# Relational pipes

# Copyright © 2021 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_tr_grep_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"

	)

	ENTITY_VALUES=(

		"relation"

		"attribute"

		"value"

	)

	if   [[ "$w1" == "--relation"                      && "x$w0" == "x" ]];    then COMPREPLY=("'.*'")

	elif [[ "$w1" == "--attribute"                     && "x$w0" == "x" ]];    then COMPREPLY=("'.*'")

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

	elif [[ "$w1" == "--case-sensitive"                                 ]];    then COMPREPLY=($(compgen -W "${ENTITY_VALUES[*]}"  -- "$w0"))

	elif [[ "$w2" == "--case-sensitive"                                 ]];    then COMPREPLY=($(compgen -W "${BOOLEAN_VALUES[*]}" -- "$w0"))

	elif [[ "$w1" == "--invert-match"                                   ]];    then COMPREPLY=($(compgen -W "${ENTITY_VALUES[*]}"  -- "$w0"))

	elif [[ "$w2" == "--invert-match"                                   ]];    then COMPREPLY=($(compgen -W "${BOOLEAN_VALUES[*]}" -- "$w0"))

	else

		OPTIONS=(

			"--relation"

			"--attribute"

			"--value"

			"--case-sensitive"

			"--invert-match"

		)

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

	fi

}

complete -F _relpipe_tr_grep_completion relpipe-tr-grep