#!/bin/sh
#-------------------------------------------------------------------------+
# Copyright (C) 2015 Matt Churchyard (churchers@gmail.com)
# All rights reserved
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted providing that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

# cmd: vm ...
#
# process the vm command line to see which function is requested
#
# @param string _cmd the command right after 'vm '
#
__parse_cmd(){
    local _cmd="$1"
    shift

    case "${_cmd}" in
        init)      __setup
                   __switch_init ;;
        switch)    __parse_switch_cmd "$@" ;;
        image)     __zfs_parse_image_cmd "$@" ;;
        list)      __vm_list ;;
        info)      __vm_info "$@" ;;
        create)    __vm_create "$@" ;;
        destroy)   __vm_destroy "$@" ;;
        rename)    __vm_rename "$@" ;;
        install)   __vm_install "$@" ;;
        start)     __vm_start "$1" ;;
        stop)      __vm_stop "$@" ;;
        add)       __vm_add "$@" ;;
        reset)     __vm_reset "$@" ;;
        poweroff)  __vm_poweroff "$@" ;;
        startall)  __vm_startall ;;
        stopall)   __vm_stopall ;;
        console)   __vm_console "$@" ;;
        _run)      __vm_run "$@" ;;
        iso)       __vm_iso "$@" ;;
        configure) __vm_configure "$@" ;;
        passthru)  __vm_passthru ;;
        clone)     __zfs_clone "$@" ;;
        snapshot)  __zfs_snapshot "$@" ;;
        rollback)  __zfs_rollback "$@" ;;
        version)   __version ;;
        *)         __usage ;;
    esac
}

# cmd: vm switch ...
#
# parse switch command
# we've already shifted once, so $1 is the switch function
#
# @param string _cmd the command right after 'vm switch '
#
__parse_switch_cmd(){
    local _cmd="$1"
    shift

    case "${_cmd}" in
        create)  __switch_create "$@" ;;
        list)    __switch_list ;;
        info)    __vm_info_switch "$@" ;;
        destroy) __switch_remove "$@" ;;
        import)  __switch_import "$@" ;;
        add)     __switch_add_member "$@" ;;
        remove)  __switch_remove_member "$@" ;;
        vlan)    __switch_vlan "$@" ;;
        nat)     __switch_nat "$@" ;;
        *)       __usage ;;
    esac
}

# look for any arguments to the vm command
# -f - run vm-bhyve/loader/bhyve in the foreground
#
# the argument string without any options is put into 
# VM_COMMAND for the main command parser to handle
#
# @modifies VM_COMMAND VM_FOREGROUND vm_dir
#
__parse_cmd_args(){
    local _opt

    while getopts d:f _opt; do
        case ${_opt} in
            f) VM_FOREGROUND="1" ;;
        esac
    done

    shift $((OPTIND - 1))
    VM_COMMAND="$@"
}
