import { useEffect, useRef, useState, type UIEvent } from 'react';
import { useParams } from 'react-router';

import { AffineEditor } from '@toeverything/components/affine-editor';
import { CollapsibleTitle } from '@toeverything/components/common';
import {
    Activities,
    CalendarHeatmap,
    PageTree,
} from '@toeverything/components/layout';
import {
    MuiBox as Box,
    MuiCircularProgress as CircularProgress,
    styled,
} from '@toeverything/components/ui';
import {
    usePageClientWidth,
    useShowSpaceSidebar,
} from '@toeverything/datasource/state';

import { type BlockEditor } from '@toeverything/components/editor-core';
import { useFlag } from '@toeverything/datasource/feature-flags';
import { CollapsiblePageTree } from './collapsible-page-tree';
import { Tabs } from './components/tabs';
import { TabMap, TAB_TITLE } from './components/tabs/Tabs';
import { TOC } from './components/toc';
import { WorkspaceName } from './workspace-name';

type PageProps = {
    workspace: string;
};

export function Page(props: PageProps) {
    const [activeTab, setActiveTab] = useState(
        TabMap.get(TAB_TITLE.PAGES).value
    );
    const { pageId } = useParams();
    const { showSpaceSidebar, fixedDisplay, setSpaceSidebarVisible } =
        useShowSpaceSidebar();
    const dailyNotesFlag = useFlag('BooleanDailyNotes', false);
    const onTabChange = v => setActiveTab(v);

    return (
        <LigoApp>
            <LigoLeftContainer style={{ width: fixedDisplay ? '300px' : 0 }}>
                <WorkspaceSidebar
                    style={{
                        opacity: !showSpaceSidebar && !fixedDisplay ? 0 : 1,
                        transform:
                            !showSpaceSidebar && !fixedDisplay
                                ? 'translateX(-270px)'
                                : 'translateX(0px)',
                        transition: '0.8s',
                    }}
                    onMouseEnter={() => setSpaceSidebarVisible(true)}
                    onMouseLeave={() => setSpaceSidebarVisible(false)}
                >
                    <WorkspaceName />

                    <Tabs activeTab={activeTab} onTabChange={onTabChange} />

                    <WorkspaceSidebarContent>
                        {activeTab === TabMap.get(TAB_TITLE.PAGES).value && (
                            <div>
                                {dailyNotesFlag && (
                                    <div>
                                        <CollapsibleTitle title="Daily Notes">
                                            <CalendarHeatmap />
                                        </CollapsibleTitle>
                                    </div>
                                )}
                                <div>
                                    <CollapsibleTitle
                                        title="ACTIVITIES"
                                        initialOpen={false}
                                    >
                                        <Activities />
                                    </CollapsibleTitle>
                                </div>
                                <div>
                                    <CollapsiblePageTree title="PAGES">
                                        {pageId ? <PageTree /> : null}
                                    </CollapsiblePageTree>
                                </div>
                            </div>
                        )}

                        {activeTab === TabMap.get(TAB_TITLE.TOC).value && (
                            <TOC />
                        )}
                        {activeTab === TabMap.get(TAB_TITLE.GALLERY).value && (
                            <StyledTextForGallery>
                                Gallery function coming soon...
                            </StyledTextForGallery>
                        )}
                    </WorkspaceSidebarContent>
                </WorkspaceSidebar>
            </LigoLeftContainer>
            <EditorContainer workspace={props.workspace} pageId={pageId} />
        </LigoApp>
    );
}

const EditorContainer = ({
    pageId,
    workspace,
}: {
    pageId: string;
    workspace: string;
}) => {
    const [lockScroll, setLockScroll] = useState(false);
    const [scrollContainer, setScrollContainer] = useState<HTMLElement>();
    const editorRef = useRef<BlockEditor>();

    const onScroll = (event: UIEvent) => {
        editorRef.current.getHooks().onRootNodeScroll(event);
        editorRef.current.scrollManager.emitScrollEvent(event);
    };

    const { setPageClientWidth } = usePageClientWidth();
    useEffect(() => {
        if (scrollContainer) {
            const obv = new ResizeObserver(e => {
                setPageClientWidth(e[0].contentRect.width);
            });

            obv.observe(scrollContainer);
            return () => obv.disconnect();
        }
    }, [setPageClientWidth, scrollContainer]);

    return (
        <StyledEditorContainer
            lockScroll={lockScroll}
            ref={ref => setScrollContainer(ref)}
            onScroll={onScroll}
        >
            {pageId ? (
                <AffineEditor
                    workspace={workspace}
                    rootBlockId={pageId}
                    ref={editorRef}
                    scrollContainer={scrollContainer}
                    scrollController={{
                        lockScroll: () => setLockScroll(true),
                        unLockScroll: () => setLockScroll(false),
                    }}
                />
            ) : (
                <Box
                    sx={{
                        display: 'flex',
                        justifyContent: 'center',
                        alignItems: 'center',
                        width: '100%',
                    }}
                >
                    <CircularProgress />
                </Box>
            )}
        </StyledEditorContainer>
    );
};

const StyledEditorContainer = styled('div')<{ lockScroll: boolean }>(
    ({ lockScroll }) => {
        return {
            width: '100%',
            overflowY: lockScroll ? 'hidden' : 'auto',
            flex: 'auto',
        };
    }
);

const LigoApp = styled('div')({
    width: '100vw',
    display: 'flex',
    flex: '1 1 0%',
    backgroundColor: 'white',
});

const LigoLeftContainer = styled('div')({
    flex: '0 0 auto',
    position: 'relative',
});

const WorkspaceSidebar = styled('div')(({ theme }) => ({
    position: 'absolute',
    bottom: '48px',
    top: '12px',
    zIndex: 1,
    display: 'flex',
    flexDirection: 'column',
    width: 300,
    minWidth: 300,
    borderRadius: '0px 10px 10px 0px',
    boxShadow: theme.affine.shadows.shadow2,
    backgroundColor: '#FFFFFF',
    transitionProperty: 'left',
    transitionDuration: '0.35s',
    transitionTimingFunction: 'ease',
    padding: '16px 12px',
}));

const WorkspaceSidebarContent = styled('div')({
    flex: 'auto',
    overflow: 'hidden auto',
    marginTop: '18px',
});

const StyledTextForGallery = styled('div')(({ theme }) => {
    return {
        display: 'flex',
        justifyContent: 'center',
        color: theme.affine.palette.menu,
        marginTop: theme.affine.spacing.lgSpacing,
    };
});
