{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "urn:animsmith:schema:skeleton-compatibility:1",
  "title": "AnimSmith skeleton compatibility V1",
  "type": "object",
  "additionalProperties": false,
  "required": ["schema_version", "schema", "tool", "command", "outcome", "correspondence", "source", "target", "rows", "facets"],
  "properties": {
    "schema_version": {"const": 1},
    "schema": {"const": "urn:animsmith:schema:skeleton-compatibility:1"},
    "tool": {"type": "object"},
    "command": {"const": "skeleton compare"},
    "outcome": {"enum": ["compatible", "incompatible", "partial", "not_evaluated"]},
    "correspondence": {"$ref": "#/$defs/correspondence"},
    "source": {"$ref": "#/$defs/subject"},
    "target": {"$ref": "#/$defs/subject"},
    "rows": {"type": "array", "items": {"$ref": "#/$defs/row"}},
    "facets": {"$ref": "#/$defs/facets"}
  },
  "$defs": {
    "identity": {
      "type": "object",
      "additionalProperties": false,
      "required": ["sha256", "bytes"],
      "properties": {"sha256": {"type": "string", "pattern": "^[0-9a-f]{64}$"}, "bytes": {"type": "integer", "minimum": 0}}
    },
    "state": {"enum": ["pass", "mismatch", "unavailable"]},
    "delta": {
      "type": "object",
      "additionalProperties": false,
      "required": ["tolerance", "state"],
      "properties": {"value": {"type": "number"}, "tolerance": {"type": "number", "minimum": 0}, "state": {"$ref": "#/$defs/state"}}
    },
    "rest_deltas": {
      "type": "object",
      "additionalProperties": false,
      "required": ["translation_m", "rotation_deg", "scale_delta"],
      "properties": {"translation_m": {"$ref": "#/$defs/delta"}, "rotation_deg": {"$ref": "#/$defs/delta"}, "scale_delta": {"$ref": "#/$defs/delta"}}
    },
    "correspondence": {
      "type": "object",
      "additionalProperties": false,
      "required": ["schema", "schema_version", "input", "matching_mode", "mapping", "tolerances"],
      "allOf": [
        {"if": {"properties": {"matching_mode": {"const": "exact_name"}}}, "then": {"properties": {"mapping": {"maxProperties": 0}}}},
        {"if": {"properties": {"matching_mode": {"const": "explicit"}}}, "then": {"properties": {"mapping": {"minProperties": 1}}}}
      ],
      "properties": {
        "schema": {"const": "urn:animsmith:skeleton-correspondence:1"},
        "schema_version": {"const": 1},
        "input": {"$ref": "#/$defs/identity"},
        "matching_mode": {"enum": ["exact_name", "explicit"]},
        "mapping": {"type": "object", "additionalProperties": {"type": "string", "minLength": 1}},
        "tolerances": {"$ref": "#/$defs/tolerances"}
      }
    },
    "tolerances": {
      "type": "object",
      "additionalProperties": false,
      "required": ["translation_m", "rotation_deg", "scale_delta", "normalized_bone_length_ratio_delta"],
      "properties": {
        "translation_m": {"type": "number", "minimum": 0},
        "rotation_deg": {"type": "number", "minimum": 0},
        "scale_delta": {"type": "number", "minimum": 0},
        "normalized_bone_length_ratio_delta": {"type": "number", "minimum": 0}
      }
    },
    "subject": {
      "type": "object",
      "additionalProperties": false,
        "required": ["input", "selected_skeleton_identity", "dependency_closure_complete", "selector", "normalized_units_basis"],
        "properties": {
          "input": {"$ref": "#/$defs/identity"},
          "selected_skeleton_identity": {"$ref": "#/$defs/identity"},
        "dependency_closure_identity": {"$ref": "#/$defs/identity"},
        "dependency_closure_complete": {"type": "boolean"},
        "selector": {"type": "object", "additionalProperties": false, "required": ["root_name", "node_names"], "properties": {"root_name": {"type": "string", "minLength": 1}, "node_names": {"type": "array", "minItems": 1, "uniqueItems": true, "items": {"type": "string", "minLength": 1}}}},
        "normalized_units_basis": {"type": "object", "additionalProperties": false, "required": ["translation", "rotation"], "properties": {"translation": {"const": "metres"}, "rotation": {"const": "right-handed normalized coordinates"}}}
      }
    },
    "row": {
      "oneOf": [
        {"$ref": "#/$defs/matched_row"},
        {"$ref": "#/$defs/parent_mismatch_row"},
        {"$ref": "#/$defs/missing_target_row"},
        {"$ref": "#/$defs/missing_source_row"}
      ]
    },
    "owner_surface": {"enum": ["correspondence", "selected_skeleton_authority", "selected_skin_bind_evidence", "measurement_boundary"]},
    "remedy_class": {"enum": ["rename_or_remap", "align_hierarchy", "align_rest_pose", "supply_skin_bind_evidence", "unavailable_evidence"]},
    "matched_row": {"type": "object", "additionalProperties": false, "required": ["kind", "source_name", "target_name", "parent_correspondence", "local_rest", "rest_world"], "dependentRequired": {"owner_surface": ["remedy_class"], "remedy_class": ["owner_surface"]}, "properties": {"kind": {"const": "matched"}, "source_name": {"type": "string"}, "target_name": {"type": "string"}, "parent_correspondence": {"const": "pass"}, "local_rest": {"$ref": "#/$defs/rest_deltas"}, "rest_world": {"$ref": "#/$defs/rest_deltas"}, "normalized_child_bone_length_ratio": {"$ref": "#/$defs/delta"}, "owner_surface": {"$ref": "#/$defs/owner_surface"}, "remedy_class": {"$ref": "#/$defs/remedy_class"}}},
    "parent_mismatch_row": {"type": "object", "additionalProperties": false, "required": ["kind", "source_name", "target_name", "parent_correspondence", "local_rest", "rest_world", "owner_surface", "remedy_class"], "properties": {"kind": {"const": "parent_mismatch"}, "source_name": {"type": "string"}, "target_name": {"type": "string"}, "parent_correspondence": {"const": "mismatch"}, "local_rest": {"$ref": "#/$defs/rest_deltas"}, "rest_world": {"$ref": "#/$defs/rest_deltas"}, "normalized_child_bone_length_ratio": {"$ref": "#/$defs/delta"}, "owner_surface": {"const": "selected_skeleton_authority"}, "remedy_class": {"const": "align_hierarchy"}}},
    "missing_target_row": {"type": "object", "additionalProperties": false, "required": ["kind", "source_name", "owner_surface", "remedy_class"], "properties": {"kind": {"const": "missing_target"}, "source_name": {"type": "string"}, "owner_surface": {"const": "correspondence"}, "remedy_class": {"const": "rename_or_remap"}}},
    "missing_source_row": {"type": "object", "additionalProperties": false, "required": ["kind", "target_name", "owner_surface", "remedy_class"], "properties": {"kind": {"const": "missing_source"}, "target_name": {"type": "string"}, "owner_surface": {"const": "correspondence"}, "remedy_class": {"const": "rename_or_remap"}}},
    "facet_summary": {"type": "object", "additionalProperties": false, "required": ["required", "state"], "properties": {"required": {"type": "boolean"}, "state": {"$ref": "#/$defs/state"}}},
    "evidence_side": {"oneOf": [
      {"type": "object", "additionalProperties": false, "required": ["state", "detail"], "properties": {"state": {"const": "pass"}, "detail": {"type": "string"}}},
      {"type": "object", "additionalProperties": false, "required": ["state", "detail", "owner_surface", "remedy_class"], "properties": {"state": {"const": "unavailable"}, "detail": {"type": "string"}, "owner_surface": {"$ref": "#/$defs/owner_surface"}, "remedy_class": {"$ref": "#/$defs/remedy_class"}}}
    ]},
    "evidence": {"type": "object", "additionalProperties": false, "required": ["required", "state", "source", "target"], "properties": {"required": {"const": false}, "state": {"$ref": "#/$defs/state"}, "source": {"$ref": "#/$defs/evidence_side"}, "target": {"$ref": "#/$defs/evidence_side"}}},
    "facets": {
      "type": "object",
      "additionalProperties": false,
      "required": ["topology_rest", "skin_membership", "inverse_bind", "deformation_model"],
      "properties": {"topology_rest": {"$ref": "#/$defs/facet_summary"}, "skin_membership": {"$ref": "#/$defs/evidence"}, "inverse_bind": {"$ref": "#/$defs/evidence"}, "deformation_model": {"$ref": "#/$defs/evidence"}}
    }
  }
}