package com.hlab.yanalyst.service;

import com.hlab.yanalyst.domain.category.CategoryService;
import com.hlab.yanalyst.domain.channel.ChannelVideo;
import com.hlab.yanalyst.domain.channel.ChannelVideoCurationService;
import com.hlab.yanalyst.domain.publish.PublishService;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

/**
 * 홈 대시보드용 단일 집계 — 파이프라인(수집→큐레이션→발행) 현황을 한 번에 묶어 반환한다.
 * 각 도메인 서비스의 집계를 조합만 한다(리포지토리 직접 접근 없음).
 */
@Service
@RequiredArgsConstructor
@Transactional(readOnly = true)
public class DashboardService {

    private final ChannelVideoCurationService curationService;
    private final CategoryService categoryService;
    private final PublishService publishService;

    public Map<String, Object> summary() {
        Map<String, Object> result = new LinkedHashMap<>();
        result.put("pipeline", curationService.pipelineStats());       // total, byStatus, bySource, shorts, longForm
        result.put("categories", categoryService.distribution());      // categories[], uncategorized
        result.put("publish", publishService.dashboardSummary());      // byStatus, total, recent
        List<ChannelVideo> outperformers = curationService.findOutperformers(5, BigDecimal.ONE);
        result.put("outperformers", outperformers);
        return result;
    }
}