File: git-pull-request

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git-extras 7.4.0-1
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#!/usr/bin/env bash

#
# Echo <msg> and exit
#

abort() {
  echo >&2 "$@"
  exit 1
}

#
# Produce json with <title>, <body>, <head> and <base>
#

json() {
  local title="${1//\"/\\\"}"
  local body="${2//\"/\\\"}"
  local head="${3//\"/\\\"}"
  local base="${4//\"/\\\"}"
  cat <<EOF
{
  "title": "$title",
  "body": "$body",
  "head": "$head",
  "base": "$base"
}
EOF
}

# personal access token
# config name is github-personal-access-token '_' is not allowed in git config

github_personal_access_token=$(git config --default "$GITHUB_TOKEN" git-extras.github-personal-access-token)

test -z "$github_personal_access_token" && abort "GITHUB_TOKEN or git config git-extras.github-personal-access-token required"

# branch

branch=${1-$(git symbolic-ref HEAD | sed 's/refs\/heads\///')}
remote=$(git config branch."$branch".remote)
if [ -z "$remote" ]; then
    echo 'no upstream found, push to origin as default'
    remote="origin"
fi
[ "$remote" = "." ] && abort "the upstream should be a remote branch."

# make sure it's pushed

git push "$remote" "$branch" || abort "failed to push $branch"

remote_url=$(git config remote."$remote".url)
if [[ "$remote_url" == git@* ]]; then
    project=${remote_url##*:}
else
    project=${remote_url#https://*/}
fi
project=${project%.git}

# prompt

echo
echo "  create pull-request for $project '$branch'"
echo
printf "  title: " && read -r title
printf "  body: " && read -r body
printf "  base [%s]: " "$(git_extra_default_branch)" && read -r base
printf "  GitHub two-factor authentication code (leave blank if not set up): " && read -r mfa_code
echo

# create pull request

if [ -z "$base" ]
then
    base="$(git_extra_default_branch)"
fi

body=$(json "$title" "$body" "$branch" "$base")

curl \
		-X POST \
		-H "Accept: application/vnd.github.v3+json" \
		-H "Authorization: token $github_personal_access_token" \
		-H "X-GitHub-OTP: $mfa_code" \
    "https://api.github.com/repos/$project/pulls" -d "$body"