import {
  ActionIcon,
  ColorInput,
  Group,
  NumberInput,
  Paper,
  SegmentedControl,
  Select,
  Stack,
  Text,
  TextInput,
  Tooltip,
} from '@mantine/core';
import { IconTrash } from '@tabler/icons-react';
import { useTranslation } from 'react-i18next';
import type { TemplateFieldPlacement, TemplateVariable } from '@ema-platform/api';

interface Props {
  block: TemplateFieldPlacement | null;
  variables: TemplateVariable[];
  onChange: (block: TemplateFieldPlacement) => void;
  onDelete: (id: string) => void;
  disabled: boolean;
}

/** Everything about the selected block that is not its position on the page. */
export function BlockPropertiesPanel({
  block,
  variables,
  onChange,
  onDelete,
  disabled,
}: Props) {
  const { t } = useTranslation();

  if (!block) {
    return (
      <Paper withBorder p="md" radius="md">
        <Text size="sm" c="dimmed">
          {t('designer.noBlockSelected', 'Select a block on the page to edit it.')}
        </Text>
      </Paper>
    );
  }

  const isLiteral = block.variable === null;

  return (
    <Paper withBorder p="md" radius="md">
      <Stack gap="sm">
        <Group justify="space-between" align="center">
          <Text fw={600} size="sm">
            {t('designer.blockProperties', 'Selected block')}
          </Text>
          <Tooltip label={t('designer.deleteBlock', 'Remove block')}>
            <ActionIcon
              variant="subtle"
              color="red"
              disabled={disabled}
              onClick={() => onDelete(block.id)}
            >
              <IconTrash size={16} />
            </ActionIcon>
          </Tooltip>
        </Group>

        <SegmentedControl
          fullWidth
          size="xs"
          value={isLiteral ? 'text' : 'variable'}
          disabled={disabled}
          onChange={(value) =>
            onChange(
              value === 'text'
                ? { ...block, variable: null, text: block.text ?? '' }
                : { ...block, variable: variables[0]?.key ?? 'companyName' },
            )
          }
          data={[
            { value: 'variable', label: t('designer.blockVariable', 'Variable') },
            { value: 'text', label: t('designer.blockText', 'Fixed text') },
          ]}
        />

        {isLiteral ? (
          <TextInput
            label={t('designer.blockTextLabel', 'Text')}
            value={block.text ?? ''}
            onChange={(e) => onChange({ ...block, text: e.currentTarget.value })}
            disabled={disabled}
          />
        ) : (
          <Select
            label={t('designer.blockVariableLabel', 'Variable')}
            data={variables.map((variable) => ({
              value: variable.key,
              label: variable.label,
            }))}
            value={block.variable}
            onChange={(value) => onChange({ ...block, variable: value })}
            searchable
            disabled={disabled}
          />
        )}

        <Group gap="xs" grow>
          <NumberInput
            label={t('designer.blockFontSize', 'Font size')}
            value={block.fontSize ?? 14}
            onChange={(value) => onChange({ ...block, fontSize: Number(value) || 14 })}
            min={4}
            max={200}
            disabled={disabled}
          />
          <NumberInput
            label={t('designer.blockWidth', 'Width (%)')}
            value={block.widthPct}
            onChange={(value) =>
              onChange({ ...block, widthPct: Math.min(100, Math.max(1, Number(value) || 1)) })
            }
            min={1}
            max={100}
            disabled={disabled}
          />
        </Group>

        <Group gap="xs" grow>
          <NumberInput
            label={t('designer.blockX', 'X (%)')}
            value={block.xPct}
            onChange={(value) =>
              onChange({ ...block, xPct: Math.min(100, Math.max(0, Number(value) || 0)) })
            }
            min={0}
            max={100}
            decimalScale={2}
            disabled={disabled}
          />
          <NumberInput
            label={t('designer.blockY', 'Y (%)')}
            value={block.yPct}
            onChange={(value) =>
              onChange({ ...block, yPct: Math.min(100, Math.max(0, Number(value) || 0)) })
            }
            min={0}
            max={100}
            decimalScale={2}
            disabled={disabled}
          />
        </Group>

        <SegmentedControl
          fullWidth
          size="xs"
          value={block.align ?? 'left'}
          disabled={disabled}
          onChange={(value) =>
            onChange({ ...block, align: value as TemplateFieldPlacement['align'] })
          }
          data={[
            { value: 'left', label: t('designer.alignLeft', 'Left') },
            { value: 'center', label: t('designer.alignCenter', 'Centre') },
            { value: 'right', label: t('designer.alignRight', 'Right') },
          ]}
        />

        <SegmentedControl
          fullWidth
          size="xs"
          value={block.fontWeight ?? 'normal'}
          disabled={disabled}
          onChange={(value) =>
            onChange({ ...block, fontWeight: value as TemplateFieldPlacement['fontWeight'] })
          }
          data={[
            { value: 'normal', label: t('designer.weightNormal', 'Normal') },
            { value: 'bold', label: t('designer.weightBold', 'Bold') },
          ]}
        />

        <ColorInput
          label={t('designer.blockColor', 'Colour')}
          value={block.color ?? '#111111'}
          onChange={(value) => onChange({ ...block, color: value })}
          disabled={disabled}
          format="hex"
        />
      </Stack>
    </Paper>
  );
}