# inventory-backend/app/api/v1/inbound/semi.py
from flask import Blueprint, request, jsonify
from app.services.inbound.semi_service import SemiInboundService
from app.utils.decorators import permission_required, audit_log
import traceback

# === 这一行非常关键，绝对不能丢！===
inbound_semi_bp = Blueprint('stock_semi', __name__)

def get_current_user_permissions():
    from flask_jwt_extended import get_jwt
    from app.services.auth_service import AuthService
    claims = get_jwt()
    user_role = claims.get('role')
    user_company = claims.get('company_name', '')
    if not user_role: return []
    from app.utils.constants import UserRole
    if str(user_role).strip().upper() == UserRole.SUPER_ADMIN: return ['inbound_semi:*']
    perm_dict = AuthService.get_user_permissions(user_role, company_name=user_company)
    return perm_dict.get('menus', []) + perm_dict.get('elements', [])

def filter_item_by_permissions(item_dict, user_permissions):
    """严格 Default Deny 字段过滤 (see app/utils/field_permissions.py)"""
    from app.utils.field_permissions import apply_strict_rbac
    return apply_strict_rbac(item_dict, 'StockSemi', user_permissions)

@inbound_semi_bp.route('/search-base', methods=['GET'])
@permission_required('inbound_semi')
def search_base():
    try:
        keyword = request.args.get('keyword', '')
        page = request.args.get('page', 1, type=int)
        result = SemiInboundService.search_base_material(keyword, page)
        return jsonify({"code": 200, "msg": "success", "data": result})
    except Exception as e:
        traceback.print_exc()
        return jsonify({"code": 500, "msg": str(e)}), 500

@inbound_semi_bp.route('/search-bom', methods=['GET'])
@permission_required('inbound_semi')
def search_bom():
    try:
        keyword = request.args.get('keyword', '')
        parent_spec = request.args.get('parent_spec', None)
        data = SemiInboundService.search_bom_options(keyword, parent_spec=parent_spec)
        return jsonify({"code": 200, "msg": "success", "data": data})
    except Exception as e:
        traceback.print_exc()
        return jsonify({"code": 500, "msg": str(e)}), 500

@inbound_semi_bp.route('/list', methods=['GET'])
@permission_required('inbound_semi')
def get_list():
    try:
        page = request.args.get('page', 1, type=int)
        limit = request.args.get('pageSize', 15, type=int)
        keyword = request.args.get('keyword', '')
        sku = request.args.get('sku', '')
        search_field = request.args.get('searchField', 'all')
        statuses_str = request.args.get('statuses', '')
        statuses = statuses_str.split(',') if statuses_str else []
        company = request.args.get('company', '')
        category = request.args.get('category', '')
        material_type = request.args.get('material_type', '')
        order_by_column = request.args.get('orderByColumn', '')
        is_asc = request.args.get('isAsc', '')
        advanced_filters_str = request.args.get('advancedFilters', '')

        # 准备额外筛选字典
        extra_filters = {}
        if company:
            extra_filters['company'] = company
        if category:
            extra_filters['category'] = category
        if material_type:
            extra_filters['material_type'] = material_type
        if order_by_column:
            extra_filters['order_by_column'] = order_by_column
        if is_asc:
            extra_filters['is_asc'] = is_asc
        if advanced_filters_str:
            try:
                import json
                advanced_filters = json.loads(advanced_filters_str)
                extra_filters['advanced_filters'] = advanced_filters
            except Exception:
                extra_filters['advanced_filters'] = []

        # 调用服务，传入所有参数
        result = SemiInboundService.get_list(
            page, limit, keyword, sku, search_field, statuses,
            **extra_filters
        )
        user_permissions = get_current_user_permissions()
        if result.get('items'):
            result['items'] = [filter_item_by_permissions(item, user_permissions) for item in result['items']]
        return jsonify({"code": 200, "msg": "success", "data": result})
    except Exception as e:
        traceback.print_exc()
        return jsonify({"code": 500, "msg": str(e)}), 500

@inbound_semi_bp.route('/submit', methods=['POST'])
@permission_required('inbound_semi:operation')
@audit_log(
    module='半成品入库',
    action='新增',
    get_target_name_fn=lambda: request.get_json().get('material_name') if request.get_json() else None
)
def submit():
    try:
        data = request.get_json()
        if not data: return jsonify({"code": 400, "msg": "No data"}), 400
        
        # 库位必填校验（安全兜底）
        location = data.get('warehouse_location', '').strip()
        if not location:
            return jsonify({"code": 400, "msg": "入库失败：库位为必填项，不能为空！"}), 400
        
        user_permissions = get_current_user_permissions()
        if 'inbound_semi:*' not in user_permissions:
            for field in ('raw_material_cost', 'manual_cost', 'unit_total_cost', 'total_price'):
                perm_code = f'inbound_semi:{field}'
                if field in data and perm_code not in user_permissions:
                    data.pop(field, None)
        new_stock = SemiInboundService.handle_inbound(data)
        # ★ Fail-Closed: 入库成功响应剥离成本字段
        resp = new_stock.to_dict()
        for k in ('raw_material_cost', 'manual_cost', 'unit_total_cost', 'total_price'):
            resp.pop(k, None)
        return jsonify({"code": 200, "msg": "入库成功", "data": resp})
    except Exception as e:
        traceback.print_exc()
        return jsonify({"code": 500, "msg": str(e)}), 500

@inbound_semi_bp.route('/<int:id>', methods=['PUT'])
@permission_required('inbound_semi:operation')
@audit_log(
    module='半成品入库',
    action='修改',
    get_target_id_fn=lambda: request.view_args.get('id'),
    get_target_name_fn=lambda: request.get_json().get('material_name') if request.get_json() else None
)
def update_semi(id):
    try:
        data = request.get_json()
        user_permissions = get_current_user_permissions()
        if 'inbound_semi:*' not in user_permissions:
            for field in ('raw_material_cost', 'manual_cost', 'unit_total_cost', 'total_price'):
                perm_code = f'inbound_semi:{field}'
                if field in data and perm_code not in user_permissions:
                    data.pop(field, None)
        SemiInboundService.update_inbound(id, data)
        return jsonify({"code": 200, "msg": "更新成功"})
    except Exception as e:
        traceback.print_exc()
        return jsonify({"code": 500, "msg": str(e)}), 500

@inbound_semi_bp.route('/<int:id>', methods=['DELETE'])
@permission_required('inbound_semi:operation')
@audit_log(
    module='半成品入库',
    action='删除',
    get_target_id_fn=lambda: request.view_args.get('id')
)
def delete_semi(id):
    try:
        material_name = SemiInboundService.delete_inbound(id)
        return jsonify({"code": 200, "msg": "删除成功", "material_name": material_name})
    except ValueError as ve:
        return jsonify({"code": 400, "msg": str(ve)})
    except Exception as e:
        import traceback
        traceback.print_exc()
        return jsonify({"code": 500, "msg": f"服务器内部错误详情: {str(e)}"}), 500

@inbound_semi_bp.route('/<int:id>/history', methods=['GET'])
@permission_required('inbound_semi')
def get_history(id):
    try:
        data = SemiInboundService.get_outbound_history(id)
        return jsonify({"code": 200, "msg": "success", "data": data})
    except Exception as e:
        traceback.print_exc()
        return jsonify({"code": 500, "msg": str(e)}), 500

@inbound_semi_bp.route('/suggestions/users', methods=['GET'])
@permission_required('inbound_semi')
def get_user_suggestions():
    keyword = request.args.get('keyword', '')
    data = SemiInboundService.search_system_users(keyword)
    return jsonify({"code": 200, "msg": "success", "data": data})

@inbound_semi_bp.route('/options', methods=['GET'])
@permission_required('inbound_semi')
def get_options():
    try:
        data = SemiInboundService.get_filter_options()
        return jsonify({"code": 200, "msg": "success", "data": data})
    except Exception as e:
        return jsonify({"code": 500, "msg": str(e)}), 500

@inbound_semi_bp.route('/suggestions/managers', methods=['GET'])
@permission_required('inbound_semi')
def get_manager_history():
    keyword = request.args.get('keyword', '')
    try:
        data = SemiInboundService.get_history_managers(keyword)
        return jsonify({"code": 200, "msg": "success", "data": data})
    except Exception as e:
        traceback.print_exc()
        return jsonify({"code": 500, "msg": str(e)}), 500

# ------------------------------------------------------------------
# 9. BOM 原材料成本自动核算 (新增)
# ------------------------------------------------------------------
@inbound_semi_bp.route('/calculate-bom-cost', methods=['GET'])
@permission_required('inbound_semi')
def calculate_bom_cost():
    try:
        bom_code = request.args.get('bom_code')
        bom_version = request.args.get('bom_version')
        if not bom_code or not bom_version:
            return jsonify({"code": 400, "msg": "bom_code和bom_version不能为空"}), 400
        cost = SemiInboundService.calculate_bom_cost(bom_code, bom_version)
        return jsonify({"code": 200, "msg": "success", "data": cost})
    except Exception as e:
        traceback.print_exc()
        return jsonify({"code": 500, "msg": str(e)}), 500


# ------------------------------------------------------------------
# 获取最近一次入库的库位（跨表查询）
# ------------------------------------------------------------------
@inbound_semi_bp.route('/last-location', methods=['GET'])
@permission_required('inbound_semi')
def get_last_location():
    """
    获取指定物料最近一次入库的库位
    查询顺序：半成品入库 -> 采购入库 -> 成品入库，返回最新入库的库位
    """
    base_id = request.args.get('base_id', type=int)
    if not base_id:
        return jsonify({"code": 400, "msg": "base_id required"}), 400

    location = SemiInboundService.get_last_location_by_base_id(base_id)
    return jsonify({"code": 200, "msg": "success", "data": {"location": location}})