import {
    Box,
    IconButton,
    Link,
    List,
    ListItem,
    ListItemButton,
    Typography,
} from '@mui/material';
import { Badge } from '../common/Badge/Badge';
import { ProjectIcon } from '../common/ProjectIcon/ProjectIcon';
import LinkIcon from '@mui/icons-material/ArrowForward';
import { ProjectSetupComplete } from './ProjectSetupComplete';
import { ConnectSDK, CreateFlag, ExistingFlag } from './ConnectSDK';
import { LatestProjectEvents } from './LatestProjectEvents';
import { RoleAndOwnerInfo } from './RoleAndOwnerInfo';
import { forwardRef, useEffect, useRef, type FC } from 'react';
import { StyledCardTitle } from './PersonalDashboard';
import type {
    PersonalDashboardProjectDetailsSchema,
    PersonalDashboardSchemaAdminsItem,
    PersonalDashboardSchemaProjectsItem,
} from '../../openapi';
import {
    ContentGridContainer,
    EmptyGridItem,
    ListItemBox,
    listItemStyle,
    ProjectGrid,
    GridItem,
    SpacedGridItem,
} from './Grid';
import { ContactAdmins, DataError } from './ProjectDetailsError';

const ActiveProjectDetails: FC<{
    project: PersonalDashboardSchemaProjectsItem;
}> = ({ project }) => {
    return (
        <Box sx={{ display: 'flex', gap: 2 }}>
            <Box sx={{ display: 'flex', flexDirection: 'column' }}>
                <Typography variant='subtitle2' color='primary'>
                    {project.featureCount}
                </Typography>
                <Typography variant='caption' color='text.secondary'>
                    flags
                </Typography>
            </Box>
            <Box sx={{ display: 'flex', flexDirection: 'column' }}>
                <Typography variant='subtitle2' color='primary'>
                    {project.memberCount}
                </Typography>
                <Typography variant='caption' color='text.secondary'>
                    members
                </Typography>
            </Box>
            <Box sx={{ display: 'flex', flexDirection: 'column' }}>
                <Typography variant='subtitle2' color='primary'>
                    {project.health}%
                </Typography>
                <Typography variant='caption' color='text.secondary'>
                    health
                </Typography>
            </Box>
        </Box>
    );
};

const ProjectListItem: FC<{
    project: PersonalDashboardSchemaProjectsItem;
    selected: boolean;
    onClick: () => void;
}> = ({ project, selected, onClick }) => {
    const activeProjectRef = useRef<HTMLLIElement>(null);

    useEffect(() => {
        if (activeProjectRef.current) {
            activeProjectRef.current.scrollIntoView({
                block: 'nearest',
                inline: 'start',
            });
        }
    }, []);

    return (
        <ListItem
            disablePadding={true}
            sx={{ mb: 1 }}
            ref={selected ? activeProjectRef : null}
        >
            <ListItemButton
                sx={listItemStyle}
                selected={selected}
                onClick={onClick}
            >
                <ListItemBox>
                    <ProjectIcon color='primary' />
                    <StyledCardTitle>{project.name}</StyledCardTitle>
                    <IconButton
                        component={Link}
                        href={`projects/${project.id}`}
                        size='small'
                        sx={{ ml: 'auto' }}
                    >
                        <LinkIcon titleAccess={`projects/${project.id}`} />
                    </IconButton>
                </ListItemBox>
                {selected ? <ActiveProjectDetails project={project} /> : null}
            </ListItemButton>
        </ListItem>
    );
};

export const MyProjects = forwardRef<
    HTMLDivElement,
    {
        projects: PersonalDashboardSchemaProjectsItem[];
        personalDashboardProjectDetails?: PersonalDashboardProjectDetailsSchema;
        activeProject: string;
        setActiveProject: (project: string) => void;
        admins: PersonalDashboardSchemaAdminsItem[];
    }
>(
    (
        {
            projects,
            personalDashboardProjectDetails,
            setActiveProject,
            activeProject,
            admins,
        },
        ref,
    ) => {
        const activeProjectStage =
            personalDashboardProjectDetails?.onboardingStatus.status ??
            'loading';
        const setupIncomplete =
            activeProjectStage === 'onboarding-started' ||
            activeProjectStage === 'first-flag-created';

        const error = personalDashboardProjectDetails === undefined;

        const box1Content = () => {
            if (error) {
                return <DataError project={activeProject} />;
            }

            if (
                activeProjectStage === 'onboarded' &&
                personalDashboardProjectDetails
            ) {
                return (
                    <ProjectSetupComplete
                        project={activeProject}
                        insights={personalDashboardProjectDetails.insights}
                    />
                );
            } else if (
                activeProjectStage === 'onboarding-started' ||
                activeProjectStage === 'loading'
            ) {
                return <CreateFlag project={activeProject} />;
            } else if (activeProjectStage === 'first-flag-created') {
                return <ExistingFlag project={activeProject} />;
            }
        };

        const box2Content = () => {
            if (error) {
                return <ContactAdmins admins={admins} />;
            }

            if (
                activeProjectStage === 'onboarded' &&
                personalDashboardProjectDetails
            ) {
                return (
                    <LatestProjectEvents
                        latestEvents={
                            personalDashboardProjectDetails.latestEvents
                        }
                    />
                );
            }

            if (setupIncomplete || activeProjectStage === 'loading') {
                return <ConnectSDK project={activeProject} />;
            }
        };

        return (
            <ContentGridContainer ref={ref}>
                <ProjectGrid>
                    <GridItem gridArea='title'>
                        <Typography variant='h3'>My projects</Typography>
                    </GridItem>
                    <GridItem
                        gridArea='onboarding'
                        sx={{
                            display: 'flex',
                            justifyContent: 'flex-end',
                        }}
                    >
                        {setupIncomplete ? (
                            <Badge color='warning'>Setup incomplete</Badge>
                        ) : null}
                        {error ? (
                            <Badge color='error'>Setup state unknown</Badge>
                        ) : null}
                    </GridItem>
                    <SpacedGridItem gridArea='projects'>
                        <List
                            disablePadding={true}
                            sx={{ maxHeight: '400px', overflow: 'auto' }}
                        >
                            {projects.map((project) => (
                                <ProjectListItem
                                    key={project.id}
                                    project={project}
                                    selected={project.id === activeProject}
                                    onClick={() => setActiveProject(project.id)}
                                />
                            ))}
                        </List>
                    </SpacedGridItem>
                    <SpacedGridItem gridArea='box1'>
                        {box1Content()}
                    </SpacedGridItem>
                    <SpacedGridItem gridArea='box2'>
                        {box2Content()}
                    </SpacedGridItem>
                    <EmptyGridItem />
                    <GridItem gridArea='owners'>
                        <RoleAndOwnerInfo
                            roles={
                                personalDashboardProjectDetails?.roles.map(
                                    (role) => role.name,
                                ) ?? []
                            }
                            owners={
                                personalDashboardProjectDetails?.owners ?? [
                                    { ownerType: 'user', name: '?' },
                                ]
                            }
                        />
                    </GridItem>
                </ProjectGrid>
            </ContentGridContainer>
        );
    },
);