#!/bin/bash

# Calculate yesterday's date in YYYY-MM-DD format
YESTERDAY=$(date -d "yesterday" +%Y-%m-%d)
echo "Starting price tracking for $YESTERDAY" >&2

# Fetch and process rates for a fiat currency
get_price_data() {
    local currency=$1
    local data avg open24 last

    data=$(curl -s "https://www.bitstamp.net/api/v2/ticker/btc${currency,,}/")
    if [ $? -eq 0 ] && [ ! -z "$data" ]; then
        echo "Successfully retrieved ${currency} price data" >&2
        open24=$(echo "$data" | jq -r '.open_24')
        last=$(echo "$data" | jq -r '.last')
        avg=$(( (${open24%.*} + ${last%.*}) / 2 ))
        echo $avg
    else
        echo "ERROR: Failed to retrieve ${currency} price data" >&2
        exit 1
    fi
}

# Get price data for each currency
usd_avg=$(get_price_data "USD")
eur_avg=$(get_price_data "EUR")
gbp_avg=$(get_price_data "GBP")

# Create JSON
json="{\"EUR\":$eur_avg,\"USD\":$usd_avg,\"GBP\":$gbp_avg}"
echo "Rates: $json" >&2

# PUT in remote storage
response=$(curl -X PUT \
    -H "Authorization: Bearer $RS_AUTH" \
    -H "Content-Type: application/json" \
    -d "$json" \
    -w "%{http_code}" \
    -s \
    -o /dev/null \
    "<%= @rs_base_url %>/$YESTERDAY")

if [ "$response" -eq 200 ] || [ "$response" -eq 201 ]; then
   echo "Successfully uploaded price data" >&2
else
   echo "ERROR: Failed to upload price data. HTTP status: $response" >&2
   exit 1
fi