nixin-krops/modules/reverse-proxy.nix

{ config, lib, pkgs, ... }:

let
    localCertificationDirectory = config.security.localCertification.directory;
in
{
  # Enable Traefik
  services.traefik.enable = true;

  # Let Traefik interact with Docker
  services.traefik.group = "docker";

  virtualisation.docker.enable = true;

  virtualisation.oci-containers = {
    backend = "docker";
  };

  # Traefik static configuration options 
  services.traefik.staticConfigOptions = {
    api.dashboard = true;
    api.insecure = false;

    # Enable logs
    log = {
      level = "INFO";
      filePath = "${config.services.traefik.dataDir}/traefik.log";
      format = "json";
    };
    accessLog.filePath = "${config.services.traefik.dataDir}/accessLog.log";

    # Enable Docker provider
    providers.docker = {
        endpoint = "unix:///run/docker.sock";
        watch = true;
        exposedByDefault = false;
    };

    # Configure entrypoints, i.e the ports
    entryPoints = {
      web = {
        address = ":80";
        http.redirections.entryPoint = {
          to = "websecure";
          scheme = "https";
        };
      };
      websecure = {
        address = ":443";
        asDefault = true;
        http.tls.certResolver = "acme-challenge";
      };
    };

    # Configure certification
    certificatesResolvers.acme-challenge.acme = {
      email = "contact@distrilab.fr";
      storage = "${config.services.traefik.dataDir}/acme.json";
      httpChallenge.entryPoint = "web";
    };

  };

  # Whitelist middleware to limit access to the wireguard network
  services.traefik.dynamicConfigOptions.http.middlewares.wg-whitelist.ipwhitelist = {
    sourceRange = [ "192.168.12.0/24" ];
  };

  # Dashboard
  services.traefik.dynamicConfigOptions.http.routers.dashboard = {
    rule = lib.mkDefault "Host(`traefik.lab12.fr`)";
    service = "api@internal";
    # restrict access to the dashboard
    middlewares = [ "wg-whitelist" ];
    entryPoints = [ "websecure" ];
  };


  # You can find and example proxy for a non-docker service in the nixin-web.nix module 

  # Example docker service with traefik proxy enabled through labels
  virtualisation.oci-containers.containers.whoami = {
    autoStart = true;
    image = "jwilder/whoami";
    extraOptions = [
      "--label=traefik.enable=true"
      "--label=traefik.http.routers.whoami.entrypoints=websecure"
      "--label=traefik.http.routers.whoami.rule=Host(`whoami.lab12.fr`)"
      "--label=traefik.http.routers.whoami.tls=true"
      "--label=traefik.http.services.whoami.loadbalancer.server.port=8000"
      "--label=traefik.http.routers.whoami.tls.certresolver=acme-challenge"
    ];
  };

}