CrOS/modules/services/frigate/default.nix

let
  volumePath = "/overseer/services";
in
  {
    pkgs,
    lib,
    config,
    ...
  }: let
    frigateConfig = pkgs.writeText "config.yaml" (lib.generators.toYAML {} {
      auth.reset_admin_password = true; # roll the admin password every restart, depend on user accounts for long-lived access
      tls.enabled = false; # off because we're doing ssl through nginx
      mqtt = {
        # TODO: add mqtt broker
        enabled = false;
      };
      notifications = {
        enabled = true;
        email = "frigate@wanderingcrow.net";
      };
      ###################
      # go2rtc restream #
      ###################
      go2rtc = {
        streams = {
          wce-0001 = [
            "rtsp://thingino:thingino@192.168.150.1:554/ch0"
          ];
          wce-0001_sub = [
            "rtsp://thingino:thingino@192.168.150.1:554/ch1"
          ];
          wce-0002 = [
            "rtsp://thingino:thingino@192.168.150.2:554/ch0"
          ];
          wce-0002_sub = [
            "rtsp://thingino:thingino@192.168.150.2:554/ch1"
          ];
          wce-0003 = [
            "rtsp://thingino:thingino@192.168.150.3:554/ch0"
          ];
          wce-0003_sub = [
            "rtsp://thingino:thingino@192.168.150.3:554/ch1"
          ];
        };
      };
      #############
      # Detectors #
      #############
      detectors = {
        coral = {
          type = "edgetpu";
          device = "usb";
        };
      };
      objects = {
        track = [
          "person"
          "cat"
          "car"
          "dog"
        ];
      };
      review = {
        alerts = {
          labels = [
            "person"
            "cat"
          ];
        };
      };
      ####################
      # Data Persistence #
      ####################
      record = {
        enabled = true;
        retain.days = 0; # as per official documentation
        alerts = {
          retain.days = 14;
        };
        detections = {
          retain.days = 14;
        };
      };
      #################
      # Camera config #
      #################
      cameras = {
        wce-0001 = {
          ffmpeg = {
            inputs = [
              {
                path = "rtsp://127.0.0.1:8554/wce-0001";
                roles = ["record"];
              }
              {
                path = "rtsp://127.0.0.1:8554/wce-0001_sub";
                roles = ["detect"];
              }
            ];
          };
          live.stream_name = "wce-0001_sub";
          motion = {
            enabled = true;
            mask = [
              "0,0,0.196,0.002,0.195,0.045,0,0.043" # timestamp
              "0.898,0,0.896,0.045,1,0.048,0.999,0.002" # uptime
            ];
          };
          detect.enabled = true;
        };
        wce-0002 = {
          ffmpeg = {
            inputs = [
              {
                path = "rtsp://127.0.0.1:8554/wce-0002";
                roles = ["record"];
              }
              {
                path = "rtsp://127.0.0.1:8554/wce-0002_sub";
                roles = ["detect"];
              }
            ];
          };
          live.stream_name = "wce-0002_sub";
          motion = {
            enabled = true;
            mask = [
              "0,0,0.196,0.002,0.195,0.045,0,0.043" # timestamp
              "0.898,0,0.896,0.045,1,0.048,0.999,0.002" # uptime
            ];
          };
          detect.enabled = true;
        };
        wce-0003 = {
          ffmpeg = {
            inputs = [
              {
                path = "rtsp://127.0.0.1:8554/wce-0003";
                roles = ["record"];
              }
              {
                path = "rtsp://127.0.0.1:8554/wce-0003_sub";
                roles = ["detect"];
              }
            ];
          };
          live.stream_name = "wce-0003_sub";
          motion = {
            enabled = true;
            mask = [
              "0,0,0.196,0.002,0.195,0.045,0,0.043" # timestamp
              "0.898,0,0.896,0.045,1,0.048,0.999,0.002" # uptime
            ];
          };
          detect.enabled = true;
        };
      };
    });
  in {
    sops = {
      templates."frigate_env".content = ''
        FRIGATE_JWT_SECRET=${config.sops.placeholder."frigate/jwt"}
      '';
      secrets = {
        "frigate/jwt" = {};
      };
    };
    systemd.tmpfiles.rules = [
      "d ${volumePath}/frigate"
      "d ${volumePath}/frigate/media/frigate"
      "d ${volumePath}/frigate/db"
      "f ${volumePath}/frigate/db/frigate.db"
    ];
    ###########
    # Service #
    ###########

    virtualisation.oci-containers = {
      backend = "podman";
      containers = {
        "frigate" = {
          image = "ghcr.io/blakeblackshear/frigate:stable";
          environmentFiles = [config.sops.templates."frigate_env".path];
          volumes = [
            "/etc/localtime:/etc/localtime:ro"
            "${volumePath}/frigate/media/frigate:/media/frigate"
            "${frigateConfig}:/config/config.yaml:ro"
            "${volumePath}/frigate/db/frigate.db:/config/frigate.db"
          ];
          extraOptions = [
            "--shm-size=612m"
            "--ip=10.88.0.10"
          ];
          devices = [
            "/dev/bus/usb:/dev/bus/usb"
          ];
        };
      };
    };

    services.nginx = {
      enable = true;
      recommendedProxySettings = true;
      virtualHosts = {
        "frigate.wanderingcrow.net" = {
          forceSSL = true;
          useACMEHost = "frigate.wanderingcrow.net";
          locations."/" = {
            proxyPass = "http://10.88.0.10:8971";
            proxyWebsockets = true;
          };
        };
      };
    };
  }