openapi: 3.0.0
info:
  title: Wallet API
  version: 0.0.1
servers:
  - url: https://example.com/api/validator
tags:
  - name: wallet
paths:
  /v0/wallet/transfer-offers:
    post:
      summary: "POST /v0/wallet/transfer-offers"
      description: |
        Create an offer to directly transfer a given amount of Amulet to another party.
        Direct transfers are a three-step process:
        1. The sender creates a transfer offer
        2. The receiver accepts the offer
        3. The sender's wallet automation consumes the accepted offer and transfers the amount.
           Amulets are not locked for direct transfers.
           If the sender's wallet does not have enough Amulet to fulfill the offer at this point,
           the transfer will fail.
      tags:
        - wallet
      x-jvm-package: external.wallet
      operationId: createTransferOffer
      security:
        - walletUserAuth: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateTransferOfferRequest'
      responses:
        '200':
          description: The transfer offer has been created.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateTransferOfferResponse'
        '400':
          description: |
            Invalid request, check the error response for details.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '404':
          description: |
            The submitter’s wallet could not be found.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '409':
          description: A transfer offer with the same tracking id has been created. Check the status endpoint for the current status.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '429':
          description: A transfer offer with the same tracking id is currently being processed, which may or may not succeed. Retry submitting the request with exponential back-off.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '500':
          $ref: '#/components/responses/500'
    get:
      summary: "GET /v0/wallet/transfer-offers"
      description: List all open transfer offers where the user is either sender or receiver.
      tags:
        - wallet
      x-jvm-package: external.wallet
      operationId: listTransferOffers
      security:
        - walletUserAuth: []
      responses:
        '200':
          description: ok
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListTransferOffersResponse'
        '404':
          $ref: '#/components/responses/404'
        '500':
          $ref: '#/components/responses/500'
  /v0/wallet/transfer-offers/{tracking_id}/status:
    post:
      summary: "POST /v0/wallet/transfer-offers/:tracking_id/status"
      description: |
        Check the status of a transfer offer with a given tracking id.
      tags:
        - wallet
      x-jvm-package: external.wallet
      operationId: getTransferOfferStatus
      security:
        - walletUserAuth: []
      parameters:
        - in: path
          name: tracking_id
          required: true
          schema:
            type: string
      responses:
        '200':
          description: An offer with this tracking id is known. Check the response for its status.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetTransferOfferStatusResponse'
        '404':
          description: |
            No offer with this tracking id is known.
            Perhaps it has not yet been submitted or processed; or it has been submitted
            in the past before the current beginning of the wallet transaction log.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
  /v0/wallet/buy-traffic-requests:
    post:
      summary: "POST /v0/wallet/buy-traffic-requests"
      description: Create a request to buy traffic. Note that this only creates the request to do so. Refer to the status endpoint to check if the request succeeded.
      tags:
        - wallet
      x-jvm-package: external.wallet
      operationId: createBuyTrafficRequest
      security:
        - walletUserAuth: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateBuyTrafficRequest'
      responses:
        '200':
          description: Request to buy traffic got created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateBuyTrafficRequestResponse'
        '400':
          description: Request was invalid, adjust parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '409':
          description: A request to buy traffic with the same tracking id has been created. Check the status endpoint for the current status.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '429':
          description: A request to buy traffic with the same tracking id is currently being processed. Check the status endpoint and resubmit if it returns 404.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '500':
          description: Internal server error that requires operator investigation. Retrying for a small number of times with exponential back-off MAY work.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
  /v0/wallet/buy-traffic-requests/{tracking_id}/status:
    post:
      summary: "POST /v0/wallet/buy-traffic-requests/:tracking_id/status"
      description: |
        Check the status of a buy traffic request with a given tracking id.
      tags:
        - wallet
      x-jvm-package: external.wallet
      operationId: getBuyTrafficRequestStatus
      security:
        - walletUserAuth: []
      parameters:
        - in: path
          name: tracking_id
          required: true
          schema:
            type: string
      responses:
        '200':
          description: A request to buy traffic with this tracking id has been submitted before, check the response for details.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetBuyTrafficRequestStatusResponse'
        '404':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
          description: No request with this tracking id was found.
components:
  securitySchemes:
    walletUserAuth:
      description: |
        JWT token as described by the `spliceAppBearerAuth` security scheme.
        The subject of the token must be ledger API user of the user whose wallet the endpoint affects.
      type: http
      scheme: bearer
      bearerFormat: JWT
  schemas:
    CreateTransferOfferRequest:
      type: object
      required:
        - receiver_party_id
        - amount
        - description
        - expires_at
        - tracking_id
      properties:
        receiver_party_id:
          description: |
            The party id of the receiver.
          type: string
        amount:
          description: |
            The amount of Amulet to transfer.
          type: string
        description:
          description: |
            An arbitrary, user chosen text.
            This should be a human readable string that describes the purpose of the transfer.
            It will be shown to the receiver when they decide whether to accept the offer.
          type: string
        expires_at:
          description: |
            Expiry time of the transfer offer as unix timestamp in microseconds. After this time, the offer can no longer be accepted
            and automation in the wallet will eventually expire the transfer offer.
            Note that this time is compared against the ledger effective time of the Daml transaction accepting or expiring an offer, and can skew from the wall clock
            time measured on the caller's machine. See https://docs.daml.com/concepts/time.html
            for how ledger effective time is bound to the record time of a transaction on a domain.
          type: integer
          format: int64
        tracking_id:
          description: |
            Tracking id to support exactly once submission. Once submitted, all successive calls with the same tracking id
            will get rejected with a 409 or 429 status code unless the command fails and the offer did not get created.
            Clients should create a fresh tracking id when they try to create a new transfer offer. If that command submission fails
            with a retryable error or the application crashed and got restarted, successive command submissions must reuse the same
            tracking id to ensure they don't create the same offer multiple times.
          type: string
    BaseGetTransferOfferStatusResponse:
      type: object
      required:
        - status
      properties:
        status:
          type: string
          description: |
            The status of the transfer offer.
            created:
              The offer has been created and is waiting for the receiver to accept it.
              contract_id points to the contract_id of the offer and transaction_id to the transaction that created it.
            accepted:
              The offer has been accepted by the receiver and is waiting for the wallet automation
              to complete it by delivering the offered Amulet.
              contract_id points to the contract id of the accepted offer and transaction_id to the transaction that accepted it
            completed:
              The transfer has been completed and the CC amount has been transferred to the receiver.
              contract_id points to the contract id of the created amulet for the receiver and
              transaction_id to the transaction of the transfer.
            failed:
              The transfer has failed permanently and no CC has been transferred. Refer to
              failure_reason for details. A new transfer offer can be created with a different tracking_id.
    TransferOfferCreatedResponse:
      allOf:
        - $ref: '#/components/schemas/BaseGetTransferOfferStatusResponse'
        - type: object
          required:
            - transaction_id
            - contract_id
          properties:
            transaction_id:
              type: string
              description: |
                Id of the transaction that created the transfer offer
            contract_id:
              type: string
              description: |
                Contract id of the created transfer offer
    TransferOfferAcceptedResponse:
      allOf:
        - $ref: '#/components/schemas/BaseGetTransferOfferStatusResponse'
        - type: object
          required:
            - transaction_id
            - contract_id
          properties:
            transaction_id:
              type: string
              description: |
                Id of the transaction that accepted the transfer offer
            contract_id:
              type: string
              description: |
                Contract id of the accepted transfer offer
    TransferOfferCompletedResponse:
      allOf:
        - $ref: '#/components/schemas/BaseGetTransferOfferStatusResponse'
        - type: object
          required:
            - transaction_id
            - contract_id
          properties:
            transaction_id:
              type: string
              description: |
                Id of the transaction of the transfer
            contract_id:
              type: string
              description: |
                Contract id of the created amulet for the receiver
    TransferOfferFailedResponse:
      allOf:
        - $ref: '#/components/schemas/BaseGetTransferOfferStatusResponse'
        - type: object
          required:
            - failure_kind
          properties:
            failure_kind:
              type: string
              description: |
                The reason for the failure of the transfer offer.
                expired:
                  The transfer offer or the accepted transfer offer expired before it could be completed.
                rejected:
                  The receiver rejected the transfer offer or withdrew their accepted offer.
                withdrawn:
                  The sender withdraw their offer, e.g., due to insufficient funds or operational reasons.
              enum:
                - expired
                - rejected
                - withdrawn
            withdrawn_reason:
              type: string
              description: |
                Human readable description of the reason for the sender withdrawing their offer.
    GetTransferOfferStatusResponse:
      oneOf:
        - $ref: '#/components/schemas/TransferOfferCreatedResponse'
        - $ref: '#/components/schemas/TransferOfferAcceptedResponse'
        - $ref: '#/components/schemas/TransferOfferCompletedResponse'
        - $ref: '#/components/schemas/TransferOfferFailedResponse'
      discriminator:
        propertyName: status
        mapping:
          created: '#/components/schemas/TransferOfferCreatedResponse'
          accepted: '#/components/schemas/TransferOfferAcceptedResponse'
          completed: '#/components/schemas/TransferOfferCompletedResponse'
          failed: '#/components/schemas/TransferOfferFailedResponse'
    CreateTransferOfferResponse:
      type: object
      required:
        - offer_contract_id
      properties:
        offer_contract_id:
          type: string
    ListTransferOffersResponse:
      type: object
      required:
        - offers
      properties:
        offers:
          type: array
          items:
            $ref: '#/components/schemas/Contract'
    CreateBuyTrafficRequest:
      type: object
      required:
        - receiving_validator_party_id
        - domain_id
        - traffic_amount
        - tracking_id
        - expires_at
      properties:
        receiving_validator_party_id:
          description: |
            Traffic will be purchased for the validator hosting this party.
            If the party is hosted on multiple participants, the request will fail with 400 Bad Request.
          type: string
        domain_id:
          description: |
            The domain to purchase traffic for.
          type: string
        traffic_amount:
          description: |
            traffic to purchase in bytes.
          type: integer
          format: int64
        tracking_id:
          description: |
            Tracking id to support exactly once submission. Once submitted, all succeessive calls with the same tracking id
            will get rejected with a 409 or 429 status code unless the command fails and the traffic did not get purchased.
            Clients should create a fresh tracking id when they try to send a new request to buy traffic. If that command submission fails
            with a retryable error or the application crashed and got restarted, successive command submissions must reuse the same
            tracking id to ensure they don't purchase traffic multiple times.
          type: string
        expires_at:
          description: |
            Expiry time of the request to buy traffic as unix timestamp in microseconds. If the request does not
            succeed before this time, the wallet automation will reject and expire it.
            Note that this time is compared against the ledger effective time of the Daml transaction accepting or expiring an offer, and can skew from the wall clock
            time measured on the caller's machine. See https://docs.daml.com/concepts/time.html
            for how ledger effective time is bound to the record time of a transaction on a domain.
          type: integer
          format: int64
    CreateBuyTrafficRequestResponse:
      type: object
      required:
        - request_contract_id
      properties:
        request_contract_id:
          type: string
    BaseGetBuyTrafficRequestStatusResponse:
      type: object
      required:
        - status
      properties:
        status:
          type: string
          description: |
            The status of the traffic request
            created:
              The request to buy traffic has been created and is waiting for
              the wallet automation to pick it up.
            completed:
              The traffic has been purchased.
              transaction_id points to the transaction that purchased traffic.
            failed:
              The request to buy traffic has failed permanently and no CC has been transferred. Refer to
              failure_reason for details. Use a new tracking_id if you want to retry buying traffic.
    BuyTrafficRequestCreatedResponse:
      allOf:
        - $ref: '#/components/schemas/BaseGetBuyTrafficRequestStatusResponse'
    BuyTrafficRequestCompletedResponse:
      allOf:
        - $ref: '#/components/schemas/BaseGetBuyTrafficRequestStatusResponse'
        - type: object
          required:
            - transaction_id
          properties:
            transaction_id:
              type: string
              description: |
                Id of the transaction that purchased traffic.
    BuyTrafficRequestFailedResponse:
      allOf:
        - $ref: '#/components/schemas/BaseGetBuyTrafficRequestStatusResponse'
        - type: object
          required:
            - failure_reason
          properties:
            failure_reason:
              type: string
              description: |
                The reason for the failure of the request to buy traffic.
                expired:
                  The wallet automation did not process the request in time.
                rejected:
                  The wallet automation rejected the request, e.g., due to insufficient funds or operational reasons.
              enum:
                - expired
                - rejected
            rejection_reason:
              description: |
                Human readable description of the rejection reason.
              type: string
    GetBuyTrafficRequestStatusResponse:
      oneOf:
        - $ref: '#/components/schemas/BuyTrafficRequestCreatedResponse'
        - $ref: '#/components/schemas/BuyTrafficRequestCompletedResponse'
        - $ref: '#/components/schemas/BuyTrafficRequestFailedResponse'
      discriminator:
        propertyName: status
        mapping:
          created: '#/components/schemas/BuyTrafficRequestCreatedResponse'
          completed: '#/components/schemas/BuyTrafficRequestCompletedResponse'
          failed: '#/components/schemas/BuyTrafficRequestFailedResponse'
    Contract:
      type: object
      properties:
        template_id:
          type: string
        contract_id:
          type: string
        payload:
          type: object
        created_event_blob:
          type: string
        created_at:
          type: string
      required:
        - template_id
        - contract_id
        - payload
        - created_event_blob
        - created_at
    ErrorResponse:
      type: object
      required:
        - error
      properties:
        error:
          type: string
  responses:
    '404':
      description: not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    '500':
      description: internal server error
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'