From 6600f542e2235b19ca805ce1fa1dfdf4d06584ee Mon Sep 17 00:00:00 2001
From: Orestis Moresis <o.moresis@hcmr.gr>
Date: Fri, 23 Jun 2023 13:58:22 +0300
Subject: [PATCH] fix guest login

---
 src/Controllers/AuthController.php | 17 ++++++++++++++---
 src/Services/PgSql.php             | 19 +++++++++++++++++++
 2 files changed, 33 insertions(+), 3 deletions(-)

diff --git a/src/Controllers/AuthController.php b/src/Controllers/AuthController.php
index 5f3db1d..c96ad24 100644
--- a/src/Controllers/AuthController.php
+++ b/src/Controllers/AuthController.php
@@ -24,12 +24,12 @@ class AuthController {
 
         // Handle guest login
         if (!isset($_POST['password'])) {
-            $_SESSION['user_id'] = guidv4($email);
             $_SESSION['user_groups'] = [1];
             $_SESSION['user_name'] = "Guest";
+            $_SESSION['user_id'] = self::insertGuestUser($email);
             /* header('HTTP/1.1 302 Found'); */
-            header('Location: /home');
-            /* return TRUE; */
+            header('Location: /');
+            return TRUE;
         } else { // handle user login
             $email = $_POST['username'];
             $password = $_POST['password'];
@@ -85,6 +85,17 @@ class AuthController {
        exit();
        /* header('Refresh: 2; URL = index.php'); */
     }
+
+
+    private function insertGuestUser($email) {
+      $uid = guidv4($email);
+      $sql = "INSERT INTO webapp.users (email, password, origin, geo_id)
+              VALUES ('${email}', '', 'GUEST', '${uid}')
+              ON CONFLICT (email) DO UPDATE
+              SET geo_id = EXCLUDED.geo_id,
+                  last_login = now()";
+      return json_decode(PgSql::insert($sql, 'geo_id'))->geo_id;
+    }
 }
 
 
diff --git a/src/Services/PgSql.php b/src/Services/PgSql.php
index 187d233..90aaadf 100644
--- a/src/Services/PgSql.php
+++ b/src/Services/PgSql.php
@@ -101,6 +101,25 @@ class PgSql
         return json_encode($response);
     }
 
+    // For UPSERT
+    // Returns one or more columns of the successful insert
+    public static function upsert($sql, $conf, $exc, ...$ret)
+    {
+      $excluded_columns = implode(',', $exc);
+        if ($ret != 'NULL') {
+            $sql = rtrim($sql, ';');
+            $sql .= "\nON CONFLICT (${conf}) DO UPDATE
+                        SET ";
+            $sql .= ' RETURNING ';
+            $sql .= implode(',', $ret);
+        }
+        echo $sql;
+        $result = pg_query(self::$db, $sql);
+        if (pg_last_error()) exit(pg_last_error());
+            $response = pg_fetch_object($result);
+        return json_encode($response);
+    }
+
     // For UPDATE, DELETE and CREATE TABLE
     // Returns number of affected rows
     public static function exec($sql)