xrforge-v2/src/plugin/federation.lua

local util = require('util')

app.on('scan_experience', function(exp)
  --print_r(exp)
end)

app.on('scan_experience_file', function(exp)
end)

app.on('set', function(k,v)
  print("content was updated")
end)

--app.on('dir', function(opts)
--  local me = app.plugin.federation
--  if opts.urlpath == '/' then 
--    foreach( me.portals, function(k,portal)
--      print("JAAA")
--      table.insert( opts.data.items,{
--        url = portal.url,
--        name = portal.name,
--        thumbnail = portal.thumbnail
--      })
--    end)
--  end
--end)

local plugin = {
  name = 'Federation <b class="tag">disabled</b>',
  info = 'updating values requires a xrforge restart',
  opts = {  -- TODO populate this based on xrforge-federation.json
    { 
      key='app.opts.plugin_federation_url_1',
      title='Federation URL 1',
      info="a json with (janus)xr(forge) URLs",
      default="./federation.json",
      values=''
    },
    { 
      key='app.opts.plugin_federation_url_2',
      title='Federation URL 1',
      info="a json with (janus)xr(forge) URLs",
      default="",
      values=''
    },
    { 
      key='app.opts.plugin_federation_url_3',
      title='Federation URL 1',
      info="a json with (janus)xr(forge) URLs",
      default="",
      values=''
    }
  }
}

--
--   PROBLEM: every request has its own app context
--   so the util.fetch() didn't help here
--   sqlite is needed to share state

app.on('init', function()
  local me = app.plugin.federation
  me.portals = {}
  local federations = {}
  -- load previous federations if any
  for k=1,3 do
    if app.opts['plugin_federation_url_'..k] and #app.opts['plugin_federation_url_'..k] > 0 then
      table.insert(federations, app.opts['plugin_federation_url_'..k])
    end
  end

  foreach(federations, function(k,url)
    if url:match('^[./]') then 
      url = util.getURL( url:gsub('^[./]',''), {server=true} )
    end
    util.fetch(url, nil, function(req,res,next)
      if req.body then
        local t = DecodeJson(req.body)
        if t then
          foreach( t, function(k,opt)
            table.insert( me.portals, opts )
          end)
        end
      end
    end)
  end)
end)

-- this registers the plugin UI
return plugin