feat: currency selection support (#72)

* initial UI for currency selection

* add task to purge invitation tokens

* group API contracts

* fix type import

* use auth middleware

* add currency setting support (UI)

* use group settings for format currency

* fix casing

backend/ent/group/group.go

@@ -121,6 +121,9 @@ const DefaultCurrency = CurrencyUsd
 // Currency values.
 const (
 	CurrencyUsd Currency = "usd"
+	CurrencyEur Currency = "eur"
+	CurrencyGbp Currency = "gbp"
+	CurrencyJpy Currency = "jpy"
 )
 
 func (c Currency) String() string {
@@ -130,7 +133,7 @@ func (c Currency) String() string {
 // CurrencyValidator is a validator for the "currency" field enum values. It is called by the builders before save.
 func CurrencyValidator(c Currency) error {
 	switch c {
-	case CurrencyUsd:
+	case CurrencyUsd, CurrencyEur, CurrencyGbp, CurrencyJpy:
 		return nil
 	default:
 		return fmt.Errorf("group: invalid enum value for currency field: %q", c)

backend/ent/migrate/schema.go

@@ -127,7 +127,7 @@ var (
 		{Name: "created_at", Type: field.TypeTime},
 		{Name: "updated_at", Type: field.TypeTime},
 		{Name: "name", Type: field.TypeString, Size: 255},
-		{Name: "currency", Type: field.TypeEnum, Enums: []string{"usd"}, Default: "usd"},
+		{Name: "currency", Type: field.TypeEnum, Enums: []string{"usd", "eur", "gbp", "jpy"}, Default: "usd"},
 	}
 	// GroupsTable holds the schema information for the "groups" table.
 	GroupsTable = &schema.Table{

backend/ent/schema/group.go

@@ -27,7 +27,7 @@ func (Group) Fields() []ent.Field {
 			NotEmpty(),
 		field.Enum("currency").
 			Default("usd").
-			Values("usd"), // TODO: add more currencies
+			Values("usd", "eur", "gbp", "jpy"), // TODO: add more currencies
 	}
 }