id, $matches);
+		}, $post_content);
+
+		// Replace YouTube URLs with embedded YouTube videos.
+		$post_content =  preg_replace(
+			"/\s*[a-zA-Z\/\/:\.]*youtu(be.com\/watch\?v=|.be\/)([a-zA-Z0-9\-_]+)([a-zA-Z0-9\/\*\-\_\?\&\;\%\=\.]*)/i",
+			'<br><iframe class="youtube-embed" src="//www.youtube.com/embed/$2" allowfullscreen></iframe>', $post_content);
+		// Replace Image URLs with embedded images.
+		$post_content = preg_replace('@\b(http(s)?://)([^\s]*?(?:\.[a-z\d?=/_-]+)+(?:\.jpg|\.png|\.gif))(?![^<]*?(?:</\w+>|/?>))@i', '<img class="image-embed" src="http$2://$3" alt="http$2://$3" />', $post_content);
+		// Replace other URLs with links.
+		$post_content = preg_replace('@\b(http(s)?://)([^\s]*?(?:\.[a-z\d?=/_-]+)+)(?![^<]*?(?:</\w+>|/?>))@i', '<a href="http$2://$3">$0</a>', $post_content);
+
+		echo '<td class="post-content">' . $post_content . '</td></tr>';
+
+		$post_index++;
+	}
+	echo '</table>';
+}
\ No newline at end of file
-- 
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