#!/bin/bash

. "$TF_DIR/include/subtest.sh"
. "$TF_DIR/include/tools.sh"

tf_enum_subtests() {
    echo "no_module"
    echo "empty_file"
    echo "no_declaration"
    echo "deep1"
    echo "deep2"
    echo "deep3"
    echo "deep4"
    echo "version_empty"
    echo "version_spaces"
}

mkwrapper() {
    #
    # Prepare script body
    #
    local modname=$1
    echo '#!/bin/bash'
    echo 'SHELLFU_PATH=test/shellfu'
    echo '. "$(sfpath)" || exit 3'
    echo "shellfu version $modname"
}

mkmodule() {
    #
    # Prepare module body
    #
    test "$name" == no_module && return 0
    {
        test "$name" == empty_file || {
            echo 'foo() {'
            echo '    echo hello'
            echo '}'
        }
        case $name in
            no_declaration)
                :
                ;;
            deep?)
                n=${name#deep}
                echo '#shellfu module-version: 0.1.2'
                while test "$n" -gt 1; do
                    ((n--))
                    echo
                done
                ;;
            version_empty)
                echo '#shellfu module-version:'
                ;;
            version_spaces)
                echo '#shellfu    module-version:    0.1.2   '
                ;;
        esac
    } > "test/shellfu/$name.sh"
}

mkoracle() {
    case $name in
        deep1)          echo 0.1.2 ;;
        deep2)          echo 0.1.2 ;;
        deep3)          echo 0.1.2 ;;
        version_spaces) echo 0.1.2 ;;
    esac > "oracle/$name.stdout"
    case $name in
        no_module)          echo "shellfu: cannot find module: $name" ;;
        empty_file)         echo "shellfu: missing version declaration: test/shellfu/$name.sh" ;;
        no_declaration)     echo "shellfu: missing version declaration: test/shellfu/$name.sh" ;;
        deep4)              echo "shellfu: missing version declaration: test/shellfu/$name.sh" ;;
        version_empty)      echo "shellfu: missing version declaration: test/shellfu/$name.sh" ;;
    esac > "oracle/$name.stderr"
}

mkes() {
    case $name in
        deep1|deep2|deep3|version_spaces) echo 0 ;;
        no_module)                        echo 3 ;;
        *)                                echo 2 ;;
    esac
}

run_wrapper() {
    #
    # Run shellfu in wrapper
    #
    mkwrapper "$name" | bash
}

tf_do_subtest() {
    #
    # Prepare, run and check results of test $1
    #
    local name="$1"
    local o_es
    mkdir -p test/shellfu result oracle
    mkmodule
    mkoracle
    o_es=$(mkes)
    tf_testflt -n "$name" -O "oracle/$name.stdout" -E "oracle/$name.stderr" -S "$o_es" run_wrapper
}

tf_do_subtests