import React from 'react'

import Button from '../Button'
import InputBlock from '../inputs/InputBlock'
import StringInput from '../inputs/StringInput'
import SelectInput from '../inputs/SelectInput'
import Modal from './Modal'
import colors from '../../config/colors'

import LayerTypeBlock from '../layers/LayerTypeBlock'
import LayerIdBlock from '../layers/LayerIdBlock'
import LayerSourceBlock from '../layers/LayerSourceBlock'
import LayerSourceLayerBlock from '../layers/LayerSourceLayerBlock'

class AddModal extends React.Component {
  static propTypes = {
    mapStyle: React.PropTypes.object.isRequired,
    onStyleChange: React.PropTypes.func.isRequired,
    isOpen: React.PropTypes.bool.isRequired,
    onOpenToggle: React.PropTypes.func.isRequired,

    // A dict of source id's and the available source layers
    sources: React.PropTypes.object.isRequired,
  }

  addLayer() {
    const changedLayers = this.props.mapStyle.layers.slice(0)
    const layer = {
      id: this.state.id,
      type: this.state.type,
    }

    if(this.state.type !== 'background') {
      layer.source = this.state.source
      if(this.state.type !== 'raster') {
        layer['source-layer'] = this.state['source-layer']
      }
    }

    changedLayers.push(layer)

    const changedStyle = {
      ...this.props.mapStyle,
      layers: changedLayers,
    }

    this.props.onStyleChange(changedStyle)
    this.props.onOpenToggle(false)
  }

  constructor(props) {
    super(props)
    this.state = {
      type: 'fill',
      id: '',
    }

    if(props.sources.length > 0) {
      this.state.source = Object.keys(this.props.sources)[0]
      this.state['source-layer'] = this.props.sources[this.state.source][0]
    }
  }

  componentWillReceiveProps(nextProps) {
    const sourceIds = Object.keys(nextProps.sources)
    if(!this.state.source && sourceIds.length > 0) {
      this.setState({
        source: sourceIds[0],
        'source-layer': this.state['source-layer'] || nextProps.sources[sourceIds[0]][0]
      })
    }
  }


  render() {
    return <Modal
      isOpen={this.props.isOpen}
      onOpenToggle={this.props.onOpenToggle}
      title={'Add Layer'}
    >
      <LayerIdBlock
        value={this.state.id}
        onChange={v => this.setState({ id: v })}
      />
      <LayerTypeBlock
        value={this.state.type}
        onChange={v => this.setState({ type: v })}
      />
      {this.state.type !== 'background' &&
      <LayerSourceBlock
        sourceIds={Object.keys(this.props.sources)}
        value={this.state.source}
        onChange={v => this.setState({ source: v })}
      />
      }
      {this.state.type !== 'background' && this.state.type !== 'raster' &&
      <LayerSourceLayerBlock
        sourceLayerIds={this.props.sources[this.state.source] || []}
        value={this.state['source-layer']}
        onChange={v => this.setState({ 'source-layer': v })}
      />
      }
      <Button onClick={this.addLayer.bind(this)}>
        Add Layer
      </Button>
    </Modal>
  }
}

export default AddModal