Loki: Support binary operations and nested queries in new builder (#47012)

* Binary ops support

* Add support for nested expressions in loki

* Nested queries working

* Fixing tests

* Share more code between loki and prometheus query modellers

public/app/plugins/datasource/loki/querybuilder/LokiQueryModeller.test.ts

@@ -112,6 +112,33 @@ describe('LokiQueryModeller', () => {
     ).toBe('{app="grafana"} | unwrap count');
   });
 
+  it('Can render simply binary operation with scalar', () => {
+    expect(
+      modeller.renderQuery({
+        labels: [{ label: 'app', op: '=', value: 'grafana' }],
+        operations: [{ id: LokiOperationId.MultiplyBy, params: [1000] }],
+      })
+    ).toBe('{app="grafana"} * 1000');
+  });
+
+  it('Can render query with simple binary query', () => {
+    expect(
+      modeller.renderQuery({
+        labels: [{ label: 'app', op: '=', value: 'grafana' }],
+        operations: [{ id: LokiOperationId.Rate, params: ['5m'] }],
+        binaryQueries: [
+          {
+            operator: '/',
+            query: {
+              labels: [{ label: 'job', op: '=', value: 'backup' }],
+              operations: [{ id: LokiOperationId.CountOverTime, params: ['5m'] }],
+            },
+          },
+        ],
+      })
+    ).toBe('rate({app="grafana"} [5m]) / count_over_time({job="backup"} [5m])');
+  });
+
   describe('On add operation handlers', () => {
     it('When adding function without range vector param should automatically add rate', () => {
       const query = {

public/app/plugins/datasource/loki/querybuilder/LokiQueryModeller.ts

@@ -1,9 +1,9 @@
 import { LokiAndPromQueryModellerBase } from '../../prometheus/querybuilder/shared/LokiAndPromQueryModellerBase';
 import { QueryBuilderLabelFilter } from '../../prometheus/querybuilder/shared/types';
 import { getOperationDefintions } from './operations';
-import { LokiOperationId, LokiQueryPattern, LokiVisualQuery, LokiVisualQueryOperationCategory } from './types';
+import { LokiOperationId, LokiQueryPattern, LokiVisualQueryOperationCategory } from './types';
 
-export class LokiQueryModeller extends LokiAndPromQueryModellerBase<LokiVisualQuery> {
+export class LokiQueryModeller extends LokiAndPromQueryModellerBase {
   constructor() {
     super(getOperationDefintions);
 
@@ -11,7 +11,7 @@ export class LokiQueryModeller extends LokiAndPromQueryModellerBase<LokiVisualQu
       LokiVisualQueryOperationCategory.Aggregations,
       LokiVisualQueryOperationCategory.RangeFunctions,
       LokiVisualQueryOperationCategory.Formats,
-      //LokiVisualQueryOperationCategory.Functions,
+      LokiVisualQueryOperationCategory.BinaryOps,
       LokiVisualQueryOperationCategory.LabelFilters,
       LokiVisualQueryOperationCategory.LineFilters,
     ]);
@@ -25,13 +25,6 @@ export class LokiQueryModeller extends LokiAndPromQueryModellerBase<LokiVisualQu
     return super.renderLabels(labels);
   }
 
-  renderQuery(query: LokiVisualQuery) {
-    let queryString = `${this.renderLabels(query.labels)}`;
-    queryString = this.renderOperations(queryString, query.operations);
-    queryString = this.renderBinaryQueries(queryString, query.binaryQueries);
-    return queryString;
-  }
-
   getQueryPatterns(): LokiQueryPattern[] {
     return [
       {

public/app/plugins/datasource/loki/querybuilder/binaryScalarOperations.ts

@@ -0,0 +1,115 @@
+import { defaultAddOperationHandler } from '../../prometheus/querybuilder/shared/operationUtils';
+import {
+  QueryBuilderOperation,
+  QueryBuilderOperationDef,
+  QueryBuilderOperationParamDef,
+} from '../../prometheus/querybuilder/shared/types';
+import { LokiOperationId, LokiVisualQueryOperationCategory } from './types';
+
+export const binaryScalarDefs = [
+  {
+    id: LokiOperationId.Addition,
+    name: 'Add scalar',
+    sign: '+',
+  },
+  {
+    id: LokiOperationId.Subtraction,
+    name: 'Subtract scalar',
+    sign: '-',
+  },
+  {
+    id: LokiOperationId.MultiplyBy,
+    name: 'Multiply by scalar',
+    sign: '*',
+  },
+  {
+    id: LokiOperationId.DivideBy,
+    name: 'Divide by scalar',
+    sign: '/',
+  },
+  {
+    id: LokiOperationId.Modulo,
+    name: 'Modulo by scalar',
+    sign: '%',
+  },
+  {
+    id: LokiOperationId.Exponent,
+    name: 'Exponent',
+    sign: '^',
+  },
+  {
+    id: LokiOperationId.EqualTo,
+    name: 'Equal to',
+    sign: '==',
+    comparison: true,
+  },
+  {
+    id: LokiOperationId.NotEqualTo,
+    name: 'Not equal to',
+    sign: '!=',
+    comparison: true,
+  },
+  {
+    id: LokiOperationId.GreaterThan,
+    name: 'Greater than',
+    sign: '>',
+    comparison: true,
+  },
+  {
+    id: LokiOperationId.LessThan,
+    name: 'Less than',
+    sign: '<',
+    comparison: true,
+  },
+  {
+    id: LokiOperationId.GreaterOrEqual,
+    name: 'Greater or equal to',
+    sign: '>=',
+    comparison: true,
+  },
+  {
+    id: LokiOperationId.LessOrEqual,
+    name: 'Less or equal to',
+    sign: '<=',
+    comparison: true,
+  },
+];
+
+// Not sure about this one. It could also be a more generic 'Simple math operation' where user specifies
+// both the operator and the operand in a single input
+export const binaryScalarOperations: QueryBuilderOperationDef[] = binaryScalarDefs.map((opDef) => {
+  const params: QueryBuilderOperationParamDef[] = [{ name: 'Value', type: 'number' }];
+  const defaultParams: any[] = [2];
+  if (opDef.comparison) {
+    params.unshift({
+      name: 'Bool',
+      type: 'boolean',
+      description: 'If checked comparison will return 0 or 1 for the value rather than filtering.',
+    });
+    defaultParams.unshift(false);
+  }
+
+  return {
+    id: opDef.id,
+    name: opDef.name,
+    params,
+    defaultParams,
+    alternativesKey: 'binary scalar operations',
+    category: LokiVisualQueryOperationCategory.BinaryOps,
+    renderer: getSimpleBinaryRenderer(opDef.sign),
+    addOperationHandler: defaultAddOperationHandler,
+  };
+});
+
+function getSimpleBinaryRenderer(operator: string) {
+  return function binaryRenderer(model: QueryBuilderOperation, def: QueryBuilderOperationDef, innerExpr: string) {
+    let param = model.params[0];
+    let bool = '';
+    if (model.params.length === 2) {
+      param = model.params[1];
+      bool = model.params[0] ? ' bool' : '';
+    }
+
+    return `${innerExpr} ${operator}${bool} ${param}`;
+  };
+}

public/app/plugins/datasource/loki/querybuilder/components/LokiQueryBuilder.tsx

@@ -8,6 +8,8 @@ import { lokiQueryModeller } from '../LokiQueryModeller';
 import { DataSourceApi, SelectableValue } from '@grafana/data';
 import { EditorRow } from '@grafana/experimental';
 import { QueryPreview } from './QueryPreview';
+import { OperationsEditorRow } from 'app/plugins/datasource/prometheus/querybuilder/shared/OperationsEditorRow';
+import { NestedQueryList } from './NestedQueryList';
 
 export interface Props {
   query: LokiVisualQuery;
@@ -70,7 +72,7 @@ export const LokiQueryBuilder = React.memo<Props>(({ datasource, query, nested,
           onChange={onChangeLabels}
         />
       </EditorRow>
-      <EditorRow>
+      <OperationsEditorRow>
         <OperationList
           queryModeller={lokiQueryModeller}
           query={query}
@@ -78,7 +80,10 @@ export const LokiQueryBuilder = React.memo<Props>(({ datasource, query, nested,
           onRunQuery={onRunQuery}
           datasource={datasource as DataSourceApi}
         />
-      </EditorRow>
+      </OperationsEditorRow>
+      {query.binaryQueries && query.binaryQueries.length > 0 && (
+        <NestedQueryList query={query} datasource={datasource} onChange={onChange} onRunQuery={onRunQuery} />
+      )}
       {!nested && (
         <EditorRow>
           <QueryPreview query={query} />

public/app/plugins/datasource/loki/querybuilder/components/LokiQueryEditorSelector.test.tsx

@@ -3,7 +3,7 @@ import { render, screen } from '@testing-library/react';
 import userEvent from '@testing-library/user-event';
 import { LokiDatasource } from '../../datasource';
 import { cloneDeep, defaultsDeep } from 'lodash';
-import { LokiQuery } from '../../types';
+import { LokiQuery, LokiQueryType } from '../../types';
 import { LokiQueryEditorSelector } from './LokiQueryEditorSelector';
 import { QueryEditorMode } from 'app/plugins/datasource/prometheus/querybuilder/shared/types';
 
@@ -77,6 +77,7 @@ describe('LokiQueryEditorSelector', () => {
     expect(onChange).toBeCalledWith({
       refId: 'A',
       expr: defaultQuery.expr,
+      queryType: LokiQueryType.Range,
       editorMode: QueryEditorMode.Builder,
     });
   });
@@ -111,6 +112,7 @@ describe('LokiQueryEditorSelector', () => {
     expect(onChange).toBeCalledWith({
       refId: 'A',
       expr: defaultQuery.expr,
+      queryType: LokiQueryType.Range,
       editorMode: QueryEditorMode.Code,
     });
   });
@@ -121,6 +123,7 @@ describe('LokiQueryEditorSelector', () => {
     expect(onChange).toBeCalledWith({
       refId: 'A',
       expr: defaultQuery.expr,
+      queryType: LokiQueryType.Range,
       editorMode: QueryEditorMode.Explain,
     });
   });

public/app/plugins/datasource/loki/querybuilder/components/LokiQueryEditorSelector.tsx

@@ -7,6 +7,7 @@ import { QueryEditorMode } from 'app/plugins/datasource/prometheus/querybuilder/
 import React, { useCallback, useState } from 'react';
 import { LokiQueryEditorProps } from '../../components/types';
 import { lokiQueryModeller } from '../LokiQueryModeller';
+import { getQueryWithDefaults } from '../state';
 import { getDefaultEmptyQuery, LokiVisualQuery } from '../types';
 import { LokiQueryBuilder } from './LokiQueryBuilder';
 import { LokiQueryBuilderExplained } from './LokiQueryBuilderExplaind';
@@ -14,8 +15,9 @@ import { LokiQueryBuilderOptions } from './LokiQueryBuilderOptions';
 import { LokiQueryCodeEditor } from './LokiQueryCodeEditor';
 
 export const LokiQueryEditorSelector = React.memo<LokiQueryEditorProps>((props) => {
-  const { query, onChange, onRunQuery, data } = props;
+  const { onChange, onRunQuery, data } = props;
   const styles = useStyles2(getStyles);
+  const query = getQueryWithDefaults(props.query);
   const [visualQuery, setVisualQuery] = useState<LokiVisualQuery>(query.visualQuery ?? getDefaultEmptyQuery());
 
   const onEditorModeChange = useCallback(

public/app/plugins/datasource/loki/querybuilder/components/NestedQuery.tsx

@@ -0,0 +1,125 @@
+import { css } from '@emotion/css';
+import { GrafanaTheme2, toOption } from '@grafana/data';
+import { EditorRows, FlexItem } from '@grafana/experimental';
+import { IconButton, Select, useStyles2 } from '@grafana/ui';
+import React from 'react';
+import { binaryScalarDefs } from '../binaryScalarOperations';
+import { LokiVisualQueryBinary } from '../types';
+import { LokiDatasource } from '../../datasource';
+import { LokiQueryBuilder } from './LokiQueryBuilder';
+import { AutoSizeInput } from 'app/plugins/datasource/prometheus/querybuilder/shared/AutoSizeInput';
+
+export interface Props {
+  nestedQuery: LokiVisualQueryBinary;
+  datasource: LokiDatasource;
+  index: number;
+  onChange: (index: number, update: LokiVisualQueryBinary) => void;
+  onRemove: (index: number) => void;
+  onRunQuery: () => void;
+}
+
+export const NestedQuery = React.memo<Props>(({ nestedQuery, index, datasource, onChange, onRemove, onRunQuery }) => {
+  const styles = useStyles2(getStyles);
+
+  return (
+    <div className={styles.card}>
+      <div className={styles.header}>
+        <div className={styles.name}>Operator</div>
+        <Select
+          width="auto"
+          options={operators}
+          value={toOption(nestedQuery.operator)}
+          onChange={(value) => {
+            onChange(index, {
+              ...nestedQuery,
+              operator: value.value!,
+            });
+          }}
+        />
+        <div className={styles.name}>Vector matches</div>
+        <div className={styles.vectorMatchWrapper}>
+          <Select<LokiVisualQueryBinary['vectorMatchesType']>
+            width="auto"
+            value={nestedQuery.vectorMatchesType || 'on'}
+            allowCustomValue
+            options={[
+              { value: 'on', label: 'on' },
+              { value: 'ignoring', label: 'ignoring' },
+            ]}
+            onChange={(val) => {
+              onChange(index, {
+                ...nestedQuery,
+                vectorMatchesType: val.value,
+              });
+            }}
+          />
+          <AutoSizeInput
+            className={styles.vectorMatchInput}
+            minWidth={20}
+            defaultValue={nestedQuery.vectorMatches}
+            onCommitChange={(evt) => {
+              onChange(index, {
+                ...nestedQuery,
+                vectorMatches: evt.currentTarget.value,
+                vectorMatchesType: nestedQuery.vectorMatchesType || 'on',
+              });
+            }}
+          />
+        </div>
+        <FlexItem grow={1} />
+        <IconButton name="times" size="sm" onClick={() => onRemove(index)} />
+      </div>
+      <div className={styles.body}>
+        <EditorRows>
+          <LokiQueryBuilder
+            query={nestedQuery.query}
+            datasource={datasource}
+            nested={true}
+            onRunQuery={onRunQuery}
+            onChange={(update) => {
+              onChange(index, { ...nestedQuery, query: update });
+            }}
+          />
+        </EditorRows>
+      </div>
+    </div>
+  );
+});
+
+const operators = binaryScalarDefs.map((def) => ({ label: def.sign, value: def.sign }));
+
+NestedQuery.displayName = 'NestedQuery';
+
+const getStyles = (theme: GrafanaTheme2) => {
+  return {
+    card: css({
+      label: 'card',
+      display: 'flex',
+      flexDirection: 'column',
+      gap: theme.spacing(0.5),
+    }),
+    header: css({
+      label: 'header',
+      padding: theme.spacing(0.5, 0.5, 0.5, 1),
+      gap: theme.spacing(1),
+      display: 'flex',
+      alignItems: 'center',
+    }),
+    name: css({
+      label: 'name',
+      whiteSpace: 'nowrap',
+    }),
+    body: css({
+      label: 'body',
+      paddingLeft: theme.spacing(2),
+    }),
+    vectorMatchInput: css({
+      label: 'vectorMatchInput',
+      marginLeft: -1,
+    }),
+    vectorMatchWrapper: css({
+      label: 'vectorMatchWrapper',
+      display: 'flex',
+    }),
+  };
+};

public/app/plugins/datasource/loki/querybuilder/components/NestedQueryList.tsx

@@ -0,0 +1,43 @@
+import { Stack } from '@grafana/experimental';
+import React from 'react';
+import { LokiDatasource } from '../../datasource';
+import { LokiVisualQuery, LokiVisualQueryBinary } from '../types';
+import { NestedQuery } from './NestedQuery';
+
+export interface Props {
+  query: LokiVisualQuery;
+  datasource: LokiDatasource;
+  onChange: (query: LokiVisualQuery) => void;
+  onRunQuery: () => void;
+}
+
+export function NestedQueryList({ query, datasource, onChange, onRunQuery }: Props) {
+  const nestedQueries = query.binaryQueries ?? [];
+
+  const onNestedQueryUpdate = (index: number, update: LokiVisualQueryBinary) => {
+    const updatedList = [...nestedQueries];
+    updatedList.splice(index, 1, update);
+    onChange({ ...query, binaryQueries: updatedList });
+  };
+
+  const onRemove = (index: number) => {
+    const updatedList = [...nestedQueries.slice(0, index), ...nestedQueries.slice(index + 1)];
+    onChange({ ...query, binaryQueries: updatedList });
+  };
+
+  return (
+    <Stack direction="column" gap={1}>
+      {nestedQueries.map((nestedQuery, index) => (
+        <NestedQuery
+          key={index.toString()}
+          nestedQuery={nestedQuery}
+          index={index}
+          onChange={onNestedQueryUpdate}
+          datasource={datasource}
+          onRemove={onRemove}
+          onRunQuery={onRunQuery}
+        />
+      ))}
+    </Stack>
+  );
+}

public/app/plugins/datasource/loki/querybuilder/operations.ts

@@ -7,6 +7,7 @@ import {
   VisualQueryModeller,
 } from '../../prometheus/querybuilder/shared/types';
 import { FUNCTIONS } from '../syntax';
+import { binaryScalarOperations } from './binaryScalarOperations';
 import { LokiOperationId, LokiOperationOrder, LokiVisualQuery, LokiVisualQueryOperationCategory } from './types';
 
 export function getOperationDefintions(): QueryBuilderOperationDef[] {
@@ -180,6 +181,16 @@ export function getOperationDefintions(): QueryBuilderOperationDef[] {
         return `Use the extracted label \`${label}\` as sample values instead of log lines for the subsequent range aggregation.`;
       },
     },
+    ...binaryScalarOperations,
+    {
+      id: LokiOperationId.NestedQuery,
+      name: 'Binary operation with query',
+      params: [],
+      defaultParams: [],
+      category: LokiVisualQueryOperationCategory.BinaryOps,
+      renderer: (model, def, innerExpr) => innerExpr,
+      addOperationHandler: addNestedQueryHandler,
+    },
   ];
 
   return list;
@@ -328,3 +339,16 @@ export function addLokiOperation(
     operations,
   };
 }
+
+function addNestedQueryHandler(def: QueryBuilderOperationDef, query: LokiVisualQuery): LokiVisualQuery {
+  return {
+    ...query,
+    binaryQueries: [
+      ...(query.binaryQueries ?? []),
+      {
+        operator: '/',
+        query,
+      },
+    ],
+  };
+}

public/app/plugins/datasource/loki/querybuilder/state.ts

@@ -0,0 +1,54 @@
+import store from 'app/core/store';
+import { QueryEditorMode } from '../../prometheus/querybuilder/shared/types';
+import { LokiQuery, LokiQueryType } from '../types';
+
+const queryEditorModeDefaultLocalStorageKey = 'LokiQueryEditorModeDefault';
+
+export function changeEditorMode(query: LokiQuery, editorMode: QueryEditorMode, onChange: (query: LokiQuery) => void) {
+  // If empty query store new mode as default
+  if (query.expr === '') {
+    store.set(queryEditorModeDefaultLocalStorageKey, editorMode);
+  }
+
+  onChange({ ...query, editorMode });
+}
+
+export function getDefaultEditorMode(expr: string) {
+  // If we already have an expression default to code view
+  if (expr != null && expr !== '') {
+    return QueryEditorMode.Code;
+  }
+
+  const value = store.get(queryEditorModeDefaultLocalStorageKey) as QueryEditorMode;
+  switch (value) {
+    case QueryEditorMode.Builder:
+    case QueryEditorMode.Code:
+    case QueryEditorMode.Explain:
+      return value;
+    default:
+      return QueryEditorMode.Builder;
+  }
+}
+
+/**
+ * Returns query with defaults, and boolean true/false depending on change was required
+ */
+export function getQueryWithDefaults(query: LokiQuery): LokiQuery {
+  // If no expr (ie new query) then default to builder
+  let result = query;
+
+  if (!query.editorMode) {
+    result = { ...query, editorMode: getDefaultEditorMode(query.expr) };
+  }
+
+  if (query.expr == null) {
+    result = { ...result, expr: '' };
+  }
+
+  if (query.queryType == null) {
+    // Default to range query
+    result = { ...result, queryType: LokiQueryType.Range };
+  }
+
+  return result;
+}

public/app/plugins/datasource/loki/querybuilder/types.ts

@@ -1,3 +1,4 @@
+import { VisualQueryBinary } from '../../prometheus/querybuilder/shared/LokiAndPromQueryModellerBase';
 import { QueryBuilderLabelFilter, QueryBuilderOperation } from '../../prometheus/querybuilder/shared/types';
 
 /**
@@ -9,11 +10,8 @@ export interface LokiVisualQuery {
   binaryQueries?: LokiVisualQueryBinary[];
 }
 
-export interface LokiVisualQueryBinary {
-  operator: string;
-  vectorMatches?: string;
-  query: LokiVisualQuery;
-}
+export type LokiVisualQueryBinary = VisualQueryBinary<LokiVisualQuery>;
+
 export interface LokiQueryPattern {
   name: string;
   operations: QueryBuilderOperation[];
@@ -26,6 +24,7 @@ export enum LokiVisualQueryOperationCategory {
   Formats = 'Formats',
   LineFilters = 'Line filters',
   LabelFilters = 'Label filters',
+  BinaryOps = 'Binary operations',
 }
 
 export enum LokiOperationId {
@@ -50,6 +49,20 @@ export enum LokiOperationId {
   LabelFilter = '__label_filter',
   LabelFilterNoErrors = '__label_filter_no_errors',
   Unwrap = 'unwrap',
+  // Binary ops
+  Addition = '__addition',
+  Subtraction = '__subtraction',
+  MultiplyBy = '__multiply_by',
+  DivideBy = '__divide_by',
+  Modulo = '__modulo',
+  Exponent = '__exponent',
+  NestedQuery = '__nested_query',
+  EqualTo = '__equal_to',
+  NotEqualTo = '__not_equal_to',
+  GreaterThan = '__greater_than',
+  LessThan = '__less_than',
+  GreaterOrEqual = '__greater_or_equal',
+  LessOrEqual = '__less_or_equal',
 }
 
 export enum LokiOperationOrder {

public/app/plugins/datasource/prometheus/querybuilder/PromQueryModeller.ts

@@ -2,9 +2,9 @@ import { FUNCTIONS } from '../promql';
 import { getAggregationOperations } from './aggregations';
 import { getOperationDefinitions } from './operations';
 import { LokiAndPromQueryModellerBase } from './shared/LokiAndPromQueryModellerBase';
-import { PromQueryPattern, PromVisualQuery, PromVisualQueryOperationCategory } from './types';
+import { PromQueryPattern, PromVisualQueryOperationCategory } from './types';
 
-export class PromQueryModeller extends LokiAndPromQueryModellerBase<PromVisualQuery> {
+export class PromQueryModeller extends LokiAndPromQueryModellerBase {
   constructor() {
     super(() => {
       const allOperations = [...getOperationDefinitions(), ...getAggregationOperations()];
@@ -27,32 +27,6 @@ export class PromQueryModeller extends LokiAndPromQueryModellerBase<PromVisualQu
     ]);
   }
 
-  renderQuery(query: PromVisualQuery, nested?: boolean) {
-    let queryString = `${query.metric}${this.renderLabels(query.labels)}`;
-    queryString = this.renderOperations(queryString, query.operations);
-
-    if (!nested && this.hasBinaryOp(query) && Boolean(query.binaryQueries?.length)) {
-      queryString = `(${queryString})`;
-    }
-
-    queryString = this.renderBinaryQueries(queryString, query.binaryQueries);
-
-    if (nested && (this.hasBinaryOp(query) || Boolean(query.binaryQueries?.length))) {
-      queryString = `(${queryString})`;
-    }
-
-    return queryString;
-  }
-
-  hasBinaryOp(query: PromVisualQuery): boolean {
-    return (
-      query.operations.find((op) => {
-        const def = this.getOperationDef(op.id);
-        return def?.category === PromVisualQueryOperationCategory.BinaryOps;
-      }) !== undefined
-    );
-  }
-
   getQueryPatterns(): PromQueryPattern[] {
     return [
       {

public/app/plugins/datasource/prometheus/querybuilder/shared/LokiAndPromQueryModellerBase.ts

@@ -1,11 +1,6 @@
 import { Registry } from '@grafana/data';
-import {
-  QueryBuilderLabelFilter,
-  QueryBuilderOperation,
-  QueryBuilderOperationDef,
-  QueryWithOperations,
-  VisualQueryModeller,
-} from './types';
+import { PromVisualQueryOperationCategory } from '../types';
+import { QueryBuilderLabelFilter, QueryBuilderOperation, QueryBuilderOperationDef, VisualQueryModeller } from './types';
 
 export interface VisualQueryBinary<T> {
   operator: string;
@@ -14,7 +9,14 @@ export interface VisualQueryBinary<T> {
   query: T;
 }
 
-export abstract class LokiAndPromQueryModellerBase<T extends QueryWithOperations> implements VisualQueryModeller {
+export interface PromLokiVisualQuery {
+  metric?: string;
+  labels: QueryBuilderLabelFilter[];
+  operations: QueryBuilderOperation[];
+  binaryQueries?: Array<VisualQueryBinary<PromLokiVisualQuery>>;
+}
+
+export abstract class LokiAndPromQueryModellerBase implements VisualQueryModeller {
   protected operationsRegisty: Registry<QueryBuilderOperationDef>;
   private categories: string[] = [];
 
@@ -54,7 +56,7 @@ export abstract class LokiAndPromQueryModellerBase<T extends QueryWithOperations
     return queryString;
   }
 
-  renderBinaryQueries(queryString: string, binaryQueries?: Array<VisualQueryBinary<T>>) {
+  renderBinaryQueries(queryString: string, binaryQueries?: Array<VisualQueryBinary<PromLokiVisualQuery>>) {
     if (binaryQueries) {
       for (const binQuery of binaryQueries) {
         queryString = `${this.renderBinaryQuery(queryString, binQuery)}`;
@@ -63,7 +65,7 @@ export abstract class LokiAndPromQueryModellerBase<T extends QueryWithOperations
     return queryString;
   }
 
-  private renderBinaryQuery(leftOperand: string, binaryQuery: VisualQueryBinary<T>) {
+  private renderBinaryQuery(leftOperand: string, binaryQuery: VisualQueryBinary<PromLokiVisualQuery>) {
     let result = leftOperand + ` ${binaryQuery.operator} `;
 
     if (binaryQuery.vectorMatches) {
@@ -90,5 +92,29 @@ export abstract class LokiAndPromQueryModellerBase<T extends QueryWithOperations
     return expr + `}`;
   }
 
-  abstract renderQuery(query: T, nested?: boolean): string;
+  renderQuery(query: PromLokiVisualQuery, nested?: boolean) {
+    let queryString = `${query.metric ?? ''}${this.renderLabels(query.labels)}`;
+    queryString = this.renderOperations(queryString, query.operations);
+
+    if (!nested && this.hasBinaryOp(query) && Boolean(query.binaryQueries?.length)) {
+      queryString = `(${queryString})`;
+    }
+
+    queryString = this.renderBinaryQueries(queryString, query.binaryQueries);
+
+    if (nested && (this.hasBinaryOp(query) || Boolean(query.binaryQueries?.length))) {
+      queryString = `(${queryString})`;
+    }
+
+    return queryString;
+  }
+
+  hasBinaryOp(query: PromLokiVisualQuery): boolean {
+    return (
+      query.operations.find((op) => {
+        const def = this.getOperationDef(op.id);
+        return def?.category === PromVisualQueryOperationCategory.BinaryOps;
+      }) !== undefined
+    );
+  }
 }