feat: add SQL block rendering as editor

src/notebooks/deepnote/converters/sqlBlockConverter.ts

@@ -0,0 +1,37 @@
+import { NotebookCellData, NotebookCellKind } from 'vscode';
+
+import type { BlockConverter } from './blockConverter';
+import type { DeepnoteBlock } from '../deepnoteTypes';
+
+/**
+ * Converter for SQL blocks.
+ *
+ * SQL blocks are rendered as code cells with SQL language for proper syntax highlighting.
+ * The SQL source code is stored in the cell content and displayed in the code editor.
+ *
+ * During execution, the createPythonCode function from @deepnote/blocks will generate
+ * the appropriate Python code to execute the SQL query based on the block's metadata
+ * (which includes the sql_integration_id and other SQL-specific settings).
+ */
+export class SqlBlockConverter implements BlockConverter {
+    applyChangesToBlock(block: DeepnoteBlock, cell: NotebookCellData): void {
+        // Store the SQL source code from the cell editor back to the block
+        block.content = cell.value || '';
+    }
+
+    canConvert(blockType: string): boolean {
+        return blockType.toLowerCase() === 'sql';
+    }
+
+    convertToCell(block: DeepnoteBlock): NotebookCellData {
+        // Create a code cell with SQL language for syntax highlighting
+        // The SQL source code is displayed in the editor
+        const cell = new NotebookCellData(NotebookCellKind.Code, block.content || '', 'sql');
+
+        return cell;
+    }
+
+    getSupportedTypes(): string[] {
+        return ['sql'];
+    }
+}

src/notebooks/deepnote/converters/sqlBlockConverter.unit.test.ts

@@ -0,0 +1,199 @@
+import { assert } from 'chai';
+import { NotebookCellData, NotebookCellKind } from 'vscode';
+
+import type { DeepnoteBlock } from '../deepnoteTypes';
+import { SqlBlockConverter } from './sqlBlockConverter';
+import dedent from 'dedent';
+
+suite('SqlBlockConverter', () => {
+    let converter: SqlBlockConverter;
+
+    setup(() => {
+        converter = new SqlBlockConverter();
+    });
+
+    suite('canConvert', () => {
+        test('returns true for "sql" type', () => {
+            assert.strictEqual(converter.canConvert('sql'), true);
+        });
+
+        test('returns true for "SQL" type (case insensitive)', () => {
+            assert.strictEqual(converter.canConvert('SQL'), true);
+        });
+
+        test('returns false for other types', () => {
+            assert.strictEqual(converter.canConvert('code'), false);
+            assert.strictEqual(converter.canConvert('markdown'), false);
+            assert.strictEqual(converter.canConvert('text-cell-h1'), false);
+        });
+    });
+
+    suite('getSupportedTypes', () => {
+        test('returns array with "sql"', () => {
+            const types = converter.getSupportedTypes();
+
+            assert.deepStrictEqual(types, ['sql']);
+        });
+    });
+
+    suite('convertToCell', () => {
+        test('converts SQL block to code cell with sql language', () => {
+            const block: DeepnoteBlock = {
+                blockGroup: 'test-group',
+                content: 'SELECT * FROM users WHERE age > 18',
+                id: 'sql-block-123',
+                sortingKey: 'a0',
+                type: 'sql'
+            };
+
+            const cell = converter.convertToCell(block);
+
+            assert.strictEqual(cell.kind, NotebookCellKind.Code);
+            assert.strictEqual(cell.value, 'SELECT * FROM users WHERE age > 18');
+            assert.strictEqual(cell.languageId, 'sql');
+        });
+
+        test('handles empty SQL content', () => {
+            const block: DeepnoteBlock = {
+                blockGroup: 'test-group',
+                content: '',
+                id: 'sql-block-456',
+                sortingKey: 'a1',
+                type: 'sql'
+            };
+
+            const cell = converter.convertToCell(block);
+
+            assert.strictEqual(cell.kind, NotebookCellKind.Code);
+            assert.strictEqual(cell.value, '');
+            assert.strictEqual(cell.languageId, 'sql');
+        });
+
+        test('handles undefined SQL content', () => {
+            const block: DeepnoteBlock = {
+                blockGroup: 'test-group',
+                id: 'sql-block-789',
+                sortingKey: 'a2',
+                type: 'sql'
+            };
+
+            const cell = converter.convertToCell(block);
+
+            assert.strictEqual(cell.kind, NotebookCellKind.Code);
+            assert.strictEqual(cell.value, '');
+            assert.strictEqual(cell.languageId, 'sql');
+        });
+
+        test('preserves multi-line SQL queries', () => {
+            const sqlQuery = dedent`
+                SELECT
+                    u.name,
+                    u.email,
+                    COUNT(o.id) as order_count
+                FROM users u
+                LEFT JOIN orders o ON u.id = o.user_id
+                WHERE u.created_at > '2024-01-01'
+                GROUP BY u.id, u.name, u.email
+                ORDER BY order_count DESC
+                LIMIT 10
+            `;
+
+            const block: DeepnoteBlock = {
+                blockGroup: 'test-group',
+                content: sqlQuery,
+                id: 'sql-block-complex',
+                sortingKey: 'a3',
+                type: 'sql'
+            };
+
+            const cell = converter.convertToCell(block);
+
+            assert.strictEqual(cell.kind, NotebookCellKind.Code);
+            assert.strictEqual(cell.value, sqlQuery);
+            assert.strictEqual(cell.languageId, 'sql');
+        });
+
+        test('preserves SQL block with metadata', () => {
+            const block: DeepnoteBlock = {
+                blockGroup: 'test-group',
+                content: 'SELECT * FROM products',
+                id: 'sql-block-with-metadata',
+                metadata: {
+                    sql_integration_id: 'postgres-prod',
+                    table_state_spec: '{"pageSize": 50}'
+                },
+                sortingKey: 'a4',
+                type: 'sql'
+            };
+
+            const cell = converter.convertToCell(block);
+
+            assert.strictEqual(cell.kind, NotebookCellKind.Code);
+            assert.strictEqual(cell.value, 'SELECT * FROM products');
+            assert.strictEqual(cell.languageId, 'sql');
+            // Metadata is handled by the data converter, not the block converter
+        });
+    });
+
+    suite('applyChangesToBlock', () => {
+        test('updates block content from cell value', () => {
+            const block: DeepnoteBlock = {
+                blockGroup: 'test-group',
+                content: 'SELECT * FROM old_table',
+                id: 'sql-block-123',
+                sortingKey: 'a0',
+                type: 'sql'
+            };
+            const cell = new NotebookCellData(
+                NotebookCellKind.Code,
+                'SELECT * FROM new_table WHERE active = true',
+                'sql'
+            );
+
+            converter.applyChangesToBlock(block, cell);
+
+            assert.strictEqual(block.content, 'SELECT * FROM new_table WHERE active = true');
+        });
+
+        test('handles empty cell value', () => {
+            const block: DeepnoteBlock = {
+                blockGroup: 'test-group',
+                content: 'SELECT * FROM users',
+                id: 'sql-block-456',
+                sortingKey: 'a1',
+                type: 'sql'
+            };
+            const cell = new NotebookCellData(NotebookCellKind.Code, '', 'sql');
+
+            converter.applyChangesToBlock(block, cell);
+
+            assert.strictEqual(block.content, '');
+        });
+
+        test('does not modify other block properties', () => {
+            const block: DeepnoteBlock = {
+                blockGroup: 'test-group',
+                content: 'SELECT * FROM old_query',
+                id: 'sql-block-789',
+                metadata: {
+                    sql_integration_id: 'postgres-prod',
+                    custom: 'value'
+                },
+                sortingKey: 'a2',
+                type: 'sql'
+            };
+            const cell = new NotebookCellData(NotebookCellKind.Code, 'SELECT * FROM new_query', 'sql');
+
+            converter.applyChangesToBlock(block, cell);
+
+            assert.strictEqual(block.content, 'SELECT * FROM new_query');
+            assert.strictEqual(block.id, 'sql-block-789');
+            assert.strictEqual(block.type, 'sql');
+            assert.strictEqual(block.sortingKey, 'a2');
+            assert.deepStrictEqual(block.metadata, {
+                sql_integration_id: 'postgres-prod',
+                custom: 'value'
+            });
+        });
+    });
+});

src/notebooks/deepnote/deepnoteDataConverter.ts

@@ -5,8 +5,9 @@ import { generateBlockId, generateSortingKey } from './dataConversionUtils';
 import { ConverterRegistry } from './converters/converterRegistry';
 import { CodeBlockConverter } from './converters/codeBlockConverter';
 import { addPocketToCellMetadata, createBlockFromPocket } from './pocket';
-import { TextBlockConverter } from './converters/textBlockConverter';
 import { MarkdownBlockConverter } from './converters/markdownBlockConverter';
+import { SqlBlockConverter } from './converters/sqlBlockConverter';
+import { TextBlockConverter } from './converters/textBlockConverter';
 
 /**
  * Utility class for converting between Deepnote block structures and VS Code notebook cells.
@@ -17,8 +18,9 @@ export class DeepnoteDataConverter {
 
     constructor() {
         this.registry.register(new CodeBlockConverter());
-        this.registry.register(new TextBlockConverter());
         this.registry.register(new MarkdownBlockConverter());
+        this.registry.register(new SqlBlockConverter());
+        this.registry.register(new TextBlockConverter());
     }
 
     /**

src/notebooks/deepnote/deepnoteDataConverter.unit.test.ts

@@ -59,6 +59,33 @@ suite('DeepnoteDataConverter', () => {
             assert.strictEqual(cells[0].metadata?.__deepnotePocket?.type, 'markdown');
         });
 
+        test('converts SQL block to cell with sql language', () => {
+            const blocks: DeepnoteBlock[] = [
+                {
+                    blockGroup: 'test-group',
+                    id: 'block3',
+                    type: 'sql',
+                    content: 'SELECT * FROM users WHERE id = 1',
+                    sortingKey: 'a2',
+                    metadata: {
+                        sql_integration_id: 'postgres-123'
+                    }
+                }
+            ];
+
+            const cells = converter.convertBlocksToCells(blocks);
+
+            assert.strictEqual(cells.length, 1);
+            assert.strictEqual(cells[0].kind, NotebookCellKind.Code);
+            assert.strictEqual(cells[0].value, 'SELECT * FROM users WHERE id = 1');
+            assert.strictEqual(cells[0].languageId, 'sql');
+            // id should be at top level, not in pocket
+            assert.strictEqual(cells[0].metadata?.id, 'block3');
+            assert.strictEqual(cells[0].metadata?.__deepnotePocket?.type, 'sql');
+            assert.strictEqual(cells[0].metadata?.__deepnotePocket?.sortingKey, 'a2');
+            assert.strictEqual(cells[0].metadata?.sql_integration_id, 'postgres-123');
+        });
+
         test('handles execution count', () => {
             const blocks: DeepnoteBlock[] = [
                 {