[ADD] sale_product_kit: introduce configurable kit products

sale_product_kit/__init__.py

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+from . import models
+from . import wizard

sale_product_kit/__manifest__.py

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+{
+    'name': 'Product Kit',
+    'author': 'Ayush Khubchandani (aykhu)',
+    'license': 'LGPL-3',
+    'depends': ["sale", "product"],
+    'data': [
+        'security/ir.model.access.csv',
+        'views/product_views.xml',
+        'views/sale_order_views.xml',
+        'wizard/product_kit_wizard_views.xml',
+    ],
+    'assets': {
+        'web.assets_backend': [
+            'sale_product_kit/static/src/js/product_kit_sale_order_line.js',
+        ],
+    },
+}

sale_product_kit/models/__init__.py

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+from . import product_template
+from . import sale_order_line
+from . import sale_order
+from . import account_move

sale_product_kit/models/account_move.py

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+from odoo import models
+
+
+class AccountMove(models.Model):
+    _inherit = 'account.move'
+
+    def _get_move_lines_to_report(self):
+        lines = super()._get_move_lines_to_report()
+        return lines.filtered(
+            lambda l: (
+                not l.sale_line_ids.is_kit_child
+                or l.sale_line_ids.order_id.print_kit_components
+            )
+        )

sale_product_kit/models/product_template.py

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+from odoo import api, fields, models
+from odoo.exceptions import ValidationError
+
+
+class ProductTemplate(models.Model):
+    _inherit = "product.template"
+
+    is_kit = fields.Boolean()
+    sub_product_ids = fields.Many2many('product.product')
+
+    @api.constrains("sub_product_ids")
+    def _check_no_self_product_reference(self):
+        for record in self:
+            if record.product_variant_id in record.sub_product_ids:
+                raise ValidationError("A product cannot be added as a sub-product in its own kit.")

sale_product_kit/models/sale_order.py

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+from odoo import fields, models
+
+
+class SaleOrder(models.Model):
+    _inherit = 'sale.order'
+
+    print_kit_components = fields.Boolean()
+
+    def _get_order_lines_to_report(self):
+        lines = super()._get_order_lines_to_report()
+        return lines.filtered(
+            lambda l: (
+                not l.is_kit_child
+                or l.order_id.print_kit_components
+            )
+        )

sale_product_kit/models/sale_order_line.py

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+from odoo import fields, models
+
+
+class SaleOrderLine(models.Model):
+    _inherit = "sale.order.line"
+
+    is_kit = fields.Boolean(related='product_template_id.is_kit')
+    parent_kit_line_id = fields.Many2one(
+        "sale.order.line",
+        ondelete="cascade",
+    )
+    child_kit_line_ids = fields.One2many(
+        "sale.order.line",
+        "parent_kit_line_id",
+    )
+    is_kit_child = fields.Boolean()
+    kit_component_price = fields.Float()

sale_product_kit/security/ir.model.access.csv

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+id,name,model_id:id,group_id:id,perm_read,perm_create,perm_write,perm_unlink
+access_product_kit_wizard,access_product_kit_wizard,model_product_kit_wizard,base.group_user,1,1,1,1
+access_product_kit_wizard_line,access_product_kit_wizard_line,model_product_kit_wizard_line,base.group_user,1,1,1,1

sale_product_kit/static/src/js/product_kit_sale_order_line.js

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+import { registry } from "@web/core/registry";
+import {
+    SaleOrderLineListRenderer,
+    SaleOrderLineOne2Many,
+} from "@sale/js/sale_order_line_field/sale_order_line_field";
+
+
+export class ProductKitSaleOrderLineListRenderer extends SaleOrderLineListRenderer {
+
+    isKitChild(record) {
+        return !!record.data.is_kit_child;
+    }
+
+    isKitParent(record){
+        return !!record.data.is_kit;
+    }
+
+    isCellReadonly(column, record) {
+        return super.isCellReadonly(column, record) || (
+            this.isKitChild(record)
+        ) || (
+            this.isKitParent(record)
+        );
+    }
+
+    displayDeleteIcon(record) {
+        return super.displayDeleteIcon(record)
+            && !this.isKitChild(record);
+    }
+}
+
+export class ProductKitSaleOrderLineOne2Many extends SaleOrderLineOne2Many {
+    static components = {
+        ...SaleOrderLineOne2Many.components,
+        ListRenderer: ProductKitSaleOrderLineListRenderer,
+    };
+}
+
+export const productKitSaleOrderLineOne2Many = {
+    ...registry.category("fields").get("sol_o2m"),
+    component: ProductKitSaleOrderLineOne2Many,
+};
+
+registry.category("fields").add(
+    "product_kit_sol_o2m",
+    productKitSaleOrderLineOne2Many
+);

sale_product_kit/views/product_views.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+
+    <record id="product_kit_form_view_inherit_product_template" model="ir.ui.view">
+        <field name="name">product.kit.form.inherit.product.template</field>
+        <field name="model">product.template</field>
+        <field name="priority">5</field>
+        <field name="inherit_id" ref="product.product_template_form_view"/>
+        <field name="arch" type="xml">
+            <xpath expr="//group[@name='group_general']" position="inside">
+                <field name="is_kit"/>
+                <field name="sub_product_ids" widget='many2many_tags' invisible="not is_kit"/>
+            </xpath>
+        </field>
+    </record>
+
+</odoo>

sale_product_kit/views/sale_order_views.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <record id="action_product_kit_wizard" model="ir.actions.act_window">
+        <field name="name">Product Kit Values</field>
+        <field name="res_model">product.kit.wizard</field>
+        <field name="view_mode">form</field>
+        <field name="target">new</field>
+    </record>
+
+    <record id="sale_order_form_view_inherit_product_kit" model="ir.ui.view">
+        <field name="name">sale.order.form.product.kit</field>
+        <field name="model">sale.order</field>
+        <field name="inherit_id" ref="sale.view_order_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//field[@name='order_line']" position="attributes">
+                <attribute name="widget">product_kit_sol_o2m</attribute>
+            </xpath>
+            <xpath expr="//field[@name='order_line']/list/field[@name='currency_id']" position="before">
+                <field name="is_kit_child" column_invisible="True"/>
+            </xpath>
+            <xpath expr="//field[@name='payment_term_id']" position="after">
+                <field name="print_kit_components"/>
+            </xpath>
+            <xpath expr="//field[@name='product_template_id']" position="after">
+                <button
+                    name="%(action_product_kit_wizard)d"
+                    type="action"
+                    icon="fa-flask"
+                    context="{'active_order_line_id': id}"
+                    invisible="not is_kit or state!='draft'"
+                />
+            </xpath>
+        </field>
+    </record>
+
+</odoo>

sale_product_kit/wizard/__init__.py

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+from . import product_kit_wizard

sale_product_kit/wizard/product_kit_wizard.py

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+from odoo import api, fields, models
+
+
+class ProductKitWizard(models.TransientModel):
+    _name = "product.kit.wizard"
+    _description = "Product Kit Wizard"
+
+    @api.model
+    def default_get(self, fields_list):
+        res = super().default_get(fields_list)
+        order_line = self.env['sale.order.line'].browse(
+            self.env.context.get('active_order_line_id')
+        )
+        if order_line.child_kit_line_ids:
+            wizard_lines = [
+                (0, 0, {
+                    'sub_product_id': line.product_id.id,
+                    'quantity': line.product_uom_qty,
+                    'price': line.kit_component_price,
+                })
+                for line in order_line.child_kit_line_ids
+            ]
+        else:
+            wizard_lines = [
+                (0, 0, {
+                    'sub_product_id': sp.id,
+                    'quantity': 1,
+                    'price': sp.lst_price,
+                })
+                for sp in order_line.product_template_id.sub_product_ids
+            ]
+        res.update({
+            'product_id': order_line.product_id.id,
+            'wizard_line_ids': wizard_lines,
+        })
+        return res
+
+    product_id = fields.Many2one('product.product')
+    wizard_line_ids = fields.One2many("product.kit.wizard.line", "wizard_id")
+
+    def add_sub_product_value(self):
+        parent_line = self.env['sale.order.line'].browse(
+            self.env.context.get('active_order_line_id')
+        )
+        total_price = 0
+        existing_children = {
+            line.product_id.id: line
+            for line in parent_line.child_kit_line_ids
+        }
+        create_vals = []
+        for wizard_line in self.wizard_line_ids:
+            total_price = total_price + (wizard_line.price * wizard_line.quantity)
+            product_id = wizard_line.sub_product_id.id
+            existing_child = existing_children.get(product_id)
+            if existing_child:
+                existing_child.write({
+                    'product_uom_qty': wizard_line.quantity,
+                    'price_unit': 0,
+                    'kit_component_price': wizard_line.price,
+                })
+            else:
+                create_vals.append({
+                    'order_id': parent_line.order_id.id,
+                    'product_id': product_id,
+                    'product_uom_qty': wizard_line.quantity,
+                    'kit_component_price': wizard_line.price,
+                    'price_unit': 0,
+                    'parent_kit_line_id': parent_line.id,
+                    'is_kit_child': True,
+                })
+        if create_vals:
+            self.env['sale.order.line'].create(create_vals)
+        parent_line.price_unit = total_price
+        return True
+
+
+class ProductKitWizardLine(models.TransientModel):
+    _name = 'product.kit.wizard.line'
+    _description = 'Product Kit Wizard Lines'
+
+    wizard_id = fields.Many2one('product.kit.wizard')
+    sub_product_id = fields.Many2one('product.product')
+    quantity = fields.Integer(default=1)
+    price = fields.Float()

sale_product_kit/wizard/product_kit_wizard_views.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+
+    <record id='product_kit_wizard_view_form' model='ir.ui.view'>
+        <field name='name'>product.kit.wizard.form</field>
+        <field name='model'>product.kit.wizard</field>
+        <field name="arch" type="xml">
+            <form>
+                <field name="wizard_line_ids">
+                    <list editable="bottom" create="false" delete="false">
+                        <field name="sub_product_id"/>
+                        <field name="quantity"/>
+                        <field name="price"/>
+                    </list>
+                </field>
+                <footer>
+                    <button string="Add" type="object" name="add_sub_product_value" class="btn-primary" data-hotkey="q"/>
+                    <button string="Cancel" class="btn-secondary" special="cancel" data-hotkey="x"/>
+                </footer>
+            </form>
+        </field>
+    </record>
+
+</odoo>