[IMP] sale_coupon: refactor the coupon stages and usability improvement

Fix the layout of logo to the printed coupon.

The traceability of the coupons is not clear. for Ex. coupon is send or not?
should I resend? so updated the stages of the coupon

Now the stages will be like
 -pending(previously reserved) -- hidden by default
 -Valid
 -Sent : updated when mail is sent to customer
 -used
 -expired
 -cancelled : hidden by default(added button to cancel the new coupon)

Cron added to expire coupon automatically.

PS: model sale.coupon do not inherit the thread so instead of message_post
change the state 'sent' from mail_compose_message.

Task-ID: 2027296
Closes #34620

addons/sale_coupon/data/sale_coupon_email_data.xml

@@ -101,5 +101,17 @@
             <field name="auto_delete" eval="True"/>
             <field name="user_signature" eval="False"/>
       </record>
+
+        <record id="expire_coupon_cron" model="ir.cron">
+            <field name="name">Coupon: expire coupon based on date</field>
+            <field name="model_id" ref="sale_coupon.model_sale_coupon"/>
+            <field name="state">code</field>
+            <field name="code">model.cron_expire_coupon()</field>
+            <field name="active" eval="True"/>
+            <field name="user_id" ref="base.user_root"/>
+            <field name="interval_number">1</field>
+            <field name="interval_type">days</field>
+            <field name="numbercall">-1</field>
+        </record>
    </data>
 </odoo>
\ No newline at end of file

addons/sale_coupon/models/__init__.py

 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
+from . import mail_compose_message
 from . import sale_coupon
 from . import sale_coupon_reward
 from . import sale_coupon_rules

addons/sale_coupon/models/sale_coupon.py

@@ -27,16 +27,18 @@ class SaleCoupon(models.Model):
     code = fields.Char(default=_generate_code, required=True, readonly=True)
     expiration_date = fields.Date('Expiration Date', compute='_compute_expiration_date')
     state = fields.Selection([
-        ('reserved', 'Reserved'),
+        ('reserved', 'Pending'),
         ('new', 'Valid'),
-        ('used', 'Consumed'),
-        ('expired', 'Expired')
-        ], required=True, default='new')
+        ('sent', 'Sent'),
+        ('used', 'Used'),
+        ('expired', 'Expired'),
+        ('cancel', 'Cancelled')
+    ], required=True, default='new')
     partner_id = fields.Many2one('res.partner', "For Customer")
     program_id = fields.Many2one('sale.coupon.program', "Program")
     order_id = fields.Many2one('sale.order', 'Order Reference', readonly=True,
         help="The sales order from which coupon is generated")
-    sales_order_id = fields.Many2one('sale.order', 'Applied on order', readonly=True,
+    sales_order_id = fields.Many2one('sale.order', 'Used in', readonly=True,
         help="The sales order on which the coupon is applied")
     discount_line_product_id = fields.Many2one('product.product', related='program_id.discount_line_product_id', readonly=False,
         help='Product used in the sales order to apply the discount.')
@@ -98,6 +100,8 @@ class SaleCoupon(models.Model):
             default_template_id=template.id,
             default_composition_mode='comment',
             custom_layout='mail.mail_notification_light',
+            mark_coupon_as_sent=True,
+            force_email=True,
         )
         return {
             'name': _('Compose Email'),
@@ -109,3 +113,18 @@ class SaleCoupon(models.Model):
             'target': 'new',
             'context': ctx,
         }
+
+    def action_coupon_cancel(self):
+        for coupon in self:
+            coupon.state = 'cancel'
+
+    def cron_expire_coupon(self):
+        self._cr.execute("""
+            SELECT C.id FROM SALE_COUPON as C
+            INNER JOIN SALE_COUPON_PROGRAM as P ON C.program_id = P.id
+            WHERE C.STATE in ('reserved', 'new', 'sent')
+                AND P.validity_duration > 0
+                AND C.create_date + interval '1 day' * P.validity_duration < now()""")
+
+        expired_ids = [res[0] for res in self._cr.fetchall()]
+        self.browse(expired_ids).write({'state': 'expired'})

addons/sale_coupon/views/sale_coupon_views.xml

@@ -30,8 +30,9 @@
         <field name="arch" type="xml">
             <form string="Coupons" create="false" edit="false" delete="false">
                 <header>
-                     <button name="action_coupon_sent" type="object" string="Send by Email" class="oe_highlight"/>
-                    <field name="state" widget="statusbar" statusbar_visible="new,used,expired" context="{'state': state}"/>
+                    <button name="action_coupon_sent" type="object" string="Send by Email" class="oe_highlight" attrs="{'invisible': [('state', 'not in', ['new', 'sent'])]}"/>
+                    <button name="action_coupon_cancel" type="object" string="Cancel" class="oe_highlight" attrs="{'invisible': [('state', '!=', 'new')]}"/>
+                    <field name="state" widget="statusbar" statusbar_visible="new,sent,used,expired" context="{'state': state}"/>
                 </header>
                 <sheet>
                     <group>

addons/sale_coupon/wizard/sale_coupon_generate.py

@@ -42,5 +42,5 @@ class SaleCouponGenerate(models.TransientModel):
     @api.depends('partners_domain')
     def _compute_has_partner_email(self):
         for record in self:
-            domain = expression.AND([safe_eval(record.partners_domain), [('email', '=', False)]])
+            domain = expression.AND([ast.literal_eval(record.partners_domain), [('email', '=', False)]])
             record.has_partner_email = self.env['res.partner'].search_count(domain) == 0