The QuadrigaAPI class defined in qapi.inc defines functions to make
API calls to the QuadrigaCX API version 2 as documented at
https://www.quadrigacx.com/api_info
Credentials for the API should be placed in a text file to be read
when a Private API Function gets called. The default location for the
file is $HOME/.quadriga.conf but a separate file can be specified by
calling the object's load_credentials('filename.conf'); function
after initialization. Three values should be defined in this file:
QUADRIGA_CLIENT_ID=[Your Client ID]
QUADRIGA_API_KEY=[Your API Key]
QUADRIGA_SPI_SECRET=[Your API Secret]
All Public and Private API Functions have equivalent function calls in the class, and they accept the same arguments as the API. The functions inside the class return data from the API which has been passed through json_decode() so the returned value is either a PHP array or string, or FALSE if something failed.
The function user_transactions() accepts one additional argument not
defined in the QuadrigaCX API which prunes the results and can return
only funding transactions or only trading transactions for the
account.
Aliases have been created for the following functions:
bitcoin_deposit_address = btc_in
bitcoin_withdrawal = btc_out
ether_deposit_address = eth_in
ether_withdrawal = eth_in
A function called "exchange" will attempt to determine if the given book name is valid. If so, it proceeds with a regular Sell Order (at Market price). If it determines that the given book name is backwards (ex "cad_btc") then it checks the ticker value for the appropriate book and uses the "ask" price to invert the value and reverse the book name before placing a Buy Order at Market price. This allows you to "exchange 100 CAD into BTC" which is not directly supported by the API.