# -*- coding: utf-8 -*-
import json
from xml.sax.saxutils import escape
from odoo import http
from odoo.http import request, Response

class MetaCatalogFeedController(http.Controller):

    @http.route('/social/meta/catalog_feed.xml', type='http', auth='public', methods=['GET'], csrf=False)
    def catalog_feed_xml(self, **kwargs):
        """
        Generates standard Meta Commerce / Google Merchant RSS 2.0 product feed XML.
        Meta Commerce Manager can be scheduled to fetch this URL hourly or daily.
        """
        company = request.env.company
        base_url = request.env['ir.config_parameter'].sudo().get_param('web.base.url', '').rstrip('/')

        products = request.env['product.product'].sudo().search([
            ('is_published', '=', True),
            ('sale_ok', '=', True),
            ('company_id', 'in', (False, company.id))
        ])

        xml_lines = [
            '<?xml version="1.0" encoding="UTF-8"?>',
            '<rss version="2.0" xmlns:g="http://base.google.com/ns/1.0">',
            '<channel>',
            f'<title>{escape(company.name)} Meta Commerce Catalog</title>',
            f'<link>{escape(base_url)}</link>',
            f'<description>Product feed for Meta Commerce and Instagram Shopping</description>',
        ]

        currency = company.currency_id.name or 'USD'

        for product in products:
            tmpl = product.product_tmpl_id
            retailer_id = product.default_code or f"odoo_prod_{product.id}"
            title = product.display_name or tmpl.name
            description = tmpl.description_sale or tmpl.description or title
            product_url = f"{base_url}{product.website_url}" if hasattr(product, 'website_url') and product.website_url else f"{base_url}/shop"
            image_url = f"{base_url}/web/image/product.product/{product.id}/image_1920"

            # Availability
            if tmpl.detailed_type in ('consu', 'service'):
                avail = 'in stock'
            elif hasattr(product, 'qty_available') and product.qty_available <= 0:
                avail = 'out of stock'
            else:
                avail = 'in stock'

            price_str = f"{product.lst_price:.2f} {currency}"
            item_group_id = f"odoo_tmpl_{tmpl.id}"
            brand = tmpl.company_id.name or company.name

            xml_lines.append('<item>')
            xml_lines.append(f'<g:id>{escape(str(retailer_id))}</g:id>')
            xml_lines.append(f'<g:title>{escape(str(title))}</g:title>')
            xml_lines.append(f'<g:description>{escape(str(description[:4900]))}</g:description>')
            xml_lines.append(f'<g:link>{escape(product_url)}</g:link>')
            xml_lines.append(f'<g:image_link>{escape(image_url)}</g:image_link>')
            xml_lines.append(f'<g:brand>{escape(str(brand))}</g:brand>')
            xml_lines.append(f'<g:condition>new</g:condition>')
            xml_lines.append(f'<g:availability>{avail}</g:availability>')
            xml_lines.append(f'<g:price>{price_str}</g:price>')
            xml_lines.append(f'<g:item_group_id>{escape(item_group_id)}</g:item_group_id>')
            xml_lines.append('</item>')

        xml_lines.append('</channel>')
        xml_lines.append('</rss>')

        feed_xml = "\n".join(xml_lines)
        return request.make_response(feed_xml, [
            ('Content-Type', 'application/xml; charset=utf-8'),
            ('Cache-Control', 'public, max-age=900')
        ])

    @http.route('/social/meta/catalog_feed.json', type='http', auth='public', methods=['GET'], csrf=False)
    def catalog_feed_json(self, **kwargs):
        """JSON catalog feed endpoint."""
        company = request.env.company
        base_url = request.env['ir.config_parameter'].sudo().get_param('web.base.url', '').rstrip('/')

        products = request.env['product.product'].sudo().search([
            ('is_published', '=', True),
            ('sale_ok', '=', True),
            ('company_id', 'in', (False, company.id))
        ])

        items = []
        meta_api = request.env['social.meta.catalog'].sudo()
        for product in products:
            try:
                payload = meta_api.build_item_payload(product, method='UPDATE')
                items.append(payload.get('data'))
            except Exception:
                continue

        return request.make_response(
            json.dumps({'catalog': items, 'total_items': len(items)}, indent=2),
            [('Content-Type', 'application/json; charset=utf-8')]
        )