# Relational pipes
# Copyright © 2019 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_awk_completion() {
	local w0 w1 w2

	COMPREPLY=()
	w0=${COMP_WORDS[COMP_CWORD]}
	w1=${COMP_WORDS[COMP_CWORD-1]}
	w2=${COMP_WORDS[COMP_CWORD-2]}

	DATA_TYPE=(
		"string"
		"integer"
		"boolean"
	)

	if   [[ "$w1" == "--relation"          && "x$w0" == "x" ]];    then COMPREPLY=("'.*'")
	elif [[ "$w1" == "--before-records"    && "x$w0" == "x" ]];    then COMPREPLY=("''")
	elif [[ "$w1" == "--after-records"     && "x$w0" == "x" ]];    then COMPREPLY=("''")
	elif [[ "$w1" == "--output-attribute"  && "x$w0" == "x" ]];    then COMPREPLY=("''")
	elif [[ "$w2" == "--output-attribute"                   ]];    then COMPREPLY=($(compgen -W "${DATA_TYPE[*]}" -- "$w0"))
	elif [[ "$w1" == "--define"            && "x$w0" == "x" ]];    then COMPREPLY=("''")
	elif [[ "$w2" == "--define"                             ]];    then COMPREPLY=($(compgen -W "${DATA_TYPE[*]}" -- "$w0"))
	elif [[ "$w3" == "--define"            && "x$w0" == "x" ]];    then COMPREPLY=("''")
	elif [[ "$w1" == "--for-each"          && "x$w0" == "x" ]];    then COMPREPLY=("'(a == \"abc\") { a = \"X\"; record(); }'")
	elif [[ "$w1" == "--where"             && "x$w0" == "x" ]];    then COMPREPLY=("'a == \"abc\" || b == 123'")
	else
		OPTIONS=(
			"--relation"
			"--output-attribute"
			"--input-attributes-append"
			"--input-attributes-prepend"
			"--debug-variable-mapping"
			"--before-records"
			"--after-records"
			"--for-each"
			"--where"
			"--drop"
			"--define"
		)
		COMPREPLY=($(compgen -W "${OPTIONS[*]}" -- "$w0"))
	fi
}

complete -F _relpipe_tr_awk_completion relpipe-tr-awk
complete -F _relpipe_tr_awk_completion relpipe-in-awk