Move location registry modules to canonical namespace

internal/modules/dnd/extract/locationregistry/canonicalize.go

@@ -0,0 +1,86 @@
+package locationregistry
+
+import (
+	"sort"
+
+	"gitea.maximumdirect.net/eric/notarius/internal/core/source"
+	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd"
+	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/locations/identity"
+	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared"
+)
+
+type orderedLocationResponse struct {
+	value       locationResponse
+	earliest    int
+	hasEvidence bool
+}
+
+func canonicalizeResponse(response *extractionResponse, order shared.SourceRefOrder, sourceID string) {
+	if response == nil {
+		return
+	}
+	ordered := make([]orderedLocationResponse, len(response.Locations))
+	for index := range response.Locations {
+		earliest, hasEvidence := canonicalizeLocation(&response.Locations[index], order, sourceID)
+		ordered[index] = orderedLocationResponse{value: response.Locations[index], earliest: earliest, hasEvidence: hasEvidence}
+	}
+	sort.SliceStable(ordered, func(left, right int) bool {
+		if ordered[left].hasEvidence != ordered[right].hasEvidence {
+			return ordered[left].hasEvidence
+		}
+		if !ordered[left].hasEvidence {
+			return false
+		}
+		return ordered[left].earliest < ordered[right].earliest
+	})
+	for index := range ordered {
+		response.Locations[index] = ordered[index].value
+	}
+}
+
+func canonicalizeLocation(location *locationResponse, order shared.SourceRefOrder, sourceID string) (int, bool) {
+	if location == nil {
+		return 0, false
+	}
+	refs := order.Canonicalize(canonicalSourceRefs(location.SourceRefs, sourceID))
+	location.SourceRefs = locationResponseRefs(refs)
+	return order.EarliestValid(refs)
+}
+
+func canonicalLocationRegistry(response extractionResponse, sourceID string) dnd.LocationRegistry {
+	if response.Locations == nil {
+		return dnd.LocationRegistry{Locations: nil}
+	}
+	locations := make([]dnd.Location, len(response.Locations))
+	for index, location := range response.Locations {
+		refs := canonicalSourceRefs(location.SourceRefs, sourceID)
+		locations[index] = dnd.Location{
+			ID:         identity.DeriveID(location.Name, refs),
+			Name:       location.Name,
+			SourceRefs: refs,
+		}
+	}
+	return dnd.LocationRegistry{Locations: locations}
+}
+
+func canonicalSourceRefs(values []locationSourceRefResponse, sourceID string) []source.SourceRef {
+	if values == nil {
+		return nil
+	}
+	refs := make([]source.SourceRef, len(values))
+	for index, value := range values {
+		refs[index] = source.SourceRef{SourceID: sourceID, StartUnitID: value.StartUnitID, EndUnitID: value.EndUnitID}
+	}
+	return refs
+}
+
+func locationResponseRefs(values []source.SourceRef) []locationSourceRefResponse {
+	if values == nil {
+		return nil
+	}
+	refs := make([]locationSourceRefResponse, len(values))
+	for index, value := range values {
+		refs[index] = locationSourceRefResponse{StartUnitID: value.StartUnitID, EndUnitID: value.EndUnitID}
+	}
+	return refs
+}