server {
    listen 80;
    listen [::]:80;
    server_name localhost;

    root /usr/share/nginx/html;
    index index.html;

    location = / {
        try_files /index.html =404;
        add_header Cache-Control "no-cache";
        sub_filter_once off;
        sub_filter '<title>Element</title>' '<title>Flame HQ</title>';
        sub_filter 'name="application-name" content="Element"' 'name="application-name" content="Flame HQ"';
        sub_filter 'name="apple-mobile-web-app-title" content="Element"' 'name="apple-mobile-web-app-title" content="Flame HQ"';
        sub_filter 'https://app.element.io/themes/element/img/logos/opengraph.png' 'https://hq.b2bgrowth.systems/flame-hq/welcome-background.png';
        sub_filter '</head>' '<link rel="stylesheet" href="/flame-hq/flame-hq.css"><link rel="icon" type="image/png" href="/flame-hq/mark.png"><link rel="apple-touch-icon" href="/flame-hq/mark.png"></head>';
    }

    location = /index.html {
        add_header Cache-Control "no-cache";
        sub_filter_once off;
        sub_filter '<title>Element</title>' '<title>Flame HQ</title>';
        sub_filter 'name="application-name" content="Element"' 'name="application-name" content="Flame HQ"';
        sub_filter 'name="apple-mobile-web-app-title" content="Element"' 'name="apple-mobile-web-app-title" content="Flame HQ"';
        sub_filter 'https://app.element.io/themes/element/img/logos/opengraph.png' 'https://hq.b2bgrowth.systems/flame-hq/welcome-background.png';
        sub_filter '</head>' '<link rel="stylesheet" href="/flame-hq/flame-hq.css"><link rel="icon" type="image/png" href="/flame-hq/mark.png"><link rel="apple-touch-icon" href="/flame-hq/mark.png"></head>';
    }

    location = /version {
        add_header Cache-Control "no-cache";
    }

    location /config {
        root /tmp/element-web-config;
        add_header Cache-Control "no-cache";
    }

    location /modules {
        alias /modules;
    }

    location = /manifest.json {
        alias /flame-hq/manifest.json;
        default_type application/manifest+json;
        add_header Cache-Control "no-cache";
    }

    location /flame-hq/ {
        alias /flame-hq/;
        add_header Cache-Control "no-cache";
    }

    location ~ ^/vector-icons/.*\.(?:ico|png)$ {
        rewrite ^ /flame-hq/mark.png last;
    }

    error_page 500 502 503 504 /50x.html;
}