import { Request, Response } from 'express';

const genServerList = (current: number, pageSize: number) => {
    const tableListDataSource: any[] = [];
    const statusList = ['online', 'offline', 'maintenance'];

    for (let i = 0; i < pageSize; i += 1) {
        const status = statusList[i % 3];
        tableListDataSource.push({
            key: i,
            id: `srv-${i}`,
            name: `Server-${i}`,
            ip: `192.168.1.${i}`,
            status,
            os: 'Ubuntu 22.04 LTS',
            cpu: Math.floor(Math.random() * 100),
            memory: Math.floor(Math.random() * 100),
            tags: ['web', 'production'],
            updatedAt: new Date().toISOString(),
            createdAt: new Date().toISOString(),
        });
    }
    return tableListDataSource;
};

let tableListDataSource = genServerList(1, 40);

export default {
    'GET /api/servers': (req: Request, res: Response) => {
        const { current = 1, pageSize = 20 } = req.query as any; // Cast to any to access pagination params

        // Simulate pagination filter
        let dataSource = [...tableListDataSource].slice(
            ((current as number) - 1) * (pageSize as number),
            (current as number) * (pageSize as number),
        );

        res.json({
            data: dataSource,
            total: tableListDataSource.length,
            success: true,
            pageSize,
            current: parseInt(`${current}`, 10) || 1,
        });
    },

    'POST /api/servers': (req: Request, res: Response) => {
        const newData = {
            ...req.body,
            updatedAt: new Date().toISOString(),
            createdAt: new Date().toISOString(),
            id: `srv-${Math.floor(Math.random() * 1000)}`,
            key: Math.floor(Math.random() * 1000),
        };
        tableListDataSource.unshift(newData);
        res.json(newData);
    },

    'PUT /api/servers/:id': (req: Request, res: Response) => {
        const { id } = req.params;
        const index = tableListDataSource.findIndex(item => item.id === id);
        if (index !== -1) {
            tableListDataSource[index] = { ...tableListDataSource[index], ...req.body };
            res.json(tableListDataSource[index]);
        } else {
            res.status(404).json({ success: false });
        }
    },

    'DELETE /api/servers/:id': (req: Request, res: Response) => {
        const { id } = req.params;
        tableListDataSource = tableListDataSource.filter(item => item.id !== id);
        res.json({ success: true });
    },

    'POST /api/servers/:id/restart': (req: Request, res: Response) => {
        res.json({ success: true, status: 'restarting' });
    },
};