From 7ef208fc1ae5a24d7b3cd2e22e969285fbf7262a Mon Sep 17 00:00:00 2001
From: cflip <36554078+cflip@users.noreply.github.com>
Date: Sun, 21 Mar 2021 17:29:58 -0600
Subject: Add additional classes and functions

---
 model/Category.php | 48 ++++++++++++++++++++++++++++++--
 model/Post.php     | 82 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 model/Thread.php   | 55 +++++++++++++++++++++++++++++++++++-
 model/User.php     | 54 +++++++++++++++++++++++++++++++++++
 4 files changed, 236 insertions(+), 3 deletions(-)
 create mode 100644 model/Post.php
 create mode 100644 model/User.php

(limited to 'model')

diff --git a/model/Category.php b/model/Category.php
index d98b08b..ffd903c 100644
--- a/model/Category.php
+++ b/model/Category.php
@@ -1,5 +1,7 @@
 <?php
 
+include_once 'Thread.php';
+
 class Category {
 	public $id = 0;
 	public $name = 'Unknown';
@@ -30,7 +32,49 @@ class Category {
 		mysqli_free_result($result);
 	}
 
-	function get_threads() {
-		
+	function get_threads($dbc) {
+		$sql = "SELECT thread_id FROM threads WHERE thread_category = " . $this->id;
+		$result = mysqli_query($dbc, $sql);
+	
+		if (!$result) {
+			echo 'Could not get threads from category: ' . mysqli_error($dbc);
+		}
+	
+		$threads = array();
+
+		if (mysqli_num_rows($result) == 0) {
+		} else {
+			while ($row = mysqli_fetch_assoc($result)) {
+				$thread = new Thread();
+				$thread->get_from_database($row['thread_id'], $dbc);
+				array_push($threads, $thread);
+			}
+		}
+
+		mysqli_free_result($result);
+		return $threads;
+	}
+}
+
+function get_all_categories($dbc) {
+	$sql = "SELECT cat_id FROM categories";
+	$result = mysqli_query($dbc, $sql);
+	
+	if (!$result) {
+		echo 'Failed to get categories: ' . mysqli_error($dbc);
 	}
+
+	$categories = array();
+
+	if (mysqli_num_rows($result) == 0) {
+	} else {
+		while ($row = mysqli_fetch_assoc($result)) {
+			$category = new Category();
+			$category->get_from_database($row['cat_id'], $dbc);
+			array_push($categories, $category);
+		}
+	}
+
+	mysqli_free_result($result);
+	return $categories;
 }
\ No newline at end of file
diff --git a/model/Post.php b/model/Post.php
new file mode 100644
index 0000000..bcaff29
--- /dev/null
+++ b/model/Post.php
@@ -0,0 +1,82 @@
+<?php
+
+include_once 'Thread.php';
+
+class Post {
+	public $id;
+	public $content;
+	public $date;
+	public $thread;
+	public $author;
+
+	function get_from_database($id, $dbc) {
+		// TODO: Potential SQL injection risk?
+		$sql = "SELECT post_content, post_date, post_thread, post_author FROM posts WHERE post_id = " . mysqli_real_escape_string($dbc, $id);
+		$result = mysqli_query($dbc, $sql);
+	
+		if (!$result) {
+			echo 'Failed to get post: ' . mysqli_error($dbc);
+		}
+	
+		if (mysqli_num_rows($result) == 0) {
+		} else {
+			while ($row = mysqli_fetch_assoc($result)) {
+				$this->id = $id;
+				$this->content = $row['post_content'];
+				$this->date = $row['post_date'];
+
+				$this->thread = new Thread();
+				$this->thread->get_from_database($row['post_thread'], $dbc);
+
+				$this->author = new User();
+				$this->author->get_by_id($row['post_author'], $dbc);
+			}
+		}
+
+		mysqli_free_result($result);
+	}
+
+	function display_content() {
+		echo '<div>#' . $this->id . ' Posted by <a href="/forum/user/'. $this->author->name .'">' . $this->author->name . '</a> on ' . date('m/d/Y g:ia', strtotime($this->date)) . '<br></div>';
+
+		$post_content = $this->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 $post_content;
+	}
+}
+
+function get_all_posts($dbc) {
+	$sql = "SELECT post_id FROM posts";
+	$result = mysqli_query($dbc, $sql);
+	
+	if (!$result) {
+		echo 'Failed to get posts: ' . mysqli_error($dbc);
+	}
+
+	$posts = array();
+
+	if (mysqli_num_rows($result) == 0) {
+	} else {
+		while ($row = mysqli_fetch_assoc($result)) {
+			$post = new Post();
+			$post->get_from_database($row['post_id'], $dbc);
+			array_push($posts, $post);
+		}
+	}
+
+	mysqli_free_result($result);
+	return $posts;
+}
\ No newline at end of file
diff --git a/model/Thread.php b/model/Thread.php
index 78d2614..ade24b5 100644
--- a/model/Thread.php
+++ b/model/Thread.php
@@ -1,6 +1,8 @@
 <?php
 
 include_once 'Category.php';
+include_once 'User.php';
+include_once 'Post.php';
 
 class Thread {
 	public $id = 0;
@@ -11,7 +13,7 @@ class Thread {
 	public $author;
 
 	function get_from_database($id, $dbc) {
-		$sql = "SELECT thread_subject, thread_date_created, thread_date_lastpost, thread_category FROM threads WHERE thread_id = " . mysqli_real_escape_string($dbc, $id);
+		$sql = "SELECT thread_subject, thread_date_created, thread_date_lastpost, thread_category, thread_author FROM threads WHERE thread_id = " . mysqli_real_escape_string($dbc, $id);
 		$result = mysqli_query($dbc, $sql);
 	
 		if (!$result) {
@@ -29,7 +31,58 @@ class Thread {
 
 				$this->category = new Category();
 				$this->category->get_from_database($row['thread_category'], $dbc);
+
+				$this->author = new User();
+				$this->author->get_by_id($row['thread_author'], $dbc);
+			}
+		}
+
+		mysqli_free_result($result);
+	}
+
+	function get_posts($dbc) {
+		$sql = "SELECT post_id FROM posts WHERE post_thread = " . $this->id;
+		$result = mysqli_query($dbc, $sql);
+	
+		if (!$result) {
+			echo 'Could not get posts from thread: ' . mysqli_error($dbc);
+		}
+	
+		$posts = array();
+
+		if (mysqli_num_rows($result) == 0) {
+		} else {
+			while ($row = mysqli_fetch_assoc($result)) {
+				$post = new Post();
+				$post->get_from_database($row['post_id'], $dbc);
+				array_push($posts, $post);
 			}
 		}
+
+		mysqli_free_result($result);
+		return $posts;
+	}
+}
+
+function get_all_threads($dbc) {
+	$sql = "SELECT thread_id FROM threads";
+	$result = mysqli_query($dbc, $sql);
+	
+	if (!$result) {
+		echo 'Failed to get threads: ' . mysqli_error($dbc);
+	}
+
+	$threads = array();
+
+	if (mysqli_num_rows($result) == 0) {
+	} else {
+		while ($row = mysqli_fetch_assoc($result)) {
+			$thread = new Thread();
+			$thread->get_from_database($row['thread_id'], $dbc);
+			array_push($threads, $thread);
+		}
 	}
+
+	mysqli_free_result($result);
+	return $threads;
 }
\ No newline at end of file
diff --git a/model/User.php b/model/User.php
new file mode 100644
index 0000000..89a14a5
--- /dev/null
+++ b/model/User.php
@@ -0,0 +1,54 @@
+<?php
+
+class User {
+	public $id;
+	public $name = 'Unknown';
+	public $date = 0;
+
+	function get_by_name($name, $dbc) {
+		$sql = "SELECT user_id, user_date FROM users WHERE user_name = ?";
+		$stmt = mysqli_stmt_init($dbc);
+
+		if (!mysqli_stmt_prepare($stmt, $sql)) {
+			echo 'Failed to get user: ' . mysqli_error($dbc);
+		}
+
+		mysqli_stmt_bind_param($stmt, "s", $name);
+		mysqli_stmt_execute($stmt);
+
+		$result = mysqli_stmt_get_result($stmt);
+
+		if (mysqli_num_rows($result) == 0) {
+		} else {
+			while ($row = mysqli_fetch_assoc($result)) {
+				$this->id = $row['user_id'];
+				$this->name = $name;
+				$this->date = $row['user_date'];
+			}
+		}
+
+		mysqli_free_result($result);
+		mysqli_stmt_close($stmt);
+	}
+
+	function get_by_id($id, $dbc) {
+		$sql = "SELECT user_name, user_date FROM users WHERE user_id = " . mysqli_real_escape_string($dbc, $id);
+		$result = mysqli_query($dbc, $sql);
+	
+		if (!$result) {
+			echo 'Failed to get user: ' . mysqli_error($dbc);
+		}
+	
+		if (mysqli_num_rows($result) == 0) {
+		} else {
+			while ($row = mysqli_fetch_assoc($result)) {
+				$this->id = $id;
+				$this->name = $row['user_name'];
+				$this->date = $row['user_date'];
+			}
+		}
+	
+		mysqli_free_result($result);
+	}
+
+}
\ No newline at end of file
-- 
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