fix: Missing Title and Metadata (#2770)

* add document title to server spa meta

* removed conflicting useMeta

* replaced head with useMeta

* formalized metadata injection

* small injection refactor

* added tests

* added missing global tag

* fixed setting tab title for logged-in users

* simplified metadata update

* remove duplicate tag and fix for foreign users

* add metadata for shared recipes

* added default recipe image

* fixed shared URL

---------

Co-authored-by: Kuchenpirat <24235032+Kuchenpirat@users.noreply.github.com>

tests/integration_tests/test_spa.py

@@ -0,0 +1,70 @@
+from bs4 import BeautifulSoup
+
+from mealie.routes.spa import MetaTag, inject_meta, inject_recipe_json
+from tests import data as test_data
+from tests.utils.factories import random_string
+
+
+def test_spa_metadata_injection():
+    fp = test_data.html_mealie_recipe
+    with open(fp) as f:
+        soup = BeautifulSoup(f, "lxml")
+        assert soup.html and soup.html.head
+
+        tags = soup.find_all("meta")
+        assert tags
+
+        title_tag = None
+        for tag in tags:
+            if tag.get("data-hid") == "og:title":
+                title_tag = tag
+                break
+
+        assert title_tag and title_tag["content"]
+
+        new_title_tag = MetaTag(hid="og:title", property_name="og:title", content=random_string())
+        new_arbitrary_tag = MetaTag(hid=random_string(), property_name=random_string(), content=random_string())
+        new_html = inject_meta(str(soup), [new_title_tag, new_arbitrary_tag])
+
+    # verify changes were injected
+    soup = BeautifulSoup(new_html, "lxml")
+    assert soup.html and soup.html.head
+
+    tags = soup.find_all("meta")
+    assert tags
+
+    title_tag = None
+    for tag in tags:
+        if tag.get("data-hid") == "og:title":
+            title_tag = tag
+            break
+
+    assert title_tag and title_tag["content"] == new_title_tag.content
+
+    arbitrary_tag = None
+    for tag in tags:
+        if tag.get("data-hid") == new_arbitrary_tag.hid:
+            arbitrary_tag = tag
+            break
+
+    assert arbitrary_tag and arbitrary_tag["content"] == new_arbitrary_tag.content
+
+
+def test_spa_recipe_json_injection():
+    recipe_name = random_string()
+    schema = {
+        "@context": "https://schema.org",
+        "@type": "Recipe",
+        "name": recipe_name,
+    }
+
+    fp = test_data.html_mealie_recipe
+    with open(fp) as f:
+        soup = BeautifulSoup(f, "lxml")
+        assert "https://schema.org" not in str(soup)
+
+        html = inject_recipe_json(str(soup), schema)
+
+    assert "@context" in html
+    assert "https://schema.org" in html
+    assert recipe_name in html