#!/bin/bash

set -euf -o pipefail

scripts=$(dirname $0)
. $scripts/jenkins-helpers.sh
. $scripts/round-robin.sh

convert_args_to_variables "$@"

obligatory_variables rr[ci_config]

# Execution mode: baseline, bisect, jenkins-full
rr[mode]="${rr[mode]-baseline}"

# Set custom revision for one of the projects, and use baseline revisions
# for all other projects.
rr[ci_project]="${rr[ci_project]-tcwg_gnu}"
rr[baseline_branch]="${rr[baseline_branch]-linaro-local/ci/${rr[ci_project]}/${rr[ci_config]}}"
rr[reset_baseline]="${rr[reset_baseline]-false}"
rr[top_artifacts]="${rr[top_artifacts]-$(pwd)/artifacts}"

# {toolchain_name}-{toolchain_ver}-{target}-{bootstrap_config}
IFS=- read -a ci_config <<EOF
${rr[ci_config]}
EOF
rr[target]="native"
bootstrap_config=${cflags-${ci_config[3]}}
rr[components]="gcc"

# Use baseline branches by default.
for c in ${rr[components]}; do
    rr[${c}_branch]=${rr[${c}_branch]-baseline}
    obligatory_variables rr[${c}_url]
done

start_at="${start_at-default}"
finish_at="${finish_at-default}"
verbose="${verbose-true}"
verbose2="${verbose2-false}"

if $verbose2; then set -x; fi

trap "eval \"echo ERROR at \${FUNCNAME[0]}:\${BASH_LINENO[0]}\"" EXIT

# Set start and finish steps for different modes.
default_start_at=""
default_finish_at=""
case "${rr[mode]}" in
    "baseline")
	default_finish_at="update_baseline"
	;;
    "bisect")
	case "$(print_single_updated_component)" in
	    gcc) default_start_at="build_abe-$bootstrap_config" ;;
	    *) assert false ;;
	esac
	default_finish_at="check_regression"
	;;
    "jenkins-full") ;;
esac
if [ x"$start_at" = x"default" ]; then
    start_at="$default_start_at"
fi
if [ x"$finish_at" = x"default" ]; then
    finish_at="$default_finish_at"
fi

run_step_init "$start_at" "$finish_at" "${rr[top_artifacts]}" "$verbose"

# Exit with code 0 if no regression compared to base-artifacts/results.
no_regression_p ()
{
    (
    set -euf -o pipefail

    if ! [ -f base-artifacts/results ]; then
	return 0
    fi
    
    local build_result_ref build_result_new
    build_result_ref=$(tail -n1 base-artifacts/results)
    build_result_new=$(tail -n1 ${rr[top_artifacts]}/results)

    if [ $build_result_new -lt $build_result_ref ]; then
	return 1
    fi

    return 0
    )
}

run_step stop_on_fail -10 reset_artifacts
run_step stop_on_fail x prepare_abe
run_step skip_on_fail -5 build_abe ${bootstrap_config}
run_step reset_on_fail x check_regression
run_step stop_on_fail x update_baseline
run_step stop_on_fail x push_baseline

trap "" EXIT