import React, { Component } from 'react';
import { connect } from 'react-redux';
import { actionCreators } from './actions';
import Input from './Input';
import List from './List';

class App extends Component {
  constructor(props) {
    super(props);
    this.state = {};
    this.onAddTodo = this.onAddTodo.bind(this);
    this.onRemoveTodo = this.onRemoveTodo.bind(this);
  }

  componentWillMount() {
    const { store } = this.props;
    const { todos } = store.getState();
    this.setState({ todos });

    this.unsubscribe = store.subscribe(() => {
      const { todos } = store.getState();
      this.setState({ todos });
    });
  }

  componentWillUnMount() {
    this.unsubscribe();
  }

  onAddTodo(text) {
    const { store } = this.props;
    store.dispatch(actionCreators.addTodo(text));
  }

  onRemoveTodo(index) {
    const { store } = this.props;
    store.dispatch(actionCreators.removeTodo(index));
  }

  render() {
    const { todos } = this.state;

    return (
      <div>
        <h1>Todo List</h1>
        <Input
          placeholder={'Add a todo'}
          handleSubmit={this.onAddTodo}
        />
        <List
          list={todos}
          onClickItem={this.onRemoveTodo}
        />
      </div>
    )
  }
}

const mapStateToProps = (state) => ({
  todos: state.todos,
})

export default connect(mapStateToProps)(App);