Social becomes a section instead of document property

First it changes the entries to categories. That is CV_ENV is now category
for everything. Then cventry continues to behave as before, but CATEGORY
social comes in.

For the moment it creates a formatted block

ox-hugocv.el

@@ -47,9 +47,6 @@
     (:homepage "HOMEPAGE" nil nil parse)
     (:address "ADDRESS" nil nil newline)
     (:photo "PHOTO" nil nil parse)
-    (:gitlab "GITLAB" nil nil parse)
-    (:github "GITHUB" nil nil parse)
-    (:linkedin "LINKEDIN" nil nil parse)
     (:with-email nil "email" t t)
     )
   :translate-alist '((headline . org-hugocv-headline)
@@ -80,6 +77,42 @@ as a communication channel."
 contents)))
 
 
+(defun social-entry (icon url handle)
+  (let* ((nw-handle (string-trim handle))
+         (icon-wrap (if (org-string-nw-p icon) (concat (format "<i class=\"fa %s\"> " icon) "%s</i>") "%s"))
+         (link-wrap (format "<a href=\"%s/%s\">%s</a>" url nw-handle icon-wrap))
+
+         )
+    (format link-wrap nw-handle)))
+
+(defun org-hugocv--format-socialchannels (headline contents info)
+  (let* ((channel (downcase (org-export-data (org-element-property :title headline) info)))
+
+        (entry (-any (lambda (network) (when (string-match-p channel (plist-get network :url))
+                                         (social-entry (plist-get network :icon) (plist-get network :url) contents)))
+                     '((:url "https://www.github.com" :icon "fa-github")
+                       (:url "https://www.gitlab.com" :icon "fa-gitlab")
+                       (:url "https://www.linkedin.com/in" :icon "fa-linkedin")
+                       (:url "https://www.linkedin.com/in" :icon "fa-linkedin")
+                       (:url "https://twitter.com" :icon "fa-twitter")
+                       (:url "https://facebook.com" :icon "fa-facebook")
+                       (:url "https://www.instagram.com" :icon "fa-instagram"))
+
+                     )))
+
+    (cond
+     (entry entry)
+     ((org-element-property :URL headline)
+      (let ((icon (org-export-data (org-element-property :ICON headline) info))
+            (url (org-export-data (org-element-property :URL headline) info))
+            (handle (org-export-data contents info))
+            )
+        (concat (if (org-string-nw-p icon)
+                  ""
+                  (concat (org-export-data (org-element-property :title headline) info) " : "))
+                (social-entry icon url handle))))
+     ((org-export-with-backend 'hugo headline contents info)))
+  ))
 
 ;;;; Headline
 (defun org-hugocv-headline (headline contents info)
@@ -87,12 +120,14 @@ contents)))
 CONTENTS is the contents of the headline.  INFO is a plist used
 as a communication channel."
   (unless (org-element-property :footnote-section-p headline)
-    (let ((environment (let ((env (org-element-property :CV_ENV headline)))
+    (let ((environment (let ((env (org-export-get-category headline info)))
                          (or (org-string-nw-p env) "block"))))
       (cond
        ;; is a cv entry
        ((equal environment "cventry")
         (org-hugocv--format-cventry headline contents info))
+       ((equal environment "social")
+        (org-hugocv--format-socialchannels headline contents info))
        ((org-export-with-backend 'hugo headline contents info))))))
 
 (defun org-hugocv-inner-template (contents info)
@@ -108,25 +143,6 @@ holding export options."
             ;; homepage
             (let ((homepage (org-export-data (plist-get info :homepage) info)))
               (when (org-string-nw-p homepage) (format "<li class=\"fa fa-globe\"><a href=\"https://%s\"> %s</a></li>\n" homepage homepage)))
-            ;; social media
-            (mapconcat (lambda (social-network)
-
-                         (let ((network (org-export-data
-                                         (plist-get info (car social-network))
-
-                                                         info)))
-
-                           (when (org-string-nw-p network)
-                             (format "<li class=\"fa fa-%s\"><a href=\"https://%s/%s\"> %s</a></li>\n"
-                                                (nth 1 social-network)
-                                                (nth 2 social-network)
-                                                network
-                                                network))))
-
-                        '((:github "github" "www.github.com")
-                        (:gitlab "gitlab" "www.gitlab.com")
-                        (:linkedin "linkedin" "www.linkedin.com/in"))
-                        "")
             "</ul>\n\n"
             (org-hugo-inner-template contents info)))