// Package logic is the admin application layer (popadmin ops over V3 data).
package logic

import (
	"context"
	"errors"
	"time"

	adminentity "spark-server/internal/module/admin/entity"
	adminmodel "spark-server/internal/module/admin/model"
	friendentity "spark-server/internal/module/friend/entity"
	grouplogic "spark-server/internal/module/group/logic"
	userentity "spark-server/internal/module/user/entity"
)

var ErrNotReady = errors.New("admin: repository not ready")

// Service orchestrates admin use-cases. SQL lives in model.Repo.
type UserDisabler interface {
	DisableAccount(ctx context.Context, userID int64) error
}

type Service struct {
	repo     Repository
	groups   *grouplogic.Service
	ids      IDGen
	disabler UserDisabler
}

type IDGen interface {
	NextID() (int64, error)
}

// Repository is admin read/write over V3 tables. Model implements it.
type Repository interface {
	ListUsers(ctx context.Context, emailLike string, page, size int) ([]adminmodel.UserRow, int64, error)
	UsersByEmail(ctx context.Context, email string) ([]adminmodel.UserRow, error)
	UserByID(ctx context.Context, id int64) (*adminmodel.UserRow, error)
	UsersByNickname(ctx context.Context, nickname string) ([]adminmodel.UserRow, error)
	UsersByDevice(ctx context.Context, deviceID string, deviceIDNum uint64) ([]adminmodel.UserRow, error)
	UsersByIP(ctx context.Context, ip string) ([]adminmodel.UserRow, error)
	SetUserStatusByEmail(ctx context.Context, email string, status userentity.Status) error
	SetNicknameByEmail(ctx context.Context, email, nickname string) error
	ClearAvatarByEmail(ctx context.Context, email string) error
	SameIPRank(ctx context.Context, limit int) ([]adminmodel.SameIPRankRow, error)
	LookupUserIDByEmail(ctx context.Context, email string) (int64, error)
	ListGroups(ctx context.Context, q string) ([]adminmodel.GroupRow, error)
	GroupByID(ctx context.Context, groupID int64) (*adminmodel.GroupRow, error)
	ActiveGroupOwner(ctx context.Context, groupID int64) (int64, error)
	ListGroupMembers(ctx context.Context, groupID int64) ([]adminmodel.GroupMemberRow, error)
	ListGroupMessages(ctx context.Context, groupID int64, limit int) ([]adminmodel.MessageRow, error)
	ListComplaints(ctx context.Context, limit int) ([]adminmodel.ComplaintRow, error)
	InsertComplaint(ctx context.Context, r *friendentity.Report) error
	ImStats(ctx context.Context) (*adminentity.ImStats, error)
	ListRecentMessages(ctx context.Context, fetchLimit int, from, to *time.Time) ([]adminmodel.MessageRow, error)
	ListUserConversations(ctx context.Context, userID int64) ([]adminmodel.ConversationRow, error)
}

func NewService(repo Repository, groups *grouplogic.Service, ids IDGen) *Service {
	return &Service{repo: repo, groups: groups, ids: ids}
}

func (s *Service) BindUserDisabler(d UserDisabler) {
	if s == nil {
		return
	}
	s.disabler = d
}

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