events {
    worker_connections  1024;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    server_tokens off;
    charset utf-8;

    resolver 127.0.0.11 valid=10s;

    client_max_body_size 50M;

    limit_req_zone $binary_remote_addr zone=login:10m rate=5r/m;
    limit_req_zone $binary_remote_addr zone=api:10m rate=30r/s;
    limit_req_zone $binary_remote_addr zone=graphql:10m rate=10r/s;
    limit_req_zone $binary_remote_addr zone=upload:10m rate=5r/m;

    log_format compact
        '$remote_addr "$request" $status rt=$request_time';

    access_log /var/log/nginx/access.log compact;

    types {
        text/javascript mjs;
    }

    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_min_length 256;
    gzip_types
        text/plain
        text/css
        text/javascript
        application/javascript
        application/json
        application/xml
        image/svg+xml
        font/woff2
        application/font-woff2;

    server {
        listen 80;
        server_name $DOMAIN www.$DOMAIN;

        # Allow Certbot to access the ACME challenge
        location /.well-known/acme-challenge/ {
            root /var/www/certbot;
        }

        # Redirect everything else to HTTPS
        location / {
            return 301 https://www.$DOMAIN$request_uri;
        }
    }

    server {
        listen 443 ssl;
        server_name $DOMAIN;

		ssl_certificate /etc/letsencrypt/live/$DOMAIN/fullchain.pem;
		ssl_certificate_key /etc/letsencrypt/live/$DOMAIN/privkey.pem;

        return 301 https://www.$DOMAIN$request_uri;
    }

	server {
		listen 443 ssl;
		http2 on;
        server_name www.$DOMAIN;

        set $upstream_backend http://$BACKEND_HOST:$BACKEND_PORT;
        set $upstream_icecast http://$ICECAST_HOST:$ICECAST_PORT;
        set $upstream_gitea http://$GITEA_HOST:$GITEA_PORT;
        set $upstream_hasura http://$HASURA_HOST:$HASURA_PORT;
        set $upstream_quartz http://$QUARTZ_HOST:$QUARTZ_PORT;
        set $upstream_searxng http://$SEARXNG_HOST:$SEARXNG_PORT;

        root /etc/nginx/html;
        index index.html;

		ssl_certificate /etc/letsencrypt/live/$DOMAIN/fullchain.pem;
		ssl_certificate_key /etc/letsencrypt/live/$DOMAIN/privkey.pem;

        add_header X-Frame-Options "SAMEORIGIN" always;
        add_header X-Content-Type-Options "nosniff" always;
        add_header Referrer-Policy "strict-origin-when-cross-origin" always;
        add_header Strict-Transport-Security "max-age=63072000; includeSubDomains" always;

        # Vite hashed assets - immutable, cache 1 year
        location /assets/ {
            expires 1y;
            add_header Cache-Control "public, immutable";
        }

        # Fonts - cache 30 days
        location /fonts/ {
            expires 30d;
            add_header Cache-Control "public";
        }

        # Images - cache 7 days
        location /img/ {
            expires 7d;
            add_header Cache-Control "public";
        }

        location /uploads/ {
            alias /uploads/;
            add_header X-Content-Type-Options nosniff always;
            add_header Content-Disposition "inline" always;
            add_header Content-Security-Policy "default-src 'none'; img-src 'self'; style-src 'none'; script-src 'none'" always;
        }

        location / {
            try_files $uri $uri/ /index.html;
        }

        location = /robots.txt {
            allow all;
            log_not_found off;
            access_log off;
        }

        location ~ /.well-known/acme-challenge/ {
            root /var/www/certbot;
        }

        location = /img/stamps/mine.gif {
            add_header Access-Control-Allow-Origin "https://www.$DOMAIN";
            expires 7d;
            add_header Cache-Control "public";
        }

        location /sound/ {
            expires 7d;
            add_header Cache-Control "public";
        }

        location $BACKEND_ENDPOINT {
            return 301 $BACKEND_ENDPOINT/;
        }

        location $BACKEND_ENDPOINT/ws {
            rewrite ^$BACKEND_ENDPOINT/(.*)$ /$1 break;
            proxy_pass $upstream_backend;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;
        }

        location $BACKEND_ENDPOINT/auth/login {
            limit_req zone=login burst=3 nodelay;
            rewrite ^$BACKEND_ENDPOINT/(.*)$ /$1 break;
            proxy_pass $upstream_backend;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;
        }

        location $BACKEND_ENDPOINT/messages/upload {
            limit_req zone=upload burst=3 nodelay;
            rewrite ^$BACKEND_ENDPOINT/(.*)$ /$1 break;
            proxy_pass $upstream_backend;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;
        }

        location $BACKEND_ENDPOINT/graphql {
            limit_req zone=graphql burst=10 nodelay;
            rewrite ^$BACKEND_ENDPOINT/(.*)$ /$1 break;
            proxy_pass $upstream_backend;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;
        }

        location $BACKEND_ENDPOINT/ {
            limit_req zone=api burst=20 nodelay;
            rewrite ^$BACKEND_ENDPOINT/(.*)$ /$1 break;
            proxy_pass $upstream_backend;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;
        }

        location /radio {
            return 301 /radio/;
        }

        location /radio/ {
            rewrite ^/radio/(.*)$ /$1 break;
            proxy_pass $upstream_icecast;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;
        }

        location /gitea {
            return 301 /gitea/;
        }

        location /gitea/ {
            rewrite ^/gitea/(.*)$ /$1 break;
            proxy_pass $upstream_gitea;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;
        }

        location /hasura {
            return 301 /hasura/;
        }

        location /hasura/ {
            auth_request /internal/auth/admin-validate;
            error_page 401 403 = @auth_denied;
            rewrite ^/hasura/(.*)$ /$1 break;
            proxy_pass $upstream_hasura;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
        }

        location /notes {
            return 301 /notes/;
        }

        location /notes/ {
            auth_request /internal/auth/admin-validate;
            error_page 401 403 = @auth_denied;
            rewrite ^/notes/(.*)$ /$1 break;
            proxy_pass $upstream_quartz;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;
        }


        location = /internal/auth/admin-validate {
            internal;
            rewrite ^ /auth/validate-admin break;
            proxy_pass $upstream_backend;
            proxy_pass_request_body off;
            proxy_set_header Content-Length "";
            proxy_set_header Cookie $http_cookie;
        }

        location @auth_denied {
            return 302 /admin/login?redirect=$request_uri;
        }

        location /searxng {
            return 301 /searxng/;
        }

        location /searxng/ {
            auth_request /internal/auth/admin-validate;
            error_page 401 403 = @auth_denied;
            rewrite ^/searxng/(.*)$ /$1 break;
            proxy_pass $upstream_searxng;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;
        }



    }

    server {
        listen 80;
        server_name chat.$DOMAIN;

        location /.well-known/acme-challenge/ {
            root /var/www/certbot;
        }

        location / {
            return 301 https://chat.$DOMAIN$request_uri;
        }
    }

    server {
        listen 443 ssl;
        http2 on;
        server_name chat.$DOMAIN;

        ssl_certificate     /etc/letsencrypt/live/$DOMAIN/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/$DOMAIN/privkey.pem;

        set $upstream_openwebui http://$OPENWEBUI_HOST:$OPENWEBUI_PORT;

        add_header X-Frame-Options "SAMEORIGIN" always;
        add_header X-Content-Type-Options "nosniff" always;
        add_header Referrer-Policy "strict-origin-when-cross-origin" always;
        add_header Strict-Transport-Security "max-age=63072000; includeSubDomains" always;

        client_max_body_size 50M;

        location = /internal/auth/admin-validate {
            internal;
            rewrite ^ /auth/validate-admin break;
            proxy_pass http://$BACKEND_HOST:$BACKEND_PORT;
            proxy_pass_request_body off;
            proxy_set_header Content-Length "";
            proxy_set_header Cookie $http_cookie;
        }

        location @auth_denied {
            return 302 https://www.$DOMAIN/admin/login?redirect=https://chat.$DOMAIN$request_uri;
        }

        location / {
            auth_request /internal/auth/admin-validate;
            error_page 401 403 = @auth_denied;
            proxy_pass $upstream_openwebui;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;
            proxy_buffering off;
            proxy_read_timeout 300s;
            proxy_send_timeout 300s;
        }
    }

}