{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://www.instica.com/templates/agent-safe-unique-inventory-spec-v0.1.schema.json",
  "title": "Agent-Safe Unique Inventory Record v0.1",
  "type": "object",
  "additionalProperties": false,
  "required": ["physical_item_id", "product_id", "offer_id", "title", "canonical_url", "images", "condition", "offer", "lifecycle"],
  "properties": {
    "physical_item_id": { "type": "string", "minLength": 1 },
    "product_id": { "type": "string", "minLength": 1 },
    "offer_id": { "type": "string", "minLength": 1 },
    "title": { "type": "string", "minLength": 1 },
    "canonical_url": { "type": "string", "format": "uri" },
    "aliases": { "type": "array", "uniqueItems": true, "items": { "type": "string", "format": "uri" } },
    "redirect_target": { "type": "string", "format": "uri" },
    "channel_listings": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": ["channel", "listing_id", "url"],
        "properties": {
          "channel": { "type": "string", "minLength": 1 },
          "listing_id": { "type": "string", "minLength": 1 },
          "url": { "type": "string", "format": "uri" }
        }
      }
    },
    "images": { "type": "array", "minItems": 1, "items": { "type": "string", "format": "uri" } },
    "condition": {
      "type": "object",
      "additionalProperties": false,
      "required": ["label", "notes", "inspected_at", "evidence_urls"],
      "properties": {
        "label": { "type": "string", "minLength": 1 },
        "notes": { "type": "string" },
        "inspected_at": { "type": "string", "format": "date" },
        "evidence_urls": { "type": "array", "items": { "type": "string", "format": "uri" } }
      }
    },
    "offer": {
      "type": "object",
      "additionalProperties": false,
      "required": ["price_minor", "currency", "quantity", "availability", "observed_at", "seller_url", "shipping_policy_url", "returns_policy_url"],
      "properties": {
        "price_minor": { "type": "integer", "minimum": 0 },
        "currency": { "type": "string", "pattern": "^[A-Z]{3}$" },
        "quantity": { "type": "integer", "minimum": 0, "maximum": 1 },
        "availability": { "enum": ["available", "reserved", "sold", "withdrawn"] },
        "observed_at": { "type": "string", "format": "date-time" },
        "seller_url": { "type": "string", "format": "uri" },
        "shipping_policy_url": { "type": "string", "format": "uri" },
        "returns_policy_url": { "type": "string", "format": "uri" }
      }
    },
    "lifecycle": {
      "type": "object",
      "additionalProperties": false,
      "required": ["version", "state", "updated_at"],
      "properties": {
        "version": { "type": "string", "minLength": 1 },
        "state": { "enum": ["available", "reserved", "sold", "withdrawn"] },
        "updated_at": { "type": "string", "format": "date-time" }
      }
    }
  }
}