kubernetes-deployments/modules/hedgedoc.nix

{
  config,
  lib,
  globals,
  ...
}: {
  options.hedgedoc.enable = lib.mkEnableOption "hedgedoc";

  config = lib.mkIf config.hedgedoc.enable {
    kubernetes.resources = {
      configMaps.hedgedoc-config.data.config = lib.generators.toJSON {} {
        useSSL = false;
      };

      secrets.hedgedoc.stringData = {
        databaseURL = "ref+sops://secrets.yml#/hedgedoc/databaseURL";
        sessionSecret = "ref+sops://secrets.yml#/hedgedoc/sessionSecret";
        databasePassword = "ref+sops://secrets.yml#/hedgedoc/databasePassword";
      };

      deployments = {
        server.spec = {
          selector.matchLabels = {
            app = "hedgedoc";
            component = "website";
          };

          strategy = {
            type = "RollingUpdate";

            rollingUpdate = {
              maxSurge = 0;
              maxUnavailable = 1;
            };
          };

          template = {
            metadata.labels = {
              app = "hedgedoc";
              component = "website";
            };

            spec = {
              containers.hedgedoc = {
                image = globals.images.hedgedoc;
                ports.web.containerPort = 3000;

                env = {
                  CMD_DOMAIN.value = "md.kun.is";
                  CMD_PORT.value = "3000";
                  CMD_URL_ADDPORT.value = "false";
                  CMD_ALLOW_ANONYMOUS.value = "true";
                  CMD_ALLOW_EMAIL_REGISTER.value = "false";
                  CMD_PROTOCOL_USESSL.value = "true";
                  CMD_CSP_ENABLE.value = "false";

                  CMD_DB_URL.valueFrom.secretKeyRef = {
                    name = "hedgedoc";
                    key = "databaseURL";
                  };

                  CMD_SESSION_SECRET.valueFrom.secretKeyRef = {
                    name = "hedgedoc";
                    key = "sessionSecret";
                  };
                };

                volumeMounts = [
                  {
                    name = "uploads";
                    mountPath = "/hedgedoc/public/uploads";
                  }
                  {
                    name = "config";
                    mountPath = "/hedgedoc/config.json";
                    subPath = "config";
                  }
                ];
              };

              volumes = {
                uploads.persistentVolumeClaim.claimName = "uploads";
                config.configMap.name = "hedgedoc-config";
              };

              securityContext = {
                fsGroup = 65534;
                fsGroupChangePolicy = "OnRootMismatch";
              };
            };
          };
        };

        database.spec = {
          selector.matchLabels = {
            app = "hedgedoc";
            component = "database";
          };

          strategy = {
            type = "RollingUpdate";

            rollingUpdate = {
              maxSurge = 0;
              maxUnavailable = 1;
            };
          };

          template = {
            metadata.labels = {
              app = "hedgedoc";
              component = "database";
            };

            spec = {
              containers.postgres = {
                image = globals.images.postgres15;
                imagePullPolicy = "IfNotPresent";
                ports.postgres.containerPort = 5432;

                env = {
                  POSTGRES_DB.value = "hedgedoc";
                  POSTGRES_USER.value = "hedgedoc";
                  PGDATA.value = "/pgdata/data";

                  POSTGRES_PASSWORD.valueFrom.secretKeyRef = {
                    name = "hedgedoc";
                    key = "databasePassword";
                  };
                };

                volumeMounts = [
                  {
                    name = "database";
                    mountPath = "/pgdata";
                  }
                ];
              };

              volumes.database.persistentVolumeClaim.claimName = "database";
            };
          };
        };
      };

      services = {
        server.spec = {
          selector = {
            app = "hedgedoc";
            component = "website";
          };

          ports.web = {
            port = 80;
            targetPort = "web";
          };
        };

        database.spec = {
          selector = {
            app = "hedgedoc";
            component = "database";
          };

          ports.postgres = {
            port = 5432;
            targetPort = "postgres";
          };
        };
      };
    };

    lab = {
      ingresses.web = {
        host = "md.kun.is";

        service = {
          name = "server";
          portName = "web";
        };
      };

      longhorn.persistentVolumeClaim = {
        uploads = {
          volumeName = "hedgedoc-uploads";
          storage = "50Mi";
        };

        database = {
          volumeName = "hedgedoc-db";
          storage = "100Mi";
        };
      };
    };
  };
}