List unread items on home page (#6)

- Fix feed update (latent bug on #4)

src/lib/Feed.php

@@ -190,10 +190,12 @@ class Feed {
                         && (   $existing['published_on']     != $item['published']
                             || $existing['updated_on'] ?? '' != $item['updated'] ?? '')) {
                         self::updateItem($existing['id'], $item, $db);
-                    }
                     } else {
                         self::addItem($feedId, $item, $db);
                     }
+                } else {
+                    throw new Exception($db->lastErrorMsg());
+                }
             }
         } catch (Exception $ex) {
             return ['error' => $ex->getMessage()];

src/public/assets/style.css

@@ -5,8 +5,15 @@ html {
 body {
     margin: 0;
     font-size: 1rem;
-    background: linear-gradient(135deg, #eeeeff, #ddddff, #eeeeff, #ccccff);
-    /* background-color: #eeeeee; */
+    background: linear-gradient(135deg, #eeeeff, #ddddff, #eeeeff, #ccccff) fixed;
+}
+a:link, a:visited {
+    text-decoration: none;
+    font-weight: bold;
+    color: navy;
+}
+a:hover {
+    text-decoration: underline;
 }
 header {
     padding: 0 1rem .5rem 1rem;
@@ -25,10 +32,6 @@ header {
 
     a:link, a:visited {
         color: white;
-        text-decoration: none;
-    }
-    a:hover {
-        text-decoration: underline;
     }
 }
 main {

src/public/feed.php

@@ -18,7 +18,7 @@ if ($_SERVER['REQUEST_METHOD'] == 'POST') {
         $result = Feed::add($_POST['url'], $db);
     } else {
         $toEdit = Data::retrieveFeedById($_POST['id'], $db);
-        $result = $toEdit ? Feed::update($toEdit, $_POST['url'], $db) : [ 'error' => "Feed {$_POST['id']} not found" ];
+        $result = $toEdit ? Feed::update($toEdit, $_POST['url'], $db) : ['error' => "Feed {$_POST['id']} not found"];
     }
     if (array_key_exists('ok', $result)) {
         add_info('Feed saved successfully');

src/public/index.php

@@ -9,6 +9,35 @@ include '../start.php';
 
 Security::verifyUser();
 
+$db     = Data::getConnection();
+$result = $db->query(<<<'SQL'
+    SELECT item.id, item.title AS item_title, coalesce(item.updated_on, item.published_on) AS as_of,
+           feed.title AS feed_title
+      FROM item
+           INNER JOIN feed ON feed.id = item.feed_id
+     WHERE item.is_read = 0
+     ORDER BY coalesce(item.updated_on, item.published_on) DESC
+    SQL);
+$item   = $result ? $result->fetchArray(SQLITE3_ASSOC) : false;
+
 page_head('Welcome'); ?>
-<p>Unread items go here</p><?php
+<h1>Your Unread Items</h1>
+<article><?php
+if ($item) {
+    while ($item) {
+        try {
+            $asOf = (new DateTimeImmutable($item['as_of']))->format(DATE_TIME_FORMAT);
+        } catch (Exception) {
+            $asOf = '(invalid date)';
+        } ?>
+        <p><a href=/item/view?id=<?=$item['id']?>><?=htmlentities($item['item_title'])?></a><br>
+            <?=htmlentities($item['feed_title'])?><br><small><em><?=$asOf?></em></small><?php
+        $item = $result->fetchArray(SQLITE3_ASSOC);
+    }
+} else { ?>
+    <p>There are no unread items</p><?php
+} ?>
+</article><?php
+
 page_foot();
+$db->close();

src/user-config.php

@@ -19,5 +19,12 @@ const SECURITY_MODEL = Security::SINGLE_USER;
 /** The name of the database file where users and feeds should be kept */
 const DATABASE_NAME = 'frc.db';
 
+/**
+ * The format for date/time outputs; see https://www.php.net/manual/en/datetime.format.php for acceptable values
+ *
+ * The default, 'F j, Y \a\t g:ia', equates to "August 17, 2023 at 4:45pm"
+ */
+const DATE_TIME_FORMAT = 'F j, Y \a\t g:ia';
+
 // END USER CONFIGURATION ITEMS
 //   (editing below this line is not advised)