if {[expr ! [exists -proc class ]]} { package require oo }

class pkg {
	name		""
	descr		""
	installed	""
	latest		""
	install_time	0
}

pkg method _load {nm info} {
	set name $nm
	set latest [lindex $info 0]
	set descr [lrange $info 1 end]

	foreach line [split [exec /bin/opkg status $name] "\n"] {
		if {[string match {Version: *} $line]} {
			set installed [string range $line 9 end]
		}
		if {[string match {Installed-Time: } $line]} {
			set install_time [string range $line 16 end]
		}
	}
}

pkg method is {what} {
	switch $what {
		installed {
			if {$installed eq ""} { return 0 }
			return 1
		}
		upgradable {
			if {$installed eq $latest} { return 0 }
			return 1
		}
	}
	return 0
}

proc {pkg load} {nm info} {
	set e [pkg]
	$e _load $nm $info
	return $e
}

proc {pkg avail} {} {
	set avail_pkgs {}
	foreach pkg [split [exec /bin/opkg list] "\n"] {
		if [regexp {^ } $pkg] {
			append descr $pkg
		} else {
			if {[regexp {^([^ ]+) - ([^ ]+) - (.*)$} \
			    $pkg full name ver descr] == 0} { continue }
		}
		set avail_pkgs($name) [concat $ver "$descr"]
		#puts "Set: $name = ($ver, $descr)<br>"
	}
	return $avail_pkgs
}

proc {pkg installed} {} {
	# Build a list of installed packages - just the names
	set inst_pkgs {}
	foreach pkg [split [exec /bin/opkg list-installed] "\n"] {
		if {[regexp {^([^ ]+)} $pkg name] == 0} { continue }
		lappend inst_pkgs $name
		#puts "Inst: $name<br>"
	}
	return $inst_pkgs
}

proc {pkg upgradable} {} {
	#webif - 0.5.3 - 0.5.7
	set upgr_pkgs {}
	foreach pkg [split [exec /bin/opkg list-upgradable] "\n"] {
		if {[regexp {^([^ ]+) - ([^ ]+) - (.*)$} $pkg \
		    dummy name oldver newver] == 0} { continue }
		set upgr_pkgs($name) [concat $oldver $newver]
		#puts "Set: $name = ($oldver, $newver)<br>"
	}
	return $upgr_pkgs
}