fix Link internal check

src/components/core/Link.tsx

 // From https://www.gatsbyjs.com/docs/reference/built-in-components/gatsby-link/
 
 import React from "react"
-import { Link as GatsbyLink } from "gatsby"
-
+import { graphql, useStaticQuery, Link as GatsbyLink } from "gatsby"
 
 interface Props {
     children?: React.ReactNode
     to: string
     activeClassName?: string
     partiallyActive?: any
-    onClick?:any
+    onClick?: any
     className?: any
 }
 
@@ -25,34 +24,44 @@ const Link = ({
     className,
     ...other
 }: Props) => {
-    // Si commence par http
-    // Si contient
-    //    geoportal | geonetwork | metabase | ...
-
-    // Basé sur les données de l'api grapgql = liste des pages ?
+    // Basé sur les données de l'API GraphQL = liste des pages
+    const data = useStaticQuery(graphql`
+        query appPages {
+            allSitePage {
+                nodes {
+                    path
+                }
+            }
+        }
+    `)
 
-    // Tailor the following test to your environment.
-    // This example assumes that any internal link (intended for Gatsby)
-    // will start with exactly one slash, and that anything else is external.
-    const internal = /^\/(?!\/)/.test(to)
+    // /^https?:\/\//
+    // Si "to" n'est pas dans la liste des pages, c'est un lien externe
+    // ignore le "/" à la fin du 'path' et de 'to'
+    const internal = data.allSitePage.nodes.find(
+        ({ path }) => path.replace(/\/+$/, "") === to.replace(/\/+$/, "")
+    )
 
     // Use Gatsby Link for internal links, and <a> for others
     if (internal) {
+        // console.log("Internal", to)
         return (
             <GatsbyLink
                 to={to}
                 activeClassName={activeClassName}
                 partiallyActive={partiallyActive}
                 onClick={onClick}
-                className = {className}
+                className={className}
                 {...other}
             >
                 {children}
             </GatsbyLink>
         )
     }
+
+    // console.log("External", to)
     return (
-        <a href={to} {...other} onClick={onClick} className = {className}>
+        <a href={to} {...other} onClick={onClick} className={className}>
             {children}
         </a>
     )