// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
import React from 'react'
import {FormattedMessage} from 'react-intl'

import {Archiver} from '../archiver'
import {ISortOption} from '../blocks/boardView'
import {BlockIcons} from '../blockIcons'
import {IPropertyTemplate} from '../blocks/board'
import {Card, MutableCard} from '../blocks/card'
import {BoardTree} from '../viewModel/boardTree'
import ViewMenu from '../components/viewMenu'
import {CsvExporter} from '../csvExporter'
import {Menu as OldMenu} from '../menu'
import mutator from '../mutator'
import {Utils} from '../utils'
import Menu from '../widgets/menu'
import MenuWrapper from '../widgets/menuWrapper'

import Button from './button'
import {CardDialog} from './cardDialog'
import {Editable} from './editable'
import RootPortal from './rootPortal'
import {TableRow} from './tableRow'

type Props = {
    boardTree?: BoardTree
    showView: (id: string) => void
    showFilter: (el: HTMLElement) => void
    setSearchText: (text: string) => void
}

type State = {
    isHoverOnCover: boolean
    isSearching: boolean
    shownCard?: Card
    viewMenu: boolean
}

class TableComponent extends React.Component<Props, State> {
    private draggedHeaderTemplate: IPropertyTemplate
    private cardIdToRowMap = new Map<string, React.RefObject<TableRow>>()
    private cardIdToFocusOnRender: string
    private searchFieldRef = React.createRef<Editable>()

    constructor(props: Props) {
        super(props)
        this.state = {isHoverOnCover: false, isSearching: Boolean(this.props.boardTree?.getSearchText()), viewMenu: false}
    }

    shouldComponentUpdate(): boolean {
        return true
    }

    componentDidUpdate(prevPros: Props, prevState: State): void {
        if (this.state.isSearching && !prevState.isSearching) {
            this.searchFieldRef.current.focus()
        }
    }

    render(): JSX.Element {
        const {boardTree, showView} = this.props

        if (!boardTree || !boardTree.board) {
            return (
                <div>
                    <FormattedMessage
                        id='TableComponent.loading'
                        defaultMessage='Loading...'
                    />
                </div>
            )
        }

        const {board, cards, activeView} = boardTree

        const hasFilter = activeView.filter && activeView.filter.filters?.length > 0
        const hasSort = activeView.sortOptions.length > 0

        this.cardIdToRowMap.clear()

        return (
            <div className='octo-app'>
                {this.state.shownCard &&
                <RootPortal>
                    <CardDialog
                        boardTree={boardTree}
                        card={this.state.shownCard}
                        onClose={() => this.setState({shownCard: undefined})}
                    />
                </RootPortal>}
                <div className='octo-frame'>
                    <div
                        className='octo-hovercontrols'
                        onMouseOver={() => {
                            this.setState({...this.state, isHoverOnCover: true})
                        }}
                        onMouseLeave={() => {
                            this.setState({...this.state, isHoverOnCover: false})
                        }}
                    >
                        <Button
                            style={{display: (!board.icon && this.state.isHoverOnCover) ? null : 'none'}}
                            onClick={() => {
                                const newIcon = BlockIcons.shared.randomIcon()
                                mutator.changeIcon(board, newIcon)
                            }}
                        >
                            <FormattedMessage
                                id='TableComponent.add-icon'
                                defaultMessage='Add Icon'
                            />
                        </Button>
                    </div>

                    <div className='octo-icontitle'>
                        {board.icon &&
                            <MenuWrapper>
                                <div className='octo-button octo-icon'>{board.icon}</div>
                                <Menu>
                                    <FormattedMessage
                                        id='TableComponent.random-icon'
                                        defaultMessage='Random'
                                    >
                                        {(text: string) => (
                                            <Menu.Text
                                                id='random'
                                                name={text}
                                                onClick={() => mutator.changeIcon(board, BlockIcons.shared.randomIcon())}
                                            />
                                        )}
                                    </FormattedMessage>
                                    <FormattedMessage
                                        id='TableComponent.remove-icon'
                                        defaultMessage='Remove Icon'
                                    >
                                        {(text: string) => (
                                            <Menu.Text
                                                id='remove'
                                                name={text}
                                                onClick={() => mutator.changeIcon(board, undefined, 'remove icon')}
                                            />
                                        )}
                                    </FormattedMessage>
                                </Menu>
                            </MenuWrapper>}
                        <FormattedMessage
                            id='TableComponent.remove-icon'
                            defaultMessage='Remove Icon'
                        >
                            {(placeholder: string) => (
                                <Editable
                                    className='title'
                                    text={board.title}
                                    placeholderText={placeholder}
                                    onChanged={(text) => {
                                        mutator.changeTitle(board, text)
                                    }}
                                />
                            )}
                        </FormattedMessage>
                    </div>

                    <div className='octo-table'>
                        <div className='octo-controls'>
                            <Editable
                                style={{color: '#000000', fontWeight: 600}}
                                text={activeView.title}
                                placeholderText='Untitled View'
                                onChanged={(text) => {
                                    mutator.changeTitle(activeView, text)
                                }}
                            />
                            <MenuWrapper>
                                <div
                                    className='octo-button'
                                    style={{color: '#000000', fontWeight: 600}}
                                >
                                    <div className='imageDropdown'/>
                                </div>
                                <ViewMenu
                                    board={board}
                                    boardTree={boardTree}
                                    showView={showView}
                                />
                            </MenuWrapper>
                            <div className='octo-spacer'/>
                            <MenuWrapper>
                                <div className={'octo-button'}>
                                    <FormattedMessage
                                        id='TableComponent.properties'
                                        defaultMessage='Properties'
                                    />
                                </div>
                                <Menu>
                                    {boardTree.board.cardProperties.map((option) => (
                                        <Menu.Switch
                                            id={option.id}
                                            name={option.name}
                                            isOn={activeView.visiblePropertyIds.includes(option.id)}
                                            onClick={(propertyId: string) => {
                                                const property = boardTree.board.cardProperties.find((o) => o.id === propertyId)
                                                Utils.assertValue(property)
                                                Utils.log(`Toggle property ${property.name}`)

                                                let newVisiblePropertyIds = []
                                                if (activeView.visiblePropertyIds.includes(propertyId)) {
                                                    newVisiblePropertyIds = activeView.visiblePropertyIds.filter((o) => o !== propertyId)
                                                } else {
                                                    newVisiblePropertyIds = [...activeView.visiblePropertyIds, propertyId]
                                                }
                                                mutator.changeViewVisibleProperties(activeView, newVisiblePropertyIds)
                                            }}
                                        />
                                    ))}
                                </Menu>
                            </MenuWrapper>
                            <div
                                className={hasFilter ? 'octo-button active' : 'octo-button'}
                                onClick={(e) => {
                                    this.filterClicked(e)
                                }}
                            >
                                <FormattedMessage
                                    id='TableComponent.filter'
                                    defaultMessage='Filter'
                                />
                            </div>
                            <MenuWrapper>
                                <div className={hasSort ? 'octo-button active' : 'octo-button'}>
                                    <FormattedMessage
                                        id='TableComponent.sort'
                                        defaultMessage='Sort'
                                    />
                                </div>
                                <Menu>
                                    {boardTree.board.cardProperties.map((option) => (
                                        <Menu.Text
                                            id={option.id}
                                            name={option.name}
                                            icon={(activeView.sortOptions[0]?.propertyId === option.id) ? activeView.sortOptions[0].reversed ? 'sortUp' : 'sortDown' : undefined}
                                            onClick={(propertyId: string) => {
                                                let newSortOptions: ISortOption[] = []
                                                if (activeView.sortOptions[0] && activeView.sortOptions[0].propertyId === propertyId) {
                                                    // Already sorting by name, so reverse it
                                                    newSortOptions = [
                                                        {propertyId, reversed: !activeView.sortOptions[0].reversed},
                                                    ]
                                                } else {
                                                    newSortOptions = [
                                                        {propertyId, reversed: false},
                                                    ]
                                                }
                                                mutator.changeViewSortOptions(activeView, newSortOptions)
                                            }}
                                        />
                                    ))}
                                </Menu>
                            </MenuWrapper>
                            {this.state.isSearching &&
                                <FormattedMessage
                                    id='TableComponent.search-text'
                                    defaultMessage='Search text'
                                >
                                    {(placeholder: string) => (
                                        <Editable
                                            ref={this.searchFieldRef}
                                            text={boardTree.getSearchText()}
                                            placeholderText={placeholder}
                                            style={{color: '#000000'}}
                                            onChanged={(text) => {
                                                this.searchChanged(text)
                                            }}
                                            onKeyDown={(e) => {
                                                this.onSearchKeyDown(e)
                                            }}
                                        />
                                    )}
                                </FormattedMessage>}
                            {!this.state.isSearching &&
                                <div
                                    className='octo-button'
                                    onClick={() => {
                                        this.setState({...this.state, isSearching: true})
                                    }}
                                >
                                    <FormattedMessage
                                        id='TableComponent.search'
                                        defaultMessage='Search'
                                    />
                                </div>}
                            <div
                                className='octo-button'
                                onClick={(e) => this.optionsClicked(e)}
                            ><div className='imageOptions'/></div>
                            <div
                                className='octo-button filled'
                                onClick={() => {
                                    this.addCard(true)
                                }}
                            >
                                <FormattedMessage
                                    id='TableComponent.new'
                                    defaultMessage='New'
                                />
                            </div>
                        </div>

                        {/* Main content */}

                        <div className='octo-table-body'>

                            {/* Headers */}

                            <div
                                className='octo-table-header'
                                id='mainBoardHeader'
                            >
                                <div
                                    className='octo-table-cell title-cell'
                                    id='mainBoardHeader'
                                >
                                    <div
                                        className='octo-label'
                                        style={{cursor: 'pointer'}}
                                        onClick={(e) => {
                                            this.headerClicked(e, '__name')
                                        }}
                                    >
                                        <FormattedMessage
                                            id='TableComponent.name'
                                            defaultMessage='Name'
                                        />
                                    </div>
                                </div>

                                {board.cardProperties.
                                    filter((template) => activeView.visiblePropertyIds.includes(template.id)).
                                    map((template) =>
                                        (<div
                                            key={template.id}
                                            className='octo-table-cell'

                                            draggable={true}
                                            onDragStart={() => {
                                                this.draggedHeaderTemplate = template
                                            }}
                                            onDragEnd={() => {
                                                this.draggedHeaderTemplate = undefined
                                            }}

                                            onDragOver={(e) => {
                                                e.preventDefault(); (e.target as HTMLElement).classList.add('dragover')
                                            }}
                                            onDragEnter={(e) => {
                                                e.preventDefault(); (e.target as HTMLElement).classList.add('dragover')
                                            }}
                                            onDragLeave={(e) => {
                                                e.preventDefault(); (e.target as HTMLElement).classList.remove('dragover')
                                            }}
                                            onDrop={(e) => {
                                                e.preventDefault(); (e.target as HTMLElement).classList.remove('dragover'); this.onDropToColumn(template)
                                            }}
                                        >
                                            <div
                                                className='octo-label'
                                                style={{cursor: 'pointer'}}
                                                onClick={(e) => {
                                                    this.headerClicked(e, template.id)
                                                }}
                                            >{template.name}</div>
                                        </div>),
                                    )}
                            </div>

                            {/* Rows, one per card */}

                            {cards.map((card) => {
                                const openButonRef = React.createRef<HTMLDivElement>()
                                const tableRowRef = React.createRef<TableRow>()

                                let focusOnMount = false
                                if (this.cardIdToFocusOnRender && this.cardIdToFocusOnRender === card.id) {
                                    this.cardIdToFocusOnRender = undefined
                                    focusOnMount = true
                                }

                                const tableRow = (<TableRow
                                    key={card.id}
                                    ref={tableRowRef}
                                    boardTree={boardTree}
                                    card={card}
                                    focusOnMount={focusOnMount}
                                    onKeyDown={(e) => {
                                        if (e.keyCode === 13) {
                                            // Enter: Insert new card if on last row
                                            if (cards.length > 0 && cards[cards.length - 1] === card) {
                                                this.addCard(false)
                                            }
                                        }
                                    }}
                                />)

                                this.cardIdToRowMap.set(card.id, tableRowRef)

                                return tableRow
                            })}

                            {/* Add New row */}

                            <div className='octo-table-footer'>
                                <div
                                    className='octo-table-cell'
                                    onClick={() => {
                                        this.addCard()
                                    }}
                                >
                                    <FormattedMessage
                                        id='TableComponent.plus-new'
                                        defaultMessage='+ New'
                                    />
                                </div>
                            </div>
                        </div>
                    </div>
                </div >
            </div >
        )
    }

    private filterClicked(e: React.MouseEvent) {
        this.props.showFilter(e.target as HTMLElement)
    }

    private async optionsClicked(e: React.MouseEvent) {
        const {boardTree} = this.props

        OldMenu.shared.options = [
            {id: 'exportCsv', name: 'Export to CSV'},
            {id: 'exportBoardArchive', name: 'Export board archive'},
        ]

        OldMenu.shared.onMenuClicked = async (id: string) => {
            switch (id) {
            case 'exportCsv': {
                CsvExporter.exportTableCsv(boardTree)
                break
            }
            case 'exportBoardArchive': {
                Archiver.exportBoardTree(boardTree)
                break
            }
            }
        }
        OldMenu.shared.showAtElement(e.target as HTMLElement)
    }

    private async headerClicked(e: React.MouseEvent<HTMLDivElement>, templateId: string) {
        const {boardTree} = this.props
        const {board} = boardTree
        const {activeView} = boardTree

        const options = [
            {id: 'sortAscending', name: 'Sort ascending'},
            {id: 'sortDescending', name: 'Sort descending'},
            {id: 'insertLeft', name: 'Insert left'},
            {id: 'insertRight', name: 'Insert right'},
        ]

        if (templateId !== '__name') {
            options.push({id: 'hide', name: 'Hide'})
            options.push({id: 'duplicate', name: 'Duplicate'})
            options.push({id: 'delete', name: 'Delete'})
        }

        OldMenu.shared.options = options
        OldMenu.shared.onMenuClicked = async (optionId: string, type?: string) => {
            switch (optionId) {
            case 'sortAscending': {
                const newSortOptions = [
                    {propertyId: templateId, reversed: false},
                ]
                await mutator.changeViewSortOptions(activeView, newSortOptions)
                break
            }
            case 'sortDescending': {
                const newSortOptions = [
                    {propertyId: templateId, reversed: true},
                ]
                await mutator.changeViewSortOptions(activeView, newSortOptions)
                break
            }
            case 'insertLeft': {
                if (templateId !== '__name') {
                    const index = board.cardProperties.findIndex((o) => o.id === templateId)
                    await mutator.insertPropertyTemplate(boardTree, index)
                } else {
                    // TODO: Handle name column
                }
                break
            }
            case 'insertRight': {
                if (templateId !== '__name') {
                    const index = board.cardProperties.findIndex((o) => o.id === templateId) + 1
                    await mutator.insertPropertyTemplate(boardTree, index)
                } else {
                    // TODO: Handle name column
                }
                break
            }
            case 'duplicate': {
                await mutator.duplicatePropertyTemplate(boardTree, templateId)
                break
            }
            case 'hide': {
                const newVisiblePropertyIds = activeView.visiblePropertyIds.filter((o) => o !== templateId)
                await mutator.changeViewVisibleProperties(activeView, newVisiblePropertyIds)
                break
            }
            case 'delete': {
                await mutator.deleteProperty(boardTree, templateId)
                break
            }
            default: {
                Utils.assertFailure(`Unexpected menu option: ${optionId}`)
                break
            }
            }
        }
        OldMenu.shared.showAtElement(e.target as HTMLElement)
    }

    private focusOnCardTitle(cardId: string): void {
        const tableRowRef = this.cardIdToRowMap.get(cardId)
        Utils.log(`focusOnCardTitle, ${tableRowRef?.current ?? 'undefined'}`)
        tableRowRef?.current.focusOnTitle()
    }

    private async addCard(show = false) {
        const {boardTree} = this.props

        const card = new MutableCard()
        card.parentId = boardTree.board.id
        card.icon = BlockIcons.shared.randomIcon()
        await mutator.insertBlock(
            card,
            'add card',
            async () => {
                if (show) {
                    this.setState({shownCard: card})
                } else {
                    // Focus on this card's title inline on next render
                    this.cardIdToFocusOnRender = card.id
                }
            },
        )
    }

    private async onDropToColumn(template: IPropertyTemplate) {
        const {draggedHeaderTemplate} = this
        if (!draggedHeaderTemplate) {
            return
        }

        const {boardTree} = this.props
        const {board} = boardTree

        Utils.assertValue(mutator)
        Utils.assertValue(boardTree)

        Utils.log(`ondrop. Source column: ${draggedHeaderTemplate.name}, dest column: ${template.name}`)

        // Move template to new index
        const destIndex = template ? board.cardProperties.indexOf(template) : 0
        await mutator.changePropertyTemplateOrder(board, draggedHeaderTemplate, destIndex)
    }

    private onSearchKeyDown(e: React.KeyboardEvent) {
        if (e.keyCode === 27) { // ESC: Clear search
            this.searchFieldRef.current.text = ''
            this.setState({...this.state, isSearching: false})
            this.props.setSearchText(undefined)
            e.preventDefault()
        }
    }

    private searchChanged(text?: string) {
        this.props.setSearchText(text)
    }
}

export {TableComponent}