# 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_ini_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"
	)

	STYLES=(
		"auto"
		"dropped"
		"literal"
		"section-first"
		"standard"
	)

	DIALECTS=(
		"java-properties"
		"java-manifest-mf"
	);

	QUOTING_TYPES=(
		"none"
		"apostrophes"
		"quotes"
	)

	WRITER_OPTIONS=(
		"dialect"
		"comment-separator-for-sections"
		"comment-separator-for-entries"
		"comment-separator-standalone"
		"key-value-separator"
		"escape-backspace"
		"escape-basic"
		"escape-java-properties"
		"quotes-type-for-sections"
		"quotes-type-for-keys"
		"quotes-type-for-values"
		"quotes-pattern-for-sections"
		"quotes-pattern-for-keys"
		"quotes-pattern-for-values"
		"allow-sections"
		"hierarchy-separator"
	);


	if   [[ "$w1" == "--relation"                                            && "x$w0" == "x" ]];    then COMPREPLY=("''")
	elif [[ "$w1" == "--style"                                                                ]];    then COMPREPLY=($(compgen -W "${STYLES[*]}" -- "$w0"))
	elif [[ "$w1" == "--writer-option"                                                        ]];    then COMPREPLY=($(compgen -W "${WRITER_OPTIONS[*]}" -- "$w0"))
	elif [[ "$w2" == "--writer-option" && "$w1" == "dialect"                                  ]];    then COMPREPLY=($(compgen -W "${DIALECTS[*]}" -- "$w0"))
	elif [[ "$w2" == "--writer-option" && "$w1" == "comment-separator-for-sections"           ]];    then COMPREPLY=("' ; '")
	elif [[ "$w2" == "--writer-option" && "$w1" == "comment-separator-for-entries"            ]];    then COMPREPLY=("' ; '")
	elif [[ "$w2" == "--writer-option" && "$w1" == "comment-separator-standalone"             ]];    then COMPREPLY=("'; '")
	elif [[ "$w2" == "--writer-option" && "$w1" == "key-value-separator"                      ]];    then COMPREPLY=("' = '")
	elif [[ "$w2" == "--writer-option" && "$w1" == "escape-backspace"                         ]];    then COMPREPLY=($(compgen -W "${BOOLEAN_VALUES[*]}" -- "$w0"))
	elif [[ "$w2" == "--writer-option" && "$w1" == "escape-basic"                             ]];    then COMPREPLY=($(compgen -W "${BOOLEAN_VALUES[*]}" -- "$w0"))
	elif [[ "$w2" == "--writer-option" && "$w1" == "escape-java-properties"                   ]];    then COMPREPLY=($(compgen -W "${BOOLEAN_VALUES[*]}" -- "$w0"))
	elif [[ "$w2" == "--writer-option" && "$w1" == "quotes-type-for-sections"                 ]];    then COMPREPLY=($(compgen -W "${QUOTING_TYPES[*]}" -- "$w0"))
	elif [[ "$w2" == "--writer-option" && "$w1" == "quotes-type-for-keys"                     ]];    then COMPREPLY=($(compgen -W "${QUOTING_TYPES[*]}" -- "$w0"))
	elif [[ "$w2" == "--writer-option" && "$w1" == "quotes-type-for-values"                   ]];    then COMPREPLY=($(compgen -W "${QUOTING_TYPES[*]}" -- "$w0"))
	elif [[ "$w2" == "--writer-option" && "$w1" == "allow-sections"                           ]];    then COMPREPLY=($(compgen -W "${BOOLEAN_VALUES[*]}" -- "$w0"))
	elif [[ "$w2" == "--writer-option" && "$w1" == "hierarchy-separator"                      ]];    then COMPREPLY=("'/'")
	elif [[ "$w2" == "--writer-option"                                       && "x$w0" == "x" ]];    then COMPREPLY=("''")

	else
		OPTIONS=(
			"--writer-option"
			"--relation"
			"--style"
		)
		COMPREPLY=($(compgen -W "${OPTIONS[*]}" -- "$w0"))
	fi
}

complete -F _relpipe_out_ini_completion relpipe-out-ini