{% extends 'base.html' %}
{% load static %}

{% block title %}Zahlungs-Pipeline – Stiftungsverwaltung{% endblock %}

{% block content %}
<div class="row">
    <div class="col-12">
        <!-- Header -->
        <div class="d-flex justify-content-between align-items-center mb-4">
            <h1 class="h3">
                <i class="fas fa-tasks text-primary me-2"></i>
                Zahlungs-Pipeline
            </h1>
            <div class="d-flex gap-2">
                <a href="{% url 'stiftung:sepa_xml_export' %}" class="btn btn-outline-success">
                    <i class="fas fa-file-code me-2"></i>SEPA XML exportieren
                </a>
                <a href="{% url 'stiftung:unterstuetzung_create' %}" class="btn btn-primary">
                    <i class="fas fa-plus me-2"></i>Neue Zahlung
                </a>
            </div>
        </div>

        <!-- Filter Bar -->
        <div class="card shadow mb-4">
            <div class="card-body py-2">
                <form method="get" class="d-flex gap-3 flex-wrap align-items-center">
                    <div class="d-flex align-items-center gap-2">
                        <label class="text-muted small fw-bold mb-0">Destinatär:</label>
                        <select name="destinataer" class="form-select form-select-sm" style="width:200px" onchange="this.form.submit()">
                            <option value="">Alle</option>
                            {% for d in destinataere %}
                            <option value="{{ d.pk }}" {% if d.pk|stringformat:'s' == destinataer_filter %}selected{% endif %}>{{ d.get_full_name }}</option>
                            {% endfor %}
                        </select>
                    </div>
                    <div class="d-flex align-items-center gap-2">
                        <label class="text-muted small fw-bold mb-0">Konto:</label>
                        <select name="konto" class="form-select form-select-sm" style="width:180px" onchange="this.form.submit()">
                            <option value="">Alle</option>
                            {% for k in konten %}
                            <option value="{{ k.pk }}" {% if k.pk|stringformat:'s' == konto_filter %}selected{% endif %}>{{ k.kontoname }}</option>
                            {% endfor %}
                        </select>
                    </div>
                    {% if destinataer_filter or konto_filter %}
                    <a href="{% url 'stiftung:zahlungs_pipeline' %}" class="btn btn-sm btn-outline-secondary">
                        <i class="fas fa-times"></i> Filter zurücksetzen
                    </a>
                    {% endif %}
                </form>
            </div>
        </div>

        <!-- 4-Augen Hinweis -->
        <div class="alert alert-warning py-2 mb-4 small">
            <i class="fas fa-shield-alt me-2"></i>
            <strong>Vier-Augen-Prinzip:</strong>
            Zahlungen können nur von einem <em>anderen</em> Nutzer als dem Ersteller freigegeben werden.
            SEPA-Export ist nur für Zahlungen im Status „Freigegeben" verfügbar.
        </div>

        <!-- Pipeline Kanban -->
        <div class="row g-3">
            {% for stage in pipeline_stages %}
            <div class="col-xl col-lg-4 col-md-6">
                <div class="card shadow h-100">
                    <div class="card-header bg-{{ stage.farbe }} {% if stage.farbe == 'secondary' or stage.farbe == 'dark' %}text-white{% elif stage.farbe == 'warning' %}text-dark{% else %}text-white{% endif %} py-2">
                        <div class="d-flex justify-content-between align-items-center">
                            <span class="fw-semibold small">
                                <i class="fas {{ stage.icon }} me-1"></i>{{ stage.label }}
                            </span>
                            <span class="badge bg-white text-dark">{{ stage.zahlungen|length }}</span>
                        </div>
                        {% if stage.gesamt > 0 %}
                        <div class="small opacity-75 mt-1">€{{ stage.gesamt|floatformat:2 }}</div>
                        {% endif %}
                    </div>
                    <div class="card-body p-2" style="max-height: 600px; overflow-y: auto;">
                        {% if stage.zahlungen %}
                        {% for z in stage.zahlungen %}
                        <div class="card mb-2 border shadow-sm" style="font-size:0.8rem;">
                            <div class="card-body py-2 px-2">
                                <div class="d-flex justify-content-between align-items-start">
                                    <div class="fw-semibold">
                                        <a href="{% url 'stiftung:destinataer_detail' pk=z.destinataer.pk %}" class="text-decoration-none text-dark">
                                            {{ z.destinataer.get_full_name }}
                                        </a>
                                    </div>
                                    <span class="badge bg-{{ stage.farbe }} {% if stage.farbe == 'warning' %}text-dark{% else %}text-white{% endif %}">
                                        €{{ z.betrag|floatformat:2 }}
                                    </span>
                                </div>
                                <div class="text-muted mt-1">
                                    Fällig: {{ z.faellig_am|date:"d.m.Y" }}
                                    {% if z.is_overdue %}
                                        <span class="badge bg-danger ms-1">überfällig</span>
                                    {% endif %}
                                </div>
                                {% if z.beschreibung %}
                                <div class="text-muted small mt-1">{{ z.beschreibung }}</div>
                                {% endif %}
                                {% if z.freigegeben_von %}
                                <div class="small text-success mt-1">
                                    <i class="fas fa-shield-alt"></i>
                                    {{ z.freigegeben_von.get_full_name|default:z.freigegeben_von.username }}
                                    ({{ z.freigegeben_am|date:"d.m.Y" }})
                                </div>
                                {% endif %}
                                <!-- Actions -->
                                <div class="mt-2 d-flex gap-1 flex-wrap">
                                    {% if stage.key == 'offen' %}
                                    <form method="post" action="{% url 'stiftung:unterstuetzung_nachweis_eingereicht' pk=z.pk %}">
                                        {% csrf_token %}
                                        <input type="hidden" name="next" value="{% url 'stiftung:zahlungs_pipeline' %}">
                                        <button type="submit" class="btn btn-xs btn-outline-info" style="font-size:0.7rem;padding:2px 6px;" title="Nachweis eingereicht">
                                            <i class="fas fa-file-alt"></i>
                                        </button>
                                    </form>
                                    {% elif stage.key == 'nachweis_eingereicht' %}
                                    <form method="post" action="{% url 'stiftung:unterstuetzung_freigeben' pk=z.pk %}">
                                        {% csrf_token %}
                                        <input type="hidden" name="next" value="{% url 'stiftung:zahlungs_pipeline' %}">
                                        <button type="submit" class="btn btn-xs btn-outline-warning" style="font-size:0.7rem;padding:2px 6px;" title="4-Augen-Freigabe">
                                            <i class="fas fa-shield-alt"></i>
                                        </button>
                                    </form>
                                    {% elif stage.key == 'freigegeben' %}
                                    <a href="{% url 'stiftung:unterstuetzung_mark_paid' pk=z.pk %}" class="btn btn-xs btn-outline-success" style="font-size:0.7rem;padding:2px 6px;" title="Als überwiesen markieren">
                                        <i class="fas fa-university"></i>
                                    </a>
                                    {% elif stage.key == 'ueberwiesen' %}
                                    <form method="post" action="{% url 'stiftung:unterstuetzung_abschliessen' pk=z.pk %}">
                                        {% csrf_token %}
                                        <input type="hidden" name="next" value="{% url 'stiftung:zahlungs_pipeline' %}">
                                        <button type="submit" class="btn btn-xs btn-outline-dark" style="font-size:0.7rem;padding:2px 6px;" title="Abschließen">
                                            <i class="fas fa-check-double"></i>
                                        </button>
                                    </form>
                                    {% endif %}
                                    <a href="{% url 'stiftung:unterstuetzung_detail' pk=z.pk %}" class="btn btn-xs btn-outline-secondary" style="font-size:0.7rem;padding:2px 6px;" title="Details">
                                        <i class="fas fa-eye"></i>
                                    </a>
                                </div>
                            </div>
                        </div>
                        {% endfor %}
                        {% else %}
                        <div class="text-muted text-center small py-4">
                            <i class="fas fa-inbox fa-2x mb-2 d-block opacity-25"></i>
                            Keine Zahlungen
                        </div>
                        {% endif %}
                    </div>
                </div>
            </div>
            {% endfor %}
        </div>
    </div>
</div>
{% endblock %}