# SPDX-License-Identifier: AGPL-3.0-or-later
"""Dailymotion (Videos)

"""

from typing import Set
from datetime import datetime, timedelta
from urllib.parse import urlencode
import time
import babel

from searx.exceptions import SearxEngineAPIException
from searx import network
from searx.utils import html_to_text
from searx.enginelib.traits import EngineTraits

# about
about = {
    "website": 'https://www.dailymotion.com',
    "wikidata_id": 'Q769222',
    "official_api_documentation": 'https://www.dailymotion.com/developer',
    "use_official_api": True,
    "require_api_key": False,
    "results": 'JSON',
}

# engine dependent config
categories = ['videos']
paging = True
number_of_results = 10

time_range_support = True
time_delta_dict = {
    "day": timedelta(days=1),
    "week": timedelta(days=7),
    "month": timedelta(days=31),
    "year": timedelta(days=365),
}

safesearch = True
safesearch_params = {2: '&is_created_for_kids=true', 1: '&is_created_for_kids=true', 0: ''}

# search-url
# - https://developers.dailymotion.com/tools/
# - https://www.dailymotion.com/doc/api/obj-video.html

result_fields = [
    'allow_embed',
    'description',
    'title',
    'created_time',
    'duration',
    'url',
    'thumbnail_360_url',
    'id',
]
search_url = (
    'https://api.dailymotion.com/videos?'
    'fields={fields}&password_protected={password_protected}&private={private}&sort={sort}&limit={limit}'
).format(
    fields=','.join(result_fields),
    password_protected='false',
    private='false',
    sort='relevance',
    limit=number_of_results,
)
iframe_src = "https://www.dailymotion.com/embed/video/{video_id}"

# The request query filters by 'languages' & 'country', therefore instead of
# fetching only languages we need to fetch locales.
supported_languages_url = 'https://api.dailymotion.com/locales'
supported_languages_iso639: Set[str] = set()


def init(_engine_settings):
    global supported_languages_iso639
    supported_languages_iso639 = set([language.split('_')[0] for language in supported_languages])


def request(query, params):

    if not query:
        return False

    language = params['language']
    if language == 'all':
        language = 'en-US'
    locale = babel.Locale.parse(language, sep='-')

    language_iso639 = locale.language
    if locale.language not in supported_languages_iso639:
        language_iso639 = 'en'

    query_args = {
        'search': query,
        'languages': language_iso639,
        'page': params['pageno'],
    }

    if locale.territory:
        localization = locale.language + '_' + locale.territory
        if localization in supported_languages:
            query_args['country'] = locale.territory

    time_delta = time_delta_dict.get(params["time_range"])
    if time_delta:
        created_after = datetime.now() - time_delta
        query_args['created_after'] = datetime.timestamp(created_after)

    query_str = urlencode(query_args)
    params['url'] = search_url + '&' + query_str + safesearch_params.get(params['safesearch'], '')
    params['raise_for_httperror'] = False

    return params


# get response from search-request
def response(resp):
    results = []

    search_res = resp.json()

    # check for an API error
    if 'error' in search_res:
        raise SearxEngineAPIException(search_res['error'].get('message'))

    network.raise_for_httperror(resp)

    # parse results
    for res in search_res.get('list', []):

        title = res['title']
        url = res['url']

        content = html_to_text(res['description'])
        if len(content) > 300:
            content = content[:300] + '...'

        publishedDate = datetime.fromtimestamp(res['created_time'], None)

        length = time.gmtime(res.get('duration'))
        if length.tm_hour:
            length = time.strftime("%H:%M:%S", length)
        else:
            length = time.strftime("%M:%S", length)

        thumbnail = res['thumbnail_360_url']
        thumbnail = thumbnail.replace("http://", "https://")

        item = {
            'template': 'videos.html',
            'url': url,
            'title': title,
            'content': content,
            'publishedDate': publishedDate,
            'length': length,
            'thumbnail': thumbnail,
        }

        # HINT: no mater what the value is, without API token videos can't shown
        # embedded
        if res['allow_embed']:
            item['iframe_src'] = iframe_src.format(video_id=res['id'])

        results.append(item)

    # return results
    return results


# get supported languages from their site
def _fetch_supported_languages(resp):
    response_json = resp.json()
    return [item['locale'] for item in response_json['list']]


def fetch_traits(engine_traits: EngineTraits):
    """Fetch regions from dailymotion.

    There are duplications in the locale codes returned from Dailymotion which
    can be ignored::

      en_EN --> en_GB, en_US
      ar_AA --> ar_EG, ar_AE, ar_SA

    """
    # pylint: disable=import-outside-toplevel

    engine_traits.data_type = 'supported_languages'  # deprecated

    from searx.locales import region_tag

    resp = network.get('https://api.dailymotion.com/locales')
    if not resp.ok:
        print("ERROR: response from peertube is not OK.")

    for item in resp.json()['list']:
        eng_tag = item['locale']
        if eng_tag in ('en_EN', 'ar_AA'):
            continue
        try:
            sxng_tag = region_tag(babel.Locale.parse(eng_tag))
        except babel.UnknownLocaleError:
            print("ERROR: item unknown --> %s" % item)
            continue

        conflict = engine_traits.regions.get(sxng_tag)
        if conflict:
            if conflict != eng_tag:
                print("CONFLICT: babel %s --> %s, %s" % (sxng_tag, conflict, eng_tag))
            continue
        engine_traits.regions[sxng_tag] = eng_tag