#!/usr/bin/env bash

script=$(basename -- "$0")

temp_dir=$(mktemp -d) && trap "rm -rf ${temp_dir}" EXIT || exit 255

usage() {

echo "usage: $script [OPTIONS]" >&2

}

help() {

usage

cat <<EOF >&2

Helper script for performing a release of Streamlink.

Options can be specified on the command line, or the user will

be prompted to enter the required options.

General options:

-h, --help

Show this help message and exit.

-u, --upstream REPO

Set the upstream repo (streamlink/streamlink)

-o, --origin REPO

Set the users fork of the upstream repo (gituser/streamlink)

-v, --version VERSION

Set the new version number.

EOF

}

test_getopt() {

getopt --test > /dev/null

if [[ $? -ne 4 ]]; then

echo "An updated version of getopt is required (gnu-getopt)." >&2

return 1

fi

}

test_available() {

which $1 > /dev/null

return $?

}

columns() {

cols=$(tput cols)

echo $((cols > 80 ? 80 : cols))

}

error() {

cols=$(columns)

tput hpa $((cols - 6))

echo -e "\e[39m[\e[31mFAIL\e[39m]"

}

success() {

cols=$(columns)

tput hpa $((cols - 4))

echo -e "\e[39m[\e[32mOK\e[39m]"

}

changelog() {

temp_changes=$(mktemp) && trap "rm -rf ${temp_changes}" EXIT || exit 255

date=$(date -u +"%Y-%m-%d")

shortlog=$(git shortlog --email --no-merges --pretty=%s ${1}..)

echo -e "\n## streamlink $2 ($date)\n\n!! WRITE RELEASE NOTES HERE !!\n\n\`\`\`text\n${shortlog}\n\`\`\`\n" > "${temp_changes}"

sed -i "/# Changelog/ r ${temp_changes}" "CHANGELOG.md"

return $?

}

check_changelog() {

grep "WRITE RELEASE NOTES HERE" "CHANGELOG.md" >/dev/null

if [[ "$?" == "0" ]]; then

echo "fatal: CHANGELOG.md contains the template text" >&2

return 1

fi

return 0

}

action() {

local msg temp_log

msg=$1

temp_log=$(mktemp) && trap "rm -rf ${temp_log}" EXIT || exit 255

echo -n "$msg "

shift

"$@" 2> "${temp_log}" 1>&2 && success || (error; cat "${temp_log}"; exit 1)

return $?

}

test_getopt || exit 255

# setup getopts

OPTIONS=hu:o:v:

LONGOPTIONS=help,upstream:,origin:,version:

PARSED=$(getopt --options $OPTIONS --longoptions=$LONGOPTIONS --name "$0" -- "$@")

if [[ $? -ne 0 ]]; then

usage

exit 2

fi

# read getopt’s output this way to handle the quoting right:

eval set -- "$PARSED"

# now enjoy the options in order and nicely split until we see --

while true; do

case "$1" in

-h|--help)

help

exit 0

;;

-u|--upstream)

upstream="$2"

shift 2

;;

-o|--origin)

origin="$2"

shift 2

;;

-v|--version)

version="$2"

shift 2

;;

--)

shift

break

;;

*)

echo "Programming error"

exit 3

;;

esac

done

echo -e "Streamlink Release Script\n"

action "User has git installed" test_available git

if [ -z "$upstream" ]; then

echo -n "Upstream repo [streamlink/streamlink]: "

read upstream

if [ -z "$upstream" ]; then

upstream="streamlink/streamlink"

fi

fi

if [ -z "$origin" ]; then

echo -n "Fork repo [$USER/streamlink]: "

read origin

if [ -z "$origin" ]; then

origin="$USER/streamlink"

fi

fi

while [ -z "$version" ]; do

echo -n "New version number: "

read version

done

action "Cloning ${upstream}..." git clone -q "ssh://[email protected]/${upstream}.git" "${temp_dir}"

pushd "${temp_dir}" >/dev/null

dirty_version=$(python setup.py --version)

current_version="${dirty_version%%+*}"

action "Adding ${origin} as origin" git remote set-url origin "[email protected]:${origin}.git" || exit 1

action "Adding release-${version} branch" git checkout -b "release-${version}" || exit 1

action "Updating CHANGELOG.md (${current_version}..HEAD}" changelog "${current_version}" "${version}" || exit 1

# launch editor to edit the file

"${VISUAL:-"${EDITOR:-vi}"}" "CHANGELOG.md"

action "Check CHANGELOG.md was updated" check_changelog || exit 1

action "Commit CHANGELOG.md to release-${version} branch" git commit CHANGELOG.md -m "Release ${version}" || exit 1

action "Push release-${version} branch to ${origin}" git push origin "release-${version}" || exit 1

popd >/dev/null