import {camelCase} from './helpers.js'
import Element from './Element.js'
import {extend} from './tools.js'
import {isBlank} from './regex.js'

extend(Element, {
  // Dynamic style generator
  css (style, val) {
    let ret = {}
    let i
    if (arguments.length === 0) {
      // get full style as object
      this.node.style.cssText.split(/\s*;\s*/)
        .filter(function (el) { return !!el.length })
        .forEach(function (el) {
        let t = el.split(/\s*:\s*/)
        ret[t[0]] = t[1]
      })
      return ret
    }

    if (arguments.length < 2) {
      // get style properties in the array
      if (Array.isArray(style)) {
        for (let name of style) {
          let cased = camelCase(name)
          ret[cased] = this.node.style(cased)
        }
        return ret
      }

      // get style for property
      if (typeof style === 'string') {
        return this.node.style[camelCase(style)]
      }

      // set styles in object
      if (typeof style === 'object') {
        for (name in style) {
          // set empty string if null/undefined/'' was given
          this.node.style[camelCase(name)] =
            (style[name] == null || isBlank.test(style[name])) ? '' : style[name]
        }
      }
    }

    // set style for property
    if (arguments.length === 2) {
      this.node.style[camelCase(style)] =
        (val == null || isBlank.test(val)) ? '' : val
    }

    return this
  },

  // Show element
  show () {
    return this.css('display', '')
  },

  // Hide element
  hide () {
    return this.css('display', 'none')
  },

  // Is element visible?
  visible () {
    return this.css('display') !== 'none'
  }
})