nordabiz/blueprints/forum/routes.py

"""
Forum Routes
============

Forum topics, replies, and admin moderation.
"""

import logging
from datetime import datetime

from flask import render_template, request, redirect, url_for, flash, jsonify
from flask_login import login_required, current_user

from . import bp
from database import SessionLocal, ForumTopic, ForumReply, ForumAttachment
from utils.helpers import sanitize_input

# Logger
logger = logging.getLogger(__name__)

# Import FileUploadService (may not be available in all environments)
try:
    from file_upload_service import FileUploadService
    FILE_UPLOAD_AVAILABLE = True
except ImportError:
    FILE_UPLOAD_AVAILABLE = False
    logger.warning("FileUploadService not available for forum")


# ============================================================
# PUBLIC FORUM ROUTES
# ============================================================

@bp.route('/forum')
@login_required
def forum_index():
    """Forum - list of topics with category/status filters"""
    page = request.args.get('page', 1, type=int)
    per_page = 20
    category_filter = request.args.get('category', '')
    status_filter = request.args.get('status', '')

    db = SessionLocal()
    try:
        # Build query with optional filters
        query = db.query(ForumTopic)

        if category_filter and category_filter in ForumTopic.CATEGORIES:
            query = query.filter(ForumTopic.category == category_filter)

        if status_filter and status_filter in ForumTopic.STATUSES:
            query = query.filter(ForumTopic.status == status_filter)

        # Order by pinned first, then by last activity
        query = query.order_by(
            ForumTopic.is_pinned.desc(),
            ForumTopic.updated_at.desc()
        )

        total_topics = query.count()
        topics = query.limit(per_page).offset((page - 1) * per_page).all()

        return render_template(
            'forum/index.html',
            topics=topics,
            page=page,
            per_page=per_page,
            total_topics=total_topics,
            total_pages=(total_topics + per_page - 1) // per_page,
            category_filter=category_filter,
            status_filter=status_filter,
            categories=ForumTopic.CATEGORIES,
            statuses=ForumTopic.STATUSES,
            category_labels=ForumTopic.CATEGORY_LABELS,
            status_labels=ForumTopic.STATUS_LABELS
        )
    finally:
        db.close()


@bp.route('/forum/nowy', methods=['GET', 'POST'])
@login_required
def forum_new_topic():
    """Create new forum topic with category and attachments"""
    if request.method == 'POST':
        title = sanitize_input(request.form.get('title', ''), 255)
        content = request.form.get('content', '').strip()
        category = request.form.get('category', 'question')

        # Validate category
        if category not in ForumTopic.CATEGORIES:
            category = 'question'

        if not title or len(title) < 5:
            flash('Tytuł musi mieć co najmniej 5 znaków.', 'error')
            return render_template('forum/new_topic.html',
                                   categories=ForumTopic.CATEGORIES,
                                   category_labels=ForumTopic.CATEGORY_LABELS)

        if not content or len(content) < 10:
            flash('Treść musi mieć co najmniej 10 znaków.', 'error')
            return render_template('forum/new_topic.html',
                                   categories=ForumTopic.CATEGORIES,
                                   category_labels=ForumTopic.CATEGORY_LABELS)

        db = SessionLocal()
        try:
            topic = ForumTopic(
                title=title,
                content=content,
                author_id=current_user.id,
                category=category
            )
            db.add(topic)
            db.commit()
            db.refresh(topic)

            # Handle file upload
            if FILE_UPLOAD_AVAILABLE and 'attachment' in request.files:
                file = request.files['attachment']
                if file and file.filename:
                    is_valid, error_msg = FileUploadService.validate_file(file)
                    if is_valid:
                        stored_filename, rel_path, file_size, mime_type = FileUploadService.save_file(file, 'topic')
                        attachment = ForumAttachment(
                            attachment_type='topic',
                            topic_id=topic.id,
                            original_filename=file.filename,
                            stored_filename=stored_filename,
                            file_extension=stored_filename.rsplit('.', 1)[-1],
                            file_size=file_size,
                            mime_type=mime_type,
                            uploaded_by=current_user.id
                        )
                        db.add(attachment)
                        db.commit()
                    else:
                        flash(f'Załącznik: {error_msg}', 'warning')

            flash('Temat został utworzony.', 'success')
            return redirect(url_for('.forum_topic', topic_id=topic.id))
        finally:
            db.close()

    return render_template('forum/new_topic.html',
                           categories=ForumTopic.CATEGORIES,
                           category_labels=ForumTopic.CATEGORY_LABELS)


@bp.route('/forum/<int:topic_id>')
@login_required
def forum_topic(topic_id):
    """View forum topic with replies"""
    db = SessionLocal()
    try:
        topic = db.query(ForumTopic).filter(ForumTopic.id == topic_id).first()

        if not topic:
            flash('Temat nie istnieje.', 'error')
            return redirect(url_for('.forum_index'))

        # Increment view count (handle NULL)
        topic.views_count = (topic.views_count or 0) + 1
        db.commit()

        return render_template('forum/topic.html',
                               topic=topic,
                               category_labels=ForumTopic.CATEGORY_LABELS,
                               status_labels=ForumTopic.STATUS_LABELS)
    finally:
        db.close()


@bp.route('/forum/<int:topic_id>/odpowiedz', methods=['POST'])
@login_required
def forum_reply(topic_id):
    """Add reply to forum topic with optional attachment"""
    content = request.form.get('content', '').strip()

    if not content or len(content) < 3:
        flash('Odpowiedź musi mieć co najmniej 3 znaki.', 'error')
        return redirect(url_for('.forum_topic', topic_id=topic_id))

    db = SessionLocal()
    try:
        topic = db.query(ForumTopic).filter(ForumTopic.id == topic_id).first()

        if not topic:
            flash('Temat nie istnieje.', 'error')
            return redirect(url_for('.forum_index'))

        if topic.is_locked:
            flash('Ten temat jest zamknięty.', 'error')
            return redirect(url_for('.forum_topic', topic_id=topic_id))

        reply = ForumReply(
            topic_id=topic_id,
            author_id=current_user.id,
            content=content
        )
        db.add(reply)
        db.commit()
        db.refresh(reply)

        # Handle multiple file uploads (max 10)
        if FILE_UPLOAD_AVAILABLE:
            MAX_ATTACHMENTS = 10
            files = request.files.getlist('attachments[]')
            if not files:
                # Fallback for single file upload (backward compatibility)
                files = request.files.getlist('attachment')

            uploaded_count = 0
            errors = []

            for file in files[:MAX_ATTACHMENTS]:
                if file and file.filename:
                    is_valid, error_msg = FileUploadService.validate_file(file)
                    if is_valid:
                        stored_filename, rel_path, file_size, mime_type = FileUploadService.save_file(file, 'reply')
                        attachment = ForumAttachment(
                            attachment_type='reply',
                            reply_id=reply.id,
                            original_filename=file.filename,
                            stored_filename=stored_filename,
                            file_extension=stored_filename.rsplit('.', 1)[-1],
                            file_size=file_size,
                            mime_type=mime_type,
                            uploaded_by=current_user.id
                        )
                        db.add(attachment)
                        uploaded_count += 1
                    else:
                        errors.append(f'{file.filename}: {error_msg}')

            if uploaded_count > 0:
                db.commit()

            if errors:
                flash(f'Niektóre załączniki nie zostały dodane: {"; ".join(errors)}', 'warning')

        # Update topic updated_at
        topic.updated_at = datetime.now()
        db.commit()

        flash('Odpowiedź dodana.', 'success')
        return redirect(url_for('.forum_topic', topic_id=topic_id))
    finally:
        db.close()


# ============================================================
# ADMIN FORUM ROUTES
# ============================================================

@bp.route('/admin/forum')
@login_required
def admin_forum():
    """Admin panel for forum moderation"""
    if not current_user.is_admin:
        flash('Brak uprawnień do tej strony.', 'error')
        return redirect(url_for('.forum_index'))

    db = SessionLocal()
    try:
        # Get all topics with stats
        topics = db.query(ForumTopic).order_by(
            ForumTopic.created_at.desc()
        ).all()

        # Get recent replies
        recent_replies = db.query(ForumReply).order_by(
            ForumReply.created_at.desc()
        ).limit(50).all()

        # Stats
        total_topics = len(topics)
        total_replies = db.query(ForumReply).count()
        pinned_count = sum(1 for t in topics if t.is_pinned)
        locked_count = sum(1 for t in topics if t.is_locked)

        # Category and status stats
        category_counts = {}
        status_counts = {}
        for t in topics:
            cat = t.category or 'question'
            status = t.status or 'new'
            category_counts[cat] = category_counts.get(cat, 0) + 1
            status_counts[status] = status_counts.get(status, 0) + 1

        return render_template(
            'admin/forum.html',
            topics=topics,
            recent_replies=recent_replies,
            total_topics=total_topics,
            total_replies=total_replies,
            pinned_count=pinned_count,
            locked_count=locked_count,
            category_counts=category_counts,
            status_counts=status_counts,
            categories=ForumTopic.CATEGORIES,
            statuses=ForumTopic.STATUSES,
            category_labels=ForumTopic.CATEGORY_LABELS,
            status_labels=ForumTopic.STATUS_LABELS
        )
    finally:
        db.close()


@bp.route('/admin/forum/topic/<int:topic_id>/pin', methods=['POST'])
@login_required
def admin_forum_pin(topic_id):
    """Toggle topic pin status"""
    if not current_user.is_admin:
        return jsonify({'success': False, 'error': 'Brak uprawnień'}), 403

    db = SessionLocal()
    try:
        topic = db.query(ForumTopic).filter(ForumTopic.id == topic_id).first()
        if not topic:
            return jsonify({'success': False, 'error': 'Temat nie istnieje'}), 404

        topic.is_pinned = not topic.is_pinned
        db.commit()

        logger.info(f"Admin {current_user.email} {'pinned' if topic.is_pinned else 'unpinned'} topic #{topic_id}")
        return jsonify({
            'success': True,
            'is_pinned': topic.is_pinned,
            'message': f"Temat {'przypięty' if topic.is_pinned else 'odpięty'}"
        })
    finally:
        db.close()


@bp.route('/admin/forum/topic/<int:topic_id>/lock', methods=['POST'])
@login_required
def admin_forum_lock(topic_id):
    """Toggle topic lock status"""
    if not current_user.is_admin:
        return jsonify({'success': False, 'error': 'Brak uprawnień'}), 403

    db = SessionLocal()
    try:
        topic = db.query(ForumTopic).filter(ForumTopic.id == topic_id).first()
        if not topic:
            return jsonify({'success': False, 'error': 'Temat nie istnieje'}), 404

        topic.is_locked = not topic.is_locked
        db.commit()

        logger.info(f"Admin {current_user.email} {'locked' if topic.is_locked else 'unlocked'} topic #{topic_id}")
        return jsonify({
            'success': True,
            'is_locked': topic.is_locked,
            'message': f"Temat {'zamknięty' if topic.is_locked else 'otwarty'}"
        })
    finally:
        db.close()


@bp.route('/admin/forum/topic/<int:topic_id>/delete', methods=['POST'])
@login_required
def admin_forum_delete_topic(topic_id):
    """Delete topic and all its replies"""
    if not current_user.is_admin:
        return jsonify({'success': False, 'error': 'Brak uprawnień'}), 403

    db = SessionLocal()
    try:
        topic = db.query(ForumTopic).filter(ForumTopic.id == topic_id).first()
        if not topic:
            return jsonify({'success': False, 'error': 'Temat nie istnieje'}), 404

        topic_title = topic.title
        db.delete(topic)  # Cascade deletes replies
        db.commit()

        logger.info(f"Admin {current_user.email} deleted topic #{topic_id}: {topic_title}")
        return jsonify({
            'success': True,
            'message': 'Temat usunięty'
        })
    finally:
        db.close()


@bp.route('/admin/forum/reply/<int:reply_id>/delete', methods=['POST'])
@login_required
def admin_forum_delete_reply(reply_id):
    """Delete a reply"""
    if not current_user.is_admin:
        return jsonify({'success': False, 'error': 'Brak uprawnień'}), 403

    db = SessionLocal()
    try:
        reply = db.query(ForumReply).filter(ForumReply.id == reply_id).first()
        if not reply:
            return jsonify({'success': False, 'error': 'Odpowiedź nie istnieje'}), 404

        topic_id = reply.topic_id
        db.delete(reply)
        db.commit()

        logger.info(f"Admin {current_user.email} deleted reply #{reply_id} from topic #{topic_id}")
        return jsonify({
            'success': True,
            'message': 'Odpowiedź usunięta'
        })
    finally:
        db.close()


@bp.route('/admin/forum/topic/<int:topic_id>/status', methods=['POST'])
@login_required
def admin_forum_change_status(topic_id):
    """Change topic status (admin only)"""
    if not current_user.is_admin:
        return jsonify({'success': False, 'error': 'Brak uprawnień'}), 403

    data = request.get_json() or {}
    new_status = data.get('status')
    note = data.get('note', '').strip()

    if not new_status or new_status not in ForumTopic.STATUSES:
        return jsonify({'success': False, 'error': 'Nieprawidłowy status'}), 400

    db = SessionLocal()
    try:
        topic = db.query(ForumTopic).filter(ForumTopic.id == topic_id).first()
        if not topic:
            return jsonify({'success': False, 'error': 'Temat nie istnieje'}), 404

        old_status = topic.status
        topic.status = new_status
        topic.status_changed_by = current_user.id
        topic.status_changed_at = datetime.now()
        if note:
            topic.status_note = note
        db.commit()

        logger.info(f"Admin {current_user.email} changed topic #{topic_id} status: {old_status} -> {new_status}")
        return jsonify({
            'success': True,
            'status': new_status,
            'status_label': ForumTopic.STATUS_LABELS.get(new_status, new_status),
            'message': f"Status zmieniony na: {ForumTopic.STATUS_LABELS.get(new_status, new_status)}"
        })
    finally:
        db.close()