[FIX] delivery: handle multiple references in delivery email

Steps to reproduce:
- install sales and easypost shipping
- have a delivery order of multiple packages with easypost
- click "send confirmation email"

previous behavior:
the template does not handle multiple package references
and the associated link is wrong

current behavior:
each reference is set in a separated link

opw-2167037

closes odoo/odoo#45507

X-original-commit: 65eaa3e7daf0b547ae2bb98e335fc5941cb200a6
Signed-off-by: mightyjol <jhk-odoo@users.noreply.github.com>

addons/delivery/models/stock_picking.py

@@ -109,6 +109,13 @@ class StockPicking(models.Model):
             else:
                 picking.return_label_ids = False
 
+    def get_multiple_carrier_tracking(self):
+        self.ensure_one()
+        try:
+            return json.loads(self.carrier_tracking_url)
+        except ValueError:
+            return False
+
     @api.depends('move_lines')
     def _cal_weight(self):
         for picking in self:

addons/stock/data/mail_template_data.xml

@@ -14,7 +14,14 @@
             Your tracking reference is
             <strong>
             %if object.carrier_tracking_url:
-                <a href="${object.carrier_tracking_url}" target="_blank">${object.carrier_tracking_ref}</a>.
+                % set multiple_carrier_tracking = object.get_multiple_carrier_tracking()
+                %if multiple_carrier_tracking:
+                    % for line in multiple_carrier_tracking:
+                        <br/><a href="${line[1]}" target="_blank">${line[0]}</a>
+                    % endfor
+                %else:
+                    <a href="${object.carrier_tracking_url}" target="_blank">${object.carrier_tracking_ref}</a>.
+                %endif
             %else:
                 ${object.carrier_tracking_ref}.
             %endif

addons/stock/i18n/stock.pot

@@ -204,7 +204,14 @@ msgid ""
 "            Your tracking reference is\n"
 "            <strong>\n"
 "            %if object.carrier_tracking_url:\n"
-"                <a href=\"${object.carrier_tracking_url}\" target=\"_blank\">${object.carrier_tracking_ref}</a>.\n"
+"                % set multiple_carrier_tracking = object.get_multiple_carrier_tracking()\n"
+"                %if multiple_carrier_tracking:\n"
+"                    % for line in multiple_carrier_tracking:\n"
+"                        <br/><a href=\"${line[1]}\" target=\"_blank\">${line[0]}</a>\n"
+"                    % endfor\n"
+"                %else:\n"
+"                    <a href=\"${object.carrier_tracking_url}\" target=\"_blank\">${object.carrier_tracking_ref}</a>.\n"
+"                %endif\n"
 "            %else:\n"
 "                ${object.carrier_tracking_ref}.\n"
 "            %endif\n"