{% extends "plants/base.html" %}
{% block title %}Identify plant — PlantDB{% endblock %}
{% block content %}

<div class="d-flex align-items-center gap-2 mb-3">
    <a href="{% url 'plant_list' %}" class="btn btn-sm btn-outline-secondary">←</a>
    <h5 class="mb-0">Identify plant</h5>
</div>

<p class="text-muted small mb-3">
    Add one or more photos, tag what each shows, then tap Identify.
</p>

{% if error %}
<div class="alert alert-warning py-2 small mb-3">{{ error }}</div>
{% endif %}

<form method="post" enctype="multipart/form-data" id="identify-form">
    {% csrf_token %}
    <input type="file" name="images" accept="image/jpeg,image/png" class="d-none" id="file-picker">

    <div id="photo-rows" class="mb-3"></div>

    <div id="add-btn-wrap" class="mb-3">
        <label class="btn btn-outline-secondary w-100 py-3" for="file-picker" id="add-photo-label">
            📷 Add photo <span id="photo-count" class="text-muted small"></span>
        </label>
    </div>

    <button type="submit" class="btn btn-success w-100" id="identify-btn" disabled>
        Identify →
    </button>
</form>

<div class="text-center mt-3">
    <a href="{% url 'plant_add' %}" class="text-muted small">Or enter name manually</a>
</div>

<div id="identify-spinner" style="display:none; position:fixed; top:0; left:0; width:100%; height:100%; background:rgba(255,255,255,.88); z-index:9999; align-items:center; justify-content:center; flex-direction:column; gap:12px;">
    <div class="spinner-border text-success" role="status"><span class="visually-hidden">Identifying…</span></div>
    <p class="text-muted small mb-0">Identifying plant…</p>
</div>

<script>
const ORGANS = [
    {val: 'flower', label: '🌸 flower'},
    {val: 'leaf',   label: '🍃 leaf'},
    {val: 'habit',  label: '🌿 habit'},
    {val: 'fruit',  label: '🍎 fruit'},
    {val: 'bark',   label: '🪵 bark'},
    {val: 'auto',   label: '✨ auto'},
];
const selected = [];  // {file, organ, objectUrl}
const picker = document.getElementById('file-picker');

picker.addEventListener('change', function () {
    if (!this.files[0] || selected.length >= 5) return;
    selected.push({file: this.files[0], organ: 'auto', objectUrl: URL.createObjectURL(this.files[0])});
    this.value = '';
    render();
});

function setOrgan(idx, organ) {
    selected[idx].organ = organ;
    render();
}

function removePhoto(idx) {
    URL.revokeObjectURL(selected[idx].objectUrl);
    selected.splice(idx, 1);
    render();
}

function render() {
    const rows = document.getElementById('photo-rows');
    rows.innerHTML = '';
    selected.forEach((item, i) => {
        const row = document.createElement('div');
        row.className = 'd-flex gap-2 align-items-start mb-3';
        row.innerHTML = `
            <div style="position:relative;flex-shrink:0;">
                <img src="${item.objectUrl}" style="width:72px;height:72px;object-fit:cover;border-radius:8px;" alt="">
                <button type="button" onclick="removePhoto(${i})"
                    style="position:absolute;top:2px;right:2px;background:rgba(0,0,0,.5);color:#fff;border:none;border-radius:50%;width:20px;height:20px;font-size:10px;cursor:pointer;padding:0;line-height:1;">✕</button>
            </div>
            <div style="flex:1;">
                <div class="text-muted small mb-1">What's shown?</div>
                <div class="d-flex flex-wrap gap-1">
                    ${ORGANS.map(o => `
                        <span onclick="setOrgan(${i}, '${o.val}')"
                              style="cursor:pointer; padding:2px 8px; border-radius:10px; font-size:11px; ${item.organ === o.val ? 'background:#52b788;color:#fff;' : 'background:#e9ecef;color:#6c757d;'}">
                            ${o.label}
                        </span>
                    `).join('')}
                </div>
                <input type="hidden" name="organs" value="${item.organ}" id="organ-${i}">
            </div>`;
        rows.appendChild(row);
    });

    document.querySelectorAll('input[name="organs"]').forEach((el, i) => {
        if (selected[i]) el.value = selected[i].organ;
    });

    document.getElementById('photo-count').textContent = selected.length ? `(${selected.length}/5)` : '';
    document.getElementById('add-btn-wrap').style.display = selected.length >= 5 ? 'none' : '';
    document.getElementById('identify-btn').disabled = selected.length === 0;
}

document.getElementById('identify-form').addEventListener('submit', function (e) {
    if (selected.length === 0) { e.preventDefault(); return; }
    const dt = new DataTransfer();
    selected.forEach(s => dt.items.add(s.file));
    picker.files = dt.files;
    document.getElementById('identify-spinner').style.display = 'flex';
});
</script>
{% endblock %}