<%#
 Copyright 2009 Jo-Philipp Wich <jow@openwrt.org>
 Licensed to the public under the Apache License 2.0.
-%>

<%-

	local sys = require "luci.sys"
	local utl = require "luci.util"

	function guess_wifi_signal(info)
		local scale = (100 / (info.quality_max or 100) * (info.quality or 0))
		local icon

		if not info.bssid or info.bssid == "00:00:00:00:00:00" then
			icon = resource .. "/icons/signal-none.png"
		elseif scale < 15 then
			icon = resource .. "/icons/signal-0.png"
		elseif scale < 35 then
			icon = resource .. "/icons/signal-0-25.png"
		elseif scale < 55 then
			icon = resource .. "/icons/signal-25-50.png"
		elseif scale < 75 then
			icon = resource .. "/icons/signal-50-75.png"
		else
			icon = resource .. "/icons/signal-75-100.png"
		end

		return icon
	end

	function percent_wifi_signal(info)
		local qc = info.quality or 0
		local qm = info.quality_max or 0

		if info.bssid and qc > 0 and qm > 0 then
			return math.floor((100 / qm) * qc)
		else
			return 0
		end
	end

	function format_wifi_encryption(info)
		if info.wep == true then
			return "WEP"
		elseif info.wpa > 0 then
			return translatef("<abbr title='Pairwise: %s / Group: %s'>%s - %s</abbr>",
				table.concat(info.pair_ciphers, ", "),
				table.concat(info.group_ciphers, ", "),
				(info.wpa == 3) and translate("mixed WPA/WPA2")
					or (info.wpa == 2 and "WPA2" or "WPA"),
				table.concat(info.auth_suites, ", ")
			)
		elseif info.enabled then
			return "<em>%s</em>" % translate("unknown")
		else
			return "<em>%s</em>" % translate("open")
		end
	end

	local dev = luci.http.formvalue("device")
	local iw = luci.sys.wifi.getiwinfo(dev)

	if not iw then
		luci.http.redirect(luci.dispatcher.build_url("admin/network/wireless"))
		return
	end


	function scanlist(times)
		local i, k, v
		local l = { }
		local s = { }

		for i = 1, times do
			for k, v in ipairs(iw.scanlist or { }) do
				if not s[v.bssid] then
					l[#l+1] = v
					s[v.bssid] = true
				end
			end
		end

		return l
	end
-%>

<%+header%>

<h2><a id="content" name="content"><%:Join Network: Wireless Scan%></a></h2>

<div class="cbi-map">
	<fieldset class="cbi-section">
		<table class="cbi-section-table" style="empty-cells:hide">
			<!-- scan list -->
			<% for i, net in ipairs(scanlist(3)) do net.encryption = net.encryption or { } %>
			<tr class="cbi-section-table-row cbi-rowstyle-<%=1 + ((i-1) % 2)%>">
				<td class="cbi-value-field" style="width:16px; padding:3px">
					<abbr title="<%:Signal%>: <%=net.signal%> <%:dB%> / <%:Quality%>: <%=net.quality%>/<%=net.quality_max%>">
						<img src="<%=guess_wifi_signal(net)%>" /><br />
						<small><%=percent_wifi_signal(net)%>%</small>
					</abbr>
				</td>
				<td class="cbi-value-field" style="vertical-align:middle; text-align:left; padding:3px">
					<big><strong><%=net.ssid and utl.pcdata(net.ssid) or "<em>%s</em>" % translate("hidden")%></strong></big><br />
					<strong>Channel:</strong> <%=net.channel%> |
					<strong>Mode:</strong> <%=net.mode%> |
					<strong>BSSID:</strong> <%=net.bssid%> |
					<strong>Encryption:</strong> <%=format_wifi_encryption(net.encryption)%>
				</td>
				<td class="cbi-value-field" style="width:40px">
					<form action="<%=REQUEST_URI%>" method="post">
						<input type="hidden" name="device" value="<%=utl.pcdata(dev)%>" />
						<input type="hidden" name="join" value="<%=utl.pcdata(net.ssid)%>" />
						<input type="hidden" name="mode" value="<%=net.mode%>" />
						<input type="hidden" name="bssid" value="<%=net.bssid%>" />
						<input type="hidden" name="channel" value="<%=net.channel%>" />
						<input type="hidden" name="wep" value="<%=net.encryption.wep and 1 or 0%>" />
						<% if net.encryption.wpa then %>
						<input type="hidden" name="wpa_version" value="<%=net.encryption.wpa%>" />
						<% for _, v in ipairs(net.encryption.auth_suites) do %><input type="hidden" name="wpa_suites" value="<%=v%>" />
						<% end; for _, v in ipairs(net.encryption.group_ciphers) do %><input type="hidden" name="wpa_group" value="<%=v%>" />
						<% end; for _, v in ipairs(net.encryption.pair_ciphers) do %><input type="hidden" name="wpa_pairwise" value="<%=v%>" />
						<% end; end %>

						<input type="hidden" name="clbridge" value="<%=iw.type == "wl" and 1 or 0%>" />

						<input class="cbi-button cbi-button-apply" type="submit" value="<%:Join Network%>" />
					</form>
				</td>
			</tr>
			<% end %>
			<!-- /scan list -->
		</table>
	</fieldset>
</div>
<div class="cbi-page-actions right">
	<form class="inline" action="<%=luci.dispatcher.build_url("admin/network/wireless")%>" method="get">
		<input class="cbi-button cbi-button-reset" type="submit" value="<%:Back to overview%>" />
	</form>
	<form class="inline" action="<%=REQUEST_URI%>" method="get">
		<input type="hidden" name="device" value="<%=utl.pcdata(dev)%>" />
		<input class="cbi-button cbi-input-find" type="submit" value="<%:Repeat scan%>" />
	</form>
</div>

<%+footer%>
