[ADD] Estate: Add real estate module

estate/__init__.py

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+from . import models

estate/__manifest__.py

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+{
+    'name': 'Real Estate',
+    'depends': ['base'],
+    'application': True,
+    'data': [
+        'security/ir.model.access.csv',
+        'views/estate_property_views.xml',
+        'views/estate_property_type_views.xml',
+        'views/estate_property_tag_views.xml',
+        'views/estate_property_offer_views.xml',
+        'views/estate_menus.xml',
+        'data/data_type.xml',
+        'data/data_tags.xml',
+        'data/data.xml',
+    ],
+}

estate/data/data.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+
+    <record id="estate_property_list_view_demo_1" model="estate.property">
+        <field name="name">ABC Ltd</field>
+        <field name="property_type_id" ref="estate_property_type_1"/>
+        <field name="tag_ids" eval="[(6, 0, [ref('estate_property_tag_1')])]"/>
+        <field name="postcode">123345</field>
+        <field name="bedrooms">2</field>
+        <field name="living_area">135765</field>
+        <field name="expected_price">5820000</field>
+        <field name="selling_price">0</field>
+        <field name="date_availability" eval="(datetime.today() + relativedelta(months=3)).strftime('%Y-%m-%d')"/>
+    </record>
+
+    <record id="estate_property_list_view_demo_2" model="estate.property">
+        <field name="name">XYZ Pvt Ltd</field>
+        <field name="property_type_id" ref="estate_property_type_2"/>
+        <field name="tag_ids" eval="[(6, 0, [ref('estate_property_tag_1')])]"/>
+        <field name="postcode">7865445</field>
+        <field name="bedrooms">4</field>
+        <field name="living_area">100000</field>
+        <field name="expected_price">200000</field>
+        <field name="selling_price">0</field>
+        <field name="date_availability" eval="(datetime.today() + relativedelta(months=3)).strftime('%Y-%m-%d')"/>
+    </record>
+
+    <record id="estate_property_list_view_demo_3" model="estate.property">
+        <field name="name">Umbrella Corp</field>
+        <field name="property_type_id" ref="estate_property_type_4"/>
+        <field name="tag_ids" eval="[(6, 0, [ref('estate_property_tag_3')])]"/>
+        <field name="postcode">908765</field>
+        <field name="bedrooms">3</field>
+        <field name="living_area">100000</field>
+        <field name="expected_price">700000</field>
+        <field name="selling_price">0</field>
+        <field name="date_availability" eval="(datetime.today() + relativedelta(months=3)).strftime('%Y-%m-%d')"/>
+    </record>
+
+</odoo>

estate/data/data_tags.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <record id="estate_property_tag_1" model="estate.property.tag">
+        <field name="name">Cozy</field>
+    </record>
+    <record id="estate_property_tag_2" model="estate.property.tag">
+        <field name="name">Furnished</field>
+    </record>
+    <record id="estate_property_tag_3" model="estate.property.tag">
+        <field name="name">Renovated</field>
+    </record>
+    <record id="estate_property_tag_4" model="estate.property.tag">
+        <field name="name">Unfurnished</field>
+    </record>
+    <record id="estate_property_tag_5" model="estate.property.tag">
+        <field name="name">Semi-furnished</field>
+    </record>
+</odoo>

estate/data/data_type.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <record id="estate_property_type_1" model="estate.property.type">
+        <field name="name">House</field>
+    </record>
+    <record id="estate_property_type_2" model="estate.property.type">
+        <field name="name">Apartment</field>
+    </record>
+    <record id="estate_property_type_3" model="estate.property.type">
+        <field name="name">Penthouse</field>
+    </record>
+    <record id="estate_property_type_4" model="estate.property.type">
+        <field name="name">Villa</field>
+    </record>
+    <record id="estate_property_type_5" model="estate.property.type">
+        <field name="name">Boat House</field>
+    </record>
+    <record id="estate_property_type_6" model="estate.property.type">
+        <field name="name">Mansion</field>
+    </record>
+</odoo>

estate/models/__init__.py

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+from . import estate_property
+from . import estate_property_type
+from . import estate_property_tag
+from . import estate_property_offer

estate/models/estate_property.py

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+from datetime import timedelta
+
+from odoo import api, fields, models
+from odoo.exceptions import UserError
+
+
+class EstateProperty(models.Model):
+    _name = "estate.property"
+    _description = "Real Estate Property"
+
+    def _default_availability_date(self):
+        return fields.Date.today() + timedelta(days=90)
+
+    name = fields.Char(required=True)
+    description = fields.Text()
+    postcode = fields.Char()
+    property_type_id = fields.Many2one(
+        "estate.property.type",
+        string="Property Type",
+    )
+    tag_ids = fields.Many2many(
+        "estate.property.tag",
+        string="Tags",
+    )
+    buyer_id = fields.Many2one(
+        "res.partner",
+        string="Buyer",
+        copy=False,
+    )
+    salesperson_id = fields.Many2one(
+        "res.users",
+        string="Salesperson",
+        default=lambda self: self.env.user,
+    )
+    offer_ids = fields.One2many(
+        "estate.property.offer",
+        "property_id",
+        string="Offers",
+    )
+    date_availability = fields.Date(
+        copy=False,
+        default=lambda self: fields.Datetime.now() + timedelta(days=90),
+    )
+    expected_price = fields.Float(required=True)
+    selling_price = fields.Float(
+        readonly=True,
+        copy=False,
+    )
+    bedrooms = fields.Integer(
+        default=2,
+    )
+    facades = fields.Integer()
+    garage = fields.Boolean()
+    living_area = fields.Integer()
+    garden = fields.Boolean()
+    garden_area = fields.Integer()
+    total_area = fields.Integer(
+        compute="_compute_total_area",
+    )
+    best_price = fields.Float(
+        compute="_compute_best_price",
+    )
+    garden_orientation = fields.Selection([
+        ('north', 'North'),
+        ('south', 'South'),
+        ('east', 'East'),
+        ('west', 'West'),
+    ])
+    active = fields.Boolean(
+        default=True,
+    )
+    state = fields.Selection(
+        [
+            ('new', 'New'),
+            ('offer_received', 'Offer Received'),
+            ('offer_accepted', 'Offer Accepted'),
+            ('sold', 'Sold'),
+            ('cancelled', 'Cancelled'),
+        ],
+        required=True,
+        copy=False,
+        default='new',
+        readonly=True,
+    )
+
+    @api.depends("living_area", "garden_area")
+    def _compute_total_area(self):
+        for property in self:
+            property.total_area = (
+                property.living_area +
+                property.garden_area
+            )
+
+    @api.depends("offer_ids.price")
+    def _compute_best_price(self):
+        for property in self:
+            prices = property.offer_ids.mapped("price")
+            property.best_price = max(prices) if prices else 0.0
+
+    @api.onchange("garden")
+    def _onchange_garden(self):
+        if self.garden:
+            self.garden_area = 10
+            self.garden_orientation = "north"
+        else:
+            self.garden_area = 0
+            self.garden_orientation = False
+
+    # Mark the property as sold
+    def action_sold(self):
+        for property in self:
+            # A cancelled property cannot be sold
+            if property.state == "cancelled":
+                raise UserError(
+                    "Cancelled properties cannot be sold."
+                )
+            property.state = "sold"
+        return True
+
+    # Mark the property as cancelled
+    def action_cancel(self):
+        for property in self:
+            # A sold property cannot be cancelled
+            if property.state == "sold":
+                raise UserError(
+                    "Sold properties cannot be cancelled."
+                )
+            property.state = "cancelled"
+        return True

estate/models/estate_property_offer.py

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+from datetime import timedelta
+
+from odoo import api, fields, models
+from odoo.exceptions import UserError
+
+
+class EstatePropertyOffer(models.Model):
+    _name = "estate.property.offer"
+    _description = "Real Estate Property Offer"
+
+    price = fields.Float()
+    validity = fields.Integer(
+        default=7,
+    )
+    date_deadline = fields.Date(
+        compute="_compute_date_deadline",
+        inverse="_inverse_date_deadline",
+    )
+    status = fields.Selection(
+        [
+            ("accepted", "Accepted"),
+            ("refused", "Refused"),
+        ],
+        copy=False,
+    )
+    partner_id = fields.Many2one(
+        "res.partner",
+        required=True,
+    )
+    property_id = fields.Many2one(
+        "estate.property",
+        required=True,
+    )
+
+    @api.depends("create_date", "validity")
+    def _compute_date_deadline(self):
+        for offer in self:
+            create_date = (
+                offer.create_date.date()
+                if offer.create_date
+                else fields.Date.today()
+            )
+            offer.date_deadline = (
+                create_date +
+                timedelta(days=offer.validity)
+            )
+
+    def _inverse_date_deadline(self):
+        for offer in self:
+            create_date = (
+                offer.create_date.date()
+                if offer.create_date
+                else fields.Date.today()
+            )
+            if offer.date_deadline:
+                offer.validity = (
+                    offer.date_deadline - 
+                    create_date
+                ).days
+
+    # Accept the offer 
+    def action_accept(self):
+        for offer in self:
+            # Check if another offer for this property has already been accpted
+            if offer.property_id.offer_ids.filtered(
+                lambda o: o.status == "accepted" and o.id != offer.id
+            ):
+                raise UserError(
+                    "Another offer for this property has already been accepted."
+                )
+            # Set the status to "accepted"
+            offer.status = "accepted"
+            # Updating the related property fields
+            offer.property_id.write({
+                "buyer_id": offer.partner_id.id,
+                "selling_price": offer.price,
+                "state": "offer_accepted",
+            })
+        return True
+
+    # Refuse the offer and set the status to "refused"
+    def action_refuse(self):
+        for offer in self:
+            offer.status = "refused"
+        return True
+
+    @api.model_create_multi
+    def create(self, vals_list):
+        offers = super().create(vals_list)
+        for offer in offers:
+            if offer.property_id.state == "new":
+                offer.property_id.state = "offer_received"
+        return offers

estate/models/estate_property_tag.py

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+from odoo import fields, models
+
+
+class EstatePropertyTag(models.Model):
+    _name = "estate.property.tag"
+    _description = "Real Estate Property Tag"
+
+    name = fields.Char(required=True)

estate/models/estate_property_type.py

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+from odoo import fields, models
+
+
+class EstatePropertyType(models.Model):
+    _name = "estate.property.type"
+    _description = "Real Estate Property Type"
+
+    name = fields.Char(required=True)

estate/security/ir.model.access.csv

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+id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
+access_estate_property,access_estate_property,model_estate_property,base.group_user,1,1,1,1
+access_estate_property_type,access_estate_property_type,model_estate_property_type,base.group_user,1,1,1,1
+access_estate_property_tag,access_estate_property_tag,model_estate_property_tag,base.group_user,1,1,1,1
+access_estate_property_offer,access_estate_property_offer,model_estate_property_offer,base.group_user,1,1,1,1

estate/views/estate_menus.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+
+    <menuitem
+        id="estate_menu_root"
+        name="Real Estate"
+    />
+
+    <menuitem
+        id="estate_advertisements_menu"
+        name="Advertisements"
+        parent="estate_menu_root"
+    />
+
+    <menuitem
+        id="estate_settings_menu"
+        name="Settings"
+        parent="estate_menu_root" 
+    />
+
+    <menuitem
+       id="estate_property_type_menu_action"
+       name="Property Types"
+       parent="estate_settings_menu" 
+       action="estate_property_type_action"
+    />
+
+    <menuitem
+        id="estate_property_tag_menu_action"
+        name="Property Tags"
+        parent="estate_settings_menu"
+        action="estate_property_tag_action"
+    />
+
+    <menuitem
+        id="estate_property_menu_action"
+        parent="estate_advertisements_menu"
+        action="estate_property_action"
+    />
+
+</odoo>
+