feat: self-service user signup (#672)

Co-authored-by: Elias Schneider <login@eliasschneider.com>

backend/internal/dto/app_config_dto.go

@@ -17,6 +17,7 @@ type AppConfigUpdateDto struct {
 	EmailsVerified                             string `json:"emailsVerified" binding:"required"`
 	DisableAnimations                          string `json:"disableAnimations" binding:"required"`
 	AllowOwnAccountEdit                        string `json:"allowOwnAccountEdit" binding:"required"`
+	AllowUserSignups                           string `json:"allowUserSignups" binding:"required,oneof=disabled withToken open"`
 	AccentColor                                string `json:"accentColor"`
 	SmtpHost                                   string `json:"smtpHost"`
 	SmtpPort                                   string `json:"smtpPort"`

backend/internal/dto/signup_token_dto.go

@@ -0,0 +1,21 @@
+package dto
+
+import (
+	"time"
+
+	datatype "github.com/pocket-id/pocket-id/backend/internal/model/types"
+)
+
+type SignupTokenCreateDto struct {
+	ExpiresAt  time.Time `json:"expiresAt" binding:"required"`
+	UsageLimit int       `json:"usageLimit" binding:"required,min=1,max=100"`
+}
+
+type SignupTokenDto struct {
+	ID         string            `json:"id"`
+	Token      string            `json:"token"`
+	ExpiresAt  datatype.DateTime `json:"expiresAt"`
+	UsageLimit int               `json:"usageLimit"`
+	UsageCount int               `json:"usageCount"`
+	CreatedAt  datatype.DateTime `json:"createdAt"`
+}

backend/internal/dto/user_dto.go

@@ -44,3 +44,11 @@ type OneTimeAccessEmailAsAdminDto struct {
 type UserUpdateUserGroupDto struct {
 	UserGroupIds []string `json:"userGroupIds" binding:"required"`
 }
+
+type SignUpDto struct {
+	Username  string `json:"username" binding:"required,username,min=2,max=50"`
+	Email     string `json:"email" binding:"required,email"`
+	FirstName string `json:"firstName" binding:"required,min=1,max=50"`
+	LastName  string `json:"lastName" binding:"max=50"`
+	Token     string `json:"token"`
+}