import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
import { Button, ColorPicker, EditableText, FontSize, IconButton, Size, Type } from 'browndash-components';
import { action, computed, observable } from 'mobx';
import { observer } from 'mobx-react';
import * as React from 'react';
import { FaPlus } from 'react-icons/fa';
import { Doc, DocListCast, DocListCastAsync } from '../../fields/Doc';
import { AclPrivate, DocAcl } from '../../fields/DocSymbols';
import { Id } from '../../fields/FieldSymbols';
import { List } from '../../fields/List';
import { PrefetchProxy } from '../../fields/Proxy';
import { listSpec } from '../../fields/Schema';
import { ScriptField } from '../../fields/ScriptField';
import { Cast, ImageCast, StrCast } from '../../fields/Types';
import { DocServer } from '../DocServer';
import { Docs, DocumentOptions, DocUtils } from '../documents/Documents';
import { CollectionViewType } from '../documents/DocumentTypes';
import { HistoryUtil } from '../util/History';
import { ScriptingGlobals } from '../util/ScriptingGlobals';
import { SharingManager } from '../util/SharingManager';
import { undoBatch } from '../util/UndoManager';
import { CollectionDockingView } from './collections/CollectionDockingView';
import { CollectionView } from './collections/CollectionView';
import { ContextMenu } from './ContextMenu';
import './DashboardView.scss';
import { Colors } from './global/globalEnums';
import { MainViewModal } from './MainViewModal';
import { ButtonType } from './nodes/FontIconBox/FontIconBox';

enum DashboardGroup {
    MyDashboards,
    SharedDashboards,
}

// DashboardView is the view with the dashboard previews, rendered when the app first loads

@observer
export class DashboardView extends React.Component {
    //TODO: delete dashboard, share dashboard, etc.

    public static _urlState: HistoryUtil.DocUrl;

    @observable private selectedDashboardGroup = DashboardGroup.MyDashboards;

    @observable private newDashboardName: string | undefined = undefined;
    @observable private newDashboardColor: string | undefined = "#AFAFAF";
    @action abortCreateNewDashboard = () => {
        this.newDashboardName = undefined;
    };
    @action setNewDashboardName(name: string) {
        this.newDashboardName = name;
    }
    @action setNewDashboardColor(color: string) {
        this.newDashboardColor = color;
    }

    @action
    selectDashboardGroup = (group: DashboardGroup) => {
        this.selectedDashboardGroup = group;
    };

    clickDashboard = (e: React.MouseEvent, dashboard: Doc) => {
        if (this.selectedDashboardGroup === DashboardGroup.SharedDashboards) {
            DashboardView.openSharedDashboard(dashboard);
        } else {
            Doc.ActiveDashboard = dashboard;
        }
        Doc.ActivePage = 'dashboard';
    };

    getDashboards = (whichGroup: DashboardGroup) => {
        const allDashboards = DocListCast(Doc.MyDashboards.data);
        if (whichGroup === DashboardGroup.MyDashboards) {
            return allDashboards.filter(dashboard => Doc.GetProto(dashboard).author === Doc.CurrentUserEmail);
        }
        const sharedDashboards = DocListCast(Doc.MySharedDocs.data_dashboards).filter(doc => doc.dockingConfig);
        return sharedDashboards;
    };

    isUnviewedSharedDashboard = (dashboard: Doc): boolean => {
        // const sharedDashboards = DocListCast(Doc.MySharedDocs.data_dashboards).filter(doc => doc._type_collection === CollectionViewType.Docking);
        return !DocListCast(Doc.MySharedDocs.viewed).includes(dashboard);
    };

    getSharedDashboards = () => {
        const sharedDashs = DocListCast(Doc.MySharedDocs.data_dashboards).filter(doc => doc._type_collection === CollectionViewType.Docking);
        return sharedDashs.filter(dashboard => !DocListCast(Doc.MySharedDocs.viewed).includes(dashboard));
    };

    @undoBatch
    createNewDashboard = async (name: string, background?: string) => {
        setTimeout(() => {
            this.abortCreateNewDashboard();
        }, 100);
        DashboardView.createNewDashboard(undefined, name, background);
    };

    @computed
    get namingInterface() {
        const dashboardCount = DocListCast(Doc.MyDashboards.data).length + 1;
        const placeholder = `Dashboard ${dashboardCount}`;
        return (
            <div className="new-dashboard"
                style={{ 
                    background: StrCast(Doc.UserDoc().userBackgroundColor),
                    color: StrCast(Doc.UserDoc().userColor)
                }}
            >
                <div className="header">Create New Dashboard</div>
                <EditableText 
                    formLabel='Title'
                    placeholder={placeholder}
                    type={Type.SEC}
                    color={StrCast(Doc.UserDoc().userColor)}
                    setVal={val => this.setNewDashboardName(val as string)}
                    fillWidth
                />
                <ColorPicker
                    formLabel='Background'
                    colorPickerType='github'
                    type={Type.TERT}
                    selectedColor={this.newDashboardColor}
                    setSelectedColor={color => {
                        this.setNewDashboardColor(color);
                    }}
                />
                <div className="button-bar">
                    <Button text="Cancel" color={StrCast(Doc.UserDoc().userColor)} onClick={this.abortCreateNewDashboard} />
                    <Button type={Type.TERT} text="Create" color={StrCast(Doc.UserDoc().userVariantColor)} onClick={() => this.createNewDashboard(this.newDashboardName!, this.newDashboardColor)} />
                </div>
            </div>
        );
    }

    _downX: number = 0;
    _downY: number = 0;
    @action
    onContextMenu = (dashboard: Doc, e?: React.MouseEvent, pageX?: number, pageY?: number) => {
        // the touch onContextMenu is button 0, the pointer onContextMenu is button 2
        if (e) {
            e.preventDefault();
            e.stopPropagation();
            e.persist();

            if (!navigator.userAgent.includes('Mozilla') && (Math.abs(this._downX - e?.clientX) > 3 || Math.abs(this._downY - e?.clientY) > 3)) {
                return;
            }
            const cm = ContextMenu.Instance;
            cm.addItem({
                description: 'Share Dashboard',
                event: async () => {
                    SharingManager.Instance.open(undefined, dashboard);
                },
                icon: 'edit',
            });
            cm.addItem({
                description: 'Delete Dashboard',
                event: async () => {
                    DashboardView.removeDashboard(dashboard);
                },
                icon: 'trash',
            });
            cm.displayMenu((e?.pageX || pageX || 0) - 15, (e?.pageY || pageY || 0) - 15);
        }
    };

    render() {
        const color = StrCast(Doc.UserDoc().userColor)
        const variant = StrCast(Doc.UserDoc().userVariantColor)
        return (
            <>
                <div className="dashboard-view">
                    <div className="left-menu">
                        <Button 
                            text={'My Dashboards'}
                            active={this.selectedDashboardGroup === DashboardGroup.MyDashboards}
                            color={color}
                            align={'flex-start'}
                            onClick={() => this.selectDashboardGroup(DashboardGroup.MyDashboards)}
                            fillWidth
                        />
                        <Button 
                            text={'Shared Dashboards' + ' (' + this.getDashboards(DashboardGroup.SharedDashboards).length + ')'}
                            active={this.selectedDashboardGroup === DashboardGroup.SharedDashboards}
                            color={this.getDashboards(DashboardGroup.SharedDashboards).some(dash => !DocListCast(Doc.MySharedDocs.viewed).includes(dash)) ? 'green' : color}
                            align={'flex-start'}
                            onClick={() => this.selectDashboardGroup(DashboardGroup.SharedDashboards)}
                            fillWidth
                        />
                        <Button icon={<FaPlus />} color={variant} iconPlacement="left" text="New Dashboard" type={Type.TERT} onClick={() => this.setNewDashboardName('')} />
                    </div>
                    <div className="all-dashboards">
                        {this.getDashboards(this.selectedDashboardGroup).map(dashboard => {
                            const href = ImageCast(dashboard.thumb)?.url.href;
                            const shared = Object.keys(dashboard[DocAcl])
                                .filter(key => key !== `acl-${Doc.CurrentUserEmailNormalized}` && !['acl-Me', 'acl-Guest'].includes(key))
                                .some(key => dashboard[DocAcl][key] !== AclPrivate);
                            return (
                                <div 
                                    className="dashboard-container" 
                                    key={dashboard[Id]} 
                                    style={{ background: this.isUnviewedSharedDashboard(dashboard) && this.selectedDashboardGroup === DashboardGroup.SharedDashboards ? 'green' : shared ? 'blue' : '' }}
                                    onContextMenu={e => this.onContextMenu(dashboard, e)} 
                                    onClick={e => this.clickDashboard(e, dashboard)}>
                                    <img
                                        src={
                                            href ?? 'https://media.istockphoto.com/photos/hot-air-balloons-flying-over-the-botan-canyon-in-turkey-picture-id1297349747?b=1&k=20&m=1297349747&s=170667a&w=0&h=oH31fJty_4xWl_JQ4OIQWZKP8C6ji9Mz7L4XmEnbqRU='
                                        }
                                    />
                                    <div className="info">
                                        <EditableText 
                                            type={Type.PRIM}
                                            color={color}
                                            val={StrCast(dashboard.title)} 
                                            setVal={val => (Doc.GetProto(dashboard).title = val)}
                                        />
                                        {this.selectedDashboardGroup === DashboardGroup.SharedDashboards && this.isUnviewedSharedDashboard(dashboard) ? <div>unviewed</div> : <div></div>}
                                        <div
                                            className="more"
                                            onPointerDown={e => {
                                                this._downX = e.clientX;
                                                this._downY = e.clientY;
                                            }}
                                            onClick={e => {
                                                e.preventDefault();
                                                e.stopPropagation();
                                                this.onContextMenu(dashboard, e);
                                            }}>
                                            <Button size={Size.SMALL} color={color} icon={<FontAwesomeIcon color={color} icon="bars" />} />
                                        </div>
                                    </div>
                                    <div className={`background`} style={{
                                        background: StrCast(Doc.UserDoc().userColor),
                                        filter: 'opacity(0.2)'
                                    }}/>
                                    <div className={'dashboard-status' + (shared ? '-shared' : '')}>{shared ? 'shared' : ''}</div>
                                </div>
                            );
                        })}
                        <div
                            className="dashboard-container-new"
                            onClick={() => {
                                this.setNewDashboardName('');
                            }}>
                            +
                            <div className={`background`} style={{
                                background: StrCast(Doc.UserDoc().userColor),
                                filter: 'opacity(0.2)'
                            }}/>
                        </div>
                    </div>
                </div>
                <MainViewModal
                    contents={this.namingInterface}
                    isDisplayed={this.newDashboardName !== undefined}
                    interactive={true}
                    closeOnExternalClick={this.abortCreateNewDashboard}
                    dialogueBoxStyle={{ width: '400px', height: '180px', color: Colors.LIGHT_GRAY }}
                />
            </>
        );
    }

    public static closeActiveDashboard() {
        Doc.ActiveDashboard = undefined;
    }
    public static snapshotDashboard() {
        return CollectionDockingView.TakeSnapshot(Doc.ActiveDashboard);
    }

    public static openSharedDashboard = (dashboard: Doc) => {
        Doc.AddDocToList(Doc.MySharedDocs, 'viewed', dashboard);
        DashboardView.openDashboard(Doc.BestEmbedding(dashboard));
    };

    /// opens a dashboard as the ActiveDashboard (and adds the dashboard to the users list of dashboards if it's not already there).
    /// this also sets the readonly state of the dashboard based on the current mode of dash (from its url)
    public static openDashboard = (doc: Doc | undefined, fromHistory = false) => {
        if (!doc) return false;
        Doc.AddDocToList(Doc.MyDashboards, 'data', doc);

        // this has the side-effect of setting the main container since we're assigning the active/guest dashboard
        Doc.UserDoc() ? (Doc.ActiveDashboard = doc) : (Doc.GuestDashboard = doc);

        const state = DashboardView._urlState;
        if (state.sharing === true && !Doc.UserDoc()) {
            DocServer.Control.makeReadOnly();
        } else {
            fromHistory ||
                HistoryUtil.pushState({
                    type: 'doc',
                    docId: doc[Id],
                    readonly: state.readonly,
                    nro: state.nro,
                    sharing: false,
                });
            if (state.readonly === true || state.readonly === null) {
                DocServer.Control.makeReadOnly();
            } else if (state.safe) {
                if (!state.nro) {
                    DocServer.Control.makeReadOnly();
                }
                CollectionView.SetSafeMode(true);
            } else if (state.nro || state.nro === null || state.readonly === false) {
            } else if (doc.readOnly) {
                DocServer.Control.makeReadOnly();
            } else {
                Doc.CurrentUserEmail !== 'guest' && DocServer.Control.makeEditable();
            }
        }

        return true;
    };

    public static removeDashboard = async (dashboard: Doc) => {
        const dashboards = await DocListCastAsync(Doc.MyDashboards.data);
        if (dashboards?.length) {
            if (dashboard === Doc.ActiveDashboard) DashboardView.openDashboard(dashboards.find(doc => doc !== dashboard));
            Doc.RemoveDocFromList(Doc.MyDashboards, 'data', dashboard);
            if (!dashboards.length) Doc.ActivePage = 'home';
        }
    };

    public static resetDashboard = (dashboard: Doc) => {
        const config = StrCast(dashboard.dockingConfig);
        const matches = config.match(/\"documentId\":\"[a-z0-9-]+\"/g);
        const docids = matches?.map(m => m.replace('"documentId":"', '').replace('"', '')) ?? [];

        const components =
            docids.map(docid => ({
                type: 'component',
                component: 'DocumentFrameRenderer',
                title: 'Untitled Tab 1',
                width: 600,
                props: {
                    documentId: docid,
                },
                componentName: 'lm-react-component',
                isClosable: true,
                reorderEnabled: true,
                componentState: null,
            })) ?? [];
        const reset = {
            isClosable: true,
            reorderEnabled: true,
            title: '',
            openPopouts: [],
            maximisedItemId: null,
            settings: {
                hasHeaders: true,
                constrainDragToContainer: true,
                reorderEnabled: true,
                selectionEnabled: false,
                popoutWholeStack: false,
                blockedPopoutsThrowError: true,
                closePopoutsOnUnload: true,
                showPopoutIcon: true,
                showMaximiseIcon: true,
                showCloseIcon: true,
                responsiveMode: 'onload',
                tabOverlapAllowance: 0,
                reorderOnTabMenuClick: false,
                tabControlOffset: 10,
            },
            dimensions: {
                borderWidth: 3,
                borderGrabWidth: 5,
                minItemHeight: 10,
                minItemWidth: 20,
                headerHeight: 27,
                dragProxyWidth: 300,
                dragProxyHeight: 200,
            },
            labels: {
                close: 'close',
                maximise: 'maximise',
                minimise: 'minimise',
                popout: 'new tab',
                popin: 'pop in',
                tabDropdown: 'additional tabs',
            },
            content: [
                {
                    type: 'row',
                    isClosable: true,
                    reorderEnabled: true,
                    title: '',
                    content: [
                        {
                            type: 'stack',
                            width: 100,
                            isClosable: true,
                            reorderEnabled: true,
                            title: '',
                            activeItemIndex: 0,
                            content: components,
                        },
                    ],
                },
            ],
        };
        if (dashboard.dockingConfig && dashboard.dockingConfig !== Doc.GetProto(dashboard).dockingConfig) dashboard.dockingConfig = JSON.stringify(reset);
        else Doc.SetInPlace(dashboard, 'dockingConfig', JSON.stringify(reset), true);
        return reset;
    };

    public static createNewDashboard = (id?: string, name?: string, background?: string) => {
        const dashboardCount = DocListCast(Doc.MyDashboards.data).length + 1;
        const freeformOptions: DocumentOptions = {
            x: 0,
            y: 400,
            _width: 1500,
            _height: 1000,
            _layout_fitWidth: true,
            _freeform_backgroundGrid: true,
            backgroundColor: background,
            title: `Untitled Tab 1`,
        };
        const title = name ? name : `Dashboard ${dashboardCount}`;
        const freeformDoc = Doc.GuestTarget || Docs.Create.FreeformDocument([], freeformOptions);
        const dashboardDoc = Docs.Create.StandardCollectionDockingDocument([{ doc: freeformDoc, initialWidth: 600 }], { title: title }, id, 'row');

        dashboardDoc['pane-count'] = 1;

        Doc.AddDocToList(Doc.MyDashboards, 'data', dashboardDoc);

        DashboardView.SetupDashboardTrails(dashboardDoc);

        // open this new dashboard
        Doc.ActiveDashboard = dashboardDoc;
        Doc.ActivePage = 'dashboard';
        Doc.ActivePresentation = undefined;
    };

    public static SetupDashboardTrails(dashboardDoc: Doc) {
        // this section is creating the button document itself  ===  myTrails = new Button
        const reqdBtnOpts: DocumentOptions = {
            _forceActive: true,
            _width: 30,
            _height: 30,
            _dragOnlyWithinContainer: true,
            _layout_hideContextMenu: true,
            title: 'New trail',
            toolTip: 'Create new trail',
            color: Colors.BLACK,
            btnType: ButtonType.ClickButton,
            buttonText: 'New trail',
            icon: 'plus',
            isSystem: true,
        };
        const reqdBtnScript = { onClick: `createNewPresentation()` };
        const myTrailsBtn = DocUtils.AssignScripts(Docs.Create.FontIconDocument(reqdBtnOpts), reqdBtnScript);

        //  createa a list of presentations (as a tree view collection) and store it on the new dashboard
        // instead of assigning Doc.UserDoc().myrails we want to assign Doc.AxtiveDashboard.myTrails
        // but we don't want to create the list of trails here-- but rather in createDashboard
        const reqdOpts: DocumentOptions = {
            title: 'My Trails',
            _layout_showTitle: 'title',
            _height: 100,
            treeViewHideTitle: true,
            _layout_fitWidth: true,
            _gridGap: 5,
            _forceActive: true,
            childDragAction: 'embed',
            treeViewTruncateTitleWidth: 150,
            ignoreClick: true,
            layout_headerButton: myTrailsBtn,
            contextMenuIcons: new List<string>(['plus']),
            contextMenuLabels: new List<string>(['Create New Trail']),
            _lockedPosition: true,
            layout_boxShadow: '0 0',
            childDontRegisterViews: true,
            dropAction: 'same',
            isSystem: true,
            layout_explainer: 'All of the trails that you have created will appear here.',
        };
        const myTrails = DocUtils.AssignScripts(Docs.Create.TreeDocument([], reqdOpts), { treeViewChildDoubleClick: 'openPresentation(documentView.rootDoc)' });
        dashboardDoc.myTrails = new PrefetchProxy(myTrails);

        const contextMenuScripts = [reqdBtnScript.onClick];
        if (Cast(myTrails.contextMenuScripts, listSpec(ScriptField), null)?.length !== contextMenuScripts.length) {
            myTrails.contextMenuScripts = new List<ScriptField>(contextMenuScripts.map(script => ScriptField.MakeFunction(script)!));
        }
    }
}

ScriptingGlobals.add(function createNewDashboard() {
    return DashboardView.createNewDashboard();
}, 'creates a new dashboard when called');
ScriptingGlobals.add(function shareDashboard(dashboard: Doc) {
    SharingManager.Instance.open(undefined, dashboard);
}, 'opens sharing dialog for Dashboard');
ScriptingGlobals.add(function removeDashboard(dashboard: Doc) {
    DashboardView.removeDashboard(dashboard);
}, 'Remove Dashboard from Dashboards');
ScriptingGlobals.add(function resetDashboard(dashboard: Doc) {
    DashboardView.resetDashboard(dashboard);
}, 'move all dashboard tabs to single stack');
ScriptingGlobals.add(function addToDashboards(dashboard: Doc) {
    DashboardView.openDashboard(Doc.MakeEmbedding(dashboard));
}, 'adds Dashboard to set of Dashboards');
ScriptingGlobals.add(function snapshotDashboard() {
    DashboardView.snapshotDashboard();
}, 'creates a snapshot copy of a dashboard');