import io
import os
import zipfile
from datetime import datetime
from pathlib import Path

from flask import (
    Blueprint, render_template, request, redirect, url_for, flash,
    session, jsonify, send_file, current_app
)
from werkzeug.utils import secure_filename

from app import db
from app.models import User, Event, Guest, CheckIn
from app.services.qr_service import generate_qr_for_guest
from app.services.email_service import send_invitation
from app.services.excel_service import import_guests_from_excel, export_report_to_excel
from app.services.ticket_service import generate_ticket_image, generate_preview_ticket

main_bp = Blueprint("main", __name__)


# ---------------------------
# Helpers
# ---------------------------

def allowed_file(filename, extensions):
    return "." in filename and filename.rsplit(".", 1)[1].lower() in extensions


def current_user():
    user_id = session.get("user_id")
    if user_id:
        return User.query.get(user_id)
    return None


def login_user(user):
    session["user_id"] = user.id
    session["role"] = user.role
    session.permanent = True


def logout_user():
    session.pop("user_id", None)
    session.pop("role", None)
    session.pop("current_event_id", None)
    session.pop("checkin_event_id", None)


def require_role(*roles):
    def decorator(f):
        def wrapped(*args, **kwargs):
            user = current_user()
            if not user or not user.is_active or user.role not in roles:
                flash("Требуется авторизация", "warning")
                return redirect(url_for("main.login"))
            return f(*args, **kwargs)
        wrapped.__name__ = f.__name__
        return wrapped
    return decorator


def require_login(f):
    def wrapped(*args, **kwargs):
        user = current_user()
        if not user or not user.is_active:
            flash("Требуется авторизация", "warning")
            return redirect(url_for("main.login"))
        return f(*args, **kwargs)
    wrapped.__name__ = f.__name__
    return wrapped


def get_current_event():
    event_id = session.get("current_event_id")
    if event_id:
        user = current_user()
        event = Event.query.get(event_id)
        if event and user and user.can_manage_event(event):
            return event
    return None


def require_event(f):
    """Декоратор для маршрутов, требующих выбранного мероприятия (admin/organizer)."""
    def wrapped(*args, **kwargs):
        user = current_user()
        if not user:
            flash("Требуется авторизация", "warning")
            return redirect(url_for("main.login"))
        if not get_current_event():
            flash("Сначала выберите мероприятие", "warning")
            return redirect(url_for("main.admin_events"))
        return f(*args, **kwargs)
    wrapped.__name__ = f.__name__
    return wrapped


def available_events_for_user(user):
    if user.is_admin:
        return Event.query.order_by(Event.created_at.desc())
    return Event.query.filter_by(created_by_id=user.id).order_by(Event.created_at.desc())


# ---------------------------
# Auth
# ---------------------------

@main_bp.route("/login", methods=["GET", "POST"])
def login():
    if request.method == "POST":
        username = request.form.get("username", "").strip()
        password = request.form.get("password", "").strip()

        user = User.query.filter_by(username=username, is_active=True).first()
        if user and user.check_password(password):
            login_user(user)
            if user.is_staff:
                return redirect(url_for("main.check_in"))
            return redirect(url_for("main.admin_events"))
        else:
            flash("Неверный логин или пароль", "danger")

    return render_template("login.html")


@main_bp.route("/logout")
def logout():
    logout_user()
    flash("Вы вышли из системы", "info")
    return redirect(url_for("main.login"))


# ---------------------------
# Events
# ---------------------------

@main_bp.route("/admin/events")
@require_role("admin", "organizer")
def admin_events():
    user = current_user()
    events = available_events_for_user(user).all()
    for event in events:
        event.total_guests = Guest.query.filter_by(event_id=event.id, is_active=True).count()
        event.checked_in = db.session.query(CheckIn).join(Guest).filter(Guest.event_id == event.id).count()
    return render_template("admin/events.html", events=events)


@main_bp.route("/admin/events/add", methods=["GET", "POST"])
@require_role("admin", "organizer")
def admin_event_add():
    if request.method == "POST":
        name = request.form.get("name", "").strip()
        description = request.form.get("description", "").strip()
        location = request.form.get("location", "").strip()
        event_date_str = request.form.get("event_date", "").strip()

        if not name:
            flash("Название мероприятия обязательно", "danger")
            return redirect(url_for("main.admin_event_add"))

        event_date = None
        if event_date_str:
            try:
                event_date = datetime.fromisoformat(event_date_str)
            except ValueError:
                flash("Неверный формат даты", "danger")
                return redirect(url_for("main.admin_event_add"))

        event = Event(
            name=name,
            description=description,
            location=location,
            event_date=event_date,
            created_by_id=current_user().id,
        )
        db.session.add(event)
        db.session.commit()
        flash(f"Мероприятие «{event.name}» создано", "success")
        return redirect(url_for("main.admin_events"))

    return render_template("admin/event_form.html", event=None)


@main_bp.route("/admin/events/<int:event_id>/edit", methods=["GET", "POST"])
@require_role("admin", "organizer")
def admin_event_edit(event_id):
    event = Event.query.get_or_404(event_id)
    user = current_user()
    if not user.can_manage_event(event):
        flash("Нет доступа к этому мероприятию", "danger")
        return redirect(url_for("main.admin_events"))

    if request.method == "POST":
        event.name = request.form.get("name", "").strip()
        event.description = request.form.get("description", "").strip()
        event.location = request.form.get("location", "").strip()
        event_date_str = request.form.get("event_date", "").strip()

        if not event.name:
            flash("Название мероприятия обязательно", "danger")
            return redirect(url_for("main.admin_event_edit", event_id=event.id))

        if event_date_str:
            try:
                event.event_date = datetime.fromisoformat(event_date_str)
            except ValueError:
                flash("Неверный формат даты", "danger")
                return redirect(url_for("main.admin_event_edit", event_id=event.id))
        else:
            event.event_date = None

        event.is_active = bool(request.form.get("is_active"))
        db.session.commit()
        flash("Мероприятие обновлено", "success")
        return redirect(url_for("main.admin_events"))

    return render_template("admin/event_form.html", event=event)


@main_bp.route("/admin/events/<int:event_id>/delete", methods=["POST"])
@require_role("admin", "organizer")
def admin_event_delete(event_id):
    event = Event.query.get_or_404(event_id)
    user = current_user()
    if not user.can_manage_event(event):
        flash("Нет доступа к этому мероприятию", "danger")
        return redirect(url_for("main.admin_events"))

    if session.get("current_event_id") == event.id:
        session.pop("current_event_id", None)

    event.is_active = False
    db.session.commit()
    flash("Мероприятие деактивировано", "success")
    return redirect(url_for("main.admin_events"))


@main_bp.route("/admin/events/<int:event_id>/switch", methods=["POST"])
@require_role("admin", "organizer")
def admin_event_switch(event_id):
    event = Event.query.get_or_404(event_id)
    user = current_user()
    if not user.can_manage_event(event):
        flash("Нет доступа к этому мероприятию", "danger")
        return redirect(url_for("main.admin_events"))

    session["current_event_id"] = event.id
    flash(f"Выбрано мероприятие: {event.name}", "info")
    return redirect(url_for("main.admin_dashboard"))


@main_bp.route("/admin/events/<int:event_id>/ticket", methods=["GET", "POST"])
@require_role("admin", "organizer")
def admin_event_ticket(event_id):
    event = Event.query.get_or_404(event_id)
    user = current_user()
    if not user.can_manage_event(event):
        flash("Нет доступа к этому мероприятию", "danger")
        return redirect(url_for("main.admin_events"))

    if request.method == "POST":
        event.ticket_title = request.form.get("ticket_title", "").strip() or event.name
        event.ticket_subtitle = request.form.get("ticket_subtitle", "").strip()
        event.ticket_body_text = request.form.get("ticket_body_text", "").strip()
        event.ticket_background_color = request.form.get("ticket_background_color", "#ffffff").strip()
        event.ticket_text_color = request.form.get("ticket_text_color", "#000000").strip()
        event.ticket_accent_color = request.form.get("ticket_accent_color", "#0d6efd").strip()
        event.ticket_show_qr = bool(request.form.get("ticket_show_qr"))
        event.ticket_show_photo = bool(request.form.get("ticket_show_photo"))
        event.ticket_layout = request.form.get("ticket_layout", "portrait").strip()

        # Logo upload
        logo_file = request.files.get("logo_file")
        if logo_file and logo_file.filename:
            if allowed_file(logo_file.filename, {"png", "jpg", "jpeg", "gif", "webp", "bmp", "svg"}):
                filename = secure_filename(f"event_{event.id}_{logo_file.filename}")
                logo_folder = Path(current_app.config["LOGO_FOLDER"])
                logo_folder.mkdir(parents=True, exist_ok=True)
                logo_path = logo_folder / filename
                logo_file.save(str(logo_path))
                event.logo_filename = filename
            else:
                flash("Неверный формат логотипа. Разрешены: png, jpg, jpeg, gif, webp, bmp, svg.", "warning")

        # Logo deletion
        if request.form.get("delete_logo") and event.logo_filename:
            old_logo = Path(current_app.config["LOGO_FOLDER"]) / event.logo_filename
            if old_logo.exists():
                old_logo.unlink()
            event.logo_filename = None

        db.session.commit()
        flash("Дизайн билета сохранён", "success")
        return redirect(url_for("main.admin_event_ticket", event_id=event.id))

    return render_template("admin/ticket_constructor.html", event=event)


@main_bp.route("/admin/events/<int:event_id>/ticket/preview")
@require_role("admin", "organizer")
def admin_event_ticket_preview(event_id):
    event = Event.query.get_or_404(event_id)
    user = current_user()
    if not user.can_manage_event(event):
        flash("Нет доступа к этому мероприятию", "danger")
        return redirect(url_for("main.admin_events"))

    try:
        ticket_path = generate_preview_ticket(event)
        return send_file(str(ticket_path), mimetype="image/png")
    except Exception as e:
        flash(f"Ошибка генерации предпросмотра: {str(e)}", "danger")
        return redirect(url_for("main.admin_event_ticket", event_id=event.id))


# ---------------------------
# Admin Dashboard
# ---------------------------

@main_bp.route("/admin")
@require_role("admin", "organizer")
@require_event
def admin_dashboard():
    event = get_current_event()
    total = Guest.query.filter_by(event_id=event.id, is_active=True).count()
    checked_in = db.session.query(CheckIn).join(Guest).filter(Guest.event_id == event.id).count()
    not_checked_in = total - checked_in
    attendance_percent = round((checked_in / total) * 100, 1) if total else 0

    recent_check_ins = (
        CheckIn.query
        .join(Guest)
        .filter(Guest.event_id == event.id)
        .order_by(CheckIn.checked_in_at.desc())
        .limit(10)
        .all()
    )

    return render_template(
        "admin/dashboard.html",
        event=event,
        total=total,
        checked_in=checked_in,
        not_checked_in=not_checked_in,
        attendance_percent=attendance_percent,
        recent_check_ins=recent_check_ins,
    )


# ---------------------------
# Upload Excel / Photos
# ---------------------------

@main_bp.route("/admin/upload", methods=["GET", "POST"])
@require_role("admin", "organizer")
@require_event
def admin_upload():
    event = get_current_event()

    if request.method == "POST":
        # Excel upload
        excel_file = request.files.get("excel_file")
        if excel_file and excel_file.filename:
            if allowed_file(excel_file.filename, {"xlsx", "xls"}):
                try:
                    excel_stream = io.BytesIO(excel_file.read())
                    result = import_guests_from_excel(excel_stream, event_id=event.id)
                    flash(
                        f"Импорт завершён: добавлено {result['imported']}, обновлено {result['updated']} из {result['total']}",
                        "success",
                    )

                    # Generate QR codes for guests without QR
                    base_url = request.form.get("base_url", "").strip() or None
                    guests = Guest.query.filter_by(event_id=event.id).filter(Guest.qr_filename.is_(None)).all()
                    for guest in guests:
                        generate_qr_for_guest(guest, base_url=base_url)
                    db.session.commit()

                    flash(f"Сгенерировано QR-кодов: {len(guests)}", "success")
                except Exception as e:
                    flash(f"Ошибка импорта Excel: {str(e)}", "danger")
            else:
                flash("Неверный формат Excel-файла", "danger")

        # Photos upload (ZIP or multiple files)
        photo_files = request.files.getlist("photo_files")
        zip_file = request.files.get("zip_file")

        photo_folder = Path(current_app.config["PHOTO_FOLDER"])
        uploaded_count = 0

        if zip_file and zip_file.filename:
            if allowed_file(zip_file.filename, {"zip"}):
                zip_path = Path(current_app.config["UPLOAD_FOLDER"]) / "temp" / secure_filename(zip_file.filename)
                zip_path.parent.mkdir(parents=True, exist_ok=True)
                zip_file.save(str(zip_path))
                try:
                    with zipfile.ZipFile(zip_path, "r") as z:
                        z.extractall(str(photo_folder))
                    uploaded_count = len([name for name in z.namelist() if not name.endswith("/")])
                    flash(f"Из ZIP распаковано файлов: {uploaded_count}", "success")
                except Exception as e:
                    flash(f"Ошибка распаковки ZIP: {str(e)}", "danger")
                finally:
                    if zip_path.exists():
                        zip_path.unlink()
            else:
                flash("Неверный формат ZIP-архива", "danger")

        for photo in photo_files:
            if photo and photo.filename:
                filename = secure_filename(photo.filename)
                photo.save(str(photo_folder / filename))
                uploaded_count += 1

        if uploaded_count:
            flash(f"Загружено фото: {uploaded_count}", "success")

        return redirect(url_for("main.admin_upload"))

    return render_template("admin/upload.html", event=event)


# ---------------------------
# Guests management
# ---------------------------

@main_bp.route("/admin/guests")
@require_role("admin", "organizer")
@require_event
def admin_guests():
    event = get_current_event()
    search = request.args.get("q", "").strip()
    query = Guest.query.filter_by(event_id=event.id)
    if search:
        query = query.filter(Guest.full_name.ilike(f"%{search}%"))
    guests = query.order_by(Guest.full_name).all()
    return render_template("admin/guests.html", event=event, guests=guests, search=search)


@main_bp.route("/admin/guests/add", methods=["GET", "POST"])
@require_role("admin", "organizer")
@require_event
def admin_guest_add():
    event = get_current_event()

    if request.method == "POST":
        last_name = request.form.get("last_name", "").strip()
        first_name = request.form.get("first_name", "").strip()
        middle_name = request.form.get("middle_name", "").strip()
        full_name = " ".join([p for p in [last_name, first_name, middle_name] if p])

        if not full_name:
            flash("Фамилия и имя обязательны", "danger")
            return redirect(url_for("main.admin_guest_add"))

        guest = Guest(
            event_id=event.id,
            department=request.form.get("department", "").strip(),
            last_name=last_name,
            first_name=first_name,
            middle_name=middle_name,
            full_name=full_name,
            position=request.form.get("position", "").strip(),
            email=request.form.get("email", "").strip(),
            phone=request.form.get("phone", "").strip(),
            photo_filename=request.form.get("photo_filename", "").strip(),
        )
        db.session.add(guest)
        db.session.commit()

        base_url = request.form.get("base_url", "").strip() or None
        generate_qr_for_guest(guest, base_url=base_url)
        db.session.commit()

        if request.form.get("send_invitation"):
            try:
                send_invitation(guest)
                flash("Гость добавлен и приглашение отправлено", "success")
            except Exception as e:
                flash(f"Гость добавлен, но не удалось отправить письмо: {str(e)}", "warning")
        else:
            flash("Гость добавлен", "success")

        return redirect(url_for("main.admin_guests"))

    return render_template("admin/guest_form.html", event=event, guest=None)


@main_bp.route("/admin/guests/<int:guest_id>/edit", methods=["GET", "POST"])
@require_role("admin", "organizer")
@require_event
def admin_guest_edit(guest_id):
    event = get_current_event()
    guest = Guest.query.filter_by(id=guest_id, event_id=event.id).first_or_404()

    if request.method == "POST":
        guest.department = request.form.get("department", "").strip()
        guest.last_name = request.form.get("last_name", "").strip()
        guest.first_name = request.form.get("first_name", "").strip()
        guest.middle_name = request.form.get("middle_name", "").strip()
        guest.full_name = " ".join([
            p for p in [guest.last_name, guest.first_name, guest.middle_name] if p
        ]) or guest.full_name
        guest.position = request.form.get("position", "").strip()
        guest.email = request.form.get("email", "").strip()
        guest.phone = request.form.get("phone", "").strip()
        guest.photo_filename = request.form.get("photo_filename", "").strip()
        db.session.commit()
        flash("Данные гостя обновлены", "success")
        return redirect(url_for("main.admin_guests"))

    return render_template("admin/guest_form.html", event=event, guest=guest)


@main_bp.route("/admin/guests/<int:guest_id>/delete", methods=["POST"])
@require_role("admin", "organizer")
@require_event
def admin_guest_delete(guest_id):
    event = get_current_event()
    guest = Guest.query.filter_by(id=guest_id, event_id=event.id).first_or_404()
    guest.is_active = False
    db.session.commit()
    flash("Гость заблокирован (QR-код аннулирован)", "success")
    return redirect(url_for("main.admin_guests"))


@main_bp.route("/admin/guests/<int:guest_id>/resend", methods=["POST"])
@require_role("admin", "organizer")
@require_event
def admin_guest_resend(guest_id):
    event = get_current_event()
    guest = Guest.query.filter_by(id=guest_id, event_id=event.id).first_or_404()
    if not guest.qr_filename:
        generate_qr_for_guest(guest)
        db.session.commit()
    try:
        send_invitation(guest)
        flash("Приглашение повторно отправлено", "success")
    except Exception as e:
        flash(f"Ошибка отправки: {str(e)}", "danger")
    return redirect(url_for("main.admin_guests"))


@main_bp.route("/admin/send-invitations", methods=["POST"])
@require_role("admin", "organizer")
@require_event
def admin_send_invitations():
    event = get_current_event()
    guests = Guest.query.filter_by(event_id=event.id, is_active=True, invitation_sent=False).all()
    sent = 0
    failed = 0
    for guest in guests:
        if not guest.qr_filename:
            generate_qr_for_guest(guest)
        try:
            send_invitation(guest)
            sent += 1
        except Exception:
            failed += 1
    db.session.commit()
    flash(f"Отправлено приглашений: {sent}, ошибок: {failed}", "success" if failed == 0 else "warning")
    return redirect(url_for("main.admin_dashboard"))


# ---------------------------
# Reports
# ---------------------------

@main_bp.route("/admin/report")
@require_role("admin", "organizer")
@require_event
def admin_report():
    event = get_current_event()
    report_path = Path(current_app.config["UPLOAD_FOLDER"]) / "reports"
    report_path.mkdir(parents=True, exist_ok=True)
    filename = f"report_{event.id}_{datetime.now().strftime('%Y%m%d_%H%M%S')}.xlsx"
    output_path = report_path / filename

    try:
        export_report_to_excel(str(output_path), event_id=event.id, event_name=event.name)
        return send_file(str(output_path), as_attachment=True, download_name=filename)
    except Exception as e:
        flash(f"Ошибка формирования отчёта: {str(e)}", "danger")
        return redirect(url_for("main.admin_dashboard"))


# ---------------------------
# User management (admin only)
# ---------------------------

@main_bp.route("/admin/users")
@require_role("admin")
def admin_users():
    users = User.query.order_by(User.created_at.desc()).all()
    return render_template("admin/users.html", users=users)


@main_bp.route("/admin/users/add", methods=["GET", "POST"])
@require_role("admin")
def admin_user_add():
    if request.method == "POST":
        username = request.form.get("username", "").strip()
        password = request.form.get("password", "").strip()
        role = request.form.get("role", "staff").strip()

        if not username or not password:
            flash("Логин и пароль обязательны", "danger")
            return redirect(url_for("main.admin_user_add"))

        if role not in ("admin", "organizer", "staff"):
            flash("Неверная роль", "danger")
            return redirect(url_for("main.admin_user_add"))

        if User.query.filter_by(username=username).first():
            flash("Пользователь с таким логином уже существует", "danger")
            return redirect(url_for("main.admin_user_add"))

        user = User(username=username, role=role, is_active=True)
        user.set_password(password)
        db.session.add(user)
        db.session.commit()
        flash(f"Пользователь {username} создан", "success")
        return redirect(url_for("main.admin_users"))

    return render_template("admin/user_form.html", user=None)


@main_bp.route("/admin/users/<int:user_id>/edit", methods=["GET", "POST"])
@require_role("admin")
def admin_user_edit(user_id):
    user = User.query.get_or_404(user_id)
    if request.method == "POST":
        username = request.form.get("username", "").strip()
        password = request.form.get("password", "").strip()
        role = request.form.get("role", user.role).strip()
        is_active = bool(request.form.get("is_active"))

        if not username:
            flash("Логин обязателен", "danger")
            return redirect(url_for("main.admin_user_edit", user_id=user.id))

        if role not in ("admin", "organizer", "staff"):
            flash("Неверная роль", "danger")
            return redirect(url_for("main.admin_user_edit", user_id=user.id))

        existing = User.query.filter(User.username == username, User.id != user.id).first()
        if existing:
            flash("Пользователь с таким логином уже существует", "danger")
            return redirect(url_for("main.admin_user_edit", user_id=user.id))

        user.username = username
        user.role = role
        user.is_active = is_active
        if password:
            user.set_password(password)
        db.session.commit()
        flash("Пользователь обновлён", "success")
        return redirect(url_for("main.admin_users"))

    return render_template("admin/user_form.html", user=user)


@main_bp.route("/admin/users/<int:user_id>/delete", methods=["POST"])
@require_role("admin")
def admin_user_delete(user_id):
    user = User.query.get_or_404(user_id)
    if user.id == current_user().id:
        flash("Нельзя удалить самого себя", "danger")
        return redirect(url_for("main.admin_users"))

    user.is_active = False
    db.session.commit()
    flash("Пользователь заблокирован", "success")
    return redirect(url_for("main.admin_users"))


# ---------------------------
# Check-in
# ---------------------------

@main_bp.route("/check-in", methods=["GET", "POST"])
@require_role("admin", "organizer", "staff")
def check_in():
    user = current_user()
    token = request.args.get("token", "").strip()
    guest = None
    already_checked_in = False

    active_events = Event.query.filter_by(is_active=True).order_by(Event.created_at.desc()).all()

    if request.method == "POST":
        event_id = request.form.get("event_id", "").strip()
        if event_id:
            try:
                session["checkin_event_id"] = int(event_id)
            except ValueError:
                pass
        return redirect(url_for("main.check_in", token=token))

    checkin_event_id = session.get("checkin_event_id")
    checkin_event = None
    if checkin_event_id:
        checkin_event = Event.query.get(checkin_event_id)

    if token:
        guest = Guest.query.filter_by(token=token, is_active=True).first()
        if guest:
            already_checked_in = guest.is_checked_in
            if checkin_event is None:
                checkin_event = guest.event
                session["checkin_event_id"] = guest.event_id

    return render_template(
        "checkin/index.html",
        guest=guest,
        token=token,
        already_checked_in=already_checked_in,
        active_events=active_events,
        checkin_event=checkin_event,
    )


# ---------------------------
# API
# ---------------------------

@main_bp.route("/api/guests/search")
@require_role("admin", "organizer", "staff")
def api_guests_search():
    q = request.args.get("q", "").strip()
    event_id = request.args.get("event_id") or session.get("checkin_event_id")

    if len(q) < 2:
        return jsonify([])

    query = Guest.query.filter(Guest.is_active == True)
    if event_id:
        try:
            query = query.filter(Guest.event_id == int(event_id))
        except ValueError:
            pass

    guests = (
        query
        .filter(Guest.full_name.ilike(f"%{q}%"))
        .order_by(Guest.full_name)
        .limit(20)
        .all()
    )

    return jsonify([
        {
            "id": g.id,
            "full_name": g.build_full_name(),
            "department": g.department,
            "position": g.position,
            "email": g.email,
            "phone": g.phone,
            "photo_url": url_for("static", filename=f"uploads/photos/{g.photo_filename}") if g.photo_filename else "",
            "token": g.token,
            "checked_in": g.is_checked_in,
            "event_id": g.event_id,
            "event_name": g.event.name if g.event else "",
        }
        for g in guests
    ])


@main_bp.route("/api/check-in/<token>", methods=["POST"])
@require_role("admin", "organizer", "staff")
def api_check_in(token):
    guest = Guest.query.filter_by(token=token, is_active=True).first()
    if not guest:
        return jsonify({"success": False, "message": "Гость не найден или QR-код аннулирован"}), 404

    if guest.is_checked_in:
        return jsonify({
            "success": False,
            "already_checked_in": True,
            "checked_in_at": guest.last_check_in.isoformat(),
            "message": "Гость уже отмечен как вошедший",
        }), 409

    check_in_record = CheckIn(
        guest_id=guest.id,
        event_id=guest.event_id,
        device_info=request.headers.get("User-Agent", "")[:500],
    )
    db.session.add(check_in_record)
    db.session.commit()

    return jsonify({
        "success": True,
        "message": "Вход отмечен",
        "checked_in_at": check_in_record.checked_in_at.isoformat(),
        "guest": {
            "full_name": guest.build_full_name(),
            "department": guest.department,
            "position": guest.position,
            "phone": guest.phone,
        },
    })


@main_bp.route("/api/guest/<token>")
@require_role("admin", "organizer", "staff")
def api_guest_detail(token):
    guest = Guest.query.filter_by(token=token, is_active=True).first_or_404()
    return jsonify({
        "id": guest.id,
        "full_name": guest.build_full_name(),
        "department": guest.department,
        "position": guest.position,
        "email": guest.email,
        "phone": guest.phone,
        "photo_url": url_for("static", filename=f"uploads/photos/{guest.photo_filename}") if guest.photo_filename else "",
        "token": guest.token,
        "checked_in": guest.is_checked_in,
        "checked_in_at": guest.last_check_in.isoformat() if guest.last_check_in else None,
        "event_id": guest.event_id,
        "event_name": guest.event.name if guest.event else "",
    })


# ---------------------------
# Home
# ---------------------------

@main_bp.route("/")
def index():
    user = current_user()
    if not user:
        return redirect(url_for("main.login"))
    if user.is_staff:
        return redirect(url_for("main.check_in"))
    return redirect(url_for("main.admin_events"))


@main_bp.app_context_processor
def inject_globals():
    user = current_user()
    events = []
    current_event = None
    if user and (user.is_admin or user.is_organizer):
        events = available_events_for_user(user).filter_by(is_active=True).all()
        event_id = session.get("current_event_id")
        if event_id:
            current_event = Event.query.get(event_id)
    return dict(current_user=user, available_events=events, current_event=current_event)