#!/usr/bin/env bash
set -euo pipefail
: "${CRYPTANIO_API_KEY:?Set CRYPTANIO_API_KEY}"
: "${CRYPTANIO_OPERATION_ID:?Set CRYPTANIO_OPERATION_ID}"
: "${CRYPTANIO_PROJECT_ID:?Set CRYPTANIO_PROJECT_ID}"
json_string() {
  local text="$1" char code index output='"'
  for ((index=0; index<${#text}; index++)); do
    char="${text:index:1}"
    case "$char" in
      '"'|'\') output+="\\$char" ;;
      *) printf -v code '%d' "'$char"
         if ((code < 32)); then printf -v char '\\u%04x' "$code"; fi
         output+="$char" ;;
    esac
  done
  printf '%s"' "$output"
}
response_file="$(mktemp)"
trap 'rm -f "$response_file"' EXIT
transfer_status=0
http_status="$(curl \
  --silent --show-error --max-time 30 --request POST \
  --header "Authorization: Bearer $CRYPTANIO_API_KEY" \
  --header 'Accept: application/json' \
  --header 'Content-Type: application/json' \
  --header "Idempotency-Key: $CRYPTANIO_OPERATION_ID" \
  --data-binary '{"project":'"$(json_string "$CRYPTANIO_PROJECT_ID")"',"invoice_currency":"USD","invoice_amount":"12.50","reference":"order-42"}' \
  "https://api.cryptanio.com/v1/invoices" \
  --output "$response_file" --write-out '%{http_code}')" || transfer_status=$?
if [[ "$http_status" == 2?? ]]; then
  cat "$response_file"
  exit "$transfer_status"
fi
printf 'HTTP %s\n' "$http_status" >&2
cat "$response_file" >&2
exit 1