#!/usr/bin/env python3


from libervia.web.server.constants import Const as C
from libervia.backend.core.i18n import _, D_
from libervia.backend.core.log import getLogger
from libervia.backend.tools.common import data_format

log = getLogger(__name__)

name = "forum_view"
label = D_("View")
access = C.PAGES_ACCESS_PROFILE
template = "forum/view_messages.html"


def parse_url(self, request):
    self.get_path_args(request, ["service", "node", "item"], 3, service="jid")


def add_breadcrumb(self, request, breadcrumbs):
    return None


async def prepare_render(self, request):
    profile = self.get_profile(request) or C.SERVICE_PROFILE
    data = self.get_r_data(request)
    parent_service, parent_node, parent_item_id = (
        data["service"],
        data["node"],
        data["item"],
    )
    parent_item_data = data_format.deserialise(
        await self.host.bridge_call(
            "mb_get",
            parent_service.userhost(),
            parent_node,
            C.NO_LIMIT,
            [parent_item_id],
            data_format.serialise({}),
            profile,
        )
    )
    parent_item = parent_item_data["items"][0]
    try:
        service_s = parent_item["comments"][0]["service"]
        node = parent_item["comments"][0]["node"]
    except (KeyError, IndexError) as e:
        log.warning(f"No comment node found {e}:\n{parent_item=}")
        self.page_error(request, C.HTTP_SERVICE_UNAVAILABLE)
        return

    page_max = data.get("page_max", 20)
    extra = self.get_pubsub_extra(request, page_max=page_max)
    self.handle_search(request, extra)
    if not self.use_cache(request):
        extra[C.KEY_USE_CACHE] = False
    blog_data = data_format.deserialise(
        await self.host.bridge_call(
            "mb_get",
            service_s,
            node,
            C.NO_LIMIT,
            [],
            data_format.serialise(extra),
            profile,
        )
    )
    for parent_item in blog_data["items"]:
        try:
            comments_service = parent_item["comments"][0]["service"]
            comments_node = parent_item["comments"][0]["node"]
        except (KeyError, IndexError):
            log.warning(f"Can't get comments node for item: {parent_item}")
            continue
        else:
            parent_item["http_url"] = self.get_page_by_name("forum_view").get_url(
                comments_service, comments_node
            )
    self.set_pagination(request, blog_data)
    await self.fill_missing_identities(
        request, [i["author_jid"] for i in blog_data["items"]]
    )

    # We check if we are subscribed to the service.
    try:
        subscriptions = data_format.deserialise(
            await self.host.bridge_call(
                "ps_subscriptions_get",
                service_s,
                node,
                profile,
            )
        )
    except Exception as e:
        log.warning("Can't retrieve subscriptions, assuming that we are not subscribed.")
        subscribed = False
    else:
        subscribed = any(s.get("state") == "subscribed" for s in subscriptions)

    request.template_data.update(
        {
            "topic_title": parent_item["title"],
            "service": service_s,
            "node": node,
            "blog_items": blog_data,
            "subscribed": subscribed,
        }
    )
    self.expose_to_scripts(request, node=node, service=service_s, subscribed=subscribed)


async def on_data_post(self, request):
    profile = self.get_profile(request)
    if profile is None:
        self.page_error(request, C.HTTP_FORBIDDEN)
    type_ = self.get_posted_data(request, "type")
    if type_ == "comment":
        service, node, body = self.get_posted_data(request, ("service", "node", "body"))

        if not body:
            self.page_error(request, C.HTTP_BAD_REQUEST)
        mb_data = {"service": service, "node": node, "content_rich": body}
        try:
            await self.host.bridge_call(
                "mb_send", data_format.serialise(mb_data), profile
            )
        except Exception as e:
            if "forbidden" in str(e):
                self.page_error(request, 401)
            else:
                raise e
    else:
        log.warning(_("Unhandled data type: {}").format(type_))