import * as React from 'react'
import { useRef, useCallback, useState, useMemo } from 'react'
import './App.css'
import JqxKanban, { jqx } from 'jqwidgets-scripts/jqwidgets-react-tsx/jqxkanban'

function App() {
    const myKanban = useRef<any>(null)
    const itemIndex = useRef<number>(0)
    const theme = jqx.theme

    const fields = useMemo(
        () => [
            { name: 'id', type: 'string' },
            { name: 'status', map: 'state', type: 'string' },
            { name: 'text', map: 'label', type: 'string' },
            { name: 'tags', type: 'string' },
            { name: 'color', map: 'hex', type: 'string' },
            { name: 'resourceId', type: 'number' }
        ],
        []
    )

    const source = useMemo(
        () => ({
            dataFields: fields,
            dataType: 'array',
            localData: [
                { id: '1161', state: 'new', label: 'Combine Orders', tags: 'orders, combine', hex: '#5dc3f0', resourceId: 3 },
                { id: '1645', state: 'work', label: 'Change Billing Address', tags: 'billing', hex: '#f19b60', resourceId: 1 },
                { id: '9213', state: 'new', label: 'One item added to the cart', tags: 'cart', hex: '#5dc3f0', resourceId: 3 },
                { id: '6546', state: 'done', label: 'Edit Item Price', tags: 'price, edit', hex: '#5dc3f0', resourceId: 4 },
                { id: '9034', state: 'new', label: 'Login 404 issue', tags: 'issue, login', hex: '#6bbd49' }
            ]
        }),
        [fields]
    )

    const resources = useMemo(() => {
        const resourcesSource = {
            dataFields: [
                { name: 'id', type: 'number' },
                { name: 'name', type: 'string' },
                { name: 'image', type: 'string' },
                { name: 'common', type: 'boolean' }
            ],
            dataType: 'array',
            localData: [
                { id: 0, name: 'No name', image: 'https://www.jqwidgets.com/react/images/andrew.png', common: true },
                { id: 1, name: 'Andrew Fuller', image: 'https://www.jqwidgets.com/react/images/andrew.png' },
                { id: 2, name: 'Janet Leverling', image: 'https://www.jqwidgets.com/react/images/janet.png' },
                { id: 3, name: 'Steven Buchanan', image: 'https://www.jqwidgets.com/react/images/steven.png' },
                { id: 4, name: 'Nancy Davolio', image: 'https://www.jqwidgets.com/react/images/nancy.png' },
                { id: 5, name: 'Michael Buchanan', image: 'https://www.jqwidgets.com/react/images/Michael.png' },
                { id: 6, name: 'Margaret Buchanan', image: 'https://www.jqwidgets.com/react/images/margaret.png' },
                { id: 7, name: 'Robert Buchanan', image: 'https://www.jqwidgets.com/react/images/robert.png' },
                { id: 8, name: 'Laura Buchanan', image: 'https://www.jqwidgets.com/react/images/Laura.png' },
                { id: 9, name: 'Laura Buchanan', image: 'https://www.jqwidgets.com/react/images/Anne.png' }
            ]
        }
        return new jqx.dataAdapter(resourcesSource)
    }, [])

    const getIconClassName = useCallback((): string => {
        switch (theme) {
            case 'darkblue':
            case 'black':
            case 'shinyblack':
            case 'ui-le-frog':
            case 'metrodark':
            case 'orange':
            case 'highcontrast':
            case 'ui-sunny':
            case 'ui-darkness':
                return 'jqx-icon-plus-alt-white '
        }
        return 'jqx-icon-plus-alt'
    }, [theme])

    const columns = useMemo(() => [
        { text: 'Backlog', iconClassName: getIconClassName(), dataField: 'new' },
        { text: 'In Progress', iconClassName: getIconClassName(), dataField: 'work' },
        { text: 'Done', iconClassName: getIconClassName(), dataField: 'done' }
    ], [getIconClassName])

    const template =
        '<div class="jqx-kanban-item" id="">'
        + '<div class="jqx-kanban-item-color-status"></div>'
        + '<div style="display: none;" class="jqx-kanban-item-avatar"></div>'
        + '<div class="jqx-icon jqx-icon-close jqx-kanban-item-template-content jqx-kanban-template-icon"></div>'
        + '<div class="jqx-kanban-item-text"></div>'
        + '<div style="display: none;" class="jqx-kanban-item-footer"></div>'
        + '</div>'

    const itemRenderer = useCallback((element: any, item: any, resource: any) => {
        element[0].getElementsByClassName('jqx-kanban-item-color-status')[0].innerHTML = '<span style="line-height: 23px; margin-left: 5px;">' + resource.name + '</span>'
    }, [])

    const [kanbanState] = useState({
        columns,
        itemRenderer,
        resources,
        source: useMemo(() => new jqx.dataAdapter(source), [source]),
        template
    })

    const onItemAttrClicked = useCallback((event: any) => {
        const args = event.args
        if (args.attribute === 'template') {
            myKanban.current!.removeItem(args.item.id)
        }
    }, [])

    const onColumnAttrClicked = useCallback((event: any) => {
        const args = event.args
        if (args.attribute === 'button') {
            args.cancelToggle = true
            if (!args.column.collapsed) {
                const colors = ['#f19b60', '#5dc3f0', '#6bbd49', '#dddddd']
                myKanban.current!.addItem({
                    color: colors[Math.floor(Math.random() * 4)],
                    resourceId: Math.floor(Math.random() * 4),
                    status: args.column.dataField,
                    tags: 'new task',
                    text: '<input placeholder="(No Title)" style="width: 96%; margin-top:2px; border-radius: 3px;' +
                        'border-color: #ddd; line-height:20px; height: 20px;" class="jqx-input" id="newItem' + itemIndex.current + '" value= "" />'
                })

                const id = `newItem${itemIndex.current}`
                const myInput = document.getElementById(id) as HTMLInputElement | null

                if (myInput) {
                    myInput.addEventListener('mousedown', (eventEl: any): void => {
                        eventEl.stopPropagation()
                    })
                    myInput.addEventListener('mouseup', (eventEl: any): void => {
                        eventEl.stopPropagation()
                    })
                    myInput.addEventListener('keydown', (eventEl: any): void => {
                        if (eventEl.keyCode === 13) {
                            const valueElement = `<span>${eventEl.target.value}</span>`
                            eventEl.target.insertAdjacentHTML('beforebegin', valueElement)
                            eventEl.target.remove()
                        }
                    })
                    myInput.focus()
                }
                itemIndex.current++
            }
        }
    }, [])

    return (
        <JqxKanban
            theme="material-purple"
            ref={myKanban}
            onItemAttrClicked={onItemAttrClicked}
            onColumnAttrClicked={onColumnAttrClicked}
            width="100%"
            template={kanbanState.template}
            source={kanbanState.source}
            columns={kanbanState.columns}
            resources={kanbanState.resources}
            itemRenderer={kanbanState.itemRenderer}
            height={600}
        />
    )
}

export default App