import React, { useState } from 'react';

import DataTables from './components/DataTables';

import { SidePlane } from './components/SidePlanes'

import ChartsViz from './components/ChartsViz'

import ChartPlane from './components/ChartPlane'

import { read_csv } from 'danfojs/src/io/reader'

function App() {

const [file, setFile ] = useState()

const [dataComp, setDataComp] = useState([])

const [showSidePlane, setSidePlane] = useState(false)

const [compIndex, setCompIndex] = useState()

const [chartType, setChartType] = useState()

const [dfOpsType, setDfOpsType] = useState()

const [chartComp, setChartComp] = useState([])

const changeHandler = function(event) {

const content = event.target.files[0]

const url = URL.createObjectURL(content)

read_csv(url, {start: 0, end: 20}).then(df => {

const columns = df.columns

const values = df.values

setDataComp(prev => {

let new_data = prev.slice()

let key = new_data.length +1

let dict = {

columns: columns,

values: values,

df: df,

keys: "df" + key

}

new_data.push(dict)

return new_data

})

setFile(true);

})

}

const charts = ["BarChart", "LineChart", "PieChart"]

const dataFrameOps = ["Arithemtic","Describe", "Df2df", "Query"]

const handleChart = (e) => {

const value = e.target.innerHTML

setChartType(value)

setSidePlane("chart")

}

const handleDfops = (e) =>{

const value = e.target.value

setDfOpsType(value)

setSidePlane("datatable")

}

return (

<div className="max-w-full mx-auto border-2 mt-10">

<div className="flex flex-col">

<div className="border-2 mb-10 flex flex-row">

<input type="file" name="file" onChange={changeHandler} />

<div className="mr-4">

{

charts.map((chart, i)=>{

return <button

className="bg-blue-500 p-2 text-white rounded-sm mr-2"

onClick={handleChart}

>

{chart}

</button>

})

}

</div>

<div>

<span className="mr-2">DataFrame Operations</span>

<select className="border" onChange={handleDfops}>

<option value="None" >None</option>

{

dataFrameOps.map((dfops, i)=>{

return <option value={dfops} key={i}>{dfops}</option>

})

}

</select>

</div>

</div>

<div className="flex flex-row justify-between border-2">

<div className="border-2 w-full">

<div>

{ file &&

<DataTables

datacomp={dataComp}

setSidePlane={setSidePlane}

setCompIndex={setCompIndex}

/>

}

{ (chartComp.length > 0) &&

<ChartsViz

chartComp={chartComp}

/>

}

</div>

</div>

{showSidePlane

&&

(

showSidePlane === "datatable" ?

<div className="border-2 w-1/3">

<SidePlane

dataComp={dataComp[compIndex]}

dataComps={dataComp}

df_index={compIndex}

setDataComp={setDataComp}

dfOpsType={dfOpsType}

/>

</div> :

<div className="border-2 w-1/3">

<ChartPlane

dataComp={dataComp[compIndex]}

setChartComp={setChartComp}

chartType={chartType}

/>

</div>

)

}

</div>

</div>

</div>

)

}

export default App