# coding: utf-8
from __future__ import unicode_literals

import itertools

from .common import InfoExtractor
from ..compat import (
    compat_parse_qs,
    compat_urllib_parse_urlparse,
)
from ..utils import (
    clean_html,
    float_or_none,
    int_or_none,
    try_get,
    urlencode_postdata,
)


class CiscoLiveBaseIE(InfoExtractor):
    # These appear to be constant across all Cisco Live presentations
    # and are not tied to any user session or event
    RAINFOCUS_API_URL = "https://events.rainfocus.com/api/%s"
    RAINFOCUS_API_PROFILE_ID = "Na3vqYdAlJFSxhYTYQGuMbpafMqftalz"
    RAINFOCUS_WIDGET_ID = "n6l4Lo05R8fiy3RpUBm447dZN8uNWoye"
    BRIGHTCOVE_URL_TEMPLATE = "http://players.brightcove.net/5647924234001/SyK2FdqjM_default/index.html?videoId=%s"

    HEADERS = {
        "Origin": "https://ciscolive.cisco.com",
        "rfApiProfileId": RAINFOCUS_API_PROFILE_ID,
        "rfWidgetId": RAINFOCUS_WIDGET_ID,
    }

    def _call_api(self, ep, rf_id, query, referrer, note=None):
        headers = self.HEADERS.copy()
        headers["Referer"] = referrer
        return self._download_json(
            self.RAINFOCUS_API_URL % ep,
            rf_id,
            note=note,
            data=urlencode_postdata(query),
            headers=headers,
        )

    def _parse_rf_item(self, rf_item):
        event_name = rf_item.get("eventName")
        title = rf_item["title"]
        description = clean_html(rf_item.get("abstract"))
        presenter_name = try_get(rf_item, lambda x: x["participants"][0]["fullName"])
        bc_id = rf_item["videos"][0]["url"]
        bc_url = self.BRIGHTCOVE_URL_TEMPLATE % bc_id
        duration = float_or_none(try_get(rf_item, lambda x: x["times"][0]["length"]))
        location = try_get(rf_item, lambda x: x["times"][0]["room"])

        if duration:
            duration = duration * 60

        return {
            "_type": "url_transparent",
            "url": bc_url,
            "ie_key": "BrightcoveNew",
            "title": title,
            "description": description,
            "duration": duration,
            "creator": presenter_name,
            "location": location,
            "series": event_name,
        }


class CiscoLiveSessionIE(CiscoLiveBaseIE):
    _VALID_URL = (
        r"https?://(?:www\.)?ciscolive(?:\.cisco)?\.com/[^#]*#/session/(?P<id>[^/?&]+)"
    )
    _TESTS = [
        {
            "url": "https://ciscolive.cisco.com/on-demand-library/?#/session/1423353499155001FoSs",
            "md5": "c98acf395ed9c9f766941c70f5352e22",
            "info_dict": {
                "id": "5803694304001",
                "ext": "mp4",
                "title": "13 Smart Automations to Monitor Your Cisco IOS Network",
                "description": "md5:ec4a436019e09a918dec17714803f7cc",
                "timestamp": 1530305395,
                "upload_date": "20180629",
                "uploader_id": "5647924234001",
                "location": "16B Mezz.",
            },
        },
        {
            "url": "https://www.ciscolive.com/global/on-demand-library.html?search.event=ciscoliveemea2019#/session/15361595531500013WOU",
            "only_matching": True,
        },
        {
            "url": "https://www.ciscolive.com/global/on-demand-library.html?#/session/1490051371645001kNaS",
            "only_matching": True,
        },
    ]

    def _real_extract(self, url):
        rf_id = self._match_id(url)
        rf_result = self._call_api("session", rf_id, {"id": rf_id}, url)
        return self._parse_rf_item(rf_result["items"][0])


class CiscoLiveSearchIE(CiscoLiveBaseIE):
    _VALID_URL = r"https?://(?:www\.)?ciscolive(?:\.cisco)?\.com/(?:global/)?on-demand-library(?:\.html|/)"
    _TESTS = [
        {
            "url": "https://ciscolive.cisco.com/on-demand-library/?search.event=ciscoliveus2018&search.technicallevel=scpsSkillLevel_aintroductory&search.focus=scpsSessionFocus_designAndDeployment#/",
            "info_dict": {
                "title": "Search query",
            },
            "playlist_count": 5,
        },
        {
            "url": "https://ciscolive.cisco.com/on-demand-library/?search.technology=scpsTechnology_applicationDevelopment&search.technology=scpsTechnology_ipv6&search.focus=scpsSessionFocus_troubleshootingTroubleshooting#/",
            "only_matching": True,
        },
        {
            "url": "https://www.ciscolive.com/global/on-demand-library.html?search.technicallevel=scpsSkillLevel_aintroductory&search.event=ciscoliveemea2019&search.technology=scpsTechnology_dataCenter&search.focus=scpsSessionFocus_bestPractices#/",
            "only_matching": True,
        },
    ]

    @classmethod
    def suitable(cls, url):
        return (
            False
            if CiscoLiveSessionIE.suitable(url)
            else super(CiscoLiveSearchIE, cls).suitable(url)
        )

    @staticmethod
    def _check_bc_id_exists(rf_item):
        return (
            int_or_none(try_get(rf_item, lambda x: x["videos"][0]["url"])) is not None
        )

    def _entries(self, query, url):
        query["size"] = 50
        query["from"] = 0
        for page_num in itertools.count(1):
            results = self._call_api(
                "search", None, query, url, "Downloading search JSON page %d" % page_num
            )
            sl = try_get(results, lambda x: x["sectionList"][0], dict)
            if sl:
                results = sl
            items = results.get("items")
            if not items or not isinstance(items, list):
                break
            for item in items:
                if not isinstance(item, dict):
                    continue
                if not self._check_bc_id_exists(item):
                    continue
                yield self._parse_rf_item(item)
            size = int_or_none(results.get("size"))
            if size is not None:
                query["size"] = size
            total = int_or_none(results.get("total"))
            if total is not None and query["from"] + query["size"] > total:
                break
            query["from"] += query["size"]

    def _real_extract(self, url):
        query = compat_parse_qs(compat_urllib_parse_urlparse(url).query)
        query["type"] = "session"
        return self.playlist_result(
            self._entries(query, url), playlist_title="Search query"
        )
