From 5c0314a75d2722bb99918ef44473f4204462835a Mon Sep 17 00:00:00 2001
From: cflip <36554078+cflip@users.noreply.github.com>
Date: Wed, 14 Apr 2021 17:23:56 -0600
Subject: Add 'date edited' attribute to posts

---
 includes/functions_insert.php |  4 ++--
 model/Post.php                | 15 +++++++++++----
 model/Thread.php              |  4 ++--
 setup.sql                     |  3 ++-
 viewcategory.php              |  2 +-
 5 files changed, 18 insertions(+), 10 deletions(-)

diff --git a/includes/functions_insert.php b/includes/functions_insert.php
index e13b80e..4f60701 100644
--- a/includes/functions_insert.php
+++ b/includes/functions_insert.php
@@ -16,7 +16,7 @@ function insert_thread($dbc, $thread_subject, $thread_cat, $thread_author) {
 }
 
 function insert_post($dbc, $post_content, $post_thread, $post_author, $post_category) {
-	$sql = "INSERT INTO posts(post_content, post_date, post_thread, post_author) VALUES (?, CONVERT_TZ(NOW(), 'SYSTEM', '+00:00'), ?, ?);";
+	$sql = "INSERT INTO posts(post_content, post_date_created, post_thread, post_author) VALUES (?, CONVERT_TZ(NOW(), 'SYSTEM', '+00:00'), ?, ?);";
 	$stmt = mysqli_stmt_init($dbc);
 
 	if (!mysqli_stmt_prepare($stmt, $sql)) {
@@ -32,4 +32,4 @@ function insert_post($dbc, $post_content, $post_thread, $post_author, $post_cate
 
 	$sql = "UPDATE threads SET thread_date_lastpost = CONVERT_TZ(NOW(), 'SYSTEM', '+00:00') WHERE thread_id = " . $post_thread . ";";
 	mysqli_query($dbc, $sql);
-}
\ No newline at end of file
+}
diff --git a/model/Post.php b/model/Post.php
index 5d85f20..d7aba72 100644
--- a/model/Post.php
+++ b/model/Post.php
@@ -25,13 +25,14 @@ function add_quote($dbc, $thread_id, $matches) {
 class Post {
 	public $id;
 	public $content;
-	public $date;
+	public $date_created;
+	public $date_edited;
 	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);
+		$sql = "SELECT post_content, post_date_created, post_date_edited, post_thread, post_author FROM posts WHERE post_id = " . mysqli_real_escape_string($dbc, $id);
 		$result = mysqli_query($dbc, $sql);
 	
 		if (!$result) {
@@ -39,11 +40,13 @@ class Post {
 		}
 	
 		if (mysqli_num_rows($result) == 0) {
+			return 0;
 		} else {
 			while ($row = mysqli_fetch_assoc($result)) {
 				$this->id = $id;
 				$this->content = $row['post_content'];
-				$this->date = $row['post_date'];
+				$this->date_created = $row['post_date_created'];
+				$this->date_edited = $row['post_date_edited'];
 
 				$this->thread = new Thread();
 				$this->thread->get_from_database($row['post_thread'], $dbc);
@@ -54,12 +57,16 @@ class Post {
 		}
 
 		mysqli_free_result($result);
+		return 1;
 	}
 
 	function display_content($dbc) {
 		echo '<div class="header" id="p' . $this->id . '"><b>#' . $this->id . '</b>';
 		echo ' Posted by <a href="viewuser.php?id='. $this->author->id . '">' . $this->author->name . '</a>';
-		echo ' on ' . date('m/d/Y g:ia', strtotime($this->date));
+		echo ' on ' . date('m/d/Y g:ia', strtotime($this->date_created));
+		if (!is_null($this->date_edited)) {
+			echo ' <small>edited ' . date('m/d/Y g:ia', strtotime($this->date_edited)) . '</small>';
+		}
 		if (isset($_SESSION['signed_in']) && $_SESSION['user_id'] == $this->author->id) {
 			echo '<span style="float:right;">';
 			echo '[<a href="includes/manage_post.php?action=edit&id=' . $this->id . '">Edit</a>] ';
diff --git a/model/Thread.php b/model/Thread.php
index aa48cfd..a9dc690 100644
--- a/model/Thread.php
+++ b/model/Thread.php
@@ -65,7 +65,7 @@ class Thread {
 	}
 
 	function get_latest_post($dbc) {
-		$sql = "SELECT post_id FROM posts WHERE post_thread = " . $this->id . " ORDER BY post_date DESC LIMIT 1";
+		$sql = "SELECT post_id FROM posts WHERE post_thread = " . $this->id . " ORDER BY post_date_created DESC LIMIT 1";
 		$result = mysqli_query($dbc, $sql);
 	
 		if (!$result) {
@@ -108,4 +108,4 @@ function get_all_threads($dbc) {
 
 	mysqli_free_result($result);
 	return $threads;
-}
\ No newline at end of file
+}
diff --git a/setup.sql b/setup.sql
index b362798..6a96b8a 100644
--- a/setup.sql
+++ b/setup.sql
@@ -31,7 +31,8 @@ CREATE TABLE threads (
 CREATE TABLE posts (
 	post_id INT(8) NOT NULL AUTO_INCREMENT,
 	post_content TEXT NOT NULL,
-	post_date DATETIME NOT NULL,
+	post_date_created DATETIME NOT NULL,
+	post_date_edited DATETIME,
 	post_thread INT(8) NOT NULL,
 	post_author INT(8) NOT NULL,
 	PRIMARY KEY (post_id)
diff --git a/viewcategory.php b/viewcategory.php
index 0d69ed8..a10afce 100644
--- a/viewcategory.php
+++ b/viewcategory.php
@@ -59,7 +59,7 @@ if (!isset($_GET['id']) || !filter_var($_GET['id'], FILTER_VALIDATE_INT)) {
 			echo '<small> by <b><a href="viewuser.php?id=' . $thread->author->id . '">' . $thread->author->name . '</a></b> on ' . date('M d, Y', strtotime($thread->date_created)) . '</small></td>';
 
 			if (!is_null($latest_post)) {
-				echo '<td>by <b><a href="viewuser.php?id=' . $latest_post->author->id . '">' . $latest_post->author->name . '</a></b><small> on ' . $latest_post->date . '</small></td>';
+				echo '<td>by <b><a href="viewuser.php?id=' . $latest_post->author->id . '">' . $latest_post->author->name . '</a></b><small> on ' . $latest_post->date_created . '</small></td>';
 			} else {
 				echo '<td>No posts yet!</td>';
 			}
-- 
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