package apple

import (
	"context"
	"time"

	iapmodel "github.com/perfect-panel/server/internal/model/iap/apple"
	"github.com/perfect-panel/server/internal/svc"
	"github.com/perfect-panel/server/internal/types"
	"github.com/perfect-panel/server/pkg/logger"
	"github.com/perfect-panel/server/pkg/xerr"
	iapapple "github.com/perfect-panel/server/pkg/iap/apple"
	"github.com/perfect-panel/server/pkg/constant"
	"github.com/pkg/errors"
)

type GetStatusLogic struct {
	logger.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

func NewGetStatusLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetStatusLogic {
	return &GetStatusLogic{
		Logger: logger.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *GetStatusLogic) GetStatus() (*types.GetAppleStatusResponse, error) {
	u, ok := l.ctx.Value(constant.CtxKeyUser).(*struct{ Id int64 })
	if !ok || u == nil {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.InvalidAccess), "invalid access")
	}
	pm, _ := iapapple.ParseProductMap(l.svcCtx.Config.Site.CustomData)
	var latest *iapmodel.Transaction
	var err error
	for pid := range pm.Items {
		item, e := iapmodel.NewModel(l.svcCtx.DB, l.svcCtx.Redis).FindByUserAndProduct(l.ctx, u.Id, pid)
		if e == nil && item != nil && item.Id != 0 {
			if latest == nil || item.PurchaseAt.After(latest.PurchaseAt) {
				latest = item
			}
		}
	}
	if latest == nil {
		return &types.GetAppleStatusResponse{
			Active:    false,
			ExpiresAt: 0,
			Tier:      "",
		}, nil
	}
	m := pm.Items[latest.ProductId]
	exp := iapapple.CalcExpire(latest.PurchaseAt, m.DurationDays).Unix()
	active := latest.RevocationAt == nil && (exp == 0 || exp > time.Now().Unix())
	return &types.GetAppleStatusResponse{
		Active:    active,
		ExpiresAt: exp,
		Tier:      m.Tier,
	}, err
}