# vim: ft=nginx
server {
    listen       80;
    listen [::]:80;


    # =====MATRIX WELL-KNOWN FILES=====
    # Used for server federation
    location = /.well-known/matrix/server {
        charset utf-8;
        default_type application/json;

        if ($request_method = 'GET') {
            add_header Access-Control-Allow-Origin '*';
            add_header Access-Control-Allow-Methods 'GET, POST, PUT, DELETE, OPTIONS';
            add_header Access-Control-Allow-Headers 'X-Requested-With, Content-Type, Authorization';

            return 200 '{"m.server":"${MATRIX_SERVER}"}';
        }

        if ($request_method = 'OPTIONS') {
            add_header Access-Control-Allow-Origin '*';
            add_header Access-Control-Allow-Methods 'GET, POST, PUT, DELETE, OPTIONS';
            add_header Access-Control-Allow-Headers 'X-Requested-With, Content-Type, Authorization';
            add_header 'Content-Length' 0;
            return 204;
        }

        return 405;
    }

    location = /.well-known/matrix/client {
        charset utf-8;
        default_type application/json;

        if ($request_method = 'GET') {
            add_header Access-Control-Allow-Origin '*';
            add_header Access-Control-Allow-Methods 'GET, POST, PUT, DELETE, OPTIONS';
            add_header Access-Control-Allow-Headers 'X-Requested-With, Content-Type, Authorization';

            return 200 '{"m.homeserver":{"base_url":"${MATRIX_CLIENT_SERVER}"}}';
        }

        if ($request_method = 'OPTIONS') {
            add_header Access-Control-Allow-Origin '*';
            add_header Access-Control-Allow-Methods 'GET, POST, PUT, DELETE, OPTIONS';
            add_header Access-Control-Allow-Headers 'X-Requested-With, Content-Type, Authorization';
            add_header 'Content-Length' 0;
            return 204;
        }

        return 405;
    }


    # =====FRONTEND HOSTING=====
    location / {
        root   /usr/share/nginx/html;
        index  index.html;
    }

    error_page  404              /404.html;

    # redirect server error pages to the static page /50x.html
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }
}