====== OnlyOffice ======
OnlyOffice and NextCloud in Docker. Both proxied by NGINX rev proxy.
  * NextCloud app is on https://nc.example.com
  * OnlyOffice app is on https://nc.example.com/documentserver/

===== References =====
[[https://helpcenter.onlyoffice.com/installation/docs-community-install-ubuntu.aspx|Installing ONLYOFFICE Docs Community Edition for Debian, Ubuntu, and derivatives]]

[[https://helpcenter.onlyoffice.com/installation/docs-community-proxy.aspx|Using ONLYOFFICE Docs behind the proxy]]

[[https://www.linuxbabe.com/ubuntu/integrate-nextcloud-onlyoffice|How to Integrate OnlyOffice with NextCloud on Ubuntu]]

===== NGINX config =====

Additional config lines for NextCloud virtual site config:

<file example.com>
upstream docservice {
    server 192.168.64.231:3077;
}

map $http_x_forwarded_proto $the_scheme {
     default $http_x_forwarded_proto;
     "" $scheme;
}

map $http_x_forwarded_host $the_host {
    default $http_x_forwarded_host;
    "" $host;
}

map $http_upgrade $proxy_connection {
    default upgrade;
    "" close;
}

server { 
    ..
    location /documentserver {
        return 302 /documentserver/;
    }
    location ~ ^/web-apps/(.*) {
         # rewrite     ^   https://$server_name$request_uri? permanent;
         return 302 /documentserver/web-apps/$1$is_args$args;
    }
    location /documentserver/ {
        proxy_pass http://docservice/;
        proxy_http_version 1.1;

        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $proxy_connection;
        proxy_set_header X-Forwarded-Host $the_host/documentserver;
        proxy_set_header X-Forwarded-Proto $the_scheme;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }
}
</file>

Based on hints from: [[https://github.com/ONLYOFFICE/document-server-proxy]]

===== docker-compose =====

[[https://github.com/ONLYOFFICE/docker-onlyoffice-nextcloud]]
[[https://hub.docker.com/r/onlyoffice/documentserver/]]

OnlyOffice network in Docker is configured:
  * as 'onlyoffice' node on port 80 (internal linked services network)
  * as TCP:3077 on Docker host (rev proxied by NGINX )

==== Test OnlyOffice server ====
Web page should be shown on link: [[https://nc.example.com/documentserver/welcome/]]


===== NextCloud =====
Install and enable `OnlyOffice` plugin.

Configure it as follows:
<code bash>
### Trusted domain 
./occ config:system:get trusted_domains

# Put correct indexes in commands below:
./occ config:system:set trusted_domains 0 --value="nc.example.com"

# NC http port is exposed from Docker to host port 3007
./occ config:system:set trusted_domains 1 --value="host_ip:3007"

### OnlyOffice config
# OnlyOffice server URL:
./occ config:system:set onlyoffice DocumentServerUrl --value="https://nc.example.com/documentserver/"
# How OnlyOffice can reach NC:
./occ config:system:set onlyoffice StorageUrl --value="http://nc.grinn-global.com/"
# NOTE; it is possible to put external URL like above, but NC can communicate directly inside private Docker network
./occ config:system:set onlyoffice DocumentServerInternalUrl --value="https://onlyoffice/"

# And permit NC to communicate with local addresses
# Without this you can got error: Error when trying to connect (Host violates local access rules)
./occ config:system:set allow_local_remote_servers --value true --type bool
</code>