# For the time being, this file follows the lisp bracing
# convention. i.e.:
#  if(frob this) {
#    frob that
#    if(frob theother) {
#      unfrob this
#      unfrob that}}

wmiiscript=$1
wmiikeys=()
wmiikeyhelp=''

wi_newline='
'

echo Start $wmiiscript | wmiir write /event >[2]/dev/null \
	|| exit write

if(~ $scriptname '')
	scriptname=$wmiiscript

# Blech.
if(! test -x $PLAN9/bin/read)
	fn read { sh -c 'read -r x || exit 1; echo $x' }

fn wi_atexit {}
fn sigexit {
	wi_atexit
}

fn wi_fatal {
	echo $scriptname: Fatal: $*
	exit fatal
}

fn wi_notice {
	xmessage $scriptname: Notice: $*
}

fn wi_readctl { wmiir read /ctl | sed -n 's/^'$1' (.*)/\1/p' }

wmiifont=`{wi_readctl font}
wmiinormcol=`{wi_readctl normcolors}
wmiifocuscol=`{wi_readctl focuscolors}

fn wi_fnmenu {
	group=$1^Menu-$2 last=$group^_last fns=`{wi_getfuns $group} {
	shift 2
	if(! ~ $#fns 0) {
		res = `{wmii9menu -i $"($last) $fns} \
		if(! ~ $res '') {
			($last) = $res
			$group-$res $*}}}
}

fn wi_fn-p {
	rc -c 'whatis '$1 >[2]/dev/null | grep -s '^fn '
}

fn wi_proglist {
	ifs=: { wmiir proglist -- `{echo -n $*} | sort | uniq }
}

fn wi_actions {
	{	wi_proglist $WMII_CONFPATH
	 	wi_getfuns Action
	} | sort | uniq
}

fn wi_script {
	noprog=true prog=() {
		if(~ $1 -f) {
			shift
			noprog=/dev/null
		}
		prog = `{rc -c 'path=$confpath whatis '$1 >[2]/dev/null \
			| grep -v '^fn |=' || echo $noprog}
		shift; echo $prog $*}
}


fn wi_initkeys {
	ifs=() {
		wmiikeys = `{wmiir read /keys} {
			mykeys = `{comm -23 \
				<{wi_getfuns Key | sort | uniq} \
				<{echo $wmiikeys | sort | uniq}}
			{echo $wmiikeys; wi_getfuns Key} \
				| sort | uniq \
				| wmiir write /keys }}
	fn wi_atexit {
		wi_cleankeys
	}
}

fn wi_cleankeys {
	ifs=() {
		wmiikeys = `{wmiir read /keys} {
			comm -23 <{echo $wmiikeys | sort | uniq} \
				 <{echo $mykeys} \
				 | wmiir write /keys }}
}

fn wi_runcmd { @{
		rfork ns
		path=$oldpath
		if(~ $1 -t) {
			shift
			* = (wihack -tags `{wmiir read /tag/sel/ctl | sed 1q} $*) }
		fn `{env | 9 sed -n 's/^fn#([^=]+).*/\1/p'}
		mykeys=()
		if(! ~ $* '')
			eval exec $* & }
}

fn wi_getfuns {
	env | sed -n 's/^fn#'^$1^'-([^=]+).*/\1/p' | sort | uniq
}

for(i in Key Event Action '*Menu')
	fns=`{wi_getfuns $i} {
		if(! ~ $fns '')
			fn $i-^$fns}

fn wi_tags {
	wmiir ls /tag | sed 's,/,,; /^sel$/d'
}

fn wi_seltag {
	wmiir read /tag/sel/ctl | sed 1q
}

fn wi_selclient {
	wmiir read /client/sel/ctl | sed 1q
}

fn wi_nexttag {
	awk -v 'curtag='^`{wi_seltag} '
		NR==1 {first = $0}
		$0==curtag { if(getline) print $0; else print first; exit }'
}

fn wi_eventloop {
	wi_initkeys

	{
		if(~ $1 -i)
			cat
		if not
			wmiir read /event
	} | while(ifs=$wi_newline{wi_event=`{read}}) {
		ifs=$wi_newline{
			wi_arg=`{echo $wi_event | sed 's/^[^ ]+ //'}}
		* = `{echo $wi_event}
		event = $1; shift
		Event-$"event $*
	} >[2]/dev/null </dev/null
	true
}

fn Event-Key {
	Key-$1 $1
}

fn Event-Quit {
	exit
}

fn Event-Start {
       if(~ $1 $wmiiscript)
               exit
}

fn Action {
	cmd=$1 action=Action-$"cmd { shift
		if(! ~ $cmd '') {
			if(wi_fn-p $action)
				$action $*
			if not
				wi_runcmd `{wi_script $cmd} $*
		}
	}
}