Whalebird-desktop-client-mac-linux-windows/src/renderer/store/TimelineSpace/Contents/Notifications.ts

import { ipcRenderer } from 'electron'
import Mastodon, { Notification, Status, Response } from 'megalodon'
import { Module, MutationTree, ActionTree } from 'vuex'
import { RootState } from '@/store'

export interface NotificationsState {
  lazyLoading: boolean,
  heading: boolean,
  notifications: Array<Notification>,
  unreadNotifications: Array<Notification>,
  filter: string
}

const state = (): NotificationsState => ({
  lazyLoading: false,
  heading: true,
  notifications: [],
  unreadNotifications: [],
  filter: ''
})

export const MUTATION_TYPES = {
  CHANGE_LAZY_LOADING: 'changeLazyLoading',
  CHANGE_HEADING: 'changeHeading',
  APPEND_NOTIFICATIONS: 'appendNotifications',
  UPDATE_NOTIFICATIONS: 'updateNotifications',
  MERGE_NOTIFICATIONS: 'mergeNotifications',
  INSERT_NOTIFICATIONS: 'insertNotifications',
  UPDATE_TOOT: 'updateToot',
  CLEAR_NOTIFICATIONS: 'clearNotifications',
  ARCHIVE_NOTIFICATIONS: 'archiveNotifications',
  CHANGE_FILTER: 'changeFilter'
}

const mutations: MutationTree<NotificationsState> = {
  [MUTATION_TYPES.CHANGE_LAZY_LOADING]: (state, value: boolean) => {
    state.lazyLoading = value
  },
  [MUTATION_TYPES.CHANGE_HEADING]: (state, value: boolean) => {
    state.heading = value
  },
  [MUTATION_TYPES.APPEND_NOTIFICATIONS]: (state, notification: Notification) => {
    if (state.heading) {
      state.notifications = [notification].concat(state.notifications)
    } else {
      state.unreadNotifications = [notification].concat(state.unreadNotifications)
    }
  },
  [MUTATION_TYPES.UPDATE_NOTIFICATIONS]: (state, notifications: Array<Notification>) => {
    state.notifications = notifications
  },
  [MUTATION_TYPES.MERGE_NOTIFICATIONS]: (state) => {
    state.notifications = state.unreadNotifications.slice(0, 80).concat(state.notifications)
    state.unreadNotifications = []
  },
  [MUTATION_TYPES.INSERT_NOTIFICATIONS]: (state, notifications: Array<Notification>) => {
    state.notifications = state.notifications.concat(notifications)
  },
  [MUTATION_TYPES.UPDATE_TOOT]: (state, message: Status) => {
    state.notifications = state.notifications.map((notification) => {
      // I want to update toot only mention.
      // Because Toot component don't use status information when other patterns.
      if (notification.status !== null && notification.status.id === message.id) {
        const status = {
          status: message
        }
        return Object.assign(notification, status)
      } else {
        return notification
      }
    })
  },
  [MUTATION_TYPES.CLEAR_NOTIFICATIONS]: (state) => {
    state.notifications = []
  },
  [MUTATION_TYPES.ARCHIVE_NOTIFICATIONS]: (state) => {
    state.notifications = state.notifications.slice(0, 30)
  },
  [MUTATION_TYPES.CHANGE_FILTER]: (state, filter: string) => {
    state.filter = filter
  }
}

const actions: ActionTree<NotificationsState, RootState> = {
  fetchNotifications: async ({ commit, rootState }): Promise<Array<Notification>> => {
    const client = new Mastodon(
      rootState.TimelineSpace.account.accessToken!,
      rootState.TimelineSpace.account.baseURL + '/api/v1'
    )
    const res: Response<Array<Notification>> = await client.get<Array<Notification>>('/notifications', { limit: 30 })

    commit(MUTATION_TYPES.UPDATE_NOTIFICATIONS, res.data)
    return res.data
  },
  lazyFetchNotifications: ({ state, commit, rootState }, lastNotification: Notification): Promise<Array<Notification> | null> => {
    if (state.lazyLoading) {
      return Promise.resolve(null)
    }
    commit(MUTATION_TYPES.CHANGE_LAZY_LOADING, true)
    const client = new Mastodon(
      rootState.TimelineSpace.account.accessToken!,
      rootState.TimelineSpace.account.baseURL + '/api/v1'
    )
    return client.get<Array<Notification>>('/notifications', { max_id: lastNotification.id, limit: 30 })
      .then(res => {
        commit(MUTATION_TYPES.INSERT_NOTIFICATIONS, res.data)
        return res.data
      })
      .finally(() => {
        commit(MUTATION_TYPES.CHANGE_LAZY_LOADING, false)
      })
  },
  resetBadge: () => {
    ipcRenderer.send('reset-badge')
  }
}

const Notifications: Module<NotificationsState, RootState> = {
  namespaced: true,
  state: state,
  mutations: mutations,
  actions: actions
}

export default Notifications