From 108082397c51b1815884d2b08133953703b428a3 Mon Sep 17 00:00:00 2001
From: harlan <harlan@harlanzw.com>
Date: Sun, 14 Jul 2024 21:53:52 +1000
Subject: [PATCH] fix(addons): honour titleTemplate `tagPriority`

Fixes https://github.com/harlan-zw/nuxt-seo/issues/137
---
 .../addons/src/plugins/inferSeoMetaPlugin.ts  |  6 ++-
 test/unhead/hooks/infer-seo-meta.test.ts      | 44 +++++++++++++++++++
 2 files changed, 49 insertions(+), 1 deletion(-)

diff --git a/packages/addons/src/plugins/inferSeoMetaPlugin.ts b/packages/addons/src/plugins/inferSeoMetaPlugin.ts
index e6c34070..a4997c87 100644
--- a/packages/addons/src/plugins/inferSeoMetaPlugin.ts
+++ b/packages/addons/src/plugins/inferSeoMetaPlugin.ts
@@ -29,11 +29,15 @@ export interface InferSeoMetaPluginOptions {
         resolve({ entries }) {
           // need to find the last titleTemplate entry
           let titleTemplate = null
+          let lastWeight = 999
           for (const entry of entries) {
             const inputKey = entry.resolvedInput ? 'resolvedInput' : 'input'
             const input = entry[inputKey]
-            if (typeof input.titleTemplate !== 'undefined')
+            const weight = (typeof input.titleTemplate === 'object' ? input.titleTemplate?.tagPriority : false) || entry.tagPriority || 100
+            if (typeof input.titleTemplate !== 'undefined' && weight <= lastWeight) {
               titleTemplate = input.titleTemplate
+              lastWeight = weight
+            }
           }
 
           for (const entry of entries) {
diff --git a/test/unhead/hooks/infer-seo-meta.test.ts b/test/unhead/hooks/infer-seo-meta.test.ts
index bcf3e853..13da5a70 100644
--- a/test/unhead/hooks/infer-seo-meta.test.ts
+++ b/test/unhead/hooks/infer-seo-meta.test.ts
@@ -32,4 +32,48 @@ describe('hooks', () => {
       </body></html>"
     `)
   })
+
+  it('infer-seo-meta multiple titleTemplates', async () => {
+    const head = useDOMHead({
+      plugins: [
+        InferSeoMetaPlugin(),
+      ],
+    })
+
+    head.push({
+      titleTemplate: {
+        textContent: '%s | 1',
+        tagPriority: 50,
+      },
+      title: 'Hello World',
+      meta: [
+        { name: 'description', content: 'description' },
+      ],
+    })
+
+    head.push({
+      titleTemplate: '%s | 2',
+      title: 'Hello World',
+      meta: [
+        { name: 'description', content: 'description' },
+      ],
+    }, {
+      tagPriority: -5,
+    })
+
+    head.push({
+      titleTemplate: '%s | 3',
+      title: 'Hello World',
+      meta: [
+        { name: 'description', content: 'description' },
+      ],
+    }, {
+      tagPriority: 103,
+    })
+    const dom = await useDelayedSerializedDom()
+    const title = dom.match(/<title>Hello World \| (\d)<\/title>/)?.[1]
+    const ogTitle = dom.match(/<meta property="og:title" content="Hello World \| (\d)">/)?.[1]
+    expect(title).toEqual(ogTitle)
+    expect(title).toEqual(`2`)
+  })
 })