Caddyfile

{
    # Debug
    {$CADDY_DEBUG}
}

{$SERVER_NAME}

log {
	output file /var/log/caddy/access.log
}

@distribution path_regexp ^/docs/distribution(?:/?)$
redir @distribution /docs/symfony/

# note that once 4.1 is out we may need to improve this
@coreToSymfony path_regexp pathMatch ^/docs/core/(controllers|file-upload|fosuser-bundle|messenger|migrate-from-fosrestbundle|nelmio-api-doc|user)(?:/?)$
redir @coreToSymfony /docs/symfony/{re.pathMatch.1}/

@angular path_regexp pathMatch ^/docs/core/angularjs-integration(?:/?)$
redir @angular /docs/core/client-integration/

@docsroot path_regexp ^/docs(/?)$
redir @docsroot /docs/symfony/

@withoutTrailingSlash {
    path_regexp ^/docs
    not path_regexp .*/$
    not path_regexp \.\w+$
}

redir @withoutTrailingSlash {path}/

@versionold path_regexp version ^/docs/v((?:2|3)\.\d)/?$
redir @versionold /docs/v{re.version.1}/distribution/

@version path_regexp version ^/docs/v([^/]+)/?$
redir @version /docs/v{re.version.1}/symfony/

@version_current path_regexp path ^/docs/v4\.3/(.*)
redir @version_current /docs/{re.path.1}

@withoutExtension not path_regexp \.\w+$
@withTld path_regexp \.(org|io|fr|com|pl|me|de|gg|dev)$
@withTrailingSlash path_regexp ^(.*)/+$

handle_path /docs/* {
    # you could ADD ./docs /srv/app/docs and use this for development
    # root * /srv/app/docs
    # file_server

    reverse_proxy {$BUCKET_S3_UPSTREAM} {
        header_up Host {http.reverse_proxy.upstream.hostport}
    }

    # Handles DocumentIndices
    rewrite @withTld /{$BUCKET_S3_NAME}{path}/index.html
    rewrite @withTrailingSlash /{$BUCKET_S3_NAME}{path}index.html
    rewrite @withoutExtension /{$BUCKET_S3_NAME}{path}/index.html

	rewrite * /{$BUCKET_S3_NAME}{path}
}

handle {
    # Disable Topics tracking if not enabled explicitly: https://github.com/jkarlin/topics
    header ?Permissions-Policy "browsing-topics=()"

    reverse_proxy http://{$PWA_UPSTREAM}
}