OpenIsle/src/main/java/com/openisle/controller/StatController.java

package com.openisle.controller;

import com.openisle.service.UserVisitService;
import lombok.RequiredArgsConstructor;
import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.time.LocalDate;
import java.util.Map;

@RestController
@RequestMapping("/api/stats")
@RequiredArgsConstructor
public class StatController {
    private final UserVisitService userVisitService;

    @GetMapping("/dau")
    public Map<String, Long> dau(@RequestParam(value = "date", required = false)
                                 @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date) {
        long count = userVisitService.countDau(date);
        return Map.of("dau", count);
    }
}