var React = require('react');
var StylePropable = require('./mixins/style-propable');
var Transitions = require('./styles/transitions');
var ColorManipulator = require('./utils/color-manipulator');
var EnhancedButton = require('./enhanced-button');
var FontIcon = require('./font-icon');
var Paper = require('./paper');

var getZDepth = function(disabled) {
  var zDepth = disabled ? 0 : 2;
  return {
    zDepth: zDepth,
    initialZDepth: zDepth
  };
};

var RaisedButton = React.createClass({

  mixins: [StylePropable],

  contextTypes: {
    muiTheme: React.PropTypes.object
  },

  propTypes: {
    iconClassName: React.PropTypes.string,
    iconStyle: React.PropTypes.object,
    mini: React.PropTypes.bool,
    onMouseDown: React.PropTypes.func,
    onMouseUp: React.PropTypes.func,
    onMouseOut: React.PropTypes.func,
    onTouchEnd: React.PropTypes.func,
    onTouchStart: React.PropTypes.func,
    secondary: React.PropTypes.bool
  },

  getInitialState: function() {
    var zDepth = this.props.disabled ? 0 : 2;
    return {
      zDepth: zDepth,
      initialZDepth: zDepth,
      hovered: false,
    };
  },

  componentWillMount: function() {
    this.setState(getZDepth(this.props.disabled));
  },

  componentWillReceiveProps: function(newProps) {
    if(newProps.disabled !== this.props.disabled){
      this.setState(getZDepth(newProps.disabled));
    }
  },

  componentDidMount: function() {
    if (process.env.NODE_ENV !== 'production') {
      if (this.props.iconClassName && this.props.children) {
        var warning = 'You have set both an iconClassName and a child icon. ' +
                      'It is recommended you use only one method when adding ' +
                      'icons to FloatingActionButtons.';
        console.warn(warning);
      }
    }
  },

  _getBackgroundColor: function() {
    return  this.props.disabled ? this.getTheme().disabledColor :
            this.props.secondary ? this.getTheme().secondaryColor :
            this.getTheme().color;
  },


  getTheme: function() {
    return this.context.muiTheme.component.floatingActionButton;
  },

  _getIconColor: function() {
    return  this.props.disabled ? this.getTheme().disabledTextColor :
            this.props.secondary ? this.getTheme().secondaryIconColor :
            this.getTheme().iconColor;
  },

  getStyles: function() {
    var styles = {
      root: {
        transition: Transitions.easeOut(),
        display: 'inline-block'
      },
      container: {
        transition: Transitions.easeOut(),
        position: 'relative',
        height: this.getTheme().buttonSize,
        width: this.getTheme().buttonSize,
        padding: 0,
        overflow: 'hidden',
        backgroundColor: this._getBackgroundColor(),
        borderRadius: '50%',
        textAlign: 'center',
        verticalAlign: 'bottom',
        //This is need so that ripples do not bleed
        //past border radius.
        //See: http://stackoverflow.com/questions/17298739/css-overflow-hidden-not-working-in-chrome-when-parent-has-border-radius-and-chil
        transform: 'translate3d(0, 0, 0)'
      },
      icon: {
        lineHeight: this.getTheme().buttonSize + 'px',
        fill: this.getTheme().iconColor,
        color: this._getIconColor()
      },
      overlay: {
        transition: Transitions.easeOut(),
        top: 0
      },
      containerWhenMini: {
        height: this.getTheme().miniSize,
        width: this.getTheme().miniSize
      },
      iconWhenMini: {
        lineHeight: this.getTheme().miniSize + 'px'
      },
      overlayWhenHovered: {
        backgroundColor: ColorManipulator.fade(this._getIconColor(), 0.4)
      }
    };
    return styles;
  },

  render: function() {
    var {
      icon,
      mini,
      secondary,
      ...other } = this.props;

    var styles = this.getStyles();

    var iconElement;
    if (this.props.iconClassName) {
      iconElement =
        <FontIcon
          className={this.props.iconClassName}
          style={this.mergeAndPrefix(
            styles.icon,
            this.props.mini && styles.iconWhenMini,
            this.props.iconStyle)}/>
    }

    var rippleColor = styles.icon.color;

    return (
      <Paper
        style={this.mergeAndPrefix(styles.root, this.props.style)}
        zDepth={this.state.zDepth}
        circle={true}>

        <EnhancedButton {...other}
          ref="container"
          style={this.mergeAndPrefix(
            styles.container,
            this.props.mini && styles.containerWhenMini
          )}
          onMouseDown={this._handleMouseDown}
          onMouseUp={this._handleMouseUp}
          onMouseOut={this._handleMouseOut}
          onMouseOver={this._handleMouseOver}
          onTouchStart={this._handleTouchStart}
          onTouchEnd={this._handleTouchEnd}
          focusRippleColor={rippleColor}
          touchRippleColor={rippleColor}
          onKeyboardFocus={this._handleKeyboardFocus}>
            <div
              ref="overlay"
              style={this.mergeAndPrefix(
                styles.overlay,
                (this.state.hovered && !this.props.disabled) && styles.overlayWhenHovered
              )}>
                {iconElement}
                {this.props.children}
            </div>
        </EnhancedButton>
      </Paper>
    );
  },

  _handleMouseDown: function(e) {
    //only listen to left clicks
    if (e.button === 0) {
      this.setState({ zDepth: this.state.initialZDepth + 1 });
    }
    if (this.props.onMouseDown) this.props.onMouseDown(e);
  },

  _handleMouseUp: function(e) {
    this.setState({ zDepth: this.state.initialZDepth });
    if (this.props.onMouseUp) this.props.onMouseUp(e);
  },

  _handleMouseOut: function(e) {
    if (!this.refs.container.isKeyboardFocused()) this.setState({ zDepth: this.state.initialZDepth, hovered: false });
    if (this.props.onMouseOut) this.props.onMouseOut(e);
  },

  _handleMouseOver: function(e) {
    if (!this.refs.container.isKeyboardFocused()) this.setState({hovered: true});
    if (this.props.onMouseOver) this.props.onMouseOver(e);
  },

  _handleTouchStart: function(e) {
    this.setState({ zDepth: this.state.initialZDepth + 1 });
    if (this.props.onTouchStart) this.props.onTouchStart(e);
  },

  _handleTouchEnd: function(e) {
    this.setState({ zDepth: this.state.initialZDepth });
    if (this.props.onTouchEnd) this.props.onTouchEnd(e);
  },

  _handleKeyboardFocus: function(e, keyboardFocused) {
    if (keyboardFocused && !this.props.disabled) {
      this.setState({ zDepth: this.state.initialZDepth + 1 });
      React.findDOMNode(this.refs.overlay).style.backgroundColor = ColorManipulator.fade(this.getStyles().icon.color, 0.4);
    } else if (!this.state.hovered) {
      this.setState({ zDepth: this.state.initialZDepth });
      React.findDOMNode(this.refs.overlay).style.backgroundColor = 'transparent';
    }
  },

});

module.exports = RaisedButton;