import { Group, Stack, Text, Title, useMantineTheme } from '@mantine/core';
import { Dropzone } from '@mantine/dropzone';
import { showNotification } from '@mantine/notifications';
import { IconCheck as Check, IconPhoto, IconUpload, IconX, IconX as X } from '@tabler/icons';
import { setCookie } from 'cookies-next';
import { useTranslation } from 'next-i18next';
import { useConfigStore } from '../../config/store';
import { migrateConfig } from '../../tools/config/migrateConfig';
import { Config } from '../../tools/types';
import { ConfigType } from '../../types/config';

export const LoadConfigComponent = () => {
  const { addConfig } = useConfigStore();
  const theme = useMantineTheme();
  const { t } = useTranslation('settings/general/config-changer');

  return (
    <Dropzone.FullScreen
      onDrop={async (files) => {
        const fileName = files[0].name.replaceAll('.json', '');
        const fileText = await files[0].text();

        try {
          JSON.parse(fileText) as ConfigType;
        } catch (e) {
          showNotification({
            autoClose: 5000,
            title: <Text>{t('dropzone.notifications.invalidConfig.title')}</Text>,
            color: 'red',
            icon: <X />,
            message: t('dropzone.notifications.invalidConfig.message'),
          });
          return;
        }

        let newConfig: ConfigType = JSON.parse(fileText);

        if (!newConfig.schemaVersion) {
          console.warn('a legacy configuration schema was deteced and migrated to the current schema');
          const oldConfig = JSON.parse(fileText) as Config;
          newConfig = migrateConfig(oldConfig);
        }

        await addConfig(fileName, newConfig, true);
        showNotification({
          autoClose: 5000,
          radius: 'md',
          title: (
            <Text>
              {t('dropzone.notifications.loadedSuccessfully.title', {
                configName: fileName,
              })}
            </Text>
          ),
          color: 'green',
          icon: <Check />,
          message: undefined,
        });
        setCookie('config-name', fileName, {
          maxAge: 60 * 60 * 24 * 30,
          sameSite: 'strict',
        });
      }}
      accept={['application/json']}
    >
      <Group position="center" spacing="xl" style={{ minHeight: 220, pointerEvents: 'none' }}>
        <Dropzone.Accept>
          <Stack align="center">
            <IconUpload
              size={50}
              stroke={1.5}
              color={theme.colors[theme.primaryColor][theme.colorScheme === 'dark' ? 4 : 6]}
            />
            <Title>{t('dropzone.accept.title')}</Title>
            <Text size="xl" inline>
              {t('dropzone.accept.text')}
            </Text>
          </Stack>
        </Dropzone.Accept>
        <Dropzone.Reject>
          <Stack align="center">
            <IconX
              size={50}
              stroke={1.5}
              color={theme.colors.red[theme.colorScheme === 'dark' ? 4 : 6]}
            />
            <Title>{t('dropzone.reject.title')}</Title>
            <Text size="xl" inline>
              {t('dropzone.reject.text')}
            </Text>
          </Stack>
        </Dropzone.Reject>
        <Dropzone.Idle>
          <IconPhoto size={50} stroke={1.5} />
        </Dropzone.Idle>
      </Group>
    </Dropzone.FullScreen>
  );
};
