// Package logic is the user application use-case layer, split by function (profile, login, email code).
package logic

import (
	"context"
	"time"

	smsentity "spark-server/internal/module/sms/entity"
	"spark-server/internal/module/user/entity"
)

// Repository is user persistence. Model implements it; do not split this by table.
type Repository interface {
	GetByID(ctx context.Context, id int64) (*entity.User, error)
	GetByEmail(ctx context.Context, email string) (*entity.User, error)
	GetBySparkID(ctx context.Context, sparkID string) (*entity.User, error)
	GetByQRCode(ctx context.Context, qrcode string) (*entity.User, error)
	CreateWithEmail(ctx context.Context, u *entity.User, email string) error
	UpdateSparkID(ctx context.Context, userID int64, sparkID string) error
	UpdateQRCode(ctx context.Context, userID int64, qrcode string) error
	UpdateProfile(ctx context.Context, u *entity.User) error
	TouchLogin(ctx context.Context, userID int64, at time.Time) error
	UpsertDevice(ctx context.Context, d *entity.UserDeviceLink) error
	GetDevice(ctx context.Context, userID int64, deviceID uint64) (*entity.UserDeviceLink, error)
	TouchDeviceActive(ctx context.Context, userID int64, deviceID uint64, at time.Time) error
	InsertLoginLog(ctx context.Context, log *entity.LoginLog) error
	GetEmail(ctx context.Context, userID int64) (string, error)
	GetDeleted(ctx context.Context, id int64) (*entity.Deleted, error)
	ArchiveAndDelete(ctx context.Context, d *entity.Deleted) error
}

// IDGen issues time-ordered Snowflake IDs (user PK).
type IDGen interface {
	NextID() (int64, error)
}

// Objects stores the generated default avatar. Nil or Put error keeps an SVG data-URI fallback.
type Objects interface {
	Put(ctx context.Context, key string, body []byte, contentType string) error
}

// OTP checks and clears verification codes issued by the sms module.
type OTP interface {
	CheckAndConsume(ctx context.Context, ch smsentity.Channel, purpose smsentity.Purpose, target, code string) error
	ClearTarget(ctx context.Context, ch smsentity.Channel, target string)
}

// Service is the user application use-case (HTTP and TCP share it).
type Service struct {
	repo     Repository
	otp      OTP
	ids      IDGen
	objects  Objects
	tokens   TokenRevoker
	sessions SessionDropper
	cleaners []UserDataCleaner
}

func NewService(repo Repository, otp OTP, ids IDGen, objects Objects) *Service {
	return &Service{repo: repo, otp: otp, ids: ids, objects: objects}
}

func (s *Service) ready() bool {
	return s != nil && s.repo != nil && s.ids != nil
}