package userimpl

import (
	"context"
	"errors"
	"time"

	"github.com/grafana/grafana/pkg/models"
	"github.com/grafana/grafana/pkg/services/org"
	"github.com/grafana/grafana/pkg/services/sqlstore/db"
	"github.com/grafana/grafana/pkg/services/user"
	"github.com/grafana/grafana/pkg/setting"
	"github.com/grafana/grafana/pkg/util"
)

type Service struct {
	store      store
	orgService org.Service
}

func ProvideService(db db.DB, orgService org.Service) user.Service {
	return &Service{
		store: &sqlStore{
			db: db,
		},
		orgService: orgService,
	}
}

func (s *Service) Create(ctx context.Context, cmd *user.CreateUserCommand) (*user.User, error) {
	cmdOrg := org.GetOrgIDForNewUserCommand{
		Email:        cmd.Email,
		Login:        cmd.Login,
		OrgID:        cmd.OrgID,
		OrgName:      cmd.OrgName,
		SkipOrgSetup: cmd.SkipOrgSetup,
	}
	orgID, err := s.orgService.GetIDForNewUser(ctx, cmdOrg)
	cmd.OrgID = orgID
	if err != nil {
		return nil, err
	}

	if cmd.Email == "" {
		cmd.Email = cmd.Login
	}
	usr := &user.User{
		Login: cmd.Login,
		Email: cmd.Email,
	}
	usr, err = s.store.Get(ctx, usr)
	if err != nil && !errors.Is(err, models.ErrUserNotFound) {
		return usr, err
	}

	// create user
	usr = &user.User{
		Email:            cmd.Email,
		Name:             cmd.Name,
		Login:            cmd.Login,
		Company:          cmd.Company,
		IsAdmin:          cmd.IsAdmin,
		IsDisabled:       cmd.IsDisabled,
		OrgID:            cmd.OrgID,
		EmailVerified:    cmd.EmailVerified,
		Created:          time.Now(),
		Updated:          time.Now(),
		LastSeenAt:       time.Now().AddDate(-10, 0, 0),
		IsServiceAccount: cmd.IsServiceAccount,
	}

	salt, err := util.GetRandomString(10)
	if err != nil {
		return nil, err
	}
	usr.Salt = salt
	rands, err := util.GetRandomString(10)
	if err != nil {
		return nil, err
	}
	usr.Rands = rands

	if len(cmd.Password) > 0 {
		encodedPassword, err := util.EncodePassword(cmd.Password, usr.Salt)
		if err != nil {
			return nil, err
		}
		usr.Password = encodedPassword
	}

	_, err = s.store.Insert(ctx, usr)
	if err != nil {
		return nil, err
	}

	// create org user link
	if !cmd.SkipOrgSetup {
		orgUser := org.OrgUser{
			OrgID:   orgID,
			UserID:  usr.ID,
			Role:    org.ROLE_ADMIN,
			Created: time.Now(),
			Updated: time.Now(),
		}

		if setting.AutoAssignOrg && !usr.IsAdmin {
			if len(cmd.DefaultOrgRole) > 0 {
				orgUser.Role = org.RoleType(cmd.DefaultOrgRole)
			} else {
				orgUser.Role = org.RoleType(setting.AutoAssignOrgRole)
			}
		}
		_, err = s.orgService.InsertUser(ctx, &orgUser)
		if err != nil {
			//  HERE ADD DELETE USER
			return usr, err
		}
	}

	return usr, nil
}