import React from "react"
import Slider from "@mui/material/Slider"
import TextField from "@mui/material/TextField"
import FormControl from "@mui/material/FormControl"
import { makeStyles } from "@mui/styles"

const useStyles = makeStyles((theme) => ({
  root: {
    display: "flex",
    alignItems: "center"
  }
}))

export default (props) => {
  const {
    config,
    placeholder,
    customProps,
    value,
    setValue,
    min,
    max,
    step,
    marks,
    readonly
  } = props
  const classes = useStyles()
  const { defaultSliderWidth } = config.settings

  const handleSliderChange = (_e, newValue) => {
    setValue(newValue)
  }

  const handleInputChange = (e) => {
    let val = e.target.value
    if (val === "" || val === null) val = undefined
    else val = Number(val)
    setValue(val)
  }

  const handleInputBlur = () => {
    // TIP: Fix if typed value out of range in input
    if (value < min) {
      setValue(min)
    } else if (value > max) {
      setValue(max)
    }
  }

  const { width, ...rest } = customProps || {}
  const customInputProps = rest.input || {}
  const customSliderProps = rest.slider || rest

  // TIP: Can't pass undefined to MUI, cause it means uncontrolled component use.
  //      For empty value input needs "", slider needs null or 0
  const inputValue = typeof value === "number" ? value : ""
  const sliderValue = typeof value === "number" ? value : null

  // marks example: { 0: "0%", 100: React.createElement('strong', null, "100%") }
  const muiMarks = marks
    ? Boolean(Object.keys(marks).map((v) => ({ value: v, label: marks[v] })))
    : false

  const InputCmp = (
    <TextField
      type="number"
      value={inputValue}
      placeholder={placeholder}
      InputProps={{
        readOnly: readonly
      }}
      inputProps={{
        min: min,
        max: max,
        step: step
      }}
      disabled={readonly}
      onChange={handleInputChange}
      onBlur={handleInputBlur}
      {...customInputProps}
    />
  )

  const SliderCmp = (
    <Slider
      value={sliderValue}
      onChange={handleSliderChange}
      disabled={readonly}
      min={min}
      max={max}
      step={step}
      marks={muiMarks}
      valueLabelDisplay="auto"
      {...customSliderProps}
    />
  )

  const stylesWrapper = {
    display: "inline-flex",
    alignItems: "center"
  }

  const stylesInputWrapper = {
    marginLeft: "5px"
  }

  const stylesSliderWrapper = {
    marginLeft: "5px",
    paddingLeft: "12px",
    marginBottom: muiMarks && "-16px",
    width: width || defaultSliderWidth
  }

  return (
    <FormControl>
      <div className={classes.root}>
        <div style={stylesInputWrapper}>{InputCmp}</div>
        <div style={stylesSliderWrapper}>{SliderCmp}</div>
      </div>
    </FormControl>
  )
}