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#! /usr/bin/env sh
set -e

msg() {
    if [ "$#" -ne 0 ]; then
        echo "$@" | tee --append "$__TEST_EVAL_LOG_FILE" >&2
    else
        cat | tee --append "$__TEST_EVAL_LOG_FILE" >&2
    fi
}

__test_eval() {
    tmux="$__TEST_TMUX"
    tpane="$__TEST_TMUX_PANE"
    file="$1"

    awk --file "$__TEST_EVAL_AWK_CLEAN_FILE" "$file" | while read -r cmd args; do
        case "$cmd" in
        "Type")
            msg "Sending keys to application '$args'.."
            "$tmux" send-keys -t "$tpane": "$args"
            ;;
        "Sleep")
            msg "Sleeping for '$args' seconds.."
            sleep "$args"
            ;;
        "Expect" | "ExpectNot")
            msg "Trying to match regex ('$args') for currently visible content.."

            matched=""
            if "$tmux" capture-pane -t "$tpane" -p -S 0 -E - | grep "$args"; then
                matched=true
            else
                matched=false
            fi

            case "$cmd" in
            "Expect")
                if [ "$matched" = true ]; then
                    msg "Regex matched."
                else
                    msg "Failed to find string, matched by regex '$args' on the screen"
                    msg current screen:
                    "$tmux" capture-pane -t "$tpane" -p -S 0 -E - | msg

                    exit 1
                fi
                ;;
            "ExpectNot")
                if [ "$matched" = false ]; then
                    msg "Regex successfully not matched."
                else
                    msg "Found to find string, matched by regex '$args' on the screen. But expected none"
                    msg current screen:
                    "$tmux" capture-pane -t "$tpane" -p -S 0 -E - | msg

                    exit 1
                fi
                ;;
            *)
                msg "Entered unrechable code. This is a bug."
                exit 1
                ;;
            esac
            ;;
        *)
            msg "Unrecognized command: '$cmd'"
            exit 1
            ;;
        esac
    done
}