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#!/bin/sh
# tool/travis-ci-kick -- kick off a build at Travis CI
# Richard Brooksby, Ravenbrook Limited, 2023-01-15
#
# Copyright (c) 2023 Ravenbrook Limited. See end of file for license.
#
# This shell script uses the Travis CI REST API V3 to kick off a build
# on the Travis CI servers.  The build will be run using the Travis CI
# configuration at the commit (in .travis.yml).
#
# See also tool/github-ci-kick.
#
# To get a token for this script, visit
# <https://app.travis-ci.com/account/preferences> and copy your token
# from "API authentication".
#
# TODO: Extend this script to take MPS platform codes and kick off the
# appropriate build, overriding the (possibly nonexistent) Travis Ci
# config.  See [TRAVIS].
#
# TODO: Convert to Python for use from Windows?
#
# TODO: Make -t optional by getting AUTH-TOKEN from somewhere (secure).

set -e # exit on error

# defaults
branch="master"
org="Ravenbrook"
repo="mps"

usage() {
    echo 1>&2 "Usage: ${0} [-o ORG] [-r REPO] [-b BRANCH] [-c COMMIT-SHA] -t AUTH-TOKEN"
    exit 1
}    

while getopts o:r:b:c:t: flag; do
    case "${flag}" in
	c) commit="${OPTARG}";;
	b) branch="${OPTARG}";;
	o) org="${OPTARG}";;
	r) repo="${OPTARG}";;
	t) auth="${OPTARG}";;
	*) usage;;
    esac
done

test -z "${auth}" && usage

# If the field "sha" is omitted, Travis CI builds the tip of the
# branch [TRAVIS].
if test -z "${commit}"; then
    cat <<-EOF
{
  "request": {
    "branch":"${branch}"
  }
}
EOF
else
    cat <<EOF
{
  "request": {
    "branch": "${branch}",
    "sha": "${commit}"
  }
}
EOF
fi |
curl --silent --show-error \
     --request POST --data @- \
     --header "Content-Type: application/json" \
     --header "Accept: application/json" \
     --header "Travis-API-Version: 3" \
     --header "Authorization: token ${auth}" \
     "https://api.travis-ci.com/repo/${org}%2F${repo}/requests"


# A. REFERENCES
#
# [Travis] "Triggering builds with API V3"; <https://github.com/travis-ci/docs-travis-ci-com/blob/859062b7cdcab69fc9691924ad6a031cf0819cf8/user/triggering-builds.md>.
#
#
# B. DOCUMENT HISTORY
#
# 2023-01-15 RB Created.
#
# C. COPYRIGHT AND LICENSE
#
# Copyright (C) 2023 Ravenbrook Limited <https://www.ravenbrook.com/>.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the
#    distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
# IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
#
# $Id$