Add reconciliation state foundation

internal/state/validate.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 
 	"gitea.maximumdirect.net/eric/distributor/internal/bundle"
+	"gitea.maximumdirect.net/eric/distributor/internal/config"
 	"gitea.maximumdirect.net/eric/distributor/internal/link"
 	"gitea.maximumdirect.net/eric/distributor/internal/storage"
 )
@@ -26,6 +27,18 @@ func Validate(s DistributorState) error {
 	if s.PublishedAt.IsZero() {
 		return fmt.Errorf("state published_at is required")
 	}
+	if s.CreatedAt.IsZero() {
+		return fmt.Errorf("state created_at is required")
+	}
+	if s.UpdatedAt.IsZero() {
+		return fmt.Errorf("state updated_at is required")
+	}
+	if s.State.Mode != StateModeSingleOwner {
+		return fmt.Errorf("state state.mode must be %s", StateModeSingleOwner)
+	}
+	if s.Reconciliation.Mode != config.ReconciliationModeReplace && s.Reconciliation.Mode != config.ReconciliationModeMerge {
+		return fmt.Errorf("state reconciliation.mode must be %s or %s", config.ReconciliationModeReplace, config.ReconciliationModeMerge)
+	}
 	if err := validateEmbeddedManifest(s.Source.Manifest); err != nil {
 		return fmt.Errorf("state source.manifest: %w", err)
 	}
@@ -80,5 +93,11 @@ func validateOutput(index int, output OutputFile) error {
 	if output.Size < 0 {
 		return fmt.Errorf("state outputs[%d].size must be non-negative", index)
 	}
+	if output.CreatedAt.IsZero() {
+		return fmt.Errorf("state outputs[%d].created_at is required", index)
+	}
+	if output.UpdatedAt.IsZero() {
+		return fmt.Errorf("state outputs[%d].updated_at is required", index)
+	}
 	return nil
 }