#!bin/python
from run_local import log
from rdflib import RDF, URIRef
from light9 import networking, showconfig
from light9.namespaces import L9
from urllib.parse import urlparse
from urllib.parse import splitport

from rdfdb.syncedgraph import SyncedGraph
from twisted.internet import reactor

graph = showconfig.getGraph()

netHome = graph.value(showconfig.showUri(), L9['networking'])
webServer = graph.value(netHome, L9['webServer'])
if not webServer:
    raise ValueError('no %r :webServer' % netHome)
print("listen %s;" % splitport(urlparse(webServer).netloc)[1])


def location(path, server):
    print("""
    location /%(path)s/ {

      # for websocket
      proxy_http_version 1.1;
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection "upgrade";
      proxy_set_header Host $host;

      proxy_pass %(server)s;
      proxy_buffering off;
      rewrite /[^/]+/(.*) /$1 break;
    }""" % vars())


for role, server in sorted(graph.predicate_objects(netHome)):
    if not server.startswith('http') or role == L9['webServer']:
        continue
    path = graph.value(role, L9['urlPath'])
    if not path:
        continue
    server = server.rstrip('/')
    location(path, server)

showPath = showconfig.showUri().split('/', 3)[-1]
print("""
    location /%(path)s {
      root %(root)s;
    }""" % {
    'path': showPath,
    'root': showconfig.root()[:-len(showPath)]
})