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

_logger = logging.getLogger(__name__)

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

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

    def _get_hr_expense_base_class(self):
        """ Returns the hr_expense class in the MRO to jump over it. """
        mro = type(self).mro()
        # The module for Odoo's hr_expense override is usually 'odoo.addons.hr_expense'
        return next((c for c in mro if c.__module__.startswith('odoo.addons.hr_expense')), None)

    def action_post(self):
        """
        Confirmation bypass. Calls standard post with skip flag and FORCES a sync
        to ensure deductions are applied to the Journal Entry.
        """
        # 1. Force a synchronization of the moves right before posting.
        # We pass 'skip_expense_lock' to all layers (Move, Line) via context.
        self_bypass = self.with_context(skip_expense_lock=True)
        for payment in self_bypass:
            if payment.state == 'draft':
                payment._synchronize_to_moves({'amount', 'deduction_line_ids', 'amount_substract'})
        
        # 2. Standard confirmation logic with bypass flag for internal writes
        hr_expense_class = self._get_hr_expense_base_class()
        if hr_expense_class:
            return super(hr_expense_class, self.with_context(skip_expense_lock=True)).action_post()
        
        return super(AccountPayment, self.with_context(skip_expense_lock=True)).action_post()

    def _synchronize_to_moves(self, changed_fields):
        # 1. Standard synchronization first
        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'}

        # Triple Jumper: If we have the bypass flag, we jump over the hr_expense method.
        # This works in tandem with our Model-level jumpers in account_move and account_move_line.
        hr_expense_class = self._get_hr_expense_base_class()
        if self._context.get('skip_expense_lock') and hr_expense_class:
            super(hr_expense_class, self)._synchronize_to_moves(changed_fields)
        else:
            super()._synchronize_to_moves(changed_fields)

        # 2. Custom Deduction Synchronization
        # After base sync, we "fix" the lines if deductions are present
        for payment in self.with_context(skip_expense_lock=True, skip_account_move_synchronization=True):
            if payment.amount_substract and payment.amount_substract > 0 and payment.move_id:
                liquidity_lines, counterpart_lines, writeoff_lines = payment._seek_for_lines()
                
                # Adjust liquidity line to final_payment_amount
                for line in liquidity_lines:
                    final_amount = payment.final_payment_amount
                    line_vals = {
                        'amount_currency': -final_amount if payment.payment_type == 'outbound' else final_amount,
                        'debit': payment.currency_id._convert(final_amount, payment.company_id.currency_id, payment.company_id, payment.date) if payment.payment_type == 'inbound' else 0.0,
                        'credit': payment.currency_id._convert(final_amount, payment.company_id.currency_id, payment.company_id, payment.date) if payment.payment_type == 'outbound' else 0.0,
                    }
                    line.write(line_vals)

                # Deduction lines management
                existing_deduction_accounts = payment.deduction_line_ids.mapped('substract_account_id')
                other_lines = payment.move_id.line_ids - liquidity_lines - counterpart_lines - writeoff_lines
                to_delete = other_lines.filtered(lambda l: l.account_id.id in existing_deduction_accounts.ids)
                if to_delete:
                    to_delete.unlink()

                # Re-add deduction lines
                for deduction in payment.deduction_line_ids:
                    deduction_amount = deduction.amount_substract
                    deduction_balance = payment.currency_id._convert(
                        deduction_amount,
                        payment.company_id.currency_id,
                        payment.company_id,
                        payment.date,
                    )
                    
                    line_vals = {
                        'name': deduction.name or _('Payment Deduction: %s') % deduction.substract_account_id.name,
                        'move_id': payment.move_id.id,
                        'date_maturity': payment.date,
                        'amount_currency': -deduction_amount if payment.payment_type == 'outbound' else deduction_amount,
                        'currency_id': payment.currency_id.id,
                        'debit': deduction_balance if payment.payment_type == 'inbound' else 0.0,
                        'credit': deduction_balance if payment.payment_type == 'outbound' else 0.0,
                        'account_id': deduction.substract_account_id.id,
                    }
                    payment.env['account.move.line'].with_context(skip_expense_lock=True, check_move_validity=False).create(line_vals)
                
                # Force re-balance check
                payment.move_id._check_balanced()

    def _synchronize_from_moves(self, changed_fields):
        # 1. Standard sync with jumper support
        hr_expense_class = self._get_hr_expense_base_class()
        if self._context.get('skip_expense_lock') and hr_expense_class:
            super(hr_expense_class, self)._synchronize_from_moves(changed_fields)
        else:
            super()._synchronize_from_moves(changed_fields)

        # 2. Custom Deduction Restoration
        for payment in self.with_context(skip_expense_lock=True, skip_account_move_synchronization=True):
            if payment.amount_substract and payment.amount_substract > 0 and payment.move_id:
                liquidity_lines, counterpart_lines, writeoff_lines = payment._seek_for_lines()
                non_liquidity_lines = counterpart_lines + writeoff_lines
                
                # Gross amount is sum of counterparts that balance the liquidity
                if payment.payment_type == 'outbound':
                    gross_lines = non_liquidity_lines.filtered(lambda l: l.debit > 0)
                else:
                    gross_lines = non_liquidity_lines.filtered(lambda l: l.credit > 0)
                    
                if gross_lines:
                    correct_gross_amount = sum(abs(l.amount_currency) for l in gross_lines)
                    if abs(payment.amount - correct_gross_amount) > 0.001:
                        # Use SQL to avoid triggering more syncs, then invalidate cache
                        payment.env.cr.execute(
                            "UPDATE account_payment SET amount = %s WHERE id = %s",
                            (correct_gross_amount, payment.id)
                        )
                        payment.invalidate_recordset(['amount'])
                        payment._compute_final_payment_amount()

    def write(self, vals):
        # Propagate bypass flag during writes to avoid locked checks
        hr_expense_class = self._get_hr_expense_base_class()
        if hr_expense_class and self._context.get('skip_expense_lock'):
            return super(hr_expense_class, self).write(vals)

        if self.expense_sheet_id and self.state == 'draft':
            return super(AccountPayment, self.with_context(skip_expense_lock=True)).write(vals)
        return super().write(vals)

    def action_cancel(self):
        # Propagate bypass flag during cancel
        hr_expense_class = self._get_hr_expense_base_class()
        if hr_expense_class:
            res = super(hr_expense_class, self.with_context(skip_expense_lock=True)).action_cancel()
        else:
            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):
        # Propagate bypass flag during reset to draft
        hr_expense_class = self._get_hr_expense_base_class()
        if hr_expense_class:
            res = super(hr_expense_class, self.with_context(skip_expense_lock=True)).action_draft()
        else:
            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