#!/bin/bash
# simplefinjson 1.1 - (c) Simon Michael 2025
# simplefinjson [ACCTID]
#  download the last 30 days' transaction history of one or all accounts from SimpleFIN, and print as tidy JSON.
#
# Requirements:
#  a SimpleFIN account with financial institution(s) and app connection configured
#  curl
#  GNU date
#  jq to prettify

# Insert an access token here, acquired with simplefinsetup.
# (Or use a secrets manager, like https://bitwarden.com/help/secrets-manager-quick-start.)
SIMPLEFIN_ACCESS_URL=''

date() { if hash gdate 2>/dev/null; then gdate "$@"; else date "$@"; fi }

START=`date +%s -d '-30 days'`
ACCTPARAM=${1:+&account=$1}

curl -sL "$SIMPLEFIN_ACCESS_URL/accounts?start-date=$START$ACCTPARAM" | jq

# https://www.simplefin.org/protocol.html#http-endpoints
# https://www.simplefin.org/protocol.html#get-accounts
# Parameter	Required	Description
# start-date	optional	If given, transactions will be restricted to those on or after this Unix epoch timestamp.
# end-date	optional	If given, transactions will be restricted to those before (but not on) this Unix epoch timestamp.
# pending	optional	If pending=1 is provided, pending transactions will be included (if supported). By default, pending transaction are NOT included.
# account	optional	If given, only return information related to the given account id. May be specified multiple times.
# balances-only	optional	If balances-only=1 is provided, no transaction data is returned.