cms-server/data/user.go

package data

import (
	"context"

	"github.com/go-viper/mapstructure/v2"
	"github.com/google/uuid"
	"github.com/meilisearch/meilisearch-go"
	"gorm.io/gorm"
)

type User struct {
	Id              uint      `json:"id" gorm:"primarykey;autoincrement"`
	UUID            uuid.UUID `json:"uuid" gorm:"type:uuid;uniqueindex;not null"`
	UserId          uuid.UUID `json:"user_id" gorm:"type:uuid;uniqueindex;not null"`
	Email           string    `json:"email" gorm:"type:varchar(255);uniqueindex;not null"`
	Username        string    `json:"username" gorm:"type:varchar(255);uniqueindex;not null"`
	Nickname        string    `json:"nickname" gorm:"type:text"`
	Subtitle        string    `json:"subtitle" gorm:"type:text"`
	Avatar          string    `json:"avatar" gorm:"type:text"`
	Bio             string    `json:"bio" gorm:"type:text"`
	PermissionLevel uint      `json:"permission_level" gorm:"default:10;not null"`
	AllowPublic     bool      `json:"allow_public" gorm:"default:false;not null"`
}

type UserSearchDoc struct {
	UserId   string `json:"user_id"`
	Email    string `json:"email"`
	Username string `json:"username"`
	Type     string `json:"type"`
	Nickname string `json:"nickname"`
	Subtitle string `json:"subtitle"`
	Avatar   string `json:"avatar"`
}

func (self *User) SetEmail(s string) *User {
	self.Email = s
	return self
}

func (self *User) SetUsername(s string) *User {
	self.Username = s
	return self
}

func (self *User) SetNickname(s string) *User {
	self.Nickname = s
	return self
}

func (self *User) SetSubtitle(s string) *User {
	self.Subtitle = s
	return self
}

func (self *User) SetAvatar(s string) *User {
	self.Avatar = s
	return self
}

func (self *User) SetBio(s string) *User {
	self.Bio = s
	return self
}

func (self *User) SetPermissionLevel(s uint) *User {
	self.PermissionLevel = s
	return self
}

func (self *User) SetAllowPublic(s bool) *User {
	self.AllowPublic = s
	return self
}

func (self *User) GetByEmail(ctx context.Context, email *string) (*User, error) {
	var user User

	err := Database.WithContext(ctx).
		Where("email = ?", email).
		First(&user).Error

	if err != nil {
		if err == gorm.ErrRecordNotFound {
			return nil, nil
		}
		return nil, err
	}

	return &user, nil
}

func (self *User) GetByUserId(ctx context.Context, userId *uuid.UUID) (*User, error) {
	var user User

	err := Database.WithContext(ctx).
		Where("user_id = ?", userId).
		First(&user).Error

	if err != nil {
		if err == gorm.ErrRecordNotFound {
			return nil, nil
		}
		return nil, err
	}

	return &user, err
}

func (self *User) Create(ctx context.Context) error {
	self.UUID = uuid.New()
	self.UserId = uuid.New()

	// DB transaction only
	if err := Database.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
		if err := tx.Create(self).Error; err != nil {
			return err
		}
		return nil
	}); err != nil {
		return err
	}

	// Search index (eventual consistency)
	if err := self.UpdateSearchIndex(&ctx); err != nil {
		// TODO: async retry / log
		return err
	}

	return nil
}

func (self *User) UpdateByUserID(ctx context.Context, userId *uuid.UUID) error {
	return Database.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
		if err := tx.Model(&User{}).Where("user_id = ?", userId).Updates(&self).Error; err != nil {
			return err
		}
		return nil
	})
}

func (self *User) GetFullTable(ctx context.Context) (*[]User, error) {
	var users []User
	err := Database.WithContext(ctx).Find(&users).Error
	if err != nil {
		return nil, err
	}
	return &users, nil
}

func (self *User) FastListUsers(ctx context.Context, limit, offset *int64) (*[]UserSearchDoc, error) {
	index := MeiliSearch.Index("user")

	// Fast read from MeiliSearch, no DB involved
	result, err := index.SearchWithContext(ctx, "", &meilisearch.SearchRequest{
		Limit:  *limit,
		Offset: *offset,
	})
	if err != nil {
		return nil, err
	}

	var list []UserSearchDoc
	if err := mapstructure.Decode(result.Hits, &list); err != nil {
		return nil, err
	}

	return &list, nil
}

func (self *User) UpdateSearchIndex(ctx *context.Context) error {
	doc := UserSearchDoc{
		UserId:   self.UserId.String(),
		Email:    self.Email,
		Username: self.Username,
		Nickname: self.Nickname,
		Subtitle: self.Subtitle,
		Avatar:   self.Avatar,
	}
	index := MeiliSearch.Index("user")

	primaryKey := "user_id"
	opts := &meilisearch.DocumentOptions{
		PrimaryKey: &primaryKey,
	}

	if _, err := index.UpdateDocumentsWithContext(
		*ctx,
		[]UserSearchDoc{doc},
		opts,
	); err != nil {
		return err
	}

	return nil
}

func (self *User) DeleteSearchIndex(ctx *context.Context) error {
	index := MeiliSearch.Index("user")
	_, err := index.DeleteDocumentWithContext(*ctx, self.UserId.String(), nil)
	return err
}