import { UpdateForumSettingsMessageComposer } from '@nitrots/nitro-renderer';
import { FC, useCallback, useState } from 'react';
import { LocalizeText, SendMessageComposer } from '../../../../api';
import { Button, Column, Flex, Text } from '../../../../common';
import { ExtendedForumData } from '@nitrots/nitro-renderer';

// Permission levels: 0 = EVERYONE, 1 = MEMBERS, 2 = ADMINS, 3 = OWNER
const PERMISSION_EVERYONE = 0;
const PERMISSION_MEMBERS = 1;
const PERMISSION_ADMINS = 2;
const PERMISSION_OWNER = 3;

interface GroupForumSettingsViewProps
{
    groupId: number;
    forumData: ExtendedForumData;
    onBack: () => void;
}

export const GroupForumSettingsView: FC<GroupForumSettingsViewProps> = props =>
{
    const { groupId = 0, forumData = null, onBack = null } = props;
    const effectiveGroupId = forumData?.groupId || groupId;
    const [ readPermission, setReadPermission ] = useState<number>(forumData?.readPermissions ?? PERMISSION_EVERYONE);
    const [ postMessagePermission, setPostMessagePermission ] = useState<number>(forumData?.postMessagePermissions ?? PERMISSION_MEMBERS);
    const [ postThreadPermission, setPostThreadPermission ] = useState<number>(forumData?.postThreadPermissions ?? PERMISSION_MEMBERS);
    const [ moderatePermission, setModeratePermission ] = useState<number>(forumData?.moderatePermissions ?? PERMISSION_ADMINS);

    const saveSettings = useCallback(() =>
    {
        SendMessageComposer(new UpdateForumSettingsMessageComposer(
            effectiveGroupId,
            readPermission,
            postMessagePermission,
            postThreadPermission,
            moderatePermission
        ));

        onBack();
    }, [ effectiveGroupId, readPermission, postMessagePermission, postThreadPermission, moderatePermission, onBack ]);

    const getPermissionOptions = (includeOwner: boolean = false) =>
    {
        const options = [
            { value: PERMISSION_EVERYONE, label: LocalizeText('groupforum.permissions.option_all') },
            { value: PERMISSION_MEMBERS, label: LocalizeText('groupforum.permissions.option_group_members') },
            { value: PERMISSION_ADMINS, label: LocalizeText('groupforum.permissions.option_group_admins') }
        ];

        if(includeOwner)
        {
            options.push({ value: PERMISSION_OWNER, label: LocalizeText('groupforum.permissions.option_owner') });
        }

        return options;
    };

    return (
        <Column className="h-full p-3" gap={ 3 }>
            <Flex gap={ 2 } alignItems="center">
                <Text pointer underline onClick={ onBack }>
                    &laquo; { LocalizeText('groupforum.view.back') }
                </Text>
            </Flex>
            <Text bold>{ LocalizeText('groupforum.settings.window_title') }</Text>
            <Column gap={ 2 }>
                <Column gap={ 1 }>
                    <Text bold small>{ LocalizeText('groupforum.permissions.read_label') }</Text>
                    <select className="form-select form-select-sm" value={ readPermission } onChange={ e => setReadPermission(parseInt(e.target.value)) }>
                        { getPermissionOptions().map(opt => (
                            <option key={ opt.value } value={ opt.value }>{ opt.label }</option>
                        )) }
                    </select>
                </Column>
                <Column gap={ 1 }>
                    <Text bold small>{ LocalizeText('groupforum.permissions.post_message_label') }</Text>
                    <select className="form-select form-select-sm" value={ postMessagePermission } onChange={ e => setPostMessagePermission(parseInt(e.target.value)) }>
                        { getPermissionOptions(true).map(opt => (
                            <option key={ opt.value } value={ opt.value }>{ opt.label }</option>
                        )) }
                    </select>
                </Column>
                <Column gap={ 1 }>
                    <Text bold small>{ LocalizeText('groupforum.permissions.post_thread_label') }</Text>
                    <select className="form-select form-select-sm" value={ postThreadPermission } onChange={ e => setPostThreadPermission(parseInt(e.target.value)) }>
                        { getPermissionOptions(true).map(opt => (
                            <option key={ opt.value } value={ opt.value }>{ opt.label }</option>
                        )) }
                    </select>
                </Column>
                <Column gap={ 1 }>
                    <Text bold small>{ LocalizeText('groupforum.permissions.moderate_label') }</Text>
                    <select className="form-select form-select-sm" value={ moderatePermission } onChange={ e => setModeratePermission(parseInt(e.target.value)) }>
                        { [
                            { value: PERMISSION_ADMINS, label: LocalizeText('groupforum.permissions.option_group_admins') },
                            { value: PERMISSION_OWNER, label: LocalizeText('groupforum.permissions.option_owner') }
                        ].map(opt => (
                            <option key={ opt.value } value={ opt.value }>{ opt.label }</option>
                        )) }
                    </select>
                </Column>
            </Column>
            <Flex className="mt-auto" gap={ 2 } justifyContent="end">
                <Button variant="secondary" className="btn-sm" onClick={ onBack }>
                    { LocalizeText('generic.cancel') }
                </Button>
                <Button variant="primary" className="btn-sm" onClick={ saveSettings }>
                    { LocalizeText('groupforum.settings.ok') }
                </Button>
            </Flex>
        </Column>
    );
};
