trusted-setup-server/store/user.js

const state = () => {
  return {
    name: null,
    handle: 'Anonymous',
    company: '',
    contributionType: null,
    contributionIndex: null
  }
}

const mutations = {
  SET_NAME(state, name) {
    state.name = name
  },
  SET_HANDLE(state, handle) {
    state.handle = handle
  },
  SET_COMPANY(state, company) {
    state.company = company
  },
  SET_CONTRIBUTION_TYPE(state, contributionType) {
    state.contributionType = contributionType
  },
  SET_CONTRIBUTION_INDEX(state, contributionIndex) {
    state.contributionIndex = contributionIndex
  }
}

const getters = {
  isLoggedIn: (state) => {
    return state.name !== null && state.name !== 'Anonymous'
  },
  hasErrorName: (state) => {
    const name = state.name
    if (name === null) {
      return { invalid: false, msg: '' }
    }
    if (name === '') {
      return { invalid: true, msg: 'Name is empty' }
    }
    if (name.length < 4) {
      return { invalid: true, msg: 'Name is too short' }
    }
    if (name.length > 35) {
      return { invalid: true, msg: 'Name is too long' }
    }
    return { invalid: false, msg: '' }
  }
}

const actions = {
  twitterLogIn() {
    window.location.replace('/api/connect')
  },
  makeTweet({ state }) {
    const tweetText = `Just made the contribution %23${state.contributionIndex} to Tornado.cash Trusted Setup Ceremony! 🚀`
    const popUpWindowWidth = 600
    const popUpWindowHeight = 250
    const dualScreenLeft = window.screenLeft !== undefined ? window.screenLeft : window.screenX
    const dualScreenTop = window.screenTop !== undefined ? window.screenTop : window.screenY

    const width = window.innerWidth
      ? window.innerWidth
      : document.documentElement.clientWidth
      ? document.documentElement.clientWidth
      : screen.width
    const height = window.innerHeight
      ? window.innerHeight
      : document.documentElement.clientHeight
      ? document.documentElement.clientHeight
      : screen.height

    const systemZoom = width / window.screen.availWidth
    const left = (width - popUpWindowWidth) / 2 / systemZoom + dualScreenLeft
    const top = (height - popUpWindowHeight) / 2 / systemZoom + dualScreenTop
    window.open(
      `https://twitter.com/intent/tweet?text=${tweetText}`,
      '',
      `menubar=no,toolbar=no,resizable=yes,scrollbars=no,height=${popUpWindowHeight},width=${popUpWindowWidth},top=${top},left=${left}`
    )
  },
  async logOut() {
    await fetch('/api/logout')
  }
}

export default {
  namespaced: true,
  state,
  getters,
  mutations,
  actions
}