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

class AccountPayment(models.Model):
    _inherit = 'account.payment'

    realization_id = fields.Many2one('hr.expense.realization', string='Originating Realization', readonly=True)

    def action_post(self):
        """
        Confirmation bypass. Calls standard post with skip flag.
        """
        # Identify payments that would normally be locked by hr_expense
        locked_payouts = self.filtered(lambda p: p.expense_sheet_id and p.state == 'draft')
        if locked_payouts:
            # Store link values to restore
            links = {p.id: p.expense_sheet_id.id for p in locked_payouts}
            
            # Hide the links in the cache temporarily to avoid 'hr_expense' validation error
            for p in locked_payouts:
                p.env.cache.set(p, p._fields['expense_sheet_id'], False)
            
            try:
                # Force synchronization before posting while links are hidden
                for p in locked_payouts:
                    p._synchronize_to_moves({'amount', 'deduction_line_ids', 'amount_substract'})
                
                # Standard confirmation logic
                return super().action_post()
            finally:
                # Restore the links in the cache
                for p in locked_payouts:
                    if p.id in links:
                        p.env.cache.set(p, p._fields['expense_sheet_id'], self.env['hr.expense.sheet'].browse(links[p.id]))
        
        return super().action_post()

    def _synchronize_to_moves(self, changed_fields):
        # Force the refresh by ensuring 'amount' is in fields if deductions are involved
        if 'deduction_line_ids' in changed_fields or 'amount_substract' in changed_fields:
            if 'amount' not in changed_fields:
                changed_fields = set(changed_fields) | {'amount'}

        # Case for manual edits (write) when payment is draft
        draft_locked = self.filtered(lambda p: p.state == 'draft' and p.expense_sheet_id)
        if draft_locked:
            links = {p.id: p.expense_sheet_id.id for p in draft_locked}
            for p in draft_locked:
                p.env.cache.set(p, p._fields['expense_sheet_id'], False)
            try:
                return super()._synchronize_to_moves(changed_fields)
            finally:
                for p in draft_locked:
                    if p.id in links:
                        p.env.cache.set(p, p._fields['expense_sheet_id'], self.env['hr.expense.sheet'].browse(links[p.id]))
        
        return super()._synchronize_to_moves(changed_fields)

    def write(self, vals):
        if 'deduction_line_ids' in vals or 'amount_substract' in vals:
            # Force trigger sync
            res = super().write(vals)
            self._synchronize_to_moves({'amount', 'deduction_line_ids', 'amount_substract'})
            return res
        return super().write(vals)

    def action_cancel(self):
        res = super().action_cancel()
        for payment in self:
            if payment.expense_sheet_id:
                payment.expense_sheet_id.invalidate_recordset(['state'])
            if payment.realization_id and payment.realization_id.expense_sheet_id:
                payment.realization_id.expense_sheet_id.invalidate_recordset(['state'])
        return res

    def action_draft(self):
        res = super().action_draft()
        for payment in self:
            if payment.expense_sheet_id:
                payment.expense_sheet_id.invalidate_recordset(['state'])
            if payment.realization_id and payment.realization_id.expense_sheet_id:
                payment.realization_id.expense_sheet_id.invalidate_recordset(['state'])
        return res