nav.html

{% comment %}
#### prev
* prev_part: {{prev_part.title}}
* prev_section: {{prev_section.title}}, part={{prev_section_part.title}}
* prev_topic: {{prev_topic.title}}, part={{prev_topic_part.title}}, section={{prev_topic_section.title}}

#### curr

* curr_part: {{curr_part.title}}
* curr_section: {{curr_section.title}}
* curr_topic: {{curr_topic.title}}

#### next

* next_part: {{next_part.title}}
* next_section: {{next_section.title}}, part={{next_section_part.title}}
* next_topic: {{next_topic.title}}, part={{next_topic_part.title}}, section={{next_topic_section.title}}
{% endcomment %}

{% if curr_quiz == nil and L3 != 'exercises' %}
    {% include topics.html %}
{% endif %}

{%- if next_quiz and next_quiz_topic and next_quiz_topic.url == curr_topic.url %}
%%practiceblock
## More practice

* [{{next_quiz.title}}](/{{curr_part.url}}/{{curr_section.url}}/{{curr_topic.url}}/{{next_quiz.url}})

%%/practiceblock
{%- endif %}
{%- if next_quiz and next_quiz_section and next_quiz_section.url == curr_section.url and curr_quiz_topic == nil %}
%%practiceblock
## More practice

* [{{next_quiz.title}}](/{{curr_part.url}}/{{curr_section.url}}/{{next_quiz.url}})

%%/practiceblock
{% endif %}

{%- if curr_topic and L3 != 'exercises' %}
    {%- if curr_topic.quizzes and curr_quiz == nil %}
%%practiceblock
## Practice

Complete the {% if curr_topic.quizzes.size != 1%}quizzes that cover{% else %}quiz that covers{% endif %} the contents of this topic.

        {%- for quiz in curr_topic.quizzes %}
* [{{quiz.title}}](/{{curr_part.url}}/{{curr_section.url}}/{{curr_topic.url}}/{{quiz.url}})
        {%- endfor %}
    {% endif %}
%%/practiceblock
{% else %}
    {% if curr_section.quizzes and curr_quiz == nil and L3 != 'exercises' %}
%%practiceblock
## Practice

Complete the {% if curr_section.quizzes.size != 1%}quizzes that cover{% else %}quiz that covers{% endif %} the contents of this topic.

        {%- for quiz in curr_section.quizzes %}
* [{{quiz.title}}](/{{curr_part.url}}/{{curr_section.url}}/{{quiz.url}})
        {% endfor %}
%%/practiceblock
    {% endif %}
{% endif %}


{% if curr_quiz == nil and curr_exercise == nil %}
{% if curr_section.exercises and curr_section.items.last.url != curr_topic.url and curr_topic == nil %}
%%exercisesblock
{% if curr_section.exercises.size != 1 %}
{% if L3 != 'exercises' %}
## Exercises
{% endif %}
This section contains {%if L3 != 'exercises' %}[{{curr_section.exercises.size}} exercises](/{{curr_part.url}}/{{curr_section.url}}/exercises){% else %}{{curr_section.exercises.size}} exercises{% endif %}. {% if L3 != 'exercises' %}Examine all the topics of this section before going to the coding practice.{% endif %}

{%- for exercise in curr_section.exercises %}
1. [{{exercise.title}}](/{{curr_part.url}}/{{curr_section.url}}/exercises/{{exercise.url}})
{%- endfor %}
{% else %}
{% if L3 != 'exercises' %}
## Exercise
{% endif %}
{% if L3 != 'exercises' %}This section contains an exercise, which you are supposed to do after studying all the topics of this section.{% else %}There is one exercise in this section. Here it is:{% endif %}

💪 [{{curr_section.exercises[0].title}}](/{{curr_part.url}}/{{curr_section.url}}/exercises/{{curr_section.exercises[0].url}})
{% endif %}
%%/exercisesblock
{% endif %}

{% if L3 == 'exercises' %}
## Refresh your knowledge

Refer to the contents of this section to find the answers if needed.

* [{{curr_section.title}}](/{{curr_part.url}}/{{curr_section.url}})
{%- if curr_section.items.size %}
{%- for topic in curr_section.items %}
    - [{{topic.title}}](/{{curr_part.url}}/{{curr_section.url}}/{{topic.url}})
{%- endfor %}

{% endif %}


{% endif %}
{% endif %}

{% if next_exercise %}
%%exercisesblock
## Next exercise

💪 [{{next_exercise.title}}](/{{curr_part.url}}/{{curr_section.url}}/exercises/{{next_exercise.url}})
%%/exercisesblock
{% endif %}

## Course navigation

←
{%- if prev_section == nil %}
[Start](/)
{%- endif %}
{%- if curr_topic %}
    {%- if prev_topic_section.url == curr_section.url %}
        [{{curr_section.title}}](/{{curr_part.url}}/{{curr_section.url}}) / [{{prev_topic.title}}](/{{curr_part.url}}/{{curr_section.url}}/{{prev_topic.url}})
    {%- else %}
        [{{curr_section.title}}](/{{curr_part.url}}/{{curr_section.url}})
    {%- endif %}
{%- else %}
    [{{prev_section.title}}](/{{prev_section_part.url}}/{{prev_section.url}})
    {%- if prev_section.items.size != nil %}
        / [{{prev_section.items.last.title}}](/{{prev_section_part.url}}/{{prev_section.url}}/{{prev_section.items.last.url}})
    {%- endif %}
{%- endif %}
  |  
{%- if L3 == 'exercises' %}
    [{{next_section.title}}](/{%- if next_part == nil %}{{curr_part.url}}{%- else %}{{next_part.url}}{%- endif %}/{{next_section.url}})
{%- elsif curr_section.exercises and curr_section.items.last.url == curr_topic.url %}
    {%-if curr_section.exercises.size != 1 %}
        💪 [Exercises: {{curr_section.title}}](/{{curr_part.url}}/{{curr_section.url}}/exercises)
    {%- else %}
        💪 [Exercise: {{curr_section.exercises[0].title}}](/{{curr_part.url}}/{{curr_section.url}}/exercises/{{curr_section.exercises[0].url}})
    {%- endif %}
{%- else %}
{%- if curr_topic %}
    {%- if next_topic_section.url == curr_section.url %}
        [{{curr_section.title}}](/{{curr_part.url}}/{{curr_section.url}}) / [{{next_topic.title}}](/{{curr_part.url}}/{{curr_section.url}}/{{next_topic.url}})
    {%- else %}
        [{{next_section.title}}](/{{next_section_part.url}}/{{next_section.url}})
    {%- endif %}
{%- else %}
    {%- if curr_section.items.size != nil %}
        [{{curr_section.items[0].title}}](/{{curr_part.url}}/{{curr_section.url}}/{{curr_section.items[0].url}})
    {%- else %}
        [{{next_section.title}}](/{{next_section_part.url}}/{{next_section.url}})
    {%- endif %}
{%- endif %}
{%- endif %}
→

{% if curr_section.exercises and curr_section.items.last.url != curr_topic.url and curr_topic != nil %}
{%if curr_section.exercises.size != 1 %}
<br />
💪 Or jump directly [to the exercises to this section](/{{curr_part.url}}/{{curr_section.url}}/exercises).
{% else %}
<br />
💪 Or jump directly [to the exercise to this section](/{{curr_part.url}}/{{curr_section.url}}/exercises/{{curr_section.exercises[0].url}}).
{% endif %}
{% endif %}

{% if curr_exercise %}
<!-- <style>
    body {
        background-color: #f6fdff;
    }
</style> -->
{% endif %}