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# The k parameter defining the number of rows used in our circuit (2^k)
k = 11;
field = "pallas";

# The constants we define for our circuit
constant "Mint_V1" {
    EcFixedPointShort VALUE_COMMIT_VALUE,
    EcFixedPoint VALUE_COMMIT_RANDOM,
    EcFixedPointBase NULLIFIER_K,
}

# The witness coin_values we define for our circuit
witness "Mint_V1" {
    # X coordinate for public key
    Base coin_public_x,
    # Y coordinate for public key
    Base coin_public_y,
    # The coin_value of this coin
    Base coin_value,
    # The coin_token_id ID
    Base coin_token_id,
    # Allows composing this ZK proof to invoke other contracts
    Base coin_spend_hook,
    # Data passed from this coin to the invoked contract
    Base coin_user_data,
    # Unique serial number corresponding to this coin
    Base coin_blind,

    # Random blinding factor for the coin_value commitment
    Scalar value_blind,
    # Random blinding factor for the coin_token_id ID
    Base token_id_blind,
}

# The definition of our circuit
circuit "Mint_V1" {
    # Poseidon hash of the coin
    C = poseidon_hash(
        coin_public_x,
        coin_public_y,
        coin_value,
        coin_token_id,
        coin_spend_hook,
        coin_user_data,
        coin_blind,
    );
    constrain_instance(C);

    # Pedersen commitment for coin's coin_value
    vcv = ec_mul_short(coin_value, VALUE_COMMIT_VALUE);
    vcr = ec_mul(value_blind, VALUE_COMMIT_RANDOM);
    coin_value_commit = ec_add(vcv, vcr);
    # Since the coin_value commit is a curve point, we fetch its coordinates
    # and constrain them:
    constrain_instance(ec_get_x(coin_value_commit));
    constrain_instance(ec_get_y(coin_value_commit));

    # Commitment for coin's coin_token_id ID. We do a poseidon hash since it's
    # cheaper than EC operations and doesn't need the homomorphic prop.
    coin_token_id_commit = poseidon_hash(coin_token_id, token_id_blind);
    constrain_instance(coin_token_id_commit);

    # At this point we've enforced all of our public inputs.
}