from flask import Blueprint, jsonify, request, g
from app.utils.jwt_decorators import jwt_required
from app.services.gradebook_service import GradebookService

api_students_bp = Blueprint('api_students', __name__)


@api_students_bp.route('/students/my-grades', methods=['GET'])
@jwt_required
def get_my_grades():
    """Consulta individual de calificaciones y estado académico del alumno logueado."""
    user = getattr(g, 'jwt_user', None)
    user_id = user.id if user else getattr(request, 'current_user_id', None)
    if not user_id:
        return jsonify({'error': 'Unauthorized', 'message': 'Usuario no autenticado.'}), 401

    try:
        grades = GradebookService.get_student_grades(user_id)
        return jsonify({
            'status': 'success',
            'student_id': user_id,
            'is_impersonating': getattr(g, 'is_impersonating', False),
            'data': grades
        }), 200
    except Exception as e:
        return jsonify({'error': 'ServerError', 'message': str(e)}), 500


@api_students_bp.route('/students/my-upcoming-milestones', methods=['GET'])
@jwt_required
def get_my_upcoming_milestones():
    """Próximas evaluaciones e hitos académicos con cuenta regresiva para el dashboard."""
    user = getattr(g, 'jwt_user', None)
    user_id = user.id if user else getattr(request, 'current_user_id', None)
    if not user_id:
        return jsonify({'error': 'Unauthorized', 'message': 'Usuario no autenticado.'}), 401

    limit = request.args.get('limit', default=5, type=int)
    try:
        milestones = GradebookService.get_student_upcoming_milestones(user_id, limit=limit)
        return jsonify({'status': 'success', 'data': milestones}), 200
    except Exception as e:
        return jsonify({'error': 'ServerError', 'message': str(e)}), 500