package controller

import (
	"context"
	"fmt"

	"cid/model/dto"
	"cid/service"
)

var StatReport = new(statReport)

type statReport struct{}

// GenerateReport 生成报表
func (c *statReport) GenerateReport(ctx context.Context, req *dto.ReportGenerateReq) (res *dto.ReportGenerateRes, err error) {
	var resp *dto.ReportGenerateResp

	switch req.ReportType {
	case "daily":
		resp, err = service.StatReport.GenerateDailyReport(ctx, req)
	case "weekly":
		resp, err = service.StatReport.GenerateWeeklyReport(ctx, req)
	case "monthly":
		resp, err = service.StatReport.GenerateMonthlyReport(ctx, req)
	case "quarterly":
		resp, err = service.StatReport.GenerateQuarterlyReport(ctx, req)
	case "yearly":
		resp, err = service.StatReport.GenerateYearlyReport(ctx, req)
	default:
		return nil, fmt.Errorf("不支持的报表类型: %s", req.ReportType)
	}

	if err != nil {
		return nil, err
	}

	return &dto.ReportGenerateRes{
		Data: resp,
	}, nil
}

// GetReportList 获取报表列表
func (c *statReport) GetReportList(ctx context.Context, req *dto.ReportListReq) (res *dto.ReportListRes, err error) {
	resp, err := service.StatReport.GetReportList(ctx, req)
	if err != nil {
		return nil, err
	}

	return &dto.ReportListRes{
		Data: resp,
	}, nil
}

// GetReportDetail 获取报表详情
func (c *statReport) GetReportDetail(ctx context.Context, req *dto.ReportDetailReq) (res *dto.ReportDetailRes, err error) {
	resp, err := service.StatReport.GetReportDetail(ctx, req.ReportID)
	if err != nil {
		return nil, err
	}

	return &dto.ReportDetailRes{
		Data: resp,
	}, nil
}

// QueryStats 统计查询
func (c *statReport) QueryStats(ctx context.Context, req *dto.StatQueryReq) (res *dto.StatQueryRes, err error) {
	// 这里调用统计查询服务
	// resp, err := service.StatReport.QueryStats(ctx, req)
	// 暂时返回示例数据
	resp := &dto.StatQueryResp{
		Data: []*dto.StatDataPoint{
			{
				Date:        "2024-01-01",
				Impressions: 1000,
				Clicks:      50,
				Revenue:     500.0,
				CTR:         5.0,
				AvgDuration: 30.5,
			},
		},
		Summary: &dto.StatSummary{
			TotalImpressions: 1000,
			TotalClicks:      50,
			TotalRevenue:     500.0,
			AvgCTR:           5.0,
			AvgDuration:      30.5,
			GrowthRate: &dto.GrowthRate{
				Impressions: 10.5,
				Clicks:      8.2,
				Revenue:     12.3,
				CTR:         -1.2,
			},
		},
	}

	return &dto.StatQueryRes{
		Data: resp,
	}, nil
}

// RealTimeStats 实时统计
func (c *statReport) RealTimeStats(ctx context.Context, req *dto.RealTimeStatReq) (res *dto.RealTimeStatRes, err error) {
	// 这里调用实时统计服务
	// resp, err := service.StatReport.GetRealTimeStats(ctx, req)
	// 暂时返回示例数据
	resp := &dto.RealTimeStatResp{
		CurrentHour: &dto.HourlyStat{
			Hour:        "14:00",
			Impressions: 120,
			Clicks:      6,
			Revenue:     60.0,
		},
		Last24Hours: []*dto.HourlyStat{
			{
				Hour:        "13:00",
				Impressions: 110,
				Clicks:      5,
				Revenue:     55.0,
			},
			{
				Hour:        "12:00",
				Impressions: 100,
				Clicks:      4,
				Revenue:     50.0,
			},
		},
	}

	return &dto.RealTimeStatRes{
		Data: resp,
	}, nil
}

// ExportReport 导出报表
func (c *statReport) ExportReport(ctx context.Context, req *dto.ExportReportReq) (res *dto.ExportReportRes, err error) {
	// 获取报表详情
	resp, err := service.StatReport.GetReportDetail(ctx, req.ReportID)
	if err != nil {
		return nil, err
	}

	// 返回导出数据，由上层处理HTTP响应
	return &dto.ExportReportRes{
		ReportData: resp,
	}, nil
}