package com.backendsys.modules.queue.controller;

import com.backendsys.modules.common.config.security.annotations.Anonymous;
import com.backendsys.modules.queue.entity.QueuePosition;
import com.backendsys.modules.queue.entity.QueueRequest;
import com.backendsys.modules.queue.service.QueueService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

@RestController
public class QueueController {

    @Autowired
    private QueueService queueService;

    /**
     * 提交请求并加入队列
     */
    @Anonymous
    @PostMapping("/api/queue/submit")
    public String submitRequest() {
        QueueRequest request = new QueueRequest();
        int position = queueService.enqueue("taskQueue", request);
        return "Your request has been submitted. You are at position " + position + " in the queue. request id: " + request.getId();
    }

    /**
     * 启动处理队列中的请求
     */
    @Anonymous
    @GetMapping("/api/queue/startProcessing")
    public String startProcessing() {
        queueService.startProcessing("taskQueue");
        return "Processing has started.";
    }

    /**
     * 查询队列
     */
    @Anonymous
    @GetMapping("/api/queue/position")
    public String getPosition(@RequestParam String requestId) {
        QueuePosition positionInfo = queueService.getPosition("taskQueue", requestId);
        if (positionInfo.getPosition() == -1) {
            return "Request not found.";
        } else {
            return "Your request is at position " + positionInfo.getPosition() + " out of " + positionInfo.getTotal() + " in the queue.";
        }
    }

}