#!/usr/bin/env bash
#
# This script is sourced from here:
# https://gitlab.freedesktop.org/whot/meson-helper
#
# SPDX-License-Identifier: MIT
#
# Usage:
#     meson-build.sh
#       [-C directory]			... change to directory before doing anything
#	[--skip-build]			... skip the compilation
#	[--skip-test|--run-test]	... skip or explicitly run meson test
#	[--skip-dist|--run-dist]	... skip or explicitly run meson dist
#	[--skip-install|--run-install]	... skip or explicitly run meson install
#
#
# Environment variables:
#    If the .meson_environment file exists in $PWD, it is sourced at the start of the script.
#    This file is sourced before the -C directory option takes effect.
#
#    MESON_BUILDDIR
#    MESON_ARGS, MESON_EXTRA_ARGS:
#	Args passed to meson setup. The MESON_EXTRA_ARGS exist to make it easier for
#	callers to have a default set of arguments and a variable set of arguments.
#    MESON_TEST_ARGS, MESON_DIST_ARGS, MESON_INSTALL_ARGS:
#	Args passed directly to the respective meson command. If these args are set it implies
#	--run-$cmd. Use --skip-$cmd to skip.
#    NINJA_ARGS - args passed to ninja via meson compile

set -x
if [[ -f .meson_environment ]]; then
	. .meson_environment
fi

# If test args are set, we assume we want to run the tests
MESON_RUN_TEST="$MESON_TEST_ARGS"
MESON_RUN_INSTALL="$MESON_INSTALL_ARGS"
MESON_RUN_DIST="$MESON_DIST_ARGS"

while [[ $# -gt 0 ]]; do
	case $1 in
		-C)
			directory=$2
			shift 2
			pushd "$directory" || exit 1
			;;
		--skip-setup)
			shift
			MESON_SKIP_SETUP="1"
			;;
		--skip-build)
			shift
			MESON_SKIP_BUILD="1"
			;;
		--skip-test)
			shift
			MESON_RUN_TEST=""
			;;
		--run-test)
			shift
			MESON_RUN_TEST="1"
			;;
		--skip-dist)
			shift
			MESON_RUN_DIST=""
			;;
		--run-dist)
			shift
			MESON_RUN_DIST="1"
			;;
		--skip-install)
			shift
			MESON_RUN_INSTALL=""
			;;
		--run-install)
			shift
			MESON_RUN_INSTALL="1"
			;;
		*)
			echo "Unknow commandline argument $1"
			exit 1
			;;
	esac
done

if [[ -z "$MESON_BUILDDIR" ]]; then
	echo "\$MESON_BUILDDIR undefined."
	exit 1
fi

# emulate a few gitlab variables to make it easier to
# run and debug locally.
if [[ -z "$CI_JOB_ID" ]] || [[ -z "$CI_JOB_NAME" ]]; then
	echo "Missing \$CI_JOB_ID or \$CI_JOB_NAME".
	CI_PROJECT_NAME=$(basename "$PWD")
	CI_JOB_ID=$(date +%s)
	CI_JOB_NAME="$CI_PROJECT_NAME-job-local"
	echo "Simulating gitlab environment: "
	echo " CI_JOB_ID=$CI_JOB_ID"
	echo " CI_JOB_NAME=$CI_JOB_NAME"
fi

if [[ -n "$FDO_CI_CONCURRENT" ]]; then
	jobcount="-j$FDO_CI_CONCURRENT"
	export MESON_TESTTHREADS="$FDO_CI_CONCURRENT"
fi

if [[ -n "$MESON_EXTRA_ARGS" ]]; then
	MESON_ARGS="$MESON_ARGS $MESON_EXTRA_ARGS"
fi

echo "*************************************************"
echo "builddir: $MESON_BUILDDIR"
echo "meson args: $MESON_ARGS"
echo "ninja args: $NINJA_ARGS"
echo "meson test args: $MESON_TEST_ARGS"
echo "job count: ${jobcount-0}"
echo "*************************************************"

set -e

if [[ -z "$MESON_SKIP_SETUP" ]]; then
	rm -rf "$MESON_BUILDDIR"
	meson setup "$MESON_BUILDDIR" $MESON_ARGS
fi
meson configure "$MESON_BUILDDIR"

if [[ -z "$MESON_SKIP_BUILD" ]]; then
	if [[ -n "$NINJA_ARGS" ]]; then
		ninja_args="--ninja-args $NINJA_ARGS"
	fi
	meson compile -v -C "$MESON_BUILDDIR" $jobcount $ninja_args
fi

if [[ -n "$MESON_RUN_TEST" ]]; then
	meson test -C "$MESON_BUILDDIR" --print-errorlogs $MESON_TEST_ARGS
fi

if [[ -n "$MESON_RUN_INSTALL" ]]; then
	meson install --no-rebuild  -C "$MESON_BUILDDIR" $MESON_INSTALL_ARGS
fi

if [[ -n "$MESON_RUN_DIST" ]]; then
	meson dist -C "$MESON_BUILDDIR" $MESON_DIST_ARGS
fi