"""
Wizard de création d'équipements par lot - GMAO Collège
"""
from flask import Blueprint, render_template, request, redirect, url_for, flash, jsonify, current_app
from flask_login import login_required
from app_new.extensions import db
from app_new.core.models.equipment import Equipment, EquipmentCategory
from app_new.core.models.maintenance import Lot
from app_new.core.models.college import Room, Building, Zone, RoomType

wizard_bp = Blueprint('wizard', __name__, url_prefix='/wizard', template_folder='templates')


@wizard_bp.route('/equipments')
@login_required
def equipment_wizard():
    """Page principale du wizard de création d'équipements."""
    categories = EquipmentCategory.query.order_by(EquipmentCategory.name).all()
    buildings = Building.query.order_by(Building.name).all()
    room_types = RoomType.query.order_by(RoomType.name).all()
    
    # Récupérer les lots groupés par catégorie (relation directe)
    lots_by_category = {}
    for cat in categories:
        lots_by_category[cat.id] = [{'id': lot.id, 'name': lot.name} for lot in cat.lots]
    
    # Tous les lots pour fallback
    lots = Lot.query.order_by(Lot.name).all()
    
    return render_template('wizard/equipment_wizard.html',
                          lots=lots,
                          categories=categories,
                          buildings=buildings,
                          room_types=room_types,
                          lots_by_category=lots_by_category)


@wizard_bp.route('/api/rooms/<int:building_id>')
@login_required
def get_rooms(building_id):
    """Récupère les salles d'un bâtiment."""
    rooms = Room.query.filter_by(building_id=building_id).order_by(Room.name).all()
    return jsonify([{
        'id': r.id,
        'name': r.name,
        'zone': r.zone.name if r.zone else None
    } for r in rooms])


@wizard_bp.route('/api/zones/<int:building_id>')
@login_required
def get_zones(building_id):
    """Récupère les zones d'un bâtiment."""
    zones = Zone.query.filter_by(building_id=building_id).order_by(Zone.name).all()
    return jsonify([{
        'id': z.id,
        'name': z.name
    } for z in zones])


@wizard_bp.route('/api/lot_tasks/<int:lot_id>')
@login_required
def get_lot_tasks(lot_id):
    """Récupère les tâches préventives d'un lot."""
    from app_new.core.models.maintenance import LotTask
    
    tasks = LotTask.query.filter_by(lot_id=lot_id).order_by(LotTask.num_tache).all()
    return jsonify([{
        'id': t.id,
        'num_tache': t.num_tache,
        'tache': t.tache,
        'periodicite': t.periodicite,
        'contrat': t.contrat,
        'gestionnaire': t.gestionnaire,
        'type_maintenance': t.type_maintenance
    } for t in tasks])


@wizard_bp.route('/equipments/create', methods=['POST'])
@login_required
def create_equipments():
    """Crée les équipements selon les paramètres du wizard."""
    try:
        data = request.get_json()
        
        lot_id = data.get('lot_id')
        category_id = data.get('category_id')
        equipment_name = data.get('name', '').strip()  # Nom personnalisé
        parent_name = data.get('parent_name')
        create_parent = data.get('create_parent', False)
        building_id = data.get('building_id')
        zone_id = data.get('zone_id')
        rooms_data = data.get('rooms', [])  # [{room_id, count}, ...]
        tracked_individually = data.get('tracked_individually', False)
        
        # Debug
        current_app.logger.info(f"Création équipements: tracked_individually={tracked_individually}, rooms={rooms_data}")
        
        if not lot_id or not category_id:
            return jsonify({'error': 'Lot et catégorie requis'}), 400
        
        if not rooms_data:
            return jsonify({'error': 'Au moins une salle requise'}), 400
        
        lot = Lot.query.get(lot_id)
        category = EquipmentCategory.query.get(category_id)
        
        # Nom de base: personnalisé ou catégorie
        base_name = equipment_name if equipment_name else category.name
        
        created_equipments = []
        
        # Étape 1: Créer le parent global (si demandé)
        parent = None
        if create_parent and parent_name:
            parent = Equipment(
                name=parent_name,
                lot_id=lot_id,
                category_id=category_id,
                is_group=True,
                parent_id=None
            )
            db.session.add(parent)
            db.session.flush()  # Pour avoir l'ID
        
        # Étape 2: Pour chaque salle, créer le groupe et les individuels
        for room_data in rooms_data:
            room_id = room_data.get('room_id')
            count = room_data.get('count', 1)
            
            room = Room.query.get(room_id)
            if not room:
                continue
            
            if tracked_individually:
                # Avec suivi individuel: créer un groupe + des individus
                room_group = Equipment(
                    name=f"{base_name} {room.name}",
                    lot_id=lot_id if not parent else None,
                    category_id=category_id if not parent else None,
                    is_group=True,
                    parent_id=parent.id if parent else None,
                    room_id=room_id,
                    quantity=1
                )
                db.session.add(room_group)
                db.session.flush()
                
                created_equipments.append({
                    'type': 'group',
                    'name': room_group.name,
                    'room': room.name,
                    'quantity': 1
                })
                
                # Créer les équipements individuels
                if count > 1:
                    for i in range(1, count + 1):
                        individual = Equipment(
                            name=f"{base_name} {i}",
                            lot_id=lot_id,  # Hériter du lot
                            category_id=category_id,  # Hériter de la catégorie
                            is_group=False,
                            tracked_individually=True,
                            parent_id=room_group.id,
                            room_id=room_id,
                            position=f"{base_name} n°{i}"
                        )
                        db.session.add(individual)
                        
                        created_equipments.append({
                            'type': 'individual',
                            'name': individual.name,
                            'room': room.name
                        })
            else:
                # Sans suivi individuel: créer un seul équipement avec quantity
                equipment = Equipment(
                    name=f"{base_name} {room.name}",
                    lot_id=lot_id if not parent else None,
                    category_id=category_id if not parent else None,
                    is_group=False,
                    parent_id=parent.id if parent else None,
                    room_id=room_id,
                    quantity=count
                )
                db.session.add(equipment)
                db.session.flush()
                
                created_equipments.append({
                    'type': 'equipment',
                    'name': equipment.name,
                    'room': room.name,
                    'quantity': count
                })
        
        db.session.commit()
        
        # Créer les tâches planifiées pour tous les équipements créés
        for eq in created_equipments:
            # Récupérer l'équipement depuis la DB pour avoir son ID
            equipment = Equipment.query.filter_by(name=eq['name']).first()
            if equipment and equipment.effective_lot_id:
                equipment.create_scheduled_tasks_from_lot()
        
        return jsonify({
            'success': True,
            'count': len(created_equipments),
            'equipments': created_equipments
        })
        
    except Exception as e:
        db.session.rollback()
        return jsonify({'error': str(e)}), 500


@wizard_bp.route('/equipments/preview', methods=['POST'])
@login_required
def preview_equipments():
    """Prévisualise les équipements qui seront créés."""
    data = request.get_json()
    
    lot_id = data.get('lot_id')
    category_id = data.get('category_id')
    parent_name = data.get('parent_name')
    create_parent = data.get('create_parent', False)
    rooms_data = data.get('rooms', [])
    tracked_individually = data.get('tracked_individually', False)
    
    lot = Lot.query.get(lot_id) if lot_id else None
    category = EquipmentCategory.query.get(category_id) if category_id else None
    
    preview = []
    
    # Parent global
    if create_parent and parent_name:
        preview.append({
            'level': 0,
            'name': parent_name,
            'type': 'Groupe parent',
            'lot': lot.name if lot else '-',
            'category': category.name if category else '-',
            'room': '-'
        })
    
    # Par salle
    for room_data in rooms_data:
        room_id = room_data.get('room_id')
        count = room_data.get('count', 1)
        
        room = Room.query.get(room_id)
        if not room:
            continue
        
        # Groupe salle
        level = 1 if create_parent else 0
        preview.append({
            'level': level,
            'name': f"{category.name} {room.name}",
            'type': 'Groupe salle',
            'lot': lot.name if lot else '-',
            'category': category.name if category else '-',
            'room': room.name
        })
        
        # Individuels
        if tracked_individually:
            for i in range(1, count + 1):
                preview.append({
                    'level': level + 1,
                    'name': f"{category.name} {i}",
                    'type': 'Individuel',
                    'lot': '(hérité)',
                    'category': '(hérité)',
                    'room': room.name
                })
    
    return jsonify({
        'preview': preview,
        'total': len(preview)
    })