package com.rongyichuang.player.api;

import com.rongyichuang.player.service.PlayerApplicationService;
import jakarta.servlet.http.HttpServletResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.*;

import java.io.IOException;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;

@RestController
@RequestMapping("/player/export")
public class PlayerExportController {

    private static final Logger log = LoggerFactory.getLogger(PlayerExportController.class);

    private final PlayerApplicationService playerApplicationService;

    public PlayerExportController(PlayerApplicationService playerApplicationService) {
        this.playerApplicationService = playerApplicationService;
    }

    /**
     * 导出比赛报名人员Excel
     */
    @GetMapping("/applications")
    public void exportApplications(
            @RequestParam(required = false) String name,
            @RequestParam(required = false) Long activityId,
            @RequestParam(required = false) Integer state,
            HttpServletResponse response) {
        try {
            log.info("导出比赛报名人员Excel, name: {}, activityId: {}, state: {}", name, activityId, state);
            
            // 获取Excel数据
            byte[] excelData = playerApplicationService.exportApplicationsToExcel(name, activityId, state);
            
            // 设置响应头
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            String fileName = "报名人员_" + System.currentTimeMillis() + ".xlsx";
            String encodedFileName = URLEncoder.encode(fileName, StandardCharsets.UTF_8.toString());
            response.setHeader(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=" + encodedFileName);
            response.setHeader(HttpHeaders.ACCESS_CONTROL_EXPOSE_HEADERS, HttpHeaders.CONTENT_DISPOSITION);
            response.setContentLength(excelData.length);
            
            // 写入响应
            response.getOutputStream().write(excelData);
            response.getOutputStream().flush();
        } catch (Exception e) {
            log.error("导出比赛报名人员Excel失败", e);
            try {
                response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
                response.getWriter().write("导出失败: " + e.getMessage());
            } catch (IOException ioException) {
                log.error("写入错误响应失败", ioException);
            }
        }
    }
}