commit 4084d1ca6f34a45898c9bc3e639fa3188aee1eb8
parent 6cce6cd58ba71ce777eaec300752934710d4512e
Author: NicholasFarrow <nicholas.w.farrow@gmail.com>
Date: Mon, 14 Dec 2020 21:45:15 +1100
price feed function with basic exception handling. Single source of price
Diffstat:
2 files changed, 49 insertions(+), 13 deletions(-)
diff --git a/README.md b/README.md
@@ -33,26 +33,26 @@ Requires end-to-end payment, handling both success and failure
# On php post,
-# Call btcpy with invoice commands
-# Invoice is in USD (default) and converts automatically to BTC
-# conversion_to_usd.py
-# Call bitcoind to create a new address
-# Save invoice with address to database
+* Call btcpy with invoice commands
+* Invoice is in USD (default) and converts automatically to BTC
+* conversion_to_usd.py
+* Call bitcoind to create a new address
+* Save invoice with address to database
- Pandas
- SQL?
- Other?
-# read address form database back:
-# Pass address back to website
-# Wait for user send...
+* read address form database back:
+* Pass address back to website
+* Wait for user send...
# btc_pay
-# Check bitcoind mempool every 5 seconds for incoming transactions,
-# wait for x confirmations (x also determines invoice_timeout)
-# After x confirmations, return as paid to website and unlock/call any other function. This could even be a custom script like sale_success_command.sh (link to digital good, call other APIs)
-# Need to integrate with at least 1 shop, woocommerce, as a proof of concept.
+* Check bitcoind mempool every 5 seconds for incoming transactions,
+* wait for x confirmations (x also determines invoice_timeout)
+* After x confirmations, return as paid to website and unlock/call any other function. This could even be a custom script like sale_success_command.sh (link to digital good, call other APIs)
+* Need to integrate with at least 1 shop, woocommerce, as a proof of concept.
# lighting_pay
-# Same but integrate c_lightning.py for proof of concept.
+* Same but integrate c_lightning.py for proof of concept.
# success/
diff --git a/invoice/price_feed.py b/invoice/price_feed.py
@@ -0,0 +1,36 @@
+import requests
+
+def get_price(currency):
+ price_feed = "https://api.coindesk.com/v1/bpi/currentprice.json"
+ r = requests.get(price_feed)
+
+ try:
+ price_data = r.json()
+ prices = price_data['bpi']
+ except:
+ print("Failed to reach {}.".format(price_feed))
+ return None
+
+ try:
+ price = prices[currency]['rate'].replace(',', '')
+ except:
+ print("Failed to find currency {} from {}.".format(currency, price_feed))
+ return None
+
+ return price
+
+
+def get_btc_value(dollar_value, currency):
+ if (price := get_price(currency)) is not None:
+
+ try:
+ float_value = float(price) * dollar_value
+ if not isinstance(float_value, float):
+ raise Exception("Dollar value should be a float.")
+ except Exception as e:
+ print(e)
+ raise
+
+ return float_value
+
+ raise Exception("Failed to get dollar value.")
