{ config, ... }:

{
  services = {
    nginx.virtualHosts."grafana.emile.space" = {
      addSSL = true;
      enableACME = true;
      locations."/" = {
          proxyPass = "http://${toString config.services.grafana.settings.server.http_addr}:${toString config.services.grafana.settings.server.http_port}/";
          proxyWebsockets = true;
      };
    };

    grafana = {
      enable = true;
      settings = {
        server = {
          http_addr = "127.0.0.1";
          http_port = config.emile.ports.grafana;
          domain = "grafana.emile.space";
          root_url = "https://grafana.emile.space/";
        };
      };

      provision = {
        datasources = {
          settings = {
            datasources = [
              {
                url = "http://localhost:${toString config.services.prometheus.port}";
                type = "prometheus";
                name = "Prometheus";
                editable = false;
                access = "proxy"; # server = "proxy", browser = "direct"
              }
              # {
              #   name = "loki";
              #   url = "http://localhost:${toString config.services.loki.configuration.server.http_listen_port}";
              #   type = "loki";
              # }
            ];
          };
        };
      };
    };

    prometheus = {
      enable = true;
      retentionTime = "356d";
      port = config.emile.ports.prometheus;

      exporters = {
        node = {
          enable = true;
          enabledCollectors = [ "systemd" ];
          port = config.emile.ports.prometheus_node_exporter;
        };
        systemd = {
          enable = true;
          port = config.emile.ports.prometheus_systemd_exporter;
        };
        smartctl = {
          enable = true;
          port = config.emile.ports.prometheus_smartctl_exporter;
        };
      };
      scrapeConfigs = [
        {
          job_name = "corrino";
          static_configs = [
            { targets = [ "127.0.0.1:${toString config.services.prometheus.exporters.node.port}" ]; }
            { targets = [ "127.0.0.1:${toString config.services.prometheus.exporters.systemd.port}" ]; }
            { targets = [ "127.0.0.1:${toString config.services.prometheus.exporters.smartctl.port}" ]; }
          ];
        }
        {
          job_name = "lampadas";
          static_configs = [
            { targets = [ "lampadas:9100" ]; }
            { targets = [ "lampadas:9558" ]; }
            { targets = [ "lampadas:9633" ]; }
          ];
        }
      ];
    };

    # loki = {
    #   enable = true;
    #   configuration = {
    #     auth_enabled = false;
    #     server = {
    #       http_listen_port = ports.loki;
    #     };

    #     limits_config = {
    #       reject_old_samples = true;
    #       reject_old_samples_max_age = "7d";
    #       max_global_streams_per_user = 100000;
    #     };

    #     common = {
    #       instance_addr = "127.0.0.1";
    #       ring = {
    #         instance_addr = "127.0.0.1";
    #         kvstore.store = "inmemory";
    #       };
    #       replication_factor = 1;
    #       path_prefix = "/tmp/loki";
    #     };

    #     schema_config.configs = [{
    #       from = "2023-05-09";
    #       store = "boltdb-shipper";
    #       object_store = "filesystem";
    #       schema = "v11";
    #       index = {
    #         prefix = "index_";
    #         period = "24h";
    #       };
    #     }];
    #   };
    # };
  };

  # # allow the promtail user to read the nginx access files
  # users.users.promtail.extraGroups = [ "nginx" ];

  # services = {
  #   promtail = {
  #     enable = true;
  #     configuration = {
  #       server = {
  #         http_listen_port = ports.promtail;
  #         grpc_listen_port = 0;
  #       };
  #       positions.filename = "/tmp/positions.yml";
  #       clients = [{
  #         url = "http://localhost:${toString config.services.loki.configuration.server.http_listen_port}/loki/api/v1/push";
  #       }];
  #       scrape_configs = [

  #         # systemd
  #         {
  #           job_name = "journal";
  #           journal = {
  #             max_age = "12h";
  #             labels = {
  #               job = "systemd-journal";
  #               host = config.networking.hostName;
  #             };
  #           };
  #           relabel_configs = [
  #             {
  #               source_labels = [ "__journal__systemd_unit" ];
  #               target_label = "unit";
  #             }
  #           ];
  #         }

  #         # nginx error log
  #         {
  #           job_name = "nginx-error-logs";
  #           static_configs = [{
  #             targets = [ "localhost" ];
  #             labels = {
  #               job = "nginx-error-logs";
  #               host = "corrino";
  #               __path__ = "/var/log/nginx/*error.log";
  #             };
  #           }];
  #         }

  #         # nginx
  #         {
  #           job_name = "nginx";
  #           static_configs = [
  #             {
  #               targets = [ "localhost" ];
  #               labels = {
  #                 job = "nginx";
  #                 host = "corrino";
  #                 __path__ = "/var/log/nginx/*access.log";
  #               };   
  #             }
  #           ];
  #           pipeline_stages = [
  #             # {
  #             #   regex = {
  #             #     expression = "(?:[0-9]{1,3}\.){3}([0-9]{1,3})";
  #             #     replace = "***";
  #             #   };
  #             # }
  #             {
  #               regex = {
  #                 expression = ''(?P<remote_addr>.+) - - \[(?P<time_local>.+)\] "(?P<method>.+) (?P<url>.+) (HTTP\/(?P<version>\d.\d))" (?P<status>\d{3}) (?P<body_bytes_sent>\d+) (["](?P<http_referer>(\-)|(.+))["]) (["](?P<http_user_agent>.+)["])'';
  #               };
  #             }
  #             {
  #               labels = {
  #                 remote_addr = null;
  #                 time_local = null;
  #                 method = null;
  #                 url = null;
  #                 status = null;
  #                 body_bytes_sent = null;
  #                 http_referer = null;
  #                 http_user_agent = null;
  #               };
  #             }
  #             # {
  #             #   timestamp = {
  #             #     source = "time_local";
  #             #     format = "02/Jan/2006:15:04:05 -0700";
  #             #   };
  #             # }
  #             {
  #               drop = {
  #                 source = "url";
  #                 expression = ''/(_matrix|.well-known|notifications|api|identity).*'';
  #               };
  #             }
  #             {
  #               drop = {
  #                 source = "url";
  #                 expression = ''grafana.*'';
  #               };
  #             }
  #           ];
  #         }

  #       ];
  #     };
  #   };
  # };
}