#!/bin/bash

SED_PARAM=""

unameOut="$(uname -s)"
case "${unameOut}" in
    Linux*)     SED_PARAM=" -i ";;
    Darwin*)    SED_PARAM=" -i '' ";;
    *)          exit 1
esac

exec_with_dry_run () {
  if [[ ${1} -eq ${FLAGS_TRUE} ]]; then
    echo "# ${2}"
  else
    eval "${2}" 2> /tmp/error || \
    {
      echo -e "failed with following error";
      output=$(cat /tmp/error | sed -e "s/^/ error -> /g");
      echo -e "${output}";
      return 1;
    }
  fi
  return 0
}

edit_file () {
    dryrun=${1}
    cmd=${2}
    file=${3}
    exec_with_dry_run "${1}" "${2}" || return 1
    exec_with_dry_run "${1}" "git add ${3}" || return 1
    return 0
}

main () {
    [[ -f ./libs/shflags ]] && . ./libs/shflags || eval "$(curl --silent https://git.g3e.fr/H6N/tools/raw/branch/main/libs/shflags)"



    DEFINE_string  'tag'           'v0.0.0'                'Version'               't'
    DEFINE_string  'name'          'totor'                 'Nom de la version'     'n'
    DEFINE_boolean 'create_branch'  false                  'Creation de la branch' 'c'
    DEFINE_boolean 'dryrun'         false                  'Enable dry-run mode'   'd'
    DEFINE_string  'release_path'  './docs/release'        'Release path'          'p'
    DEFINE_string  'doc_path'      './docs/release.md'     'Documentation path'    'u'
    DEFINE_string  'regex_version' 'v[0-9]*.[0-9]*.[0-9]*' 'Version Regex'         'r'
  
    FLAGS "$@" || exit $?
    eval set -- "${FLAGS_ARGV}"


    NAME=${FLAGS_name}
    VERSION=${FLAGS_tag}

    # Creation de la branch
    # . -c -t (version) -n (name)
    if [[ ${FLAGS_create_branch} -eq ${FLAGS_TRUE} ]]; then
        echo "Create Release ${NAME} - ${VERSION}"
        exec_with_dry_run "${FLAGS_dryrun}" "git checkout -b release-${VERSION}" || exit 1
        exec_with_dry_run "${FLAGS_dryrun}" "sed -e 's/NAME VERSION/${NAME} ${VERSION}/' ${FLAGS_release_path}/.template.md > ${FLAGS_release_path}/next_release.md" || return 1
        exit 0
    fi

    NAME=$(cat ${FLAGS_release_path}/next_release.md | head -n 1 | cut -d\  -f 2)
    VERSION=$(cat ${FLAGS_release_path}/next_release.md | head -n 1 | cut -d\  -f 3)
    LOWER_NAME=$(echo ${NAME} | tr '[:upper:]' '[:lower:]')

    # Release standard
    BRANCH=$(git branch --show-current)
    if [[ "${BRANCH}" == "release-${VERSION}" ]]; then
        echo "Release ${NAME} - ${VERSION}"
        echo "Edit README file"
        edit_file "${FLAGS_dryrun}" "sed ${SED_PARAM} 's/^${FLAGS_regex_version}: [A-Z|a-z| ]*$/${VERSION}: ${NAME}/' ./README.md" "./README.md" || return 1
        edit_file "${FLAGS_dryrun}" "sed ${SED_PARAM} '/^## Release list$/a\\
- [${VERSION} ${NAME}](${FLAGS_release_path}/${VERSION}_${LOWER_NAME}.md)' ${FLAGS_doc_path}" "${FLAGS_doc_path}" || return 1
        edit_file "${FLAGS_dryrun}" "mv '${FLAGS_release_path}/next_release.md' '${FLAGS_release_path}/${VERSION}_${LOWER_NAME}.md'" "${FLAGS_release_path}/${VERSION}_${LOWER_NAME}.md" || return 1
        exec_with_dry_run "${FLAGS_dryrun}" "git commit -s -S -m 'release-${VERSION}'" || return 1
        exec_with_dry_run "${FLAGS_dryrun}" "git tag '${VERSION}' -s -m 'Release ${VERSION} ${NAME}'" || return 1
    fi

}

[[ "${BASH_SOURCE[0]}" == "${0}" ]] && (main "$@" || exit 1)
[[ "${BASH_SOURCE[0]}" == "" ]] && (main "$@"  || exit 1)