Ilia Denisov
66 lines
1.7 KiB
Go
66 lines
1.7 KiB
Go
// Package template defines the logical template entity used by the
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// filesystem-backed Mail Service template catalog.
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package template
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import (
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"fmt"
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"strings"
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"galaxy/mail/internal/domain/common"
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)
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// Template stores one locale-specific template bundle.
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type Template struct {
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// TemplateID identifies the template family.
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TemplateID common.TemplateID
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// Locale stores the canonical locale of the template variant.
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Locale common.Locale
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// SubjectTemplate stores the subject template source.
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SubjectTemplate string
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// TextTemplate stores the plaintext body template source.
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TextTemplate string
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// HTMLTemplate stores the optional HTML body template source.
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HTMLTemplate string
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// Version stores the template version marker projected into the domain
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// model.
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Version string
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}
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// Validate reports whether Template satisfies the frozen Stage 2 structural
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// invariants.
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func (record Template) Validate() error {
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if err := record.TemplateID.Validate(); err != nil {
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return fmt.Errorf("template id: %w", err)
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}
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if err := record.Locale.Validate(); err != nil {
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return fmt.Errorf("template locale: %w", err)
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}
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if record.SubjectTemplate == "" {
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return fmt.Errorf("template subject template must not be empty")
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}
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if record.TextTemplate == "" {
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return fmt.Errorf("template text template must not be empty")
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}
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if err := validateToken("template version", record.Version); err != nil {
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return err
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}
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return nil
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}
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func validateToken(name string, value string) error {
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switch {
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case strings.TrimSpace(value) == "":
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return fmt.Errorf("%s must not be empty", name)
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case strings.TrimSpace(value) != value:
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return fmt.Errorf("%s must not contain surrounding whitespace", name)
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default:
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return nil
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}
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}
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