[api] Get history to address

[olemis]

[GET] /api/transactions/history/to/{address}?take=integer&[afterHash=string]

Should return completed transactions that transfer fund to the address and that were broadcasted
after the transaction with the hash equal to the afterHash.
If afterHash is empty, transactions should be read from the beginning.
Should include all transactions broadcasted even those not going through /transaction/broadcast/* API endpoints.
If there are no transactions to return, empty array should be returned.
Amount of the returned transactions should not exceed take.

Response:

[
{
// Operation ID.
// Can be empty.
// Should be not empty for transactions that
// broadcasted using this Blockchain.Api
“operationId”: “guid”,

// Transaction moment as ISO 8601 in UTC
“timestamp”: “datetime”,

// Source address
“fromAddress”: “string”,

// Destination address
“toAddress”: “string”,

// Asset ID e.g. SKY
“assetId”: “string”

// ​ Amount without fee. Is integer as string, aligned
// to the asset accuracy. Actual value can be
// calculated as
// x = sourceAmount * (10 ^ asset.Accuracy)
“amount”: “string”,

// Transaction hash as base64 string
“hash”: “string”
}
]

Python implementation

@api.route('/transactions/history/to/<string:address>', methods=['GET'])
def get_history_to_address(address):
    """
    Returns completed transactions that transfer fund to the address 
    """
    
    if not exists_address_transfer_observation_to(address):
        return make_response(jsonify(build_error('No content: transactions to the address are not observed')), 204)
    
    take = request.args.get('take')
    if take is None:
        take = 0
    else:
        take = int(take)
    
    afterhash = request.args.get('afterHash'.lower())
    if afterhash is None:
        afterhash = ''
       
    update_index() 
    items = get_transactions_to(address, take, afterhash)

    response = items if take == 0 else items[0:take]

   return jsonify(response)