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

internal/block/text_component/text_component.go

@@ -0,0 +1,85 @@
+package text_component
+
+import (
+	"blocky/internal/block"
+	"blocky/internal/block/validation"
+	"encoding/json"
+	"fmt"
+)
+
+type TextComponent struct {
+	identifier     string
+	name           string
+	validators     []validation.Validator
+	TextValidators []TextValidator
+}
+
+func (t TextComponent) Type() block.ComponentType {
+	return block.TextComponentType
+}
+
+func (t TextComponent) Name() string {
+	return t.name
+}
+
+func (t TextComponent) Identifier() string {
+	return t.identifier
+}
+
+func (t TextComponent) Validators() []validation.Validator {
+	return t.validators
+}
+
+func NewTextComponent(identifier, name string, validators []validation.ComponentOption, textValidators []TextComponentOption) TextComponent {
+	cfg := &validation.ComponentConfig{}
+	for _, opt := range validators {
+		opt(cfg)
+	}
+
+	textCfg := &TextComponentConfig{}
+	for _, opt := range textValidators {
+		opt(textCfg)
+	}
+
+	return TextComponent{identifier: identifier, name: name, validators: cfg.Validators, TextValidators: textCfg.Validators}
+}
+
+func (t TextComponent) NewInstance() block.ComponentInstance {
+	return &TextComponentInstance{}
+}
+
+type TextComponentInstance struct {
+	value string
+}
+
+func (t *TextComponentInstance) FromJSON(component block.Component, data json.RawMessage) error {
+	var s string
+	err := json.Unmarshal(data, &s)
+	if err != nil {
+		return err
+	}
+	t.value = s
+
+	for _, v := range component.Validators() {
+		if err := v(s); err != nil {
+			return fmt.Errorf("%s: %w", component.Identifier(), err)
+		}
+	}
+
+	if tc, ok := component.(TextComponent); ok {
+		for _, v := range tc.TextValidators {
+			if err := v(s); err != nil {
+				return fmt.Errorf("%s: %w", component.Identifier(), err)
+			}
+		}
+	}
+
+	return nil
+}
+
+type TextValidator func(value any) error
+type TextComponentConfig struct {
+	Validators []TextValidator
+}
+
+type TextComponentOption func(*TextComponentConfig)