From 10b150112ea7b0e894419ce3351c17ac9e8e0cd7 Mon Sep 17 00:00:00 2001
From: squidfunk <martin.donath@squidfunk.com>
Date: Mon, 10 Jul 2023 17:53:51 +0100
Subject: [PATCH] Improved error reporting in social plugin

---
 material/plugins/social/plugin.py | 16 ++++++++++++++++
 src/plugins/social/plugin.py      | 16 ++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/material/plugins/social/plugin.py b/material/plugins/social/plugin.py
index 565ab00a2..de16f6098 100644
--- a/material/plugins/social/plugin.py
+++ b/material/plugins/social/plugin.py
@@ -188,6 +188,22 @@ class SocialPlugin(BasePlugin[SocialPluginConfig]):
         if "description" in page.meta:
             description = page.meta["description"]
 
+        # Check type of meta title - see https://t.ly/m1Us
+        if not isinstance(title, str):
+            log.error(
+                f"Page meta title of page '{page.file.src_uri}' must be a "
+                f"string, but is of type \"{type(title)}\"."
+            )
+            sys.exit(1)
+
+        # Check type of meta description - see https://t.ly/m1Us
+        if not isinstance(description, str):
+            log.error(
+                f"Page meta description of '{page.file.src_uri}' must be a "
+                f"string, but is of type \"{type(description)}\"."
+            )
+            sys.exit(1)
+
         # Generate social card if not in cache - TODO: values from mkdocs.yml
         hash = md5("".join([
             site_name,
diff --git a/src/plugins/social/plugin.py b/src/plugins/social/plugin.py
index 565ab00a2..de16f6098 100644
--- a/src/plugins/social/plugin.py
+++ b/src/plugins/social/plugin.py
@@ -188,6 +188,22 @@ class SocialPlugin(BasePlugin[SocialPluginConfig]):
         if "description" in page.meta:
             description = page.meta["description"]
 
+        # Check type of meta title - see https://t.ly/m1Us
+        if not isinstance(title, str):
+            log.error(
+                f"Page meta title of page '{page.file.src_uri}' must be a "
+                f"string, but is of type \"{type(title)}\"."
+            )
+            sys.exit(1)
+
+        # Check type of meta description - see https://t.ly/m1Us
+        if not isinstance(description, str):
+            log.error(
+                f"Page meta description of '{page.file.src_uri}' must be a "
+                f"string, but is of type \"{type(description)}\"."
+            )
+            sys.exit(1)
+
         # Generate social card if not in cache - TODO: values from mkdocs.yml
         hash = md5("".join([
             site_name,