#!/usr/bin/env bash
# Usage: {script}
# Update the list of currency codes

set -euo pipefail

declare -r IFS=$'\n'

declare -r LIST_URL="https://www.six-group.com/dam/download/financial-information/data-center/iso-currrency/lists/list-one.xml"
declare -r LIST_FILENAME=$(mktemp)

declare -r RULE_FILENAME=$(dirname "${BASH_SOURCE}")/../library/Rules/CurrencyCode.php
declare -r RULE_FILENAME_TEMPORARY=$(mktemp)

echo "- Downloading list"
curl --silent --location "${LIST_URL}" --output "${LIST_FILENAME}"

declare -r CURRENCY_CODES_COUNT=$(grep "<CcyNtry>" "${LIST_FILENAME}" | wc --lines)

echo "- Creating temporary file"
{
  sed -n "/^</,/        return \[/p" "${RULE_FILENAME}"
  for index in $(seq 1 ${CURRENCY_CODES_COUNT}); do
    declare name=$(xmlstarlet sel --template --value-of "//CcyNtry[${index}]/CcyNm" < "${LIST_FILENAME}")
    declare code=$(xmlstarlet sel --template --value-of "//CcyNtry[${index}]/Ccy" < "${LIST_FILENAME}")

    if [[ -z "${code}" ]]; then
      continue
    fi

    echo "            '${code}', //" $(sed --regexp-extended 's, +$,,' <<< "${name}")
  done | sort --unique
  sed --silent '/^        \]/,/^}/p' "${RULE_FILENAME}"
} > "${RULE_FILENAME_TEMPORARY}"

echo "- Updating content of '$(basename ${RULE_FILENAME})'"
mv "${RULE_FILENAME_TEMPORARY}" "${RULE_FILENAME}"

echo "Finished!"