#!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
#
# There's also a completion function made for aliases to 'fdroid build -p':
#
#   alias fbld='fdroid build -p'
#   complete -F _fdroid_build_project fbld

__package() {
    [[ -d ./metadata ]] || return 0
    files=( metadata/*.txt )
    files=( ${files[@]/metadata\//} )
    files=${files[@]/.txt/}
    COMPREPLY=( $( compgen -W "$files" -- $cur ) )
}

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

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

__vercode() {
    local s p_found p
    s=${#COMP_WORDS[*]}
    p_found=false

    $aliased && p=${COMP_WORDS[1]} || {
        for (( i=1; i <= s; i++ )); do
            $p_found && { p=${COMP_WORDS[$i]}; break;}
            [[ ${COMP_WORDS[$i]} == -p ]] || [[ ${COMP_WORDS[$i]} == --package ]] &&\
                p_found=true
        done
        $p_found || return 0
    }

    COMPREPLY=( $( compgen -W "$( while read line; do
        [[ "$line" == "Build Version:"* ]] && {
            line="${line#*,}"
            printf "${line%%,*} "
        } done < "metadata/${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 -p -c -l -s -t -f"
    lopts="--help --verbose --package --vercode --latest --server --resetserver
 --on-server --force --install --all"
    case "${prev}" in
        -p|--package)
            __package
            return 0;;
        -c|--vercode)
            __vercode
            return 0;;
    esac
    __complete_options
}

__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 -p"
    lopts="--help --verbose --package"
    case "${prev}" in
        -p|--package)
            __package
            return 0;;
    esac
    __complete_options
}

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

__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 -p"
    lopts="--help --verbose --package"
    case "${prev}" in
        -p|--package)
            __package
            return 0;;
    esac
    __complete_options
}

__complete_scanner() {
    opts="-h -v -p"
    lopts="--help --verbose --package --nosvn"
    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
}

_fdroid() {
    local cmd cmds aliased
    cmd=${COMP_WORDS[1]}
    cmds=" build update publish checkupdates import rewritemeta scanner 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 ) )
    }
}

_fdroid_build_project() {
    local cur prev cmds opts lopts aliased
    __fdroid_init
    aliased=true
    (( $COMP_CWORD == 1 )) && prev="-p"

    __complete_build
}

complete -F _fdroid fdroid

return 0