{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://bdekoz.github.io/cartofreako/contracts/artifacts-v1.schema.json",
  "title": "Cartofreako artifact catalog v1",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "schema",
    "catalogVersion",
    "consumerProfile",
    "sourceRevision",
    "artifacts"
  ],
  "properties": {
    "schema": {"const": "cartofreako-artifacts-v1"},
    "catalogVersion": {"const": 1},
    "consumerProfile": {
      "type": "object",
      "additionalProperties": false,
      "required": ["id", "canvas", "fit", "background", "recipeVersion"],
      "properties": {
        "id": {"const": "screen-1080p-lossless-v1"},
        "canvas": {"$ref": "#/$defs/dimensions"},
        "fit": {"const": "contain"},
        "background": {"type": "string", "pattern": "^#[0-9a-f]{6}$"},
        "recipeVersion": {"type": "integer", "minimum": 1}
      }
    },
    "sourceRevision": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "gitCommit", "workingTree", "runtimeApi", "geometryAbi",
        "standardManifest", "standardManifestSha256"
      ],
      "properties": {
        "gitCommit": {"type": "string", "pattern": "^[0-9a-f]{40}$"},
        "workingTree": {"enum": ["clean", "modified"]},
        "runtimeApi": {"const": 3},
        "geometryAbi": {"const": 1},
        "standardManifest": {"const": "contracts/standard-artifact-manifest-v1.json"},
        "standardManifestSha256": {"type": "string", "pattern": "^[0-9a-f]{64}$"}
      }
    },
    "artifacts": {
      "type": "array",
      "minItems": 1,
      "items": {"$ref": "#/$defs/artifact"}
    }
  },
  "$defs": {
    "dimensions": {
      "type": "object",
      "additionalProperties": false,
      "required": ["width", "height"],
      "properties": {
        "width": {"type": "number", "exclusiveMinimum": 0},
        "height": {"type": "number", "exclusiveMinimum": 0}
      }
    },
    "frame": {
      "type": "object",
      "additionalProperties": false,
      "required": ["x", "y", "width", "height"],
      "properties": {
        "x": {"type": "number"},
        "y": {"type": "number"},
        "width": {"type": "number", "exclusiveMinimum": 0},
        "height": {"type": "number", "exclusiveMinimum": 0}
      }
    },
    "file": {
      "type": "object",
      "additionalProperties": false,
      "required": ["path", "mediaType", "bytes", "sha256", "authorityClass"],
      "properties": {
        "path": {"type": "string", "minLength": 1},
        "mediaType": {"type": "string", "minLength": 1},
        "bytes": {"type": "integer", "minimum": 1},
        "sha256": {"type": "string", "pattern": "^[0-9a-f]{64}$"},
        "authorityClass": {
          "enum": [
            "archive-art-master",
            "print-presentation",
            "full-raster",
            "access-derivative"
          ]
        },
        "dimensions": {"$ref": "#/$defs/dimensions"},
        "lossless": {"type": "boolean"},
        "contentMediaType": {"type": "string", "minLength": 1},
        "contentEncoding": {"enum": ["gzip"]},
        "colorSpace": {"enum": ["sRGB", "UNAVAILABLE"]},
        "transparency": {"enum": ["opaque", "alpha", "UNAVAILABLE"]},
        "role": {"type": "string", "minLength": 1}
      }
    },
    "rectangle": {
      "type": "object",
      "additionalProperties": false,
      "required": ["x", "y", "width", "height"],
      "properties": {
        "x": {"type": "number", "minimum": 0},
        "y": {"type": "number", "minimum": 0},
        "width": {"type": "number", "exclusiveMinimum": 0},
        "height": {"type": "number", "exclusiveMinimum": 0}
      }
    },
    "matrix": {
      "type": "array",
      "minItems": 9,
      "maxItems": 9,
      "items": {"type": "number"}
    },
    "artifact": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "id",
        "title",
        "altText",
        "pass",
        "projection",
        "slice",
        "evidence",
        "accessibility",
        "parents",
        "screen",
        "limitations"
      ],
      "properties": {
        "id": {"type": "string", "pattern": "^[a-z0-9][a-z0-9.-]+$"},
        "title": {"type": "string", "minLength": 1},
        "altText": {"type": "string", "minLength": 1},
        "pass": {
          "type": "object",
          "additionalProperties": false,
          "required": ["id", "lifecycle", "sourcePeriod"],
          "properties": {
            "id": {"type": "string", "minLength": 1},
            "lifecycle": {"enum": ["standard", "optional", "exploration-only"]},
            "sourcePeriod": {"type": "string", "minLength": 1},
            "year": {"type": "integer", "minimum": 1900, "maximum": 2200}
          }
        },
        "projection": {
          "type": "object",
          "additionalProperties": false,
          "required": [
            "id", "family", "layoutId", "nativeFrame", "artifactFrame",
            "cutTopology", "inverseMode", "nativeCellCount", "componentCount"
          ],
          "properties": {
            "id": {"type": "string", "minLength": 1},
            "family": {"enum": ["cahill-keyes", "authagraph", "dymaxion", "myriahedral", "star-x", "voronoi"]},
            "layoutId": {"type": "string", "minLength": 1},
            "nativeFrame": {"$ref": "#/$defs/frame"},
            "artifactFrame": {"$ref": "#/$defs/frame"},
            "cutTopology": {"enum": ["folded", "periodic", "polyhedral"]},
            "inverseMode": {"enum": ["face-qualified", "candidates"]},
            "nativeCellCount": {"type": "integer", "minimum": 1},
            "componentCount": {"type": "integer", "minimum": 1}
          }
        },
        "slice": {
          "oneOf": [
            {"type": "null"},
            {
              "type": "object",
              "additionalProperties": false,
              "required": ["id", "approval"],
              "properties": {
                "id": {"type": "string", "minLength": 1},
                "approval": {"const": "standard-approved"}
              }
            }
          ]
        },
        "evidence": {
          "type": "object",
          "additionalProperties": false,
          "required": [
            "sourcePeriod", "licenseSpdx", "attribution", "graphicOpacity",
            "missingData", "governance"
          ],
          "properties": {
            "sourcePeriod": {"type": "string", "minLength": 1},
            "licenseSpdx": {"type": "string", "minLength": 1},
            "attribution": {"type": "string", "minLength": 1},
            "graphicOpacity": {
              "oneOf": [
                {"type": "number", "minimum": 0, "maximum": 1},
                {"const": "UNAVAILABLE"}
              ]
            },
            "missingData": {"type": "string", "minLength": 1},
            "governance": {"type": "string", "minLength": 1}
          }
        },
        "accessibility": {
          "type": "object",
          "additionalProperties": false,
          "required": ["altTextStatus", "visualReviewStatus"],
          "properties": {
            "altTextStatus": {"const": "deterministic-source-metadata"},
            "visualReviewStatus": {"enum": ["pending-human-review", "human-reviewed"]}
          }
        },
        "parents": {
          "type": "object",
          "additionalProperties": false,
          "required": ["svg", "pdf", "fullPng"],
          "properties": {
            "svg": {"$ref": "#/$defs/file"},
            "pdf": {"$ref": "#/$defs/file"},
            "fullPng": {"$ref": "#/$defs/file"}
          }
        },
        "screen": {
          "type": "object",
          "additionalProperties": false,
          "required": [
            "authorityClass",
            "recipeVersion",
            "parentFullPngSha256",
            "canvas",
            "fit",
            "background",
            "contentRectangle",
            "projectedToScreen",
            "screenToProjected",
            "png",
            "webp"
          ],
          "properties": {
            "authorityClass": {"const": "access-derivative"},
            "recipeVersion": {"type": "integer", "minimum": 1},
            "parentFullPngSha256": {"type": "string", "pattern": "^[0-9a-f]{64}$"},
            "canvas": {"$ref": "#/$defs/dimensions"},
            "fit": {"const": "contain"},
            "background": {"type": "string", "pattern": "^#[0-9a-f]{6}$"},
            "contentRectangle": {"$ref": "#/$defs/rectangle"},
            "projectedToScreen": {"$ref": "#/$defs/matrix"},
            "screenToProjected": {"$ref": "#/$defs/matrix"},
            "png": {"$ref": "#/$defs/file"},
            "webp": {"$ref": "#/$defs/file"}
          }
        },
        "limitations": {
          "type": "array",
          "minItems": 1,
          "items": {"type": "string", "minLength": 1}
        }
      }
    }
  }
}