#!bin/python
from run_local import log
from light9 import showconfig
from light9.namespaces import L9
from urllib.parse import urlparse
from urllib.parse import splitport

log.info('generating config')
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)]
})