# Dero Swaps

## Build from source
Clone the repository to your local disk.\
Run `go mod tidy` and compile with `go build`.

## Configuration
There are no paramters (yet).\
Instead, 2 config files are used.\
Place the following two config files in the program directory.
- **config.json**
```
{
        "listen"        : (string) IP:Port to listen on,
        "btc_daemon"    : (string) IP:Port of Bitcoin daemon,
        "btc_dir"       : (string) path to Bitcoin directory,
        "ltc_daemon"    : (string) IP:Port of Litecoin daemon,
        "ltc_dir"       : (string) path to Litecoin directory,
        "arrr_daemon"   : (string) IP:Port of Pirate daemon,
        "arrr_dir"      : (string) path to Pirate directory,
        "monero_wallet" : (string) IP:Port of Monero Wallet,
        "dero_daemon"   : (string) IP:Port of Dero Daemon,
        "dero_wallet"   : (string) IP:Port of Dero Wallet,
        "pairs"         : (string array) enabled pairs
}
```
Example file:
```
{
        "listen"        : "192.168.177.161:10413",
        "btc_daemon"    : "localhost:8332",
        "btc_dir"       : "/mnt/bitcoin",
        "ltc_daemon"    : "localhost:9332",
        "ltc_dir"       : "/mnt/litecoin",
        "arrr_daemon"   : "localhost:45453",
        "arrr_dir"      : "/mnt/pirate",
        "monero_wallet" : "localhost:18090",
        "dero_daemon"   : "localhost:10102",
        "dero_wallet"   : "localhost:10103",
        "pairs"         : ["btc-dero","ltc-dero","arrr-dero","dero-ltc","dero-btc","dero-arrr","xmr-dero","dero-xmr"]
}
```
- **fees.json**
```
{
        "withdrawal" :  {
                "dero-btc"      : (float) Bitcoin withdrawal fee,
                "dero-ltc"      : (float) Litecoin withdrawal fee,
                "dero-arrr"     : (float) Pirate withdrawal fee,
                "dero-xmr"      : (float) Monero withdrawal fee
        },
        "swap"  : {
                "bid": (float) in percent, Bid fees 
                "ask": (float) in percent, Ask fees
        }
}
```
Example file:
```
{
        "withdrawal" :  {
                "dero-btc"      : 0.00004,
                "dero-ltc"      : 0.0002,
                "dero-arrr"     : 0.001,
                "dero-xmr"      : 0.00006
        },
        "swap"  : {
                "bid": 0.75,
                "ask": 0.75
        }
}
```

The mentioned *withdrawal* fees are recommended and can be adjusted later.
### Available Pairs
The following Pairs are supported:
- btc-dero
- ltc-dero
- xmr-dero
- arrr-dero
- dero-btc
- dero-ltc
- dero-xmr
- dero-arrr

## Usage
The swap service starts a *websocket* server. 
Bitcoin, Litecoin and Pirate swaps require a local node. 
The easiest way to start is to enable **dero-xmr** and **xmr-dero** swaps.
The Monero wallet can be pointed to a public remote node.

### Methods
- **balance** (get pool liquidity)
- **market** (get price data)
- **swap** (create a swap request)
 ### JSON parameters
 There are no parameters required for methods *market* and *balance*\
 
 **swap** params
 ```
{
		"pair"          : (string) swap pair,
		"amount"        : (float) swap amount (in Dero),
		"dero_address"  : (string) Destination wallet address
}
```
### JSON responses
**balance** response
```
"result": {
    "dero" : (float) Dero pool,
    "ltc"  : (float) Litecoin pool,
    "btc"  : (float) Bitcoin pool,
    "arrr" : (float) Pirate pool,
    "xmr"  : (float) Monero Pool
}
```
**market** response
```
"result": {
    "ltcdero"  : (float) LTC price for buying 1 Dero,
    "btcdero"  : (float) BTC price for buying 1 Dero,
    "xmrdero"  : (float) XMR price for buying 1 Dero,
    "arrrdero" : (float) ARRR price for buying 1 Dero,
    "deroltc"  : (float) LTC price for selling 1 Dero
    "derobtc"  : (float) BTC price for selling 1 Dero,
    "deroxmr"  : (float) XMR price for selling 1 Dero,
    "deroarrr" : (float) ARRR price for selling 1 Dero,
}
```
**swap** response
```
    "id"       : (int) Swap ID,,
    "wallet"   : (string) Deposit wallet
    "deposit"  : (float) Deposit amount,
    "swap"     : (float)`Payout value, only used for Dero-* swaps,
    "error"    : (string) error message, if present,
    "request"  : (Swap_Request) Swap JSON parameters
```