Initial commit, created get-prices

.gitignore

@@ -0,0 +1 @@
+config.env

LICENSE.md

@@ -0,0 +1,21 @@
+# MIT License
+
+**Copyright (c) 2022 Keith Irwin**
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -0,0 +1,39 @@
+# hledger scripts
+
+Some scripts for hledger
+
+## get-prices
+
+Gets prices from Polygon.io api, and hopefully some alternatives in the future.  Run this as a timer or cronjob to keep your prices file up-to-date with your assets.  
+
+Create a config file:
+
+```sh
+$ cp example.config.env config.env
+```
+
+Edit the config file, then run `./get-prices` regularly
+
+## License (MIT)
+
+**Copyright (c) 2022 Keith Irwin**
+
+```
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+```

example.config.env

@@ -0,0 +1,16 @@
+# Paths
+PRICES_FILE="~/hledger/$(date +%Y).prices"
+
+# API KEYS
+POLYGON_API_KEY='XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'
+
+# Assets
+declare -A assets; assets+=(
+	# Key is the name that goes in the journal
+	# Value is the ticker searched in the API
+	["BTC"]="X:BTCUSD"
+	["ETH"]="X:ETHUSD"
+	["XMR"]="X:XMRUSD"
+	["MKR"]="X:MKRUSD"
+	["AMD"]="AMD"
+)

get-prices

@@ -0,0 +1,59 @@
+#!/bin/bash
+# hledger-prices
+#
+# Retrieve and update hledger prices file
+
+
+# Check bash version
+# https://askubuntu.com/a/916978/533341
+if [ ! "${BASH_VERSINFO:-0}" -ge 4 ]; then
+	echo "Bash version 4 or higher required!"
+	echo "Your version: ${BASH_VERSION}"
+	exit 1
+fi
+
+# Import config.env
+if [ ! -f "config.env" ]; then
+	echo "config.env not found!"
+	exit 2
+fi; . config.env
+if [ "${PRICES_FILE}" == "" ]; then
+	echo "PRICES_FILE is not defined in config.env"
+	exit 3
+elif [ "${POLYGON_API_KEY}" == "" ]; then
+	echo "POLYGON_API_KEY is not defined in config.env"
+	exit 3
+fi
+
+# Create prices file if it doesn't exist
+if [ ! -f "${PRICES_FILE}" ]; then
+	mkdir -p "$(dirname PRICES_FILE)" 2>/dev/null
+	touch "$PRICES_FILE"
+fi
+
+# Do the thing
+for asset in ${!assets[@]}; do
+	echo "Checking $asset..."
+	url="https://api.polygon.io/v2/aggs/ticker/${assets[${asset}]}/prev?apiKey=${POLYGON_API_KEY}"
+	echo "	URL: $url"
+	res=$(curl --silent "$url")
+
+	# Check the result
+	if [ "$(echo $res | jq -r '.status')" == "ERROR" ]; then
+		echo "	$(echo $res | jq -r '.error')"
+	elif [ "$(echo $res | jq -r '.resultsCount')" == "0" ]; then
+		echo "	No results found!"
+	elif [ "$(echo $res | jq -r '.results[0].vw')" == "null" ]; then
+		echo "	Result was null!"
+
+	# Looks good; add it
+	else
+		price=$(echo $res | jq '.results[0].vw')
+		echo "	Price: $price"
+		line="P	$(date -I --date=yesterday)	$asset"
+		grep "$line" "$PRICES_FILE" \
+			|| echo "$line	\$$price" >> "$PRICES_FILE"
+		sleep 10 # Optional, check API limits
+	fi
+
+done