package business

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

type LedgerUsecase interface {
	Registrations(context.Context, business.LedgerFilter, business.LedgerListOptions) (*business.RegistrationPage, error)
	Spends(context.Context, business.LedgerFilter, business.LedgerListOptions) (*business.SpendPage, error)
	ExportRegistrations(context.Context, business.LedgerFilter) ([]*business.Registration, error)
	ExportSpends(context.Context, business.LedgerFilter) ([]*business.Spend, error)
	Games(context.Context, []string, string, int) ([]*business.GameOption, error)
}
type LedgerService struct{ uc LedgerUsecase }

func NewLedgerService(uc *business.LedgerUsecase) *LedgerService { return &LedgerService{uc: uc} }
func ledgerRequest(req *dto.LedgerQuery, spend bool) (business.LedgerFilter, business.LedgerListOptions, error) {
	if req == nil {
		return business.LedgerFilter{}, business.LedgerListOptions{}, business.ErrLedgerInput
	}
	sources, err := normalizePlatforms(req.Sources)
	if err != nil {
		return business.LedgerFilter{}, business.LedgerListOptions{}, err
	}
	f := business.LedgerFilter{Sources: sources, GameNames: splitQueryValues(req.GameNames), UserID: req.UserID, PromoteAccount: strings.TrimSpace(req.PromoteAccount), BusierAccount: strings.TrimSpace(req.BusierAccount), PlayerName: strings.TrimSpace(req.PlayerName), OrderNumber: strings.TrimSpace(req.OrderNumber), PayStatus: req.PayStatus, PayWay: req.PayWay, SortField: strings.TrimSpace(req.SortField), Ascending: strings.EqualFold(strings.TrimSpace(req.SortOrder), "asc") || strings.EqualFold(strings.TrimSpace(req.SortOrder), "ascending")}
	begin, end := req.BeginRegisterTime, req.EndRegisterTime
	if spend {
		begin, end = req.BeginPayTime, req.EndPayTime
	}
	if (strings.TrimSpace(begin) == "") != (strings.TrimSpace(end) == "") {
		return f, business.LedgerListOptions{}, business.ErrLedgerInput
	}
	if strings.TrimSpace(begin) != "" && strings.TrimSpace(end) != "" {
		location := time.FixedZone("Asia/Shanghai", 8*3600)
		b, err := time.ParseInLocation("2006-01-02", strings.TrimSpace(begin), location)
		if err != nil {
			return f, business.LedgerListOptions{}, business.ErrLedgerInput
		}
		e, err := time.ParseInLocation("2006-01-02", strings.TrimSpace(end), location)
		if err != nil || e.Before(b) {
			return f, business.LedgerListOptions{}, business.ErrLedgerInput
		}
		f.StartDate = &b
		f.EndDate = &e
	}
	page, size := req.Page, req.PageSize
	if page < 1 {
		page = 1
	}
	if size < 1 {
		size = 10
	}
	if size > 500 {
		size = 500
	}
	if page > int(^uint(0)>>1)/size {
		return f, business.LedgerListOptions{}, business.ErrLedgerInput
	}
	return f, business.LedgerListOptions{Offset: (page - 1) * size, Limit: size}, nil
}
func registrationResponse(r *business.Registration) *dto.RegistrationResponse {
	return &dto.RegistrationResponse{SourceDB: r.SourceDB, SourceDBLabel: business.PlatformName(r.SourceDB), ID: r.ID, UserID: r.ID, RegisterTime: r.RegisterTime, FirstGameID: r.FirstGameID, FirstGameName: r.FirstGameName, TotalPayAmount: r.TotalPayAmount, RegisterIP: r.RegisterIP, DeviceName: r.DeviceName, PromoteID: r.PromoteID, PromoteAccount: r.PromoteAccount, BusierName: r.DisplayBusiness()}
}
func spendResponse(r *business.Spend) *dto.SpendResponse {
	return &dto.SpendResponse{SourceDB: r.SourceDB, SourceDBLabel: business.PlatformName(r.SourceDB), ID: r.ID, UserID: r.UserID, OrderNumber: r.OrderNumber, GameID: r.GameID, GameName: r.GameName, ServerID: r.ServerID, ServerName: r.ServerName, PlayerName: r.PlayerName, PayAmount: r.PayAmount, PayTime: r.PayTime, PayWay: r.PayWay, PayStatus: r.PayStatus, IP: r.IP, PromoteID: r.PromoteID, PromoteAccount: r.PromoteAccount, BusierName: r.DisplayBusiness()}
}
func (s *LedgerService) Registrations(ctx context.Context, req *dto.LedgerQuery) (*dto.RegistrationPage, error) {
	f, o, err := ledgerRequest(req, false)
	if err != nil {
		return nil, err
	}
	page, err := s.uc.Registrations(ctx, f, o)
	if err != nil {
		return nil, err
	}
	out := &dto.RegistrationPage{Rows: []*dto.RegistrationResponse{}, Total: page.Total, Available: page.Available}
	for _, row := range page.Rows {
		out.Rows = append(out.Rows, registrationResponse(row))
	}
	return out, nil
}
func (s *LedgerService) Spends(ctx context.Context, req *dto.LedgerQuery) (*dto.SpendPage, error) {
	f, o, err := ledgerRequest(req, true)
	if err != nil {
		return nil, err
	}
	page, err := s.uc.Spends(ctx, f, o)
	if err != nil {
		return nil, err
	}
	out := &dto.SpendPage{Rows: []*dto.SpendResponse{}, Total: page.Total, TotalPayAmount: page.TotalPayAmount, Available: page.Available}
	for _, row := range page.Rows {
		out.Rows = append(out.Rows, spendResponse(row))
	}
	return out, nil
}
func (s *LedgerService) Games(ctx context.Context, req *dto.GameOptionQuery) ([]*dto.GameOptionResponse, error) {
	if req == nil {
		return nil, business.ErrLedgerInput
	}
	sources, err := normalizePlatforms(req.Sources)
	if err != nil {
		return nil, err
	}
	rows, err := s.uc.Games(ctx, sources, req.Keyword, req.Limit)
	if err != nil {
		return nil, err
	}
	result := make([]*dto.GameOptionResponse, 0, len(rows))
	for _, row := range rows {
		result = append(result, &dto.GameOptionResponse{SourceDB: row.SourceDB, SourceDBLabel: business.PlatformName(row.SourceDB), GameID: row.ID, GameName: row.Name})
	}
	return result, nil
}