{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/paidy/main/json-schema/payment.json",
  "title": "Payment",
  "description": "A Paidy payment object representing a deferred payment authorization, capture, or refund.",
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "description": "Unique payment ID (begins with pay_)",
      "pattern": "^pay_",
      "example": "pay_example123456"
    },
    "status": {
      "type": "string",
      "description": "Current payment status",
      "enum": ["authorized", "closed", "rejected"]
    },
    "created_at": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 creation timestamp"
    },
    "expires_at": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 expiration deadline for the authorization"
    },
    "amount": {
      "type": "number",
      "description": "Total payment amount in JPY"
    },
    "currency": {
      "type": "string",
      "description": "Currency code; always JPY",
      "enum": ["JPY"]
    },
    "description": {
      "type": "string",
      "description": "Payment description"
    },
    "store_name": {
      "type": "string",
      "description": "Merchant store name shown to the consumer"
    },
    "test": {
      "type": "boolean",
      "description": "True if this is a test payment"
    },
    "tier": {
      "type": "string",
      "description": "Payment tier",
      "example": "classic"
    },
    "buyer": {
      "$ref": "#/$defs/Buyer"
    },
    "order": {
      "$ref": "#/$defs/Order"
    },
    "shipping_address": {
      "$ref": "#/$defs/Address"
    },
    "captures": {
      "type": "array",
      "description": "List of captures for this payment",
      "items": {
        "$ref": "#/$defs/Capture"
      }
    },
    "refunds": {
      "type": "array",
      "description": "List of refunds for this payment",
      "items": {
        "$ref": "#/$defs/Refund"
      }
    },
    "metadata": {
      "$ref": "#/$defs/Metadata"
    }
  },
  "$defs": {
    "Buyer": {
      "type": "object",
      "description": "Consumer buyer information",
      "properties": {
        "name1": {"type": "string", "description": "Consumer full name in kanji or kana"},
        "name2": {"type": "string", "description": "Consumer name in alternate script"},
        "email": {"type": "string", "format": "email"},
        "phone": {"type": "string"}
      }
    },
    "Address": {
      "type": "object",
      "description": "Physical address",
      "properties": {
        "line1": {"type": "string", "description": "Building or apartment info"},
        "line2": {"type": "string", "description": "District or land details"},
        "city": {"type": "string", "description": "Municipality name"},
        "state": {"type": "string", "description": "Prefecture name"},
        "zip": {"type": "string", "description": "Postal code (NNN-NNNN format)"}
      }
    },
    "Order": {
      "type": "object",
      "description": "Order details",
      "required": ["items"],
      "properties": {
        "items": {
          "type": "array",
          "items": {"$ref": "#/$defs/OrderItem"}
        },
        "tax": {"type": "number", "description": "Total tax in JPY"},
        "shipping": {"type": "number", "description": "Shipping cost in JPY"},
        "order_ref": {"type": "string", "description": "Merchant order reference"},
        "updated_at": {"type": "string", "format": "date-time"}
      }
    },
    "OrderItem": {
      "type": "object",
      "description": "A single line item in an order",
      "required": ["quantity", "unit_price"],
      "properties": {
        "quantity": {"type": "integer", "minimum": 1},
        "id": {"type": "string"},
        "title": {"type": "string"},
        "description": {"type": "string"},
        "unit_price": {"type": "number", "description": "Per-unit price in JPY; negative for discounts"}
      }
    },
    "Capture": {
      "type": "object",
      "description": "A capture record for a payment",
      "properties": {
        "id": {"type": "string", "pattern": "^cap_"},
        "created_at": {"type": "string", "format": "date-time"},
        "amount": {"type": "number"},
        "tax": {"type": "number"},
        "shipping": {"type": "number"},
        "items": {
          "type": "array",
          "items": {"$ref": "#/$defs/OrderItem"}
        },
        "metadata": {"$ref": "#/$defs/Metadata"}
      }
    },
    "Refund": {
      "type": "object",
      "description": "A refund record for a payment",
      "properties": {
        "id": {"type": "string", "pattern": "^ref_"},
        "created_at": {"type": "string", "format": "date-time"},
        "capture_id": {"type": "string", "pattern": "^cap_"},
        "amount": {"type": "number"},
        "reason": {"type": "string"},
        "metadata": {"$ref": "#/$defs/Metadata"}
      }
    },
    "Metadata": {
      "type": "object",
      "description": "Key-value map for arbitrary data; max 20 keys",
      "additionalProperties": {"type": "string"},
      "maxProperties": 20
    }
  }
}