from odoo import api, fields, models, _
from odoo.exceptions import ValidationError

class StockQuant(models.Model):
    _inherit = 'stock.quant'

    force_inventory_date = fields.Date(
        string="Force Inventory Date",
        help="Choose a specific date for the inventory adjustment. "
             "If set, the stock move will be created with this date."
    )
    force_valuation_date = fields.Date(
        string="Force Valuation Date",
        help="Choose a specific date for the stock valuation. "
             "If set, the valuation layer will be created with this date."
    )

    @api.model
    def _get_inventory_fields_create(self):
        """ Allow the new fields to be set during inventory creation """
        res = super(StockQuant, self)._get_inventory_fields_create()
        res += ['force_inventory_date', 'force_valuation_date']
        return res

    @api.model
    def _get_inventory_fields_write(self):
        """ Allow the new fields to be set during inventory write """
        res = super(StockQuant, self)._get_inventory_fields_write()
        res += ['force_inventory_date', 'force_valuation_date']
        return res

    def _apply_inventory(self):
        """Override to pass forced dates to the context"""
        # We need to handle quants with different forced dates separately
        # Group by (force_inventory_date, force_valuation_date)
        # If no forced date, key is (False, False)
        
        grouped_quants = {}
        for quant in self:
            key = (quant.force_inventory_date, quant.force_valuation_date)
            if key not in grouped_quants:
                grouped_quants[key] = self.env['stock.quant']
            grouped_quants[key] |= quant
            
        for (force_inventory_date, force_valuation_date), quants in grouped_quants.items():
            ctx = dict(self.env.context)
            if force_inventory_date:
                ctx['force_inventory_date'] = force_inventory_date
            if force_valuation_date:
                ctx['force_valuation_date'] = force_valuation_date
            
            super(StockQuant, quants.with_context(ctx))._apply_inventory()