
import networkx as nx
from scipy.optimize import minimize


class NetworkOptimizer:
    def __init__(self, devices):
        """基于图论的网络优化模型"""
        self.graph = self.build_topology_graph(devices)

    def build_topology_graph(self, devices):
        """构建网络拓扑图"""
        G = nx.Graph()
        for device in devices:
            G.add_node(device['ip'], type=device['type'])
        # 添加连接关系（示例）
        G.add_edge('192.168.1.1', '192.168.1.2', bandwidth=1000)
        return G

    def optimize_path(self, source, target):
        """计算最优路径"""
        return nx.shortest_path(self.graph, source, target)

    def bandwidth_optimization(self):
        """带宽优化模型"""

        def objective(x):
            # 最小化最大链路利用率
            return max(x)

        constraints = (
            {'type': 'eq', 'fun': lambda x: sum(x) - total_bandwidth}
        )

        result = minimize(objective, initial_guess, constraints=constraints)
        return result.x