149 lines
3.0 KiB
Bash
Executable File
149 lines
3.0 KiB
Bash
Executable File
#!/bin/bash
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set -eof pipefail
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trap cleanup EXIT
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fatal() {
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echo "FATAL: $@" >&2
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exit 1
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}
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warn() {
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echo "$@"
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}
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confirm() {
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read -p "$1 (type 'yes' to continue) " r
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if [[ $r != yes ]]; then
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exit 3
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fi
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}
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load_config() {
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[[ -f merge-pr.conf ]] && . merge-pr.conf
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: ${OWNER:=status-im}
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: ${REPO:=status-github-bot}
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: ${REMOTE:=origin}
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: ${BRANCH:=master}
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}
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check_pr_prereq() {
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if ! command -v jq >/dev/null; then
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fatal "jq(1) is not found, PR cannot be queried."
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fi
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if ! command -v curl >/dev/null; then
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fatal "curl(1) is not found, PR cannot be queried."
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fi
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}
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GH_URL_BASE="https://api.github.com"
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get_pr_info() {
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echo '[ Reading PR info ]'
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local pr=$1
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local pr_info_url="$GH_URL_BASE/repos/${OWNER}/${REPO}/pulls/$pr"
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set +e
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local pr_info
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pr_info=$(curl -fsS "$pr_info_url")
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if [ $? -ne 0 ]; then
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fatal "Unable to get PR info from $pr_info_url"
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fi
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set -e
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if [[ $(echo "$pr_info" | jq -r .state) == closed ]]; then
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fatal "PR $pr is closed, will not merge"
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fi
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if [[ ($(echo "$pr_info" | jq -r .maintainer_can_modify) == true) ||\
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($(echo "$pr_info" | jq -r .author_association) == MEMBER) ||\
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($(echo "$pr_info" | jq -r .author_association) == OWNER)]]; then
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RW_PR_REPO=1
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else
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warn "PR does not allow 'edits from maintainers', so it will be kept open"
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fi
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PR_URL=$(echo "$pr_info" | jq -r .head.repo.ssh_url)
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PR_REMOTE_NAME=pr-$pr
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PR_BRANCH=$(echo "$pr_info" | jq -r .head.ref)
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PR_LOCAL_BRANCH=pr-$pr
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}
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fetch_pr() {
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echo '[ Fetching PR ]'
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git remote add $PR_REMOTE_NAME $PR_URL
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git fetch $PR_REMOTE_NAME $PR_BRANCH
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}
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refresh_base_branch() {
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git fetch $REMOTE $BRANCH
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}
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rebase_pr() {
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git checkout -B $PR_LOCAL_BRANCH $PR_REMOTE_NAME/$PR_BRANCH
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git rebase $BRANCH
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}
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check_is_pr_single_commit() {
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if [[ $(git rev-list $BRANCH..$PR_LOCAL_BRANCH | wc -l) -ne 1 ]] ;then
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confirm "PR has multiple commits, continue merging without squashing them?"
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fi
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}
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confirm_pr() {
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git log -p $BRANCH..$PR_LOCAL_BRANCH
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confirm "Do you like this PR?"
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}
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sign_pr() {
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git commit --amend --gpg-sign --signoff
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}
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verify_pr() {
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git show --show-signature $PR_LOCAL_BRANCH
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confirm "Is the signature on the commit correct?"
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}
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merge_pr() {
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# If PR is specified and can be pushed into, do it to mark PR as closed
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if [[ -n $RW_PR_REPO ]]; then
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git push -f $PR_REMOTE_NAME $PR_LOCAL_BRANCH:$PR_BRANCH
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fi
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git checkout $BRANCH
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git merge --ff-only $PR_LOCAL_BRANCH
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git push $REMOTE $BRANCH
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}
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cleanup() {
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if [[ -z $DEBUG ]]; then
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git checkout -q $BRANCH
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git branch -q -D $PR_LOCAL_BRANCH 2>/dev/null || :
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git remote remove $PR_REMOTE_NAME 2>/dev/null || :
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fi
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}
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run() {
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if [[ $# -ne 1 ]] ; then
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cat <<EOF >&2
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Requirements:
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jq
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curl
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Usage:
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./merge-pr.sh <PR-ID>
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EOF
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exit 2
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fi
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load_config
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check_pr_prereq
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get_pr_info "$@"
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cleanup
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fetch_pr
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refresh_base_branch
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rebase_pr
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check_is_pr_single_commit
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confirm_pr
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sign_pr
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verify_pr
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merge_pr
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}
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run "$@"
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