ffac-eol-ssid: fix name of eol-ssid subsystem

Before thie change, the eol-ssid uci subsystem had to be created manually
and the uci settings did not show up for this package.

ffac-eol-ssid/Makefile

@@ -12,4 +12,8 @@ define Package/$(PKG_NAME)
   DEPENDS:=+gluon-core
 endef
 
+define Package/ffac-eol-ssid/conffiles
+/etc/config/eol-ssid
+endef
+
 $(eval $(call BuildPackageGluon,ffac-eol-ssid))

ffac-eol-ssid/README.md

@@ -13,9 +13,16 @@ Then one can add the `ffac-eol-ssid` package to the old version and leave a much
 ## Site Configuration
 
 ```
-eol_wifi_ssid = 'erneuern.freifunk.net'
+eol_wifi = {
+    enabled = true,
+    ssid = 'erneuern.freifunk.net',
+}
 ```
 
+## Upgrading
+
+This package will migrate uci settings for previous version of this package.
+
 ## Limitations
 
 As this package was created to migrate older devices, it does not respect 5GHz or OWE radio.

ffac-eol-ssid/check_site.lua

@@ -0,0 +1,4 @@
+obsolete({'eol_wifi_ssid'}, 'Use eol_wifi.settings.ssid instead.')
+if need_boolean({'eol_wifi', 'enabled'}, false) then
+    need_string({'eol_wifi', 'ssid'})
+end

ffac-eol-ssid/files/etc/config/eol-ssid

@@ -0,0 +1,2 @@
+config eol-ssid 'settings'
+        option enabled '1'

ffac-eol-ssid/luasrc/lib/gluon/upgrade/500-eol-ssid-config

@@ -0,0 +1,11 @@
+#!/usr/bin/lua
+
+local uci = require('simple-uci').cursor()
+
+-- migrate older versions
+if uci:get('eol-wifi', 'ssid') then
+    local deprecated_ssid_enabled = not uci:get_bool('eol-wifi', 'ssid', 'disabled')
+    uci:set('eol-ssid', 'settings', 'enabled', deprecated_ssid_enabled)
+    uci:delete('eol-wifi', 'ssid')
+    uci:save('eol-wifi')
+end

ffac-eol-ssid/luasrc/lib/gluon/upgrade/950-eol-ssid-nagger

@@ -9,14 +9,13 @@ if site.eol_wifi_ssid() == nil then
         os.exit(0)
 end
 
+-- eol-ssid feature disabled on device
+if not uci:get_bool('eol-ssid', 'settings', 'enabled') then
+    os.exit(0)
+end
+
 local eol_wifi_ssid = site.eol_wifi_ssid()
 
-if not uci:get_bool('eol-wifi', 'ssid', 'disabled') then
-        uci:section('eol-wifi', 'ssid', 'ssid', {
-                disabled = false,
-        })
-        uci:save('eol-wifi')
-        -- Change client radio ssid
-        uci:set('wireless', 'client_radio0', 'ssid', eol_wifi_ssid)
-        uci:save('wireless')
-end
+-- Change client radio ssid
+uci:set('wireless', 'client_radio0', 'ssid', eol_wifi_ssid)
+uci:save('wireless')