"""
PDF Templates - Inline HTML-Templates und CSS fuer PDF-Generierung.

Fallback-Templates die verwendet werden wenn keine externen HTML-Dateien
im templates/pdf/ Verzeichnis vorhanden sind.
"""


def get_base_css() -> str:
    """Basis-CSS fuer alle PDFs (A4, Typografie, Komponenten-Styles)."""
    return """
    @page {
        size: A4;
        margin: 2cm 2.5cm;
        @top-right {
            content: counter(page) " / " counter(pages);
            font-size: 9pt;
            color: #666;
        }
    }

    body {
        font-family: 'DejaVu Sans', 'Liberation Sans', Arial, sans-serif;
        font-size: 11pt;
        line-height: 1.5;
        color: #333;
    }

    h1, h2, h3 {
        font-weight: bold;
        margin-top: 1em;
        margin-bottom: 0.5em;
    }

    h1 { font-size: 16pt; }
    h2 { font-size: 14pt; }
    h3 { font-size: 12pt; }

    .header {
        border-bottom: 2px solid #2c3e50;
        padding-bottom: 15px;
        margin-bottom: 20px;
    }

    .school-name {
        font-size: 18pt;
        font-weight: bold;
        color: #2c3e50;
    }

    .school-info {
        font-size: 9pt;
        color: #666;
    }

    .letter-date {
        text-align: right;
        margin-bottom: 20px;
    }

    .recipient {
        margin-bottom: 30px;
    }

    .subject {
        font-weight: bold;
        margin-bottom: 20px;
    }

    .content {
        text-align: justify;
        margin-bottom: 30px;
    }

    .signature {
        margin-top: 40px;
    }

    .legal-references {
        font-size: 9pt;
        color: #666;
        border-top: 1px solid #ddd;
        margin-top: 30px;
        padding-top: 10px;
    }

    .gfk-badge {
        display: inline-block;
        background: #e8f5e9;
        color: #27ae60;
        font-size: 8pt;
        padding: 2px 8px;
        border-radius: 10px;
        margin-right: 5px;
    }

    /* Zeugnis-Styles */
    .certificate-header {
        text-align: center;
        margin-bottom: 30px;
    }

    .certificate-title {
        font-size: 20pt;
        font-weight: bold;
        margin-bottom: 10px;
    }

    .student-info {
        margin-bottom: 20px;
        padding: 15px;
        background: #f9f9f9;
        border-radius: 5px;
    }

    .grades-table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 20px;
    }

    .grades-table th,
    .grades-table td {
        border: 1px solid #ddd;
        padding: 8px 12px;
        text-align: left;
    }

    .grades-table th {
        background: #2c3e50;
        color: white;
    }

    .grades-table tr:nth-child(even) {
        background: #f9f9f9;
    }

    .grade-cell {
        text-align: center;
        font-weight: bold;
        font-size: 12pt;
    }

    .attendance-box {
        background: #fff3cd;
        padding: 15px;
        border-radius: 5px;
        margin-bottom: 20px;
    }

    .signatures-row {
        display: flex;
        justify-content: space-between;
        margin-top: 50px;
    }

    .signature-block {
        text-align: center;
        width: 40%;
    }

    .signature-line {
        border-top: 1px solid #333;
        margin-top: 40px;
        padding-top: 5px;
    }

    /* Korrektur-Styles */
    .exam-header {
        background: #2c3e50;
        color: white;
        padding: 15px;
        margin-bottom: 20px;
    }

    .result-box {
        background: #e8f5e9;
        padding: 20px;
        text-align: center;
        margin-bottom: 20px;
        border-radius: 5px;
    }

    .result-grade {
        font-size: 36pt;
        font-weight: bold;
    }

    .result-points {
        font-size: 14pt;
        color: #666;
    }

    .corrections-list {
        margin-bottom: 20px;
    }

    .correction-item {
        border: 1px solid #ddd;
        padding: 15px;
        margin-bottom: 10px;
        border-radius: 5px;
    }

    .correction-question {
        font-weight: bold;
        margin-bottom: 5px;
    }

    .correction-feedback {
        background: #fff8e1;
        padding: 10px;
        margin-top: 10px;
        border-left: 3px solid #ffc107;
        font-size: 10pt;
    }

    .stats-table {
        width: 100%;
        margin-top: 20px;
    }

    .stats-table td {
        padding: 5px 10px;
    }
    """


def get_letter_template_html() -> str:
    """Inline HTML-Template fuer Elternbriefe."""
    return """
<!DOCTYPE html>
<html lang="de">
<head>
    <meta charset="UTF-8">
    <title>{{ data.subject }}</title>
</head>
<body>
    <div class="header">
        {% if data.school_info %}
        <div class="school-name">{{ data.school_info.name }}</div>
        <div class="school-info">
            {{ data.school_info.address }}<br>
            Tel: {{ data.school_info.phone }} | E-Mail: {{ data.school_info.email }}
            {% if data.school_info.website %} | {{ data.school_info.website }}{% endif %}
        </div>
        {% else %}
        <div class="school-name">Schule</div>
        {% endif %}
    </div>

    <div class="letter-date">
        {{ data.date }}
    </div>

    <div class="recipient">
        {{ data.recipient_name }}<br>
        {{ data.recipient_address | replace('\\n', '<br>') | safe }}
    </div>

    <div class="subject">
        Betreff: {{ data.subject }}
    </div>

    <div class="meta-info" style="font-size: 10pt; color: #666; margin-bottom: 20px;">
        Schüler/in: {{ data.student_name }} | Klasse: {{ data.student_class }}
    </div>

    <div class="content">
        {{ data.content | replace('\\n', '<br>') | safe }}
    </div>

    {% if data.gfk_principles_applied %}
    <div style="margin-bottom: 20px;">
        {% for principle in data.gfk_principles_applied %}
        <span class="gfk-badge">✓ {{ principle }}</span>
        {% endfor %}
    </div>
    {% endif %}

    <div class="signature">
        <p>Mit freundlichen Grüßen</p>
        <p style="margin-top: 30px;">
            {{ data.teacher_name }}
            {% if data.teacher_title %}<br><span style="font-size: 10pt;">{{ data.teacher_title }}</span>{% endif %}
        </p>
    </div>

    {% if data.legal_references %}
    <div class="legal-references">
        <strong>Rechtliche Grundlagen:</strong><br>
        {% for ref in data.legal_references %}
        • {{ ref.law }} {{ ref.paragraph }}: {{ ref.title }}<br>
        {% endfor %}
    </div>
    {% endif %}

    <div style="font-size: 8pt; color: #999; margin-top: 30px; text-align: center;">
        Erstellt mit BreakPilot | {{ generated_at }}
    </div>
</body>
</html>
"""


def get_certificate_template_html() -> str:
    """Inline HTML-Template fuer Zeugnisse."""
    return """
<!DOCTYPE html>
<html lang="de">
<head>
    <meta charset="UTF-8">
    <title>Zeugnis - {{ data.student_name }}</title>
</head>
<body>
    <div class="certificate-header">
        {% if data.school_info %}
        <div class="school-name" style="font-size: 14pt;">{{ data.school_info.name }}</div>
        {% endif %}
        <div class="certificate-title">
            {% if data.certificate_type == 'halbjahr' %}
            Halbjahreszeugnis
            {% elif data.certificate_type == 'jahres' %}
            Jahreszeugnis
            {% else %}
            Abschlusszeugnis
            {% endif %}
        </div>
        <div>Schuljahr {{ data.school_year }}</div>
    </div>

    <div class="student-info">
        <table style="width: 100%;">
            <tr>
                <td><strong>Name:</strong> {{ data.student_name }}</td>
                <td><strong>Geburtsdatum:</strong> {{ data.student_birthdate }}</td>
            </tr>
            <tr>
                <td><strong>Klasse:</strong> {{ data.student_class }}</td>
                <td>&nbsp;</td>
            </tr>
        </table>
    </div>

    <h3>Leistungen</h3>
    <table class="grades-table">
        <thead>
            <tr>
                <th style="width: 70%;">Fach</th>
                <th style="width: 15%;">Note</th>
                <th style="width: 15%;">Punkte</th>
            </tr>
        </thead>
        <tbody>
            {% for subject in data.subjects %}
            <tr>
                <td>{{ subject.name }}</td>
                <td class="grade-cell" style="color: {{ subject.grade | grade_color }};">
                    {{ subject.grade }}
                </td>
                <td class="grade-cell">{{ subject.points | default('-') }}</td>
            </tr>
            {% endfor %}
        </tbody>
    </table>

    {% if data.social_behavior or data.work_behavior %}
    <h3>Verhalten</h3>
    <table class="grades-table" style="width: 50%;">
        {% if data.social_behavior %}
        <tr>
            <td>Sozialverhalten</td>
            <td class="grade-cell">{{ data.social_behavior }}</td>
        </tr>
        {% endif %}
        {% if data.work_behavior %}
        <tr>
            <td>Arbeitsverhalten</td>
            <td class="grade-cell">{{ data.work_behavior }}</td>
        </tr>
        {% endif %}
    </table>
    {% endif %}

    <div class="attendance-box">
        <strong>Versäumte Tage:</strong> {{ data.attendance.days_absent | default(0) }}
        (davon entschuldigt: {{ data.attendance.days_excused | default(0) }},
        unentschuldigt: {{ data.attendance.days_unexcused | default(0) }})
    </div>

    {% if data.remarks %}
    <div style="margin-bottom: 20px;">
        <strong>Bemerkungen:</strong><br>
        {{ data.remarks }}
    </div>
    {% endif %}

    <div style="margin-top: 30px;">
        <strong>Ausgestellt am:</strong> {{ data.issue_date }}
    </div>

    <div class="signatures-row">
        <div class="signature-block">
            <div class="signature-line">{{ data.class_teacher }}</div>
            <div style="font-size: 9pt;">Klassenlehrer/in</div>
        </div>
        <div class="signature-block">
            <div class="signature-line">{{ data.principal }}</div>
            <div style="font-size: 9pt;">Schulleiter/in</div>
        </div>
    </div>

    <div style="text-align: center; margin-top: 40px;">
        <div style="font-size: 9pt; color: #666;">Siegel der Schule</div>
    </div>
</body>
</html>
"""


def get_correction_template_html() -> str:
    """Inline HTML-Template fuer Korrektur-Uebersichten."""
    return """
<!DOCTYPE html>
<html lang="de">
<head>
    <meta charset="UTF-8">
    <title>Korrektur - {{ data.exam_title }}</title>
</head>
<body>
    <div class="exam-header">
        <h1 style="margin: 0; color: white;">{{ data.exam_title }}</h1>
        <div>{{ data.subject }} | {{ data.date }}</div>
    </div>

    <div class="student-info">
        <strong>{{ data.student.name }}</strong> | Klasse {{ data.student.class_name }}
    </div>

    <div class="result-box">
        <div class="result-grade" style="color: {{ data.grade | grade_color }};">
            Note: {{ data.grade }}
        </div>
        <div class="result-points">
            {{ data.achieved_points }} von {{ data.max_points }} Punkten
            ({{ data.percentage | round(1) }}%)
        </div>
    </div>

    <h3>Detaillierte Auswertung</h3>
    <div class="corrections-list">
        {% for item in data.corrections %}
        <div class="correction-item">
            <div class="correction-question">
                {{ item.question }}
            </div>
            {% if item.answer %}
            <div style="margin: 5px 0; font-style: italic; color: #555;">
                <strong>Antwort:</strong> {{ item.answer }}
            </div>
            {% endif %}
            <div>
                <strong>Punkte:</strong> {{ item.points }}
            </div>
            {% if item.feedback %}
            <div class="correction-feedback">
                {{ item.feedback }}
            </div>
            {% endif %}
        </div>
        {% endfor %}
    </div>

    {% if data.teacher_notes %}
    <div style="background: #e3f2fd; padding: 15px; border-radius: 5px; margin-bottom: 20px;">
        <strong>Lehrerkommentar:</strong><br>
        {{ data.teacher_notes }}
    </div>
    {% endif %}

    {% if data.ai_feedback %}
    <div style="background: #f3e5f5; padding: 15px; border-radius: 5px; margin-bottom: 20px;">
        <strong>KI-Feedback:</strong><br>
        {{ data.ai_feedback }}
    </div>
    {% endif %}

    {% if data.class_average or data.grade_distribution %}
    <h3>Klassenstatistik</h3>
    <table class="stats-table">
        {% if data.class_average %}
        <tr>
            <td><strong>Klassendurchschnitt:</strong></td>
            <td>{{ data.class_average }}</td>
        </tr>
        {% endif %}
        {% if data.grade_distribution %}
        <tr>
            <td><strong>Notenverteilung:</strong></td>
            <td>
                {% for grade, count in data.grade_distribution.items() %}
                Note {{ grade }}: {{ count }}x{% if not loop.last %}, {% endif %}
                {% endfor %}
            </td>
        </tr>
        {% endif %}
    </table>
    {% endif %}

    <div class="signature" style="margin-top: 40px;">
        <p style="font-size: 9pt; color: #666;">Datum: {{ data.date }}</p>
    </div>

    <div style="font-size: 8pt; color: #999; margin-top: 30px; text-align: center;">
        Erstellt mit BreakPilot | {{ generated_at }}
    </div>
</body>
</html>
"""