module.exports = class {
  onCreate(input) {
    this.state = {
      characters: input.characters,
      modal: null,
    }
  }

  open(modal) {
    this.state.modal = modal
  }

  close() {
    this.state.modal = null
  }

  characterRemoved({id}) {
    this.state.characters = this.state.characters.filter(c => c.id !== id)
  }

  characterEdited(character, patch) {
    const characters = this.state.characters.slice()
    const index = characters.findIndex(c => c.id === character.id)
    if (index === -1) {
      return
    }

    characters[index] = Object.assign({}, characters[index], patch)

    this.state.characters = characters
  }

  characterAdded(character) {
    const index = this.state.characters.findIndex(c => c.id === character.id)
    if (index !== -1) {
      const characters = this.state.characters.slice()
      characters[index] = character
      this.state.characters = characters

      return
    }

    this.state.characters = this.state.characters.concat(character)
  }

  characterNicksChanged(character, nicks) {
    const characters = this.state.characters.slice()
    const index = characters.findIndex(c => c.id === character.id)
    if (index === -1) {
      return
    }

    characters[index] = Object.assign(characters[index], {nicks: nicks.slice(), nick: (nicks[0] || "")})

    this.state.characters = characters
  }
}