add Block + Component, add TextComponent with min, max and regex validators and early NumberComponent

internal/block/number_component.go

@@ -0,0 +1,54 @@
+package block
+
+import (
+	"blocky/internal/block/validation"
+	"encoding/json"
+)
+
+type NumberComponent struct {
+	identifier string
+	name       string
+	validators []validation.Validator
+}
+
+func (t NumberComponent) Type() ComponentType {
+	return NumberComponentType
+}
+
+func (t NumberComponent) Name() string {
+	return t.name
+}
+
+func (t NumberComponent) Identifier() string {
+	return t.identifier
+}
+
+func (t NumberComponent) Validators() []validation.Validator {
+	return t.validators
+}
+
+func NewNumberComponent(identifier, name string, opts ...validation.ComponentOption) NumberComponent {
+	cfg := &validation.ComponentConfig{}
+	for _, opt := range opts {
+		opt(cfg)
+	}
+	return NumberComponent{identifier: identifier, name: name, validators: cfg.Validators}
+}
+
+func (t NumberComponent) NewInstance() ComponentInstance {
+	return &NumberComponentInstance{}
+}
+
+type NumberComponentInstance struct {
+	value int64
+}
+
+func (t *NumberComponentInstance) FromJSON(component Component, data json.RawMessage) error {
+	var s int64
+	err := json.Unmarshal(data, &s)
+	if err != nil {
+		return err
+	}
+	t.value = s
+	return nil
+}