# -*- coding: utf-8 -*-
from odoo import models, fields, api
from lxml import etree

class PurchaseOrder(models.Model):
    _inherit = 'purchase.order'

    hide_confirm_order_send_rfq = fields.Boolean(
        compute='_compute_hide_fields',
        store=False,
        help="Technical field computed from user settings to determine button visibility"
    )
    hide_purchase_prices = fields.Boolean(
        compute='_compute_hide_fields',
        store=False,
        help="Technical field computed from user settings to determine price visibility"
    )

    def _compute_hide_fields(self):
        # Retrieve the configuration settings dynamically from the current user
        current_user = self.env.user
        hide_buttons = current_user.hide_confirm_order_send_rfq
        hide_prices = current_user.hide_purchase_prices
        for order in self:
            order.hide_confirm_order_send_rfq = hide_buttons
            order.hide_purchase_prices = hide_prices

    @api.model
    def get_views(self, views, options=None):
        res = super().get_views(views, options)
        
        # Check current user configuration settings
        current_user = self.env.user
        hide_buttons = current_user.hide_confirm_order_send_rfq
        hide_prices = current_user.hide_purchase_prices
        
        if not (hide_buttons or hide_prices):
            return res
            
        for view_type, view_data in res.get('views', {}).items():
            arch_str = view_data.get('arch')
            if not arch_str:
                continue
                
            try:
                doc = etree.fromstring(arch_str.encode('utf-8'))
            except Exception:
                continue
                
            modified = False
            
            # 1. Dynamically hide Confirm Order and Send RFQ buttons
            if hide_buttons:
                for btn in doc.xpath("//button[@name='action_rfq_send' or @name='button_confirm']"):
                    btn.set('invisible', '1')
                    modified = True
                    
            # 2. Dynamically hide all price, subtotal, taxes, and total elements
            if hide_prices:
                price_fields = {
                    'price_unit', 'taxes_id', 'price_subtotal', 'price_total', 'price_tax',
                    'amount_untaxed', 'amount_tax', 'amount_total', 'amount_total_cc', 
                    'tax_totals', 'discount'
                }
                
                # Check all <field> tags
                for field in doc.xpath("//field"):
                    fname = field.get('name')
                    if fname in price_fields:
                        # Determine if this field is inside a list or tree view (columns)
                        is_column = False
                        p = field.getparent()
                        while p is not None:
                            if p.tag in ('tree', 'list'):
                                is_column = True
                                break
                            p = p.getparent()
                            
                        if is_column:
                            field.set('column_invisible', 'True')
                        else:
                            field.set('invisible', '1')
                        modified = True
                        
                # Hide any subtotal footer layouts
                for el in doc.xpath("//group[contains(@class, 'oe_subtotal_footer')] | //div[contains(@class, 'oe_subtotal_footer')]"):
                    el.set('invisible', '1')
                    modified = True
                    
            if modified:
                view_data['arch'] = etree.tostring(doc, encoding='utf-8').decode('utf-8')
                
        return res

class PurchaseOrderLine(models.Model):
    _inherit = 'purchase.order.line'

    @api.model
    def get_views(self, views, options=None):
        res = super().get_views(views, options)
        if not self.env.user.hide_purchase_prices:
            return res
            
        for view_type, view_data in res.get('views', {}).items():
            arch_str = view_data.get('arch')
            if not arch_str:
                continue
                
            try:
                doc = etree.fromstring(arch_str.encode('utf-8'))
            except Exception:
                continue
                
            modified = False
            price_fields = {
                'price_unit', 'price_unit_product_uom', 'price_subtotal', 
                'price_total', 'price_tax', 'discount', 'taxes_id'
            }
            
            for field in doc.xpath("//field"):
                if field.get('name') in price_fields:
                    is_column = False
                    p = field.getparent()
                    while p is not None:
                        if p.tag in ('tree', 'list'):
                            is_column = True
                            break
                        p = p.getparent()
                        
                    if is_column:
                        field.set('column_invisible', 'True')
                    else:
                        field.set('invisible', '1')
                    modified = True
                    
            if modified:
                view_data['arch'] = etree.tostring(doc, encoding='utf-8').decode('utf-8')
                
        return res