its-rota-server/src/main/java/com/its/rota/server/controller/ItsRotaServerController.java

package com.its.rota.server.controller;

import com.its.rota.server.dto.CenterDto;
import com.its.rota.server.dto.NET;
import com.its.rota.server.repository.ApplicationRepository;
import lombok.RequiredArgsConstructor;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

@RestController
@RequiredArgsConstructor
@RequestMapping("/info")
public class ItsRotaServerController {

    private final ApplicationRepository repo;

    @GetMapping(value = "", produces = {"application/json; charset=utf8"})
    public String info() {
        String sep = System.getProperty("line.separator");
        String heading = "---------------------------------------------------------------------------------------------------------";

        CenterDto center = ApplicationRepository.center;

        StringBuilder sb = new StringBuilder();
        sb.append(heading + sep);
        sb.append("ITS Rota Server Running Information" + sep);
        sb.append(heading + sep);
        sb.append(String.format("%s, %s:%d, Traffic Time: %s",
                center.getCenterId(), center.getIpAddress(), center.getCommPort(), ApplicationRepository.checkTrafficTime) + sep);
        sb.append(heading + sep);
        sb.append(String.format("%s %-15.15s %-8.8s %-20.20s %-20.20s %-20.20s %7s %s",
                "---", "IP Address", "Network",
                "Connect Time", "Disconnect Time",
                "Last Send Time", "Count", "Center Name") + sep);
        sb.append(heading + sep);
        int total = 0;
        int onLine = 0;
        List<String> keySet = new ArrayList<>(this.repo.getCenterMap().keySet());
        Collections.sort(keySet);
        for (String key : keySet) {
            CenterDto region = this.repo.getCenterMap().get(key);
            if (region == null) {
                continue;
            }
            total++;
            String commStatus = "Closed";
            if (region.getNetState().getState() != NET.CLOSED) {
                commStatus = "Connect";
                onLine++;
            }
            sb.append(String.format("%s %-15.15s %-8.8s %-20.20s %-20.20s %-20.20s %7d %s",
                    region.getCenterId(), region.getIpAddress(), commStatus,
                    region.getNetState().getConnectTimeString(), region.getNetState().getDisconnectTimeString(),
                    region.getTraffic().getLastSendTime(), region.getTraffic().getTotalSends(),
                    region.getCenterInfo()) + sep);

        }
        sb.append(heading + sep);
        sb.append(String.format("Total : %d, OnLine(Connect): %d", total, onLine) + sep);
        sb.append(heading + sep);
        return sb.toString();
    }


}