feat: add contains operator into sql criteria converter

03-criteria_to_sql/2-transform_criteria_to_sql/src/contexts/shared/infrastructure/criteria/CriteriaToSqlConverter.ts

@@ -1,14 +1,26 @@
 import { Criteria } from "../../domain/criteria/Criteria";
+import { Filter } from "../../domain/criteria/Filter";
+import { Operator } from "../../domain/criteria/FilterOperator";
+
 
 export class CriteriaToSqlConverter {
+	private operatorFunctionMap = {
+		[Operator.EQUAL.valueOf()]: this.toEQUAL,
+		[Operator.CONTAINS.valueOf()]: this.toCONTAINS,
+	};
+
 	convert(fieldsToSelect: string[], tableName: string, criteria: Criteria): string {
 		let query = `SELECT ${fieldsToSelect.join(", ")} FROM ${tableName}`;
 
 		if (criteria.hasFilters()) {
 			query = query.concat(" WHERE ");
 
 			const whereQuery = criteria.filters.value.map((filter) => {
-				return `${filter.field.value} ${filter.operator.value} '${filter.value.value}'`;
+				const operatorFunction = this.operatorFunctionMap[filter.operator.value];
+				if (!operatorFunction) {
+						throw new Error(`No function defined for operator ${filter.operator.value}`);
+				}
+				return operatorFunction(filter);
 			});
 
 			query = query.concat(whereQuery.join(" AND "));
@@ -22,4 +34,12 @@ export class CriteriaToSqlConverter {
 
 		return `${query};`;
 	}
+
+	toEQUAL(filter: Filter): string {
+		return `${filter.field.value} = '${filter.value.value}'`;
+	}
+
+	toCONTAINS(filter: Filter): string {
+		return `${filter.field.value} LIKE '%${filter.value.value}%'`;
+	}
 }

03-criteria_to_sql/2-transform_criteria_to_sql/tests/contexts/shared/infrastructure/criteria/CriteriaToSqlConverter.test.ts

@@ -93,4 +93,14 @@ describe("CriteriaToSqlConverter should", () => {
 			"SELECT id, name, email FROM users WHERE name = 'Javier' AND email = 'javier@terra.es' ORDER BY id DESC;",
 		);
 	});
+
+	it('Generate select with one filter and "CONTAINS" operator', () => {
+		const actualQuery = converter.convert(
+			["id", "name"],
+			"users",
+			CriteriaMother.withOneFilter("name", "CONTAINS", "tuttodev"),
+		);
+
+		expect(actualQuery).toBe("SELECT id, name FROM users WHERE name LIKE '%tuttodev%';");
+	});
 });