{% extends 'base.html' %}

{% block title %}Analysis — Brew Log{% endblock %}

{% block content %}
<div class="page__head">
    <div>
        <h1 class="page__title">Analysis</h1>
        <p class="page__sub">How consistently the brews ferment, and how long each one takes.</p>
    </div>
    <div class="btn-row">
        <a class="btn btn--ghost btn--sm" href="{{ url_for('analysis.history') }}">History</a>
        <a class="btn btn--ghost btn--sm" href="{{ url_for('analysis.active') }}">Active beers</a>
    </div>
</div>

{% if not rows %}
<div class="card">
    <div class="empty">
        <img class="empty__icon" src="{{ url_for('static', filename='img/logo.svg') }}" alt="" width="40" height="40">
        <p><strong>No finished brews to analyse yet.</strong></p>
        <p class="small">Once a run has a final reading it appears here.</p>
    </div>
</div>
{% else %}

<div class="grid grid--4 mb-lg">
    <div class="stat">
        <div class="stat__label">Average attenuation</div>
        <div class="stat__value">
            {% if stats.avg_attenuation is not none %}{{ stats.avg_attenuation }}%{% else %}—{% endif %}
        </div>
        <div class="stat__meta">of the original gravity fermented</div>
    </div>
    <div class="stat">
        <div class="stat__label">Spread</div>
        <div class="stat__value">
            {% if stats.consistency %}±{{ stats.consistency.stdev }}pp{% else %}—{% endif %}
        </div>
        <div class="stat__meta">
            {% if stats.consistency %}
                standard deviation of attenuation, lower is better
            {% else %}
                needs at least two brews
            {% endif %}
        </div>
    </div>
    <div class="stat">
        <div class="stat__label">Average brew time</div>
        <div class="stat__value">
            {% if stats.avg_days is not none %}{{ stats.avg_days }}d{% else %}—{% endif %}
        </div>
        <div class="stat__meta">first reading to final reading</div>
    </div>
    <div class="stat">
        <div class="stat__label">Time to 1.010</div>
        <div class="stat__value">
            {% if stats.avg_days_to_1010 is not none %}{{ stats.avg_days_to_1010 }}d{% else %}—{% endif %}
        </div>
        <div class="stat__meta">
            {% if stats.reached_1010 %}
                average of {{ stats.reached_1010 }} brew{{ '' if stats.reached_1010 == 1 else 's' }} that got there
            {% else %}
                no brew reached 1.010
            {% endif %}
        </div>
    </div>
</div>

<div class="grid grid--2 mb-lg">
    <section class="card">
        <div class="card__head">
            <h2 class="card__title">Attenuation by brew</h2>
            <span class="card__hint">How much of the original gravity was fermented away</span>
        </div>
        <div class="card__body">
            <canvas id="attenuation-chart" height="130"></canvas>
        </div>
    </section>

    <section class="card">
        <div class="card__head">
            <h2 class="card__title">Fermentation curves</h2>
            <span class="card__hint">Progress through fermentation, 0% to 100%</span>
        </div>
        <div class="card__body">
            <canvas id="curve-chart" height="130"></canvas>
        </div>
    </section>
</div>

<section class="card mb-lg">
    <div class="card__head">
        <h2 class="card__title">Every finished brew</h2>
        <span class="card__hint">{{ stats.count }} brews{% if stats.suspect_count %} ({{ stats.trusted_count }} counted){% endif %}</span>
    </div>
    <div class="card__body card__body--flush">
        <div class="table-wrap">
            <table class="data">
                <thead>
                    <tr>
                        <th>Run</th>
                        <th>Name</th>
                        <th class="num">OG</th>
                        <th class="num">FG</th>
                        <th class="num">ABV</th>
                        <th class="num">Attenuation</th>
                        <th class="num">Days</th>
                        <th class="num">To 1.010</th>
                        <th>Finished</th>
                    </tr>
                </thead>
                <tbody>
                {% for row in rows %}
                    <tr{% if row.suspect %} class="is-suspect"{% endif %}>
                        <td class="mono">{{ row.beer_run_id }}</td>
                        <td>{{ row.name }}{% if row.suspect %} <span class="chip chip--warn">not counted</span>{% endif %}</td>
                        <td class="num">
                            {% if row.og_points is not none %}
                                {{ '%.3f' % (row.og_points / 1000) }}
                            {% else %}—{% endif %}
                        </td>
                        <td class="num">
                            {% if row.fg_points is not none %}
                                {{ '%.3f' % (row.fg_points / 1000) }}
                            {% else %}—{% endif %}
                        </td>
                        <td class="num">
                            {% if row.abv is not none %}{{ '%.2f' % row.abv }}%{% else %}—{% endif %}
                        </td>
                        <td class="num">
                            {% if row.attenuation is not none %}
                                <strong>{{ row.attenuation }}%</strong>
                            {% else %}—{% endif %}
                        </td>
                        <td class="num">{{ row.days if row.days is not none else '—' }}</td>
                        <td class="num">{{ row.days_to_1010 if row.days_to_1010 is not none else '—' }}</td>
                        <td class="mono nowrap">{{ row.final_date or '—' }}</td>
                    </tr>
                {% endfor %}
                </tbody>
            </table>
        </div>
    </div>
</section>

{% if suspect %}
<section class="card mb-lg">
    <div class="card__head">
        <h2 class="card__title">Readings that need a second look</h2>
        <span class="card__hint">{{ suspect | length }} run{{ '' if suspect | length == 1 else 's' }} excluded from the averages</span>
    </div>
    <div class="card__body card__body--flush">
        <div class="table-wrap">
            <table class="data">
                <thead>
                    <tr>
                        <th>Run</th>
                        <th class="num">OG</th>
                        <th class="num">FG</th>
                        <th>Problem</th>
                    </tr>
                </thead>
                <tbody>
                {% for row in suspect %}
                    <tr>
                        <td class="mono">
                            <a href="{{ url_for('brews.run_detail', run_id=row.beer_run_id) }}">{{ row.beer_run_id }}</a>
                        </td>
                        <td class="num">{{ '%.3f' % (row.og_points / 1000) }}</td>
                        <td class="num"><span class="chip chip--warn">{{ '%.3f' % (row.fg_points / 1000) }}</span></td>
                        <td class="comment">{{ row.problem }}</td>
                    </tr>
                {% endfor %}
                </tbody>
            </table>
        </div>
    </div>
</section>
{% endif %}

{% if stats.consistency %}
<section class="card">
    <div class="card__head">
        <h2 class="card__title">What the numbers say</h2>
    </div>
    <div class="card__body">
        <p>
            Across {% if stats.suspect_count %}{{ stats.counted_attenuation }} of {{ stats.count }}{% else %}{{ stats.count }}{% endif %} finished brews the attenuation averages
            <strong>{{ stats.consistency.mean }}%</strong>, with a standard
            deviation of <strong>{{ stats.consistency.stdev }} percentage
            points</strong> and a total range of {{ stats.consistency.spread }}
            percentage points.
            {% if stats.consistency.stdev <= 3 %}
                That is a tight spread — the process is repeatable.
            {% elif stats.consistency.stdev <= 6 %}
                That is a moderate spread — some variation between batches.
            {% else %}
                That is a wide spread — something in the process is not
                consistent between batches.
            {% endif %}
        </p>
        {% if stats.fastest and stats.slowest and stats.fastest != stats.slowest %}
        <p>
            The quickest brew was <strong>{{ stats.fastest.name }}</strong> at
            {{ stats.fastest.days }} days; the longest was
            <strong>{{ stats.slowest.name }}</strong> at
            {{ stats.slowest.days }} days.
        </p>
        {% endif %}
        {% if stats.avg_days_to_1010 %}
        <p>
            On average a brew reaches gravity 1.010 after
            {{ stats.avg_days_to_1010 }} days — the number to plan around when
            deciding when to check on a fermenter.
        </p>
        {% endif %}
    </div>
</section>
{% endif %}

{% endif %}
{% endblock %}