# 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_out_jack_completion_ports() {
	# TODO: simpler and faster implementation in relpipe-out-jack or relpipe-in-jack C++ code
	jack_lsp -tp 2>/dev/null \
		| tr -d \\t \
		| tr \\n \\0 \
		| relpipe-in-cli \
			--relation "jack_midi_port" \
			--attribute "name" string \
			--attribute "properties" string \
			--attribute "type" string \
			--records-on-stdin true \
		| relpipe-tr-grep '.*' 'properties' 'input' \
		| relpipe-tr-grep '.*' 'type' 'midi' \
		| relpipe-tr-cut '.*' 'name' \
		| relpipe-out-nullbyte \
		| tr \\0 \\n
}

_relpipe_out_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]}

	  if [[ "$w1" == "--jack-client-name"             && "x$w0" == "x" ]];    then COMPREPLY=("'relpipe-out-jack'")
	elif [[ "$w1" == "--jack-connect-to-port"                          ]];    then COMPREPLY=($(compgen -W "$(_relpipe_out_jack_completion_ports)" -- "$w0"))
	elif [[ "$w1" == "--required-jack-connections"    && "x$w0" == "x" ]];    then COMPREPLY=("1")
	else
		OPTIONS=(
			"--jack-client-name"
			"--jack-connect-to-port"
			"--required-jack-connections"
		)
		COMPREPLY=($(compgen -W "${OPTIONS[*]}" -- "$w0"))
	fi
}

complete -F _relpipe_out_jack_completion relpipe-out-jack