package business

import (
	"context"
	"kra/internal/biz/business"
	"kra/internal/service/dto"
	"strings"
	"time"
)

type AnalyticsUsecase interface {
	List(context.Context, business.AnalyticsKind, business.AnalyticsFilter, int, int) (*business.AnalyticsPage, error)
	ListAll(context.Context, business.AnalyticsKind, business.AnalyticsFilter) (*business.AnalyticsPage, error)
}
type AnalyticsService struct{ uc AnalyticsUsecase }

func NewAnalyticsService(uc *business.AnalyticsUsecase) *AnalyticsService {
	return &AnalyticsService{uc: uc}
}
func analyticsRequest(req *dto.AnalyticsQuery) (business.AnalyticsFilter, error) {
	if req == nil {
		return business.AnalyticsFilter{}, business.ErrAnalyticsInput
	}
	sources, err := normalizePlatforms(req.Sources)
	if err != nil {
		return business.AnalyticsFilter{}, err
	}
	f := business.AnalyticsFilter{Sources: sources, GameNames: splitQueryValues(req.GameNames), PromoteName: strings.TrimSpace(req.PromoteName), PromoteType: req.PromoteType, SortField: strings.TrimSpace(req.SortField), Ascending: strings.EqualFold(strings.TrimSpace(req.SortOrder), "asc")}
	f.HasRegister, f.HasPay = req.HasRegister, req.HasPay
	begin, end := strings.TrimSpace(req.BeginTime), strings.TrimSpace(req.EndTime)
	location := time.FixedZone("Asia/Shanghai", 8*3600)
	if begin != "" {
		b, err := time.ParseInLocation("2006-01-02", begin, location)
		if err != nil {
			return f, business.ErrAnalyticsDate
		}
		f.StartDate = &b
	}
	if end != "" {
		e, err := time.ParseInLocation("2006-01-02", end, location)
		if err != nil || f.StartDate != nil && e.Before(*f.StartDate) {
			return f, business.ErrAnalyticsDate
		}
		f.EndDate = &e
	}
	return f, nil
}
func analyticsMetrics(row *business.AnalyticsRow) dto.AnalyticsMetrics {
	return dto.AnalyticsMetrics{Register: row.Counts.Register, Active: row.Counts.Active, PayUsers: row.Counts.Pay, NewPayUsers: row.Counts.NewPay, TotalPay: row.Pay, PayRate: row.PayRate}
}
func channelAnalyticsRow(row *business.AnalyticsRow, summary bool) *dto.ChannelAnalyticsRow {
	result := &dto.ChannelAnalyticsRow{SourceDB: row.SourceDB, SourceDBLabel: business.PlatformName(row.SourceDB), PromoteName: row.Name, PromoteType: row.PromoteType, BusierName: row.BusinessName(), AnalyticsMetrics: analyticsMetrics(row)}
	if !summary {
		result.PromoteID = &row.ID
	}
	return result
}
func gameAnalyticsRow(row *business.AnalyticsRow, summary bool) *dto.GameAnalyticsRow {
	result := &dto.GameAnalyticsRow{SourceDB: row.SourceDB, SourceDBLabel: business.PlatformName(row.SourceDB), GameName: row.Name, AnalyticsMetrics: analyticsMetrics(row), ARPU: row.ARPU, ARPPU: row.ARPPU}
	if !summary {
		result.GameID = &row.ID
	}
	return result
}
func (s *AnalyticsService) Channels(ctx context.Context, req *dto.AnalyticsQuery) (*dto.ChannelAnalyticsPage, error) {
	f, err := analyticsRequest(req)
	if err != nil {
		return nil, err
	}
	page, err := s.uc.List(ctx, business.ChannelAnalytics, f, req.Page, req.PageSize)
	if err != nil {
		return nil, err
	}
	result := &dto.ChannelAnalyticsPage{Rows: []*dto.ChannelAnalyticsRow{}, Total: page.Total, BeginTime: page.Begin, EndTime: page.End, Available: page.Available}
	for _, row := range page.Rows {
		result.Rows = append(result.Rows, channelAnalyticsRow(row, false))
	}
	if page.Summary != nil {
		result.EffectiveCount = &page.EffectiveCount
		result.Summary = channelAnalyticsRow(page.Summary, true)
		result.ChannelCount = &page.Total
		result.TotalRegisterCount = &page.Summary.Counts.Register
		result.TotalPayAmount = &page.Summary.Pay
		result.AvgPayRate = &page.Summary.PayRate
	}
	return result, nil
}
func (s *AnalyticsService) Games(ctx context.Context, req *dto.AnalyticsQuery) (*dto.GameAnalyticsPage, error) {
	f, err := analyticsRequest(req)
	if err != nil {
		return nil, err
	}
	page, err := s.uc.List(ctx, business.GameAnalytics, f, req.Page, req.PageSize)
	if err != nil {
		return nil, err
	}
	result := &dto.GameAnalyticsPage{Rows: []*dto.GameAnalyticsRow{}, Total: page.Total, BeginTime: page.Begin, EndTime: page.End, Available: page.Available}
	for _, row := range page.Rows {
		result.Rows = append(result.Rows, gameAnalyticsRow(row, false))
	}
	if page.Summary != nil {
		result.Summary = gameAnalyticsRow(page.Summary, true)
	}
	return result, nil
}