user nginx;
worker_processes 1;

error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;

events {
    worker_connections 1024;
}

http {
    include /etc/nginx/mime.types;

    log_format main '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" '
                    '"$http_user_agent" "$http_x_forwarded_for"';
    access_log /var/log/nginx/access.log main;

    sendfile on;
    keepalive_timeout 65;

    gzip on;
    gzip_static on;
    gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;
    gzip_proxied any;
    gzip_vary on;
    gzip_comp_level 6;
    gzip_buffers 16 8k;
    gzip_http_version 1.1;

    server {
        listen 80;
        root /usr/share/nginx/html;
        index index.html index.htm;
        
        # Redirect `http` to `https`
        if ($http_x_forwarded_proto = "http") {
            return 301 https://$host$request_uri;
        }

        # Normalize URLs
        merge_slashes off; # required for the next two rules to see the adjacent slashes
        rewrite ^//+(.*)        $scheme://$http_host/$1     permanent; # remove adjacent slashes at the start of the URI
        rewrite ^/(.*)//+(.*)   $scheme://$http_host/$1/$2  permanent; # remove adjacent slashes in the middle of the URI
        rewrite ^/([^.]*[^/])$  $scheme://$http_host/$1/    permanent; # force a trailing slash except for files with an extension

        # Permanent redirects (301)
        rewrite ^/docs/hostedservice/(.*)$                              $scheme://$http_host/docs/en/hosted-service/$1      permanent;
        rewrite ^/docs/(?!(?:[a-zA-Z][a-zA-Z]|_next|img)(?:/|$))(.*)$   $scheme://$http_host/docs/en/$1                     permanent; # Redirect to `/en` if no language in URL and not an asset URL

        rewrite ^/docs/([a-zA-Z][a-zA-Z])/about/introduction/$                          $scheme://$http_host/docs/$1/about/                                         permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/about/network/$                               $scheme://$http_host/docs/$1/network/overview/                              permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/curating/$                                    $scheme://$http_host/docs/$1/network/curating/                              permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/delegating/$                                  $scheme://$http_host/docs/$1/network/delegating/                            permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/developer/assemblyscript-api/$                $scheme://$http_host/docs/$1/developing/assemblyscript-api/                 permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/developer/assemblyscript-migration-guide/$    $scheme://$http_host/docs/$1/release-notes/assemblyscript-migration-guide/  permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/developer/create-subgraph-hosted/$            $scheme://$http_host/docs/$1/developing/creating-a-subgraph/                permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/developer/define-subgraph-hosted/$            $scheme://$http_host/docs/$1/developing/defining-a-subgraph/                permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/developer/deprecating-a-subgraph/$            $scheme://$http_host/docs/$1/managing/deprecating-a-subgraph/               permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/developer/developer-faq/$                     $scheme://$http_host/docs/$1/developing/developer-faqs/                     permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/developer/distributed-systems/$               $scheme://$http_host/docs/$1/querying/distributed-systems/                  permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/developer/graphql-api/$                       $scheme://$http_host/docs/$1/querying/graphql-api/                          permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/developer/matchstick/$                        $scheme://$http_host/docs/$1/developing/unit-testing-framework/             permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/developer/publish-subgraph/$                  $scheme://$http_host/docs/$1/publishing/publishing-a-subgraph/              permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/developer/query-the-graph/$                   $scheme://$http_host/docs/$1/querying/querying-the-graph/                   permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/developer/querying-best-practices/$           $scheme://$http_host/docs/$1/querying/querying-best-practices/              permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/developer/querying-from-your-app/$            $scheme://$http_host/docs/$1/querying/querying-from-an-application/         permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/developer/quick-start/$                       $scheme://$http_host/docs/$1/cookbook/quick-start/                          permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/developer/subgraph-debug-forking/$            $scheme://$http_host/docs/$1/cookbook/subgraph-debug-forking/               permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/explorer/$                                    $scheme://$http_host/docs/$1/network/explorer/                              permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/hosted-service/deploy-subgraph-hosted/$       $scheme://$http_host/docs/$1/deploying/deploying-a-subgraph-to-hosted/      permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/hosted-service/migrating-subgraph/$           $scheme://$http_host/docs/$1/cookbook/migrating-a-subgraph/                 permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/hosted-service/query-hosted-service/$         $scheme://$http_host/docs/$1/querying/querying-the-hosted-service/          permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/hosted-service/what-is-hosted-service/$       $scheme://$http_host/docs/$1/deploying/hosted-service/                      permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/indexing/$                                    $scheme://$http_host/docs/$1/network/indexing/                              permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/studio/billing/$                              $scheme://$http_host/docs/$1/querying/billing/                              permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/studio/deploy-subgraph-studio/$               $scheme://$http_host/docs/$1/deploying/deploying-a-subgraph-to-studio/      permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/studio/managing-api-keys/$                    $scheme://$http_host/docs/$1/querying/managing-api-keys/                    permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/studio/multisig/$                             $scheme://$http_host/docs/$1/cookbook/multisig/                             permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/studio/studio-faq/$                           $scheme://$http_host/docs/$1/deploying/subgraph-studio-faqs/                permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/studio/subgraph-studio/$                      $scheme://$http_host/docs/$1/deploying/subgraph-studio/                     permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/studio/transferring-subgraph-ownership/$      $scheme://$http_host/docs/$1/managing/transferring-subgraph-ownership/      permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/supported-networks/arweave/$                  $scheme://$http_host/docs/$1/cookbook/arweave/                              permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/supported-networks/cosmos/$                   $scheme://$http_host/docs/$1/cookbook/cosmos/                               permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/supported-networks/near/$                     $scheme://$http_host/docs/$1/cookbook/near/                                 permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/developing/defining-a-subgraph/$              $scheme://$http_host/docs/$1/developing/creating-a-subgraph/                permanent;
        rewrite ^/docs/([a-zA-Z][a-zA-Z])/arbitrum-faq/$                                $scheme://$http_host/docs/$1/arbitrum/arbitrum-faq/                                  permanent;

        # Temporary redirects (302)
        rewrite ^/docs/en/firehose/$                $scheme://$http_host/docs/en/firehose/README/               redirect;
        rewrite ^/docs/en/querying/graph-client/$   $scheme://$http_host/docs/en/querying/graph-client/README/  redirect;
        rewrite ^/docs/en/substreams/$              $scheme://$http_host/docs/en/substreams/README/             redirect;

        location / {
            try_files $uri $uri.html $uri/index.html =404;

            add_header Cache-Control 'no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0';
            expires -1;
        }

        location ~ ^/docs/([a-zA-Z][a-zA-Z])/(.*) {
            error_page 404 /docs/$1/404/index.html;
        }

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

stream {}