import ast

import werkzeug

from odoo.addons.http_routing.models.ir_http import slug, unslug
from odoo.http import Controller, request, route
from odoo.osv.expression import AND, OR


class ModelPageController(Controller):
    pager_step = 20

    @route([
        "/model/<string:page_name_slugified>",
        "/model/<string:page_name_slugified>/page/<int:page_number>",
        "/model/<string:page_name_slugified>/<string:record_slug>",
    ], website=True, auth="public")
    def generic_model(self, page_name_slugified=None, page_number=1, record_slug=None, **searches):
        if not page_name_slugified:
            raise werkzeug.exceptions.NotFound()

        website = request.website

        page_type = "listing"
        if record_slug is not None:
            page_type = "single"

        website_page_domain = AND([
            [("page_type", "=", page_type)],
            [("name_slugified", "=", page_name_slugified)],
            [("website_published", "=", True)],
            website.website_domain(),
        ])

        page = request.env["website.controller.page"].search(website_page_domain, limit=1)
        if not page:
            raise werkzeug.exceptions.NotFound()

        view = page.sudo().view_id
        if not view:
            raise werkzeug.exceptions.NotFound()

        target_model_name = page.sudo().model_id.model
        Model = request.env[target_model_name]
        if not Model.check_access_rights("read", raise_exception=False):
            raise werkzeug.exceptions.Forbidden()

        rec_domain = ast.literal_eval(page.record_domain or "[]")
        domains = [rec_domain]

        if record_slug:
            _, res_id = unslug(record_slug)
            record = Model.browse(res_id).filtered_domain(AND(domains))
            # We check for slug matching because we are not entirely sure
            # that we end up seeing record for the right model
            # i.e. in case of a redirect when a "single" page doesn't match the listing
            if not record.exists() or record_slug != slug(record):
                raise werkzeug.exceptions.NotFound()

            listing = request.env["website.controller.page"].search(AND([
                [("name_slugified", "=", page_name_slugified)],
                [("page_type", "=", "listing")],
                [("model", "=", target_model_name)],
                website.website_domain(),
            ]))

            render_context = {
                "main_object": page.sudo(), # The template reads some fields that are actually on view
                "record": record,
                "listing": {
                    'href': '.',
                    'name': listing.page_name
                } if listing else False
            }
            return request.render(view.key, render_context)

        layout_mode = request.session.get(f'website_{view.id}_layout_mode')
        if not layout_mode:
            # use the default layout set for this page
            layout_mode = page.default_layout

        searches.setdefault("search", "")
        searches.setdefault("order", "create_date desc")

        single_record_pages = request.env["website.controller.page"].search(AND([
            [("page_type", "=", "single")],
            [("model", "=", target_model_name)],
            website.website_domain(),
        ]))

        single_record_page = single_record_pages.filtered(lambda rec: rec.name_slugified == page_name_slugified)
        if single_record_page:
            single_record_page = single_record_page[0]
        else:
            single_record_page = single_record_pages[:1]

        def record_to_url(record):
            if not single_record_page:
                return None
            return "/model/%s/%s" % (single_record_page.name_slugified, slug(record))

        if searches["search"]:
            # _name_search doesn't take offset, we reimplement the logic that builds the name domain here
            search_fnames = set(Model._rec_names_search or ([Model._rec_name] if Model._rec_name else []))
            if "seo_name" in Model._fields:
                search_fnames.add("seo_name")
            if search_fnames:
                name_domain = OR([[(name_field, "ilike", searches["search"])] for name_field in search_fnames])
                domains.append(name_domain)

        search_count = Model.search_count(AND(domains))
        pager = website.pager(
            url=f"/model/{page.name_slugified}",
            url_args=searches,
            total=search_count,
            page=page_number,
            step=self.pager_step,
            scope=5,
        )

        records = Model.search(AND(domains), limit=self.pager_step, offset=self.pager_step * (page_number - 1), order=searches["order"])

        render_context = {
            "order_by": searches["order"],
            "search": searches["search"],
            "search_count": search_count,
            "pager": pager,
            "records": records,
            "record_to_url": record_to_url,
            "layout_mode": layout_mode,
            "view_id": view.id,
            "main_object": page.sudo(), # The template reads some fields that are actually on view
        }
        return request.render(view.key, render_context)