[ADD] installment: added installment app

After this commit:
- implemented installment module
- added wizard button in subscription module
- implemented business logic

Dental/views/dental_medical_aids.xml

@@ -4,7 +4,7 @@
     <record id="action_dental_medical_aids" model="ir.actions.act_window">
         <field name="name">Medical Aids</field>
         <field name="res_model">dental.medical.aids</field>
-        <field name="view_mode">tree,form</field>
+        <field name="view_mode">tree,form</field>   
     </record>
 
     <record id="medicalaids_view_form" model="ir.ui.view">

estate/views/estate_property_views.xml

@@ -48,7 +48,7 @@
                     <field name="state" widget="statusbar"/>
                 </header>
                 <sheet>
-                    <group>
+                    <group>search_default_available
                         <group>
                             <field name="name" />
                             <field name="tag_ids" widget="many2many_tags" options="{'color_field': 'color'}"/>

installments/__init__.py

@@ -0,0 +1,2 @@
+from . import models
+from . import wizard

installments/__manifest__.py

@@ -0,0 +1,16 @@
+{
+    'name': 'Installment Management',
+    'version': '1.0',
+    'category': 'Sales',
+    'author': 'odoo',
+    'depends': ['base', 'sale_subscription'],
+    'data': [
+        'security/ir.model.access.csv',
+        'wizard/action_open_emi_wizard_view.xml',
+        'view/res_config_setting_view.xml',
+        'view/installments_view.xml'
+    ],
+    'installable': True,
+    'application': True,
+    'license': 'LGPL-3'
+}

installments/models/__init__.py

@@ -0,0 +1 @@
+from . import res_config_settings

installments/models/res_config_settings.py

@@ -0,0 +1,12 @@
+from odoo import models, fields
+
+
+class InstallmentSettings(models.TransientModel):
+    _inherit = 'res.config.settings'
+
+    max_duration = fields.Float('Max Duration', config_parameter="installments.max_duration")
+    annual_rate = fields.Float('Annual Rate', config_parameter="installments.annual_rate")
+    down_payment_perc = fields.Float('Down Payment', config_parameter="installments.down_payment_perc")
+    admin_exp_perc = fields.Float('Administrative Expenses', config_parameter="installments.admin_exp_perc")
+    delay_penalty_perc = fields.Float('Delay Penalty', config_parameter="installments.delay_penalty_perc")
+    delay_penalty_process = fields.Integer('Delay Penalty Process', config_parameter="installments.delay_penalty_process")

installments/security/ir.model.access.csv

@@ -0,0 +1,2 @@
+id,name,model_id/id,group_id/id,perm_read,perm_write,perm_create,perm_unlink
+access_installments_settings_base_user,access_installments_settings_base_user,model_action_open_emi_wizard,base.group_user,1,1,1,1

installments/view/installments_view.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <record id="view_order_form_inherited" model="ir.ui.view">
+        <field name="name">sale.order.form.inherited</field>
+        <field name="model">sale.order</field>
+        <field name="inherit_id" ref="sale.view_order_form"/>
+            <field name="arch" type="xml">
+                <xpath expr="//div[@name='so_button_below_order_lines']" position="before">
+                    <button string="Add EMI"
+                        name="%(installments.action_open_emi_wizard)d"
+                        type="action"
+                        class="btn btn-primary"/>
+                </xpath>
+            </field>
+    </record>
+</odoo>

installments/view/res_config_setting_view.xml

@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <record id="res_config_settings_view_form" model="ir.ui.view">
+        <field name="name">res.config.setting.view.form.inherit.installment</field>
+        <field name="model">res.config.settings</field>
+        <field name="inherit_id" ref="base.res_config_settings_view_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//block[@name='companies_setting_container']" position="after">
+                <block title="Installment Process" id="installment_general_settings">
+                    <setting id="max_duration_setting" help="Define your Max duration">
+                        <field name="max_duration"/>
+                        <a>Years</a>
+                    </setting>
+                    <setting id="annual_rate_percentage_setting" help="Define the Annual Rate Percentage">
+                        <field name="annual_rate"/>
+                        <a>%Per Year</a>
+                    </setting>
+                    <setting id="down_payment_percentage_setting" help="Define the Down Payment Percentage">
+                        <field name="down_payment_perc"/>
+                        <a>%From Product Price</a>
+                    </setting>
+                    <setting id="administrative_expense_percentage_setting" help="Define the Administrative Expense Percentage">
+                        <field name="admin_exp_perc"/>
+                        <a>%From Amount After D.Payment</a>
+                    </setting>
+                    <setting id="delay_penalty_percentage_setting" help="Define the Delay Penalty Percentage">
+                        <field name="delay_penalty_perc"/>
+                        <a>%From Monthly Amount</a>
+                    </setting>
+                    <setting id="delay_penalty_process_setting" help="Define the Delay Penalty Process">
+                        <field name="delay_penalty_process"/>
+                        <a>Days</a>
+                        <br>
+                            <help>
+                                help="Define the Delay Penalty Process"
+                            </help>    
+                        </br>
+                    </setting>
+                </block>
+            </xpath>
+        </field>
+    </record>
+</odoo>

installments/wizard/__init__.py

@@ -0,0 +1 @@
+from . import action_open_emi_wizard

installments/wizard/action_open_emi_wizard.py

@@ -0,0 +1,42 @@
+from odoo import models, fields, api
+
+
+class ActionOpenEmiWizard(models.TransientModel):
+    _name = 'action.open.emi.wizard'
+    _description = 'Installment Settings'
+
+    total_so_amount = fields.Float(string="Total SO Amount")
+    down_payment = fields.Float(string="Down Payment", compute="_compute_values")
+    remaining_amount = fields.Float(string="Remaining Amount", compute="_compute_values")
+    remaining_amount2 = fields.Float(string="Remaining Amount", compute="_compute_values")
+    interest = fields.Float(string="Interest", compute="_compute_values")
+    admin_expence = fields.Float(string="Administrative Expense", compute="_compute_values")
+    num_installments = fields.Integer(string="Number of Monthly Installments", compute="_compute_values")
+    installment_amount = fields.Float(string="Installment Amount", compute="_compute_values")
+
+    def default_get(self, fields_list):
+        defaults = super().default_get(fields_list)
+        defaults['total_so_amount'] = self.env['sale.order'].browse(self.env.context.get('active_id')).amount_total
+        return defaults
+
+    @api.depends("total_so_amount")
+    def _compute_values(self):
+        for rec in self:
+            down_payment_percent = self.env['ir.config_parameter'].get_param('installments.down_payment_perc')
+            x = float(rec.total_so_amount) * float(down_payment_percent)
+            rec.down_payment = x / 100
+            rec.remaining_amount = rec.total_so_amount - rec.down_payment
+            administrative_expense_percent = self.env['ir.config_parameter'].get_param('installments.admin_exp_perc')
+            y = float(rec.remaining_amount) * float(administrative_expense_percent)
+            rec.admin_expence = y / 100
+            rec.remaining_amount2 = rec.remaining_amount + rec.admin_expence
+            annual_rate_percent = self.env['ir.config_parameter'].get_param('installments.annual_rate')
+            z = float(rec.remaining_amount2) * float(annual_rate_percent)
+            rec.interest = z / 100
+            nof_install = float(self.env['ir.config_parameter'].get_param('installments.max_duration'))
+            rec.num_installments = nof_install * 12
+            final_amount = rec.remaining_amount2 + rec.interest
+            rec.installment_amount = final_amount / rec.num_installments
+
+    def add_installment(self):
+        pass

installments/wizard/action_open_emi_wizard_view.xml

@@ -0,0 +1,32 @@
+<odoo>
+    <record id="open_emi_wizard_form" model="ir.ui.view">
+        <field name="name">action.open.emi.form</field>
+        <field name="model">action.open.emi.wizard</field>
+        <field name="arch" type="xml">
+            <form string="EMI">
+                <group>
+                    <field name="total_so_amount"/>
+                    <field name="down_payment"/>
+                    <field name="remaining_amount"/>
+                    <field name="interest"/>
+                    <field name="num_installments"/>
+                    <field name="installment_amount"/>
+                </group>
+                <footer>
+                    <button string="Add EMI Installment" type="object" name="add_installment" class="btn-primary"/>
+                </footer>
+            </form>
+        </field>
+    </record> 
+    <odoo>
+        <!-- Action to open the wizard -->
+        <record id="action_open_emi_wizard" model="ir.actions.act_window">
+            <field name="name">Add EMI</field>
+            <field name="res_model">action.open.emi.wizard</field>
+            <field name="view_mode">form</field>
+            <field name="view_id" ref="open_emi_wizard_form"/>
+            <field name="target">new</field>
+        </record>
+    </odoo>
+
+</odoo>