{% macro text_runs(runs) %}
    {%- if runs[0] is mapping -%}
        {%- for text_run in runs -%}
            {%- if text_run.get("bold", false) -%}
                <b>{{ text_run["text"] }}</b>
            {%- elif text_run.get('italics', false) -%}
                <i>{{ text_run["text"] }}</i>
            {%- else -%}
                {{ text_run["text"] }}
            {%- endif -%}
        {%- endfor -%}
    {%- elif runs -%}
        {{ runs }}
    {%- endif -%}
{% endmacro %}

{% macro item(info, description=false, horizontal=true, include_author=true, include_badges=true, lazy_load=false) %}
    <article class="item-box">
        {% if info['error'] %}
            {{ info['error'] }}
        {% else %}
            <div class="item-video {{ info['type'] + '-item' }}">
                <a class="thumbnail-box" href="{{ info['url'] or '#' }}" title="{{ info['title'] }}">
                    <div class="thumbnail {% if info['type'] == 'channel' %} channel {% endif %}">
                        {% if lazy_load %}
                            <img class="thumbnail-img lazy" alt="&#x20;" data-src="{{ info['thumbnail'] }}" onerror="thumbnail_fallback(this)">
                        {% elif info['type'] == 'channel' %}
                            <img class="thumbnail-img channel" alt="&#x20;" src="{{ info['thumbnail'] }}" onerror="thumbnail_fallback(this)">
                        {% else %}
                            <img class="thumbnail-img" alt="&#x20;" src="{{ info['thumbnail'] }}" onerror="thumbnail_fallback(this)">
                        {% endif %}

                        {% if info['type'] != 'channel' %}
                            <p class="length">{{ (info['video_count']|commatize + ' videos') if info['type'] == 'playlist' else info['duration'] }}</p>
                        {% endif %}
                    </div>
                </a>
                <h4 class="title"><a href="{{ info['url'] or '#' }}" title="{{ info['title'] }}">{{ info['title'] }}</a></h4>

                {% if include_author %}
                    {% set author_description = info['author'] %}
                    {% set AUTHOR_DESC_LENGTH = 35 %}
                    {% if author_description != None %}
                        {% if author_description|length >= AUTHOR_DESC_LENGTH %}
                            {% set author_description = author_description[:AUTHOR_DESC_LENGTH].split(' ')[:-1]|join(' ') %}
                            {% if not author_description[-1] in ['.', '?', ':', '!'] %}
                                {% set author_more = author_description + '…' %}
                                {% set author_description = author_more|replace('"','') %}
                            {% endif %}
                        {% endif %}
                    {% endif %}
                    {% if info.get('author_url') %}
                        <address title="{{ info['author'] }}"><b><a href="{{ info['author_url'] }}">{{ author_description }}</a></b></address>
                    {% else %}
                        <address title="{{ info['author'] }}"><b>{{ author_description }}</b></address>
                    {% endif %}
                {% endif %}

                <div class="stats {{'horizontal-stats' if horizontal else 'vertical-stats'}}">
                    {% if info['type'] == 'channel' %}
                        {% if info.get('approx_subscriber_count') %}
                            <div>{{ info['approx_subscriber_count'] }} subscribers</div>
                        {% endif %}
                        <div>{{ info['video_count']|commatize }} videos</div>
                    {% else %}
                        {% if info.get('time_published') %}
                            <span>{{ info['time_published'] }}</span>
                        {% endif %}
                        {% if info.get('approx_view_count') %}
                            <div class="views">{{ info['approx_view_count'] }} views</div>
                        {% endif %}
                    {% endif %}
                </div>
            </div>
            {% if info['type'] == 'video' %}
                <input class="item-checkbox" type="checkbox" name="video_info_list" value="{{ info['video_info'] }}" form="playlist-edit">
            {% endif %}
        {% endif %}
    </article>
{% endmacro %}

{% macro page_buttons(estimated_pages, url, parameters_dictionary, include_ends=false) %}
    {% set current_page = parameters_dictionary.get('page', 1)|int %}
    {% set parameters_dictionary = parameters_dictionary.to_dict() %}
    {% if current_page is le(5) %}
        {% set page_start = 1 %}
        {% set page_end = [9, estimated_pages]|min %}
    {% else %}
        {% set page_start = current_page - 4 %}
        {% set page_end = [current_page + 4, estimated_pages]|min %}
    {% endif %}

    {% if include_ends and page_start is gt(1) %}
        {% set _ = parameters_dictionary.__setitem__('page', 1) %}
        <a class="page-link first-page-button" href="{{ url + '?' + parameters_dictionary|urlencode }}">{{ 1 }}</a>
    {% endif %}

    {% for page in range(page_start, page_end+1) %}
        {% if page == current_page %}
            <a class="page-link is-current">{{ page }}</a>
        {% else %}
            {# https://stackoverflow.com/questions/36886650/how-to-add-a-new-entry-into-a-dictionary-object-while-using-jinja2 #}
            {% set _ = parameters_dictionary.__setitem__('page', page) %}
            <a class="page-link" href="{{ url + '?' + parameters_dictionary|urlencode }}">{{ page }}</a>
        {% endif %}
    {% endfor %}

    {% if include_ends and page_end is lt(estimated_pages) %}
        {% set _ = parameters_dictionary.__setitem__('page', estimated_pages) %}
        <a class="page-link last-page-button" href="{{ url + '?' + parameters_dictionary|urlencode }}">{{ estimated_pages }}</a>
    {% endif %}

{% endmacro %}

{% macro next_previous_buttons(is_last_page, url, parameters_dictionary) %}
    {% set current_page = parameters_dictionary.get('page', 1)|int %}
    {% set parameters_dictionary = parameters_dictionary.to_dict() %}

    {% if current_page != 1 %}
        {% set _ = parameters_dictionary.__setitem__('page', current_page - 1) %}
        <a class="page-link previous-page" href="{{ url + '?' + parameters_dictionary|urlencode }}">Previous page</a>
    {% endif %}

    {% if not is_last_page %}
        {% set _ = parameters_dictionary.__setitem__('page', current_page + 1) %}
        <a class="page-link next-page" href="{{ url + '?' + parameters_dictionary|urlencode }}">Next page</a>
    {% endif %}
{% endmacro %}

{% macro next_previous_ctoken_buttons(prev_ctoken, next_ctoken, url, parameters_dictionary) %}
    {% set parameters_dictionary = parameters_dictionary.to_dict() %}

    {% if prev_ctoken %}
        {% set _ = parameters_dictionary.__setitem__('ctoken', prev_ctoken) %}
        <a class="page-link previous-page" href="{{ url + '?' + parameters_dictionary|urlencode }}">Previous page</a>
    {% endif %}

    {% if next_ctoken %}
        {% set _ = parameters_dictionary.__setitem__('ctoken', next_ctoken) %}
        <a class="page-link next-page" href="{{ url + '?' + parameters_dictionary|urlencode }}">Next page</a>
    {% endif %}
{% endmacro %}
