makerelease

#!/bin/bash

# Usage: makerelease (tag|update) <project>
#
# Script for creating tags in a standard format interactively.

set -e
source "$(git rev-parse --show-toplevel)/DevOps/frankfurter/scripts/tools/env"

function get_shepherd_version {
  bash -c "cd '$piecentral/shepherd' && pipenv run python3 Shepherd.py --version"
}

function get_runtime_version {
  bash -c "cd '$piecentral/runtime' && pipenv run python3 runtime.py --version"
}

function get_dawn_version {
  cat "${piecentral}/dawn/package.json" | python -c 'import sys, json; print(json.load(sys.stdin)["version"])'
}

function set_runtime_version {
  bash -c "cd '$piecentral/runtime' && sed -i -e 's/^__version__\s*=\s*.*$/__version__ = ($1, $2, $3)/g' runtimeUtil.py"
}

function set_shepherd_version {
  bash -c "cd '$piecentral/shepherd' && sed -i -e 's/^__version__\s*=\s*.*$/__version__ = ($1, $2, $3)/g' Shepherd.py"
}

function set_dawn_version {
  bash -c "cd '$piecentral/dawn' && sed -i -e 's/\"version\":\s*\".*\",$/\"version\": \"$1.$2.$3\",/g' package.json"
}

cmd="$1"
project="$2"
usage="Usage: $0 (update|tag|help) [options]

Commands:
  update <project>  Interactively increment a version number according to
                    semantic versioning. The updated version number is written
                    back to the file where the version number for a project is
                    stored. You must add and commit this change before merging
                    a feature branch.
  tag <project>     Use the project's version number to tag the current commit
                    with a standard name. You should use this after a feature
                    branch has been merged into master to trigger a release
                    from Travis. You will need to push the newly generated tag
                    yourself.
  help              Display this help message."
if [ "$cmd" != 'tag' ] && [ "$cmd" != 'update' ] || [ ! "$project" ] || [ "$cmd" = 'help' ]; then
  echo "$usage"
  exit 1
elif [ ! -d "$project" ]; then
  echo -e $red"Error: '$1' is not a project."$clear
  exit 2
fi

semver_pattern='[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+'

if [ "$cmd" = 'tag' ]; then
  if [ $(git symbolic-ref --short HEAD) != "master" ]; then
    echo -e $yellow"Warning: you are not on the 'master' branch."$clear
  fi
  now=$(date +%Y-%m-%dT%H%M%S)
  tag="$project/$(get_"$project"_version)-$now"
  git tag "$tag"
  echo -e $green"Created tag: $tag"$clear
else
  last_release=$(get_"$project"_version)
  echo -e $blue"Last release of '$project' was: $last_release"$clear

  last_number_pattern='[[:digit:]]+$'
  patch=$(echo "$last_release" | grep -Eo "$last_number_pattern")
  minor=$(echo "$last_release" | grep -Eo "^[[:digit:]]+\.[[:digit:]]+" | grep -Eo "$last_number_pattern")
  major=$(echo "$last_release" | grep -Eo "^[[:digit:]]+")

  if [ $(prompt "Increment patch version number?") ]; then
    patch=$((patch + 1))
  elif [ $(prompt "Increment minor version number?") ]; then
    minor=$((minor + 1))
    patch='0'
  elif [ $(prompt "Increment major version number?") ]; then
    echo -e $yellow"Remember that major version changes are reserved for backwards-incompatible changes."$clear
    major=$((major + 1))
    minor='0'
    patch='0'
  fi

  echo "Next release: $major.$minor.$patch"
  if [ $(prompt "Confirm release number?") ]; then
    set_"$project"_version "$major" "$minor" "$patch"
  else
    echo -e $red"Next release number rejected. Aborting."$clear
  fi
fi