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#!/usr/bin/env bash
set -e
set -o pipefail

main() {
    local template="${1}"

    preamble "${template}"
    gen_tests
}

preamble() {
    local template="${1}"

    cat - "${template}" <<-_EOF_
	# This file is generated; do not edit!
	# Builds appear on https://gitlab.com/buildroot.org/buildroot/pipelines

	image: ${CI_JOB_IMAGE}

_EOF_
}

gen_tests() {
    local -a basics defconfigs runtimes
    local do_basics do_defconfigs do_runtime
    local defconfigs_ext cfg tst

    basics=( DEVELOPERS flake8 package )

    defconfigs=( $(cd configs; LC_ALL=C ls -1 *_defconfig) )

    runtimes=( $(./support/testing/run-tests -l 2>&1 \
                 | sed -r -e '/^test_run \((.*)\).*/!d; s//\1/' \
                 | LC_ALL=C sort)
             )

    if [ -n "${CI_COMMIT_TAG}" ]; then
        do_basics=true
        do_defconfigs=base
        do_runtime=true
    elif [ "${CI_PIPELINE_SOURCE}" = "trigger" ]; then
        case "${BR_SCHEDULE_JOBS}" in
          (basic)
            do_basics=true
            do_defconfigs=check
            defconfigs_ext=_check
            ;;
          (defconfig)
            do_defconfigs=base
            ;;
          (runtime)
            do_runtime=true
            ;;
        esac
    else
        case "${CI_COMMIT_REF_NAME}" in
          (*-basics)
            do_basics=true
            do_defconfigs=check
            defconfigs_ext=_check
            ;;
          (*-defconfigs)
            do_defconfigs=base
            ;;
          (*-*_defconfig)
            defconfigs=( "${CI_COMMIT_REF_NAME##*-}" )
            do_defconfigs=base
            ;;
          (*-runtime-tests)
            do_runtime=true
            ;;
          (*-tests.*)
            runtimes=( "${CI_COMMIT_REF_NAME##*-}" )
            do_runtime=true
            ;;
        esac
    fi

    # If nothing else, at least do the basics to generate a valid pipeline
    if [    -z "${do_defconfigs}" \
         -a -z "${do_runtime}" \
       ]
    then
        do_basics=true
    fi

    if ${do_basics:-false}; then
        for tst in "${basics[@]}"; do
            printf 'check-%s: { extends: .check-%s_base }\n' "${tst}" "${tst}"
        done
    fi

    if [ -n "${do_defconfigs}" ]; then
        for cfg in "${defconfigs[@]}"; do
            printf '%s%s: { extends: .defconfig_%s }\n' \
                   "${cfg}" "${defconfigs_ext}" "${do_defconfigs}"
        done
    fi

    if ${do_runtime:-false}; then
        printf '%s: { extends: .runtime_test_base }\n' "${runtimes[@]}"
    fi
}

main "${@}"