[ADD] estate:Create first Estate module

estate_account/__init__.py

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+from . import models

estate_account/__manifest__.py

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+{
+    "name": "estate.account",
+    "depends": ["base", "account", "realestate"],
+    "data": [
+        "security/ir.model.access.csv",
+    ],
+    "application": True,
+    "installable": True,
+}

estate_account/models/__init__.py

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+from . import estate_account
+from . import realestate

estate_account/models/estate_account.py

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+from odoo import fields, models
+
+
+class EstateAccount(models.Model):
+    _name = "estate.account"
+    name = fields.Char(required=True)

estate_account/models/realestate.py

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+from odoo import models, fields, Command
+
+
+class Realestate(models.Model):
+    _name = "realestate"
+    _inherit = "realestate"
+
+    def action_set_property_sold(self):
+        self.env["account.move"].create(
+            {
+                "partner_id": super().buyer_id.id,
+                "move_type": "out_invoice",
+                "line_ids": [
+                    Command.create(
+                        {
+                            "name": self.name,
+                            "quantity": 1,
+                            "price_unit": super().selling_price,
+                        }
+                    )
+                ],
+            }
+        )
+        return super().action_set_property_sold()

estate_account/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_account,access.estate_acount,model_estate_account,,1,1,1,1
+access_realestate,access.realestate,model_realestate,,1,1,1,1

realestate/__init__.py

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+from . import models

realestate/__manifest__.py

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+{
+    "name": "realestate",
+    "depends": ["base"],
+    "data": [
+        "security/ir.model.access.csv",
+        "views/estate_view.xml",
+        "views/owner_view.xml",
+        "views/tag_view.xml",
+        "views/seller_view.xml",
+        "views/buyer_view.xml",
+        "views/offer_view.xml",
+        "views/type_view.xml",
+    ],
+    "application": True,
+    "installable": True,
+}

realestate/models/__init__.py

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+from . import realestate
+from . import owner
+from . import types
+from . import tags
+from . import seller
+from . import buyer
+from . import offer

realestate/models/buyer.py

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+from odoo import fields, models
+
+
+class Buyer(models.Model):
+    _name = "buyer"
+
+    name = fields.Char(required=True)
+    properties_ids = fields.One2many("realestate", "buyer_id")

realestate/models/offer.py

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+from odoo import api, fields, models
+from datetime import timedelta
+from odoo.exceptions import UserError
+
+
+class Offer(models.Model):
+    _name = "offer"
+    _order = "price desc"
+    price = fields.Float()
+    status = fields.Selection([("accepted", "Accepted"), ("refused", "Refused")])
+    buyer_id = fields.Many2one("res.partner")
+    property_id = fields.Many2one("realestate")
+    property_type_id = fields.Many2one(related="property_id.type_id")
+    state = fields.Selection(related="property_id.state")
+    validity = fields.Integer()
+    deadline = fields.Date(compute="_compute_deadline", inverse="_inverse_deadline")
+    highest_offer = fields.Float(compute="_calc_highest_price")
+
+    @api.depends("validity")
+    def _compute_deadline(self):
+        for record in self:
+            record.deadline = (
+                record.create_date or fields.Datetime.now()
+            ).date() + timedelta(days=record.validity)
+
+    def _inverse_deadline(self):
+        for record in self:
+            record.validity = (
+                record.deadline - (record.create_date or fields.Datetime.now()).date()
+            ).days
+
+    def set_offer_accepted(self):
+        for record in self:
+            if record.property_id.state == "sold":
+                raise UserError("This property is already sold")
+            record.status = "accepted"
+            record.property_id.selling_price = record.price
+            record.property_id.buyer_id = record.buyer_id
+            record.property_id.state = "offer_accepted"
+
+    def set_offer_refused(self):
+        for record in self:
+            if record.property_id.state == "sold":
+                raise UserError("This property is already sold")
+            self.status = "refused"
+
+    _sql_constraints = [
+        (
+            "check_offer_price",
+            "CHECK(price> 0)",
+            "Offer price must be positive.",
+        )
+    ]
+
+    def create(self, vals):
+        res = super(Offer, self).create(vals)
+
+        if res.price < res.property_id.best_price:
+            raise UserError("Please set a higher price!")
+        return res

realestate/models/owner.py

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+from odoo import fields, models
+
+
+class Owner(models.Model):
+    _name = "owner"
+
+    name = fields.Char(required=True)
+    address = fields.Char()
+    phone = fields.Char()
+    properties_ids = fields.One2many("realestate", "owner_id")

realestate/models/realestate.py

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+from odoo import api, fields, models
+from odoo.exceptions import UserError, ValidationError
+
+
+class Realestate(models.Model):
+    _name = "realestate"
+    _description = "Estate"
+    _order = "type_id"
+    name = fields.Char(required=True)
+    description = fields.Text()
+    postcode = fields.Char()
+    date_availability = fields.Date()
+    expected_price = fields.Float(required=True)
+    selling_price = fields.Float(readonly=True, copy=False)
+    bedrooms = fields.Integer(default=2)
+    living_area = fields.Integer()
+    facades = fields.Integer()
+    garage = fields.Boolean()
+    garden = fields.Boolean()
+    garden_area = fields.Integer()
+
+    garden_orientation = fields.Selection(
+        selection=[
+            ("north", "North"),
+            ("south", "South"),
+            ("east", "East"),
+            ("west", "West"),
+        ],
+    )
+    active = fields.Boolean(default=True)
+    state = fields.Selection(
+        selection=[
+            ("new", "New"),
+            ("offer_received", "Offer Received"),
+            ("offer_accepted", "Offer Accepted"),
+            ("sold", "Sold"),
+            ("cancelled", "Cancelled"),
+        ],
+        default="new",
+    )
+    owner_id = fields.Many2one("buyer")
+    type_id = fields.Many2one("types", widget="handle")
+    tag_ids = fields.Many2many("tags", string="Tags")
+    seller_id = fields.Many2one("seller")
+    buyer_id = fields.Many2one("res.partner")
+    offer_ids = fields.One2many("offer", "property_id")
+    status = fields.Selection(related="offer_ids.status")
+    price = fields.Float(related="offer_ids.price")
+    validity = fields.Integer(related="offer_ids.validity")
+    deadline = fields.Date(related="offer_ids.deadline")
+    total_area = fields.Integer(compute="_compute_total")
+    best_price = fields.Float(compute="_max_offer_price")
+
+    @api.depends("living_area", "garden_area")
+    def _compute_total(self):
+        for record in self:
+            record.total_area = record.living_area + record.garden_area
+
+    @api.depends("offer_ids")
+    def _max_offer_price(self):
+        for record in self:
+            record.best_price = max(record.offer_ids.mapped("price"), default=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 = ""
+
+    def action_set_property_sold(self):
+        for record in self:
+            if record.state == "cancelled":
+                raise UserError("Cancelled properties cannot be sold")
+            record.state = "sold"
+
+    def action_set_property_cancelled(self):
+        for record in self:
+            if record.state == "sold":
+                raise UserError("Sold properties cannot be Cancelled")
+            record.state = "cancelled"
+
+    # def action_set_offer_accepted(self):
+    #     for record in self:
+    #         if record.status
+
+    _sql_constraints = [
+        (
+            "check_expected_price",
+            "CHECK(expected_price> 0)",
+            "Expected price must be positive.",
+        ),
+        (
+            "check_selling_price",
+            "CHECK(selling_price> 0)",
+            "Selling price must be positive.",
+        ),
+        (
+            "check_offer_price",
+            "CHECK(price> 0)",
+            "Offer price must be positive.",
+        ),
+    ]
+
+    @api.constrains("selling_price")
+    def _validate_selling_price(self):
+        for record in self:
+            if record.selling_price < 0.9 * record.expected_price:
+                raise ValidationError(
+                    "Selling price must be at least 90'%' of the expected price"
+                )
+
+    @api.constrains("offer_ids")
+    def _check_for_offers(self):
+        if len(self.offer_ids) > 0:
+            self.state = "offer_received"
+
+    @api.ondelete(at_uninstall=False)
+    def _unlink_new_properties(self):
+        for record in self:
+            if record.state != "new" or record.state != "cancelled":
+                raise UserError("Property cannot be deleted!")

realestate/models/seller.py

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+from odoo import fields, models
+
+
+class Seller(models.Model):
+    _name = "seller"
+
+    name = fields.Char(required=True)
+    properties_ids = fields.One2many("realestate", "seller_id")

realestate/models/tags.py

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+from odoo import fields, models
+
+
+class Tags(models.Model):
+    _name = "tags"
+    _order = "name"
+    name = fields.Char(required=True)
+    color = fields.Integer(string="Color")  # <-- add this

realestate/models/types.py

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+from odoo import api, fields, models
+
+
+class Types(models.Model):
+    _name = "types"
+    _order = "sequence"
+    name = fields.Char(required=True)
+    properties_ids = fields.One2many("realestate", "type_id")
+    sequence = fields.Integer("Sequence", default=1)
+    offer_ids = fields.One2many("offer", "property_type_id")
+    offer_count = fields.Integer(compute="_compute_offer_count")
+
+    @api.depends("offer_ids")
+    def _compute_offer_count(self):
+        for record in self:
+            record.offer_count = len(record.offer_ids)
+
+    _sql_constraints = [
+        (
+            "unique_name",
+            "unique(name)",
+            "Name already exists",
+        ),
+    ]

realestate/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_realestate,access.realestate,model_realestate,,1,1,1,1
+access_owner,access.owner,model_owner,,1,1,1,1
+access_types,access.types,model_types,,1,1,1,1
+access_tags,access.tags,model_tags,,1,1,1,1
+access_seller,access.seller,model_seller,,1,1,1,1
+access_buyer,access.buyer,model_buyer,,1,1,1,1
+access_offer,access.offer,model_offer,,1,1,1,1

realestate/views/buyer_view.xml

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+<odoo>
+
+
+    <record id="buyer_action" model="ir.actions.act_window">
+        <field name="name">Buyer</field>
+        <field name="res_model">buyer</field>
+        <field name="view_mode">list,form</field>
+    </record>
+
+    <menuitem id="real_estate_root_menu" name="Real Estate">
+        <menuitem id="Users_menu" name="Users">
+            <menuitem id="buyer_menu_item" name="Buyers" action="buyer_action" />
+        </menuitem>
+    </menuitem>
+
+
+</odoo>