#!/bin/bash -eu

# This is executed as `sudo -u git /home/git/git.ruby-lang.org/bin/update-default-gem.sh`

# when GitHub ruby/xxx's push webhook is delivered to `cgi-bin/webhook.cgi`.

#

# This supports only updating master branch for now.

# Cancel impact from git hook

unset GIT_DIR

# Cancel impact from LANG=C set by apache2

export LANG=en_US.UTF-8

gem_user="$1"

gem_name="$2"

before="$3"

after="$4"

this_repo="/home/git/git.ruby-lang.org"

ruby_repo="/var/git/ruby.git"

ruby_workdir="/data/git.ruby-lang.org/update-default-gem-${gem_name}"

log_path="/tmp/update-default-gem-${gem_name}.log"

function log() {

echo -e "[$$: $(date "+%Y-%m-%d %H:%M:%S %Z")] $1" >> "$log_path"

}

# Run a given command. If it fails, notify Slack and exits abnormally.

function run() {

}

# Initialize working directory only if missing

if [ ! -d "$ruby_workdir" ]; then

git clone "file://${ruby_repo}" "$ruby_workdir"

fi

log "### start ###"

run git -C "$ruby_workdir" fetch origin master >> "$log_path" 2>&1

run git -C "$ruby_workdir" reset --hard origin/master >> "$log_path" 2>&1

run ruby -C "$ruby_workdir" tool/sync_default_gems.rb "$gem_name" "$before..$after" >> "$log_path" 2>&1

# Pushing ruby_workdir to cgit to make sure all git hooks are performed on sync-ed commits.

SVN_ACCOUNT_NAME=git run git -C "$ruby_workdir" push origin "HEAD:master" >> "$log_path" 2>&1

log "### end ###\n"