#!/bin/bash
# vim: set ft=sh :
#
# Command-line options

# use color output?
IS_TTY=


## Options
LOG_ERROR=y
LOG_WARN=y
LOG=y
LOG_FORCE=y
LOG_UPDATE=y
LOG_NOOP=y
LOG_SKIP=
LOG_DEBUG=
LOG_CMD=
LOG_DIFF=y

UPDATE_FORCE=
UPDATE_NOOP=
UPDATE_DIFF=

SERIAL_NOOP=
SERIAL_FORCE=

COMMIT_SKIP=
COMMIT_FORCE=
COMMIT_MSG=' '

RELOAD_NOOP=
RELOAD_FORCE=

## Output command-line argument help.
function help_args {
    local prog=$1

    cat <<END
Usage: $prog [options]

General:
    -h      display this help text
    -d DIR  datadir

Logging:    
    -q      quiet
    -v      verbose
    -D      debug
    -V      debug commands
    
Updates:
    -p      show changes
    -F      force-updates without checking src mtime
    -S      do not update serial
    -s      update serials
    -n      no-op/mock-update; don't actually change/deploy anything; implies -SpC

Commit:
    -C      do not commit changes
    -c      commit changes
    -m MSG  commit message

Deploy:
    -R      do not reload zones/dhcp
    -r      force reload zones/dhcp
END
}

## Parse any command-line arguments, setting the global options vars.
function parse_args {
    # test tty
    [ -t 1 ] && IS_TTY=y
 
    OPTIND=1

    while getopts 'hd:qvDVpFSsnCcm:Rr' opt "$@"; do
        case $opt in
            h)  
                help_args $0
                exit 0
            ;;

            d)  SRV="$OPTARG" ;;

            q)  
                LOG= 
                LOG_WARN=
                LOG_UPDATE=
                LOG_FORCE=
                LOG_NOOP=
                LOG_DIFF=
                ;;

            v)  LOG_SKIP=y ;;
            D)  
                LOG_DEBUG=y
                LOG_INFO=y
                ;;
            V)  LOG_CMD=y ;;

            p)  UPDATE_DIFF=y   ;;
            F)  UPDATE_FORCE=y  ;;
            S)  SERIAL_NOOP=y   ;;
            s)  SERIAL_FORCE=y  ;;
 
            n)  
                UPDATE_NOOP=y 
                # implies -Sp
                UPDATE_DIFF=y
                SERIAL_NOOP=y
                COMMIT_SKIP=y
                RELOAD_NOOP=y
                ;;

            C)  COMMIT_SKIP=y ;;
            c)  COMMIT_FORCE=y ;;
            m)  COMMIT_MSG="$OPTARG" ;;

            R)  RELOAD_NOOP=y   ;;
            r)  RELOAD_FORCE=y  ;;
           
            ?)  
                die 
            ;;
        esac

    done
}