{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://melodicbloom.dev/schemas/shader-evidence-receipt.schema.json",
  "title": "Shader Evidence Receipt",
  "type": "object",
  "additionalProperties": false,
  "required": ["id", "version", "receiptType", "status", "evidenceClass", "provenance", "authority", "shader", "apparatus", "outputs", "unknowns"],
  "properties": {
    "id": {"type": "string", "pattern": "^receipt:shader:[A-Za-z0-9._:/-]+$"},
    "version": {"type": "string", "pattern": "^[0-9]+\\.[0-9]+\\.[0-9]+$"},
    "receiptType": {"type": "string", "enum": ["identity", "schema", "toolchain", "compile", "link", "render", "capture", "control", "replay", "performance", "mobile", "integration", "gate"]},
    "status": {"type": "string", "enum": ["pass", "fail", "blocked", "unknown", "pending-review"]},
    "evidenceClass": {"type": "string", "enum": ["EXACT_MATH", "DERIVED_MATH", "PHYSICAL_MODEL", "EMPIRICAL", "HYPOTHESIS"]},
    "provenance": {
      "type": "object",
      "additionalProperties": false,
      "required": ["contentHash", "observedAt", "actor", "sourceFiles", "toolVersions"],
      "properties": {
        "contentHash": {"type": "string", "pattern": "^sha256:[a-f0-9]{64}$"},
        "observedAt": {"type": "string", "format": "date-time"},
        "actor": {"type": "string", "minLength": 1},
        "sourceFiles": {"type": "array", "items": {"type": "string"}, "minItems": 1, "uniqueItems": true},
        "toolVersions": {"type": "array", "items": {"type": "string"}, "minItems": 1, "uniqueItems": true}
      }
    },
    "authority": {
      "type": "object",
      "additionalProperties": false,
      "required": ["repository", "ref", "sha", "workingTree"],
      "properties": {
        "repository": {"const": "MelodicBloom/shader-gallery"},
        "ref": {"type": "string", "minLength": 1},
        "sha": {"type": "string", "pattern": "^[a-f0-9]{7,40}$"},
        "workingTree": {"type": "string", "enum": ["clean", "dirty", "unknown"]}
      }
    },
    "shader": {
      "type": "object",
      "additionalProperties": false,
      "required": ["shaderId", "sourceHash", "runtimeHash", "metadataHash"],
      "properties": {
        "shaderId": {"type": "string", "minLength": 1},
        "canonicalRole": {"type": "string"},
        "sourceHash": {"type": "string", "pattern": "^sha256:[a-f0-9]{64}$"},
        "runtimeHash": {"type": "string", "pattern": "^sha256:[a-f0-9]{64}$"},
        "metadataHash": {"type": "string", "pattern": "^sha256:[a-f0-9]{64}$"}
      }
    },
    "apparatus": {
      "type": "object",
      "additionalProperties": false,
      "required": ["renderer", "geometry", "emitter", "receiver", "observer", "material", "presentation"],
      "properties": {
        "renderer": {"type": "string", "minLength": 1},
        "geometry": {},
        "emitter": {},
        "receiver": {},
        "observer": {},
        "material": {},
        "presentation": {}
      }
    },
    "temporal": {
      "type": "object",
      "additionalProperties": false,
      "required": ["clockOrigin", "units", "direction", "wrap", "referenceTime", "frameIndex", "sampling"],
      "properties": {
        "clockOrigin": {"type": "string"},
        "units": {"type": "string", "enum": ["seconds", "milliseconds", "frames"]},
        "direction": {"type": "string", "enum": ["forward", "reverse", "static"]},
        "wrap": {"type": "string"},
        "referenceTime": {"type": "number"},
        "frameIndex": {"type": "integer", "minimum": 0},
        "sampling": {"type": "string"}
      }
    },
    "independentFamilies": {
      "type": "array",
      "items": {"type": "string", "enum": ["geometry", "emitter", "receiver", "observer", "material", "presentation", "temporal", "renderer"]},
      "maxItems": 1,
      "uniqueItems": true
    },
    "controlledFamilies": {
      "type": "array",
      "items": {"type": "string", "enum": ["geometry", "emitter", "receiver", "observer", "material", "presentation", "temporal", "renderer"]},
      "uniqueItems": true
    },
    "metrics": {"type": "object", "additionalProperties": true},
    "command": {"type": "string"},
    "outputs": {
      "type": "object",
      "additionalProperties": false,
      "required": ["files", "outputHash"],
      "properties": {
        "files": {"type": "array", "items": {"type": "string"}, "minItems": 1, "uniqueItems": true},
        "outputHash": {"type": "string", "pattern": "^sha256:[a-f0-9]{64}$"}
      }
    },
    "unknowns": {"type": "array", "items": {"type": "string"}, "uniqueItems": true}
  },
  "allOf": [
    {
      "if": {"properties": {"receiptType": {"enum": ["replay", "performance", "mobile"]}}},
      "then": {"required": ["temporal"]}
    }
  ]
}