# Relational pipes

# Copyright © 2020 František Kučera (Frantovo.cz, GlobalCode.info)

#

# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation, version 3 of the License.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program. If not, see <http://www.gnu.org/licenses/>.

_relpipe_in_jack_completion_read_nullbyte() { local IFS=; for v in "$@"; do export "$v"; read -r -d '' "$v"; done }

_relpipe_in_jack_completion_ports() {

	if type relpipe-in-jack &> /dev/null && type relpipe-out-nullbyte &> /dev/null; then

		relpipe-in-jack --list-ports true --list-midi-messages false 2>/dev/null \

			| relpipe-out-nullbyte \

			| while _relpipe_in_jack_completion_read_nullbyte "name" "input" "output" "physical" "terminal" "mine" "midi" "type"; do

				 if [[ "$midi" = "true" && "$output" = "true" && "$mine" = "false" ]]; then echo "$name"; fi; done

	fi

}

_relpipe_in_jack_completion() {

	local w0 w1 w2 w3

	COMPREPLY=()

	w0=${COMP_WORDS[COMP_CWORD]}

	w1=${COMP_WORDS[COMP_CWORD-1]}

	w2=${COMP_WORDS[COMP_CWORD-2]}

	w3=${COMP_WORDS[COMP_CWORD-3]}

	BOOLEAN_VALUES=(

		"true"

		"false"

	)

	  if [[ "$w1" == "--client"                       && "x$w0" == "x" ]];    then COMPREPLY=("'relpipe-in-jack'")

	elif [[ "$w1" == "--port"                         && "x$w0" == "x" ]];    then COMPREPLY=("'midi-in'")

	elif [[ "$w1" == "--connect-to"                                    ]];    then COMPREPLY=($(compgen -W "$(_relpipe_in_jack_completion_ports)" -- "$w0"))

	elif [[ "$w1" == "--required-connections"         && "x$w0" == "x" ]];    then COMPREPLY=("0")

	elif [[ "$w1" == "--list-ports"                                    ]];    then COMPREPLY=($(compgen -W "${BOOLEAN_VALUES[*]}" -- "$w0"))

	elif [[ "$w1" == "--list-midi-messages"                            ]];    then COMPREPLY=($(compgen -W "${BOOLEAN_VALUES[*]}" -- "$w0"))

	else

		OPTIONS=(

			"--client"

			"--port"

			"--connect-to"

			"--required-connections"

			"--list-ports"

			"--list-midi-messages"

		)

		COMPREPLY=($(compgen -W "${OPTIONS[*]}" -- "$w0"))

	fi

}

complete -F _relpipe_in_jack_completion relpipe-in-jack