import { AlertReducerState as State } from "./interfaces";
import { generateReducer } from "../redux/generate_reducer";
import { SyncBodyContents } from "../sync/actions";
import { TaggedResource, TaggedFbosConfig } from "farmbot";
import { Actions } from "../constants";
import { ReduxAction } from "../redux/interfaces";
import { EditResourceParams } from "../api/interfaces";
import { unpackUUID } from "../util";

type Reducer =
  (state: State, fn: ReduxAction<TaggedResource>) => State;
const DEFAULT: Reducer =
  (s, a) => handleFbosConf(s, a.payload);
const FIRMWARE_MISSING =
  "farmbot_os.firmware.missing";

export const initialState: State = { alerts: {} };

const toggleAlert = (s: State, body: TaggedFbosConfig["body"]) => {
  if (body.firmware_hardware) {
    delete s.alerts[FIRMWARE_MISSING];
  } else {
    s.alerts[FIRMWARE_MISSING] = {
      created_at: 1,
      problem_tag: FIRMWARE_MISSING,
      priority: 500,
      slug: "firmware-missing",
    };
  }
  return s;
};
const handleFbosConf =
  (s: State, resource: TaggedResource): State => {
    return (resource.kind === "FbosConfig") ?
      toggleAlert(s, resource.body) : s;
  };

const pickConfigs = (x: TaggedResource) => x.kind === "FbosConfig";

export const alertsReducer =
  generateReducer<State>(initialState)
    .add<SyncBodyContents<TaggedResource>>(Actions.RESOURCE_READY, (s, a) => {
      const conf = a.payload.body.filter(pickConfigs)[0];

      return (conf) ? handleFbosConf(s, conf) : s;
    })
    .add<TaggedResource[]>(Actions.BATCH_INIT, (s, a) => {
      const conf = a.payload.filter(pickConfigs)[0];

      return conf ? handleFbosConf(s, conf) : s;
    })
    .add<EditResourceParams>(Actions.OVERWRITE_RESOURCE, (s, a) => {
      const x = unpackUUID(a.payload.uuid);
      const y: TaggedResource["body"] = a.payload.update;
      if (x.kind === "FbosConfig") {
        return toggleAlert(s, y as TaggedFbosConfig["body"]);
      }
      return s;
    })
    .add<TaggedResource>(Actions.REFRESH_RESOURCE_OK, DEFAULT)
    .add<TaggedResource>(Actions.SAVE_RESOURCE_OK, DEFAULT)
    .add<TaggedResource>(Actions.SAVE_RESOURCE_START, DEFAULT);