from .. import controller
from odoo import http
from odoo.http import request


class Voucher(controller.Controller):
    prefix = '/api/v1/'

    @http.route(prefix + 'user/<user_id>/voucher', auth='public', methods=['GET', 'OPTIONS'])
    @controller.Controller.must_authorized(private=True, private_key='user_id')
    def get_vouchers(self, **kw):
        cart = request.env['website.user.cart']
        code = kw.get('code')
        user_id = kw.get('user_id')
        source = kw.get('source')
        visibility = ['public']

        parameter = []
        if code:
            visibility.append('private')
            parameter += [('code', '=', code)]
        user_pricelist = request.env.user_pricelist
        if user_pricelist:
            parameter += [('excl_pricelist_ids', 'not in', [user_pricelist.id])]

        parameter += [('visibility', 'in', visibility)]
        vouchers = request.env['voucher'].get_active_voucher(parameter)
        checkout = cart.get_user_checkout(user_id, source=source)
        products = checkout['products']

        order_line = []
        for product in products:
            order_line.append({
                'product_id': request.env['product.product'].browse(product['id']),
                'price': product['price']['price'],
                'discount': product['price']['discount_percentage'],
                'qty': product['quantity'],
                'subtotal': product['subtotal']
            })
        
        results = []
        for voucher in vouchers:
            if not voucher.can_used:
                continue
            
            voucher_info = voucher.apply(order_line)
            voucher_tnc = voucher.terms_conditions or voucher.generate_tnc()
            voucher_discount = voucher_info['discount']['all']

            valid_order = voucher_info['valid_order']

            can_apply = True if valid_order and voucher_discount > 0 else False

            voucher_res = voucher.format()
            voucher_res['can_apply'] = can_apply
            voucher_res['discount_voucher'] = voucher_discount
            voucher_res['terms_conditions'] = voucher_tnc
            results.append(voucher_res)
        
        sorted_results = sorted(results, key=lambda x: x['can_apply'], reverse=True)

        return self.response(sorted_results)