syntax = "proto3";

package basicswap;

/* Step 1, seller -> network */
message OfferMessage {
    uint32 coin_from = 1;
    uint32 coin_to = 2;
    uint64 amount_from = 3;
    uint64 rate = 4;
    uint64 min_bid_amount = 5;
    uint64 time_valid = 6;
    enum LockType {
        NOT_SET = 0;
        SEQUENCE_LOCK_BLOCKS = 1;
        SEQUENCE_LOCK_TIME = 2;
        ABS_LOCK_BLOCKS = 3;
        ABS_LOCK_TIME = 4;
    }
    LockType lock_type = 7;
    uint32 lock_value = 8;
    uint32 swap_type = 9;

    /* optional */
    string proof_address = 10;
    string proof_signature = 11;
    bytes pkhash_seller = 12;
    bytes secret_hash = 13;
}

/* Step 2, buyer -> seller */
message BidMessage {
    bytes offer_msg_id = 1;
    uint64 time_valid = 2;          /* seconds bid is valid for */
    uint64 amount = 3;              /* amount of amount_from bid is for */

    /* optional */
    bytes pkhash_buyer = 4;         /* buyer's address to receive amount_from */
    string proof_address = 5;
    string proof_signature = 6;
}

/* Step 3, seller -> buyer */
message BidAcceptMessage {
    bytes bid_msg_id = 1;
    bytes initiate_txid = 2;
    bytes contract_script = 3;
}