{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "diffusiongemma.advertisement_reference_contract@1",
  "title": "DiffusionGemma Advertisement Reference Contract",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "schema",
    "version",
    "slot_policy",
    "subjects",
    "picture_slots",
    "relay",
    "reference_manifest",
    "reference_manifest_sha256",
    "expected_subject_count",
    "ready"
  ],
  "properties": {
    "schema": { "const": "diffusiongemma.advertisement_reference_contract" },
    "version": { "const": 1 },
    "slot_policy": { "enum": ["performer_2_product_1_relay_1", "performer_1_product_1_relay_1", "performer_2_product_1_relay_off"] },
    "subjects": {
      "type": "array",
      "minItems": 2,
      "maxItems": 2,
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": ["subject_tag", "role", "description", "retention_attributes"],
        "properties": {
          "subject_tag": { "enum": ["<Subject 1>", "<Subject 2>"] },
          "role": { "enum": ["performer", "product_package"] },
          "description": { "type": "string", "minLength": 1, "maxLength": 2000 },
          "retention_attributes": { "type": "string", "minLength": 1, "maxLength": 1000 },
          "exact_package_copy": {
            "type": "array",
            "uniqueItems": true,
            "maxItems": 32,
            "items": { "type": "string", "minLength": 1, "maxLength": 160 }
          },
          "copy_fidelity_policy": { "const": "qa_required_not_guaranteed_by_generation" }
        }
      }
    },
    "picture_slots": {
      "type": "array",
      "minItems": 2,
      "maxItems": 3,
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": ["picture_tag", "role", "subject_tag", "retention", "description", "non_transfer"],
        "properties": {
          "picture_tag": { "enum": ["<Picture 1>", "<Picture 2>", "<Picture 3>"] },
          "role": { "enum": ["performer_primary", "performer_supplemental", "product_package"] },
          "subject_tag": { "enum": ["<Subject 1>", "<Subject 2>"] },
          "retention": { "const": "fully_preserved" },
          "description": { "type": "string", "minLength": 1, "maxLength": 2000 },
          "reference_kind": { "enum": ["single_packshot", "product_contact_sheet"] },
          "non_transfer": {
            "type": "array",
            "uniqueItems": true,
            "maxItems": 8,
            "items": { "type": "string", "minLength": 1, "maxLength": 80 }
          }
        }
      }
    },
    "relay": {
      "type": "object",
      "additionalProperties": false,
      "required": ["enabled", "picture_tag", "role", "manifest_reservation"],
      "properties": {
        "enabled": { "type": "boolean" },
        "picture_tag": { "enum": ["", "<Picture 3>", "<Picture 4>"] },
        "role": { "const": "previous_lane_pose_spatial_lighting_motion_only_not_identity_or_product" },
        "manifest_reservation": { "type": "string", "maxLength": 1000 }
      }
    },
    "reference_manifest": { "type": "string", "minLength": 1, "maxLength": 10000 },
    "reference_manifest_sha256": { "type": "string", "pattern": "^[0-9a-f]{64}$" },
    "expected_subject_count": { "const": 2 },
    "ready": { "const": true }
  }
}