#!/bin/bash
#
# fdroid completion support.
#
# 'fdroid' is aliased automatically, but aliases to it are not. For instance,
# to alias 'fd' to 'fdroid' and have competion available:
#
#	alias fd='fdroid'
#	complete -F _fdroid fd
#
# One can use completion on aliased subcommands as follows:
#
#	alias fbuild='fdroid build'
#	complete -F _fdroid_build fbuild

__fdroid_init() {
	COMPREPLY=()
	cur="${COMP_WORDS[COMP_CWORD]}"
	prev="${COMP_WORDS[COMP_CWORD-1]}"

	(( $# >= 1 )) && __complete_${1}
}

__package() {
	files=( metadata/*.txt )
	files=( ${files[@]#metadata/} )
	files=${files[@]%.txt}
	COMPREPLY=( $( compgen -W "$files" -- $cur ) )
}

__apk_package() {
	files=( ${1}/*.apk )
	[ -f "${files[0]}" ] || return

	files=( ${files[@]#*/} )
	files=${files[@]%_*}
	COMPREPLY=( $( compgen -W "$files" -- $cur ) )
}

__apk_vercode() {
	local p
	p=${cur:0:-1}

	files=( ${1}/${p}_*.apk )
	[ -f "${files[0]}" ] || return

	files=( ${files[@]#*_} )
	files=${files[@]%.apk}
	COMPREPLY=( $( compgen -P "${p}:" -W "$files" -- $cur ) )
}

__vercode() {
	local p
	p=${cur:0:-1}

	COMPREPLY=( $( compgen -P "${p}:" -W "$( while read line; do
		if [[ "$line" == "Build Version:"* ]]
		then
			line="${line#*,}"
			printf "${line%%,*} "
		elif [[ "$line" == "Build:"* ]]
		then
			line="${line#*,}"
			printf "${line%%,*} "
		fi
		done < "metadata/${p}.txt" )" -- $cur ) )
}

__complete_options() {
	case "${cur}" in
		--*)
			COMPREPLY=( $( compgen -W "${lopts}" -- $cur ) )
			return 0;;
		*)
			COMPREPLY=( $( compgen -W "${opts} ${lopts}" -- $cur ) )
			return 0;;
	esac
}

__complete_build() {
	opts="-h -v -c -l -s -t -f"
	lopts="--help --verbose --latest --server --resetserver --on-server
 --force --all"
	case "${cur}" in
		*:)
			__vercode
			return 0;;
		*)
			__package
			return 0;;
	esac
	__complete_options
}

__complete_install() {
	opts="-h -v"
	lopts="--help --verbose --all"
	case "${cur}" in
		-*)
			__complete_options
			return 0;;
		*:)
			__apk_vercode repo
			return 0;;
		*)
			__apk_package repo
			return 0;;
	esac
}

__complete_update() {
	opts="-h -c -v -q -b -i -I -e -w"
	lopts="--help --createmeta --verbose --quiet --buildreport --interactive
 --icons --editor --wiki --pretty --clean"
	case "${prev}" in
		-e|--editor)
			_filedir
			return 0;;
	esac
	__complete_options
}

__complete_publish() {
	opts="-h -v"
	lopts="--help --verbose"
	case "${cur}" in
		-*)
			__complete_options
			return 0;;
		*:)
			__apk_vercode unsigned
			return 0;;
		*)
			__apk_package unsigned
			return 0;;
	esac
}

__complete_checkupdates() {
	opts="-h -v"
	lopts="--help --verbose --auto --autoonly --commit --gplay"
	case "${cur}" in
		-*)
			__complete_options
			return 0;;
		*)
			__package
			return 0;;
	esac
}

__complete_import() {
	opts="-h -u -s -r"
	lopts="--help --url --subdir --repo"
	case "${prev}" in
		-u|--url|-r|--repo) return 0;;
		-s|--subdir)
			_filedir
			return 0;;
	esac
	__complete_options
}

__complete_rewritemeta() {
	opts="-h -v"
	lopts="--help --verbose"
	case "${cur}" in
		-*)
			__complete_options
			return 0;;
		*)
			__package
			return 0;;
	esac
}

__complete_scanner() {
	opts="-h -v -p"
	lopts="--help --verbose --package --nosvn"
	case "${prev}" in
		-p|--package)
			__package
			return 0;;
	esac
	__complete_options
}

__complete_verify() {
	opts="-h -v -p"
	lopts="--help --verbose --package"
	case "${prev}" in
		-p|--package)
			__package
			return 0;;
	esac
	__complete_options
}

__complete_stats() {
	opts="-h -v -d"
	lopts="--help --verbose --download"
	__complete_options
}

__complete_server() {
	opts="-h -v"
	lopts="--help --verbose update"
	__complete_options
}

__complete_init() {
	opts="-h -v -d"
	lopts="--help --verbose --keystore --distinguished-name --repo-keyalias"
	__complete_options
}

_fdroid() {
	local cmd cmds aliased
	cmd=${COMP_WORDS[1]}
	cmds=" build init install update publish checkupdates import
 rewritemeta scanner verify stats server "
	aliased=false

	for c in $cmds; do eval "_fdroid_${c} () {
		local cur prev cmds opts lopts
		__fdroid_init ${c};
	}"; done

	[[ $cmds == *\ $cmd\ * ]] && _fdroid_${cmd} || {
		(($COMP_CWORD == 1)) && COMPREPLY=( $( compgen -W "${cmds}" -- $cmd ) )
	}
}

_fd-commit() {
	__package
}

complete -F _fdroid fdroid
complete -F _fd-commit fd-commit

return 0