import * as types from "constants/action_types";
import lbry from "lbry";

const currentPath = () => {
  const hash = document.location.hash;
  if (hash !== "") return hash.split("#")[1];
  else return "/discover";
};

const reducers = {};
const defaultState = {
  isLoaded: false,
  currentPath: currentPath(),
  platform: process.platform,
  upgradeSkipped: sessionStorage.getItem("upgradeSkipped"),
  daemonReady: false,
  obscureNsfw: !lbry.getClientSetting("showNsfw"),
  hasSignature: false,
};

reducers[types.DAEMON_READY] = function(state, action) {
  return Object.assign({}, state, {
    daemonReady: true,
  });
};

reducers[types.CHANGE_PATH] = function(state, action) {
  return Object.assign({}, state, {
    currentPath: action.data.path,
  });
};

reducers[types.UPGRADE_CANCELLED] = function(state, action) {
  return Object.assign({}, state, {
    downloadProgress: null,
    upgradeDownloadComplete: false,
    modal: null,
  });
};

reducers[types.UPGRADE_DOWNLOAD_COMPLETED] = function(state, action) {
  return Object.assign({}, state, {
    downloadPath: action.data.path,
    upgradeDownloading: false,
    upgradeDownloadCompleted: true,
  });
};

reducers[types.UPGRADE_DOWNLOAD_STARTED] = function(state, action) {
  return Object.assign({}, state, {
    upgradeDownloading: true,
  });
};

reducers[types.SKIP_UPGRADE] = function(state, action) {
  sessionStorage.setItem("upgradeSkipped", true);

  return Object.assign({}, state, {
    upgradeSkipped: true,
    modal: null,
  });
};

reducers[types.UPDATE_VERSION] = function(state, action) {
  return Object.assign({}, state, {
    version: action.data.version,
  });
};

reducers[types.OPEN_MODAL] = function(state, action) {
  return Object.assign({}, state, {
    modal: action.data.modal,
    modalExtraContent: action.data.extraContent,
  });
};

reducers[types.CLOSE_MODAL] = function(state, action) {
  return Object.assign({}, state, {
    modal: undefined,
    modalExtraContent: undefined,
  });
};

reducers[types.UPGRADE_DOWNLOAD_PROGRESSED] = function(state, action) {
  return Object.assign({}, state, {
    downloadProgress: action.data.percent,
  });
};

reducers[types.SHOW_SNACKBAR] = function(state, action) {
  const { message, linkText, linkTarget, isError } = action.data;
  const snackBar = Object.assign({}, state.snackBar);
  const snacks = Object.assign([], snackBar.snacks);
  snacks.push({
    message,
    linkText,
    linkTarget,
    isError,
  });
  const newSnackBar = Object.assign({}, snackBar, {
    snacks,
  });

  return Object.assign({}, state, {
    snackBar: newSnackBar,
  });
};

reducers[types.REMOVE_SNACKBAR_SNACK] = function(state, action) {
  const snackBar = Object.assign({}, state.snackBar);
  const snacks = Object.assign([], snackBar.snacks);
  snacks.shift();

  const newSnackBar = Object.assign({}, snackBar, {
    snacks,
  });

  return Object.assign({}, state, {
    snackBar: newSnackBar,
  });
};

export default function reducer(state = defaultState, action) {
  const handler = reducers[action.type];
  if (handler) return handler(state, action);
  return state;
}