From 48644a6c98aed2e9a7cae8466c7c099504177f5c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marcos=20Gim=C3=A9nez=20D=C3=ADaz?=
 <98734290+marcosgdz03@users.noreply.github.com>
Date: Sun, 3 May 2026 18:13:18 +0200
Subject: [PATCH] feat: Sistema de plantillas para Java y JavaSpring
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Content-Type: text/plain; charset=UTF-8
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Introduce el sistema de plantillas para generar proyectos Java con Spring Boot y otras tecnologías Java.

## ✅ Mejoras
- 🔥 Sistema de selección de frameworks Java con UI
- 🏛️ Plantillas para JavaSpring (REST, Clean Architecture, Microservices)
- ⚙️ Plantillas para Node.js (NestJS, Express)
- 📁 Estructura completa de proyectos con archivos JSON configurables

## 📝 Detalle
- Selector de frameworks basado en QuickPick de VS Code
- Generación automática de estructura de carpetas y archivos
- Soporte para múltiples patrones de diseño

Closes #7
---
 package.json                          |   4 +-
 src/generator/java/springGenerator.ts | 155 +++++++++++++++++++++++---
 src/snippets/generatorSnippets.ts     |  41 ++++---
 src/templates/java/clean.json         |  16 +++
 src/templates/java/javaTemplates.ts   |  80 +++++++++++++
 src/templates/java/microservices.json |  29 +++++
 src/templates/java/rest.json          |  14 +++
 src/templates/javascript/nestjs.json  |   5 +
 src/templates/javascript/simple.json  |   5 +
 9 files changed, 316 insertions(+), 33 deletions(-)
 create mode 100644 src/templates/java/clean.json
 create mode 100644 src/templates/java/javaTemplates.ts
 create mode 100644 src/templates/java/microservices.json
 create mode 100644 src/templates/java/rest.json
 create mode 100644 src/templates/javascript/nestjs.json
 create mode 100644 src/templates/javascript/simple.json

diff --git a/package.json b/package.json
index 0a500ac..8da3de2 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "sql-helper",
   "displayName": "SQL Helper",
   "description": "Advanced extension with SQL, Java JDBC, Python and JavaScript/TypeScript snippets for databases",
-  "version": "0.5.2",
+  "version": "0.5.3",
   "publisher": "marcosgdz03",
   "engines": {
     "vscode": "^1.106.0"
@@ -93,7 +93,7 @@
     "compile": "tsc -p ./",
     "watch": "tsc -watch -p ./",
     "pretest": "npm run compile && npm run lint",
-    "lint": "eslint 'src/**/*.{ts,js}'",
+    "lint": "eslint src/**/*.ts",
     "test": "node ./out/test/runTest.js"
   },
   "devDependencies": {
diff --git a/src/generator/java/springGenerator.ts b/src/generator/java/springGenerator.ts
index 066930f..e5d043e 100644
--- a/src/generator/java/springGenerator.ts
+++ b/src/generator/java/springGenerator.ts
@@ -1,8 +1,52 @@
+import * as vscode from "vscode";
 import * as fs from "fs";
 import * as path from "path";
 
 type Database = "PostgreSQL" | "MySQL" | "SQLite";
 
+interface Template {
+    name: string;
+    description: string;
+    config: {
+        package: string;
+        architecture: string;
+    };
+}
+
+export async function chooseSpringTemplate(): Promise<Template | undefined> {
+    const templates: vscode.QuickPickItem[] = [
+        { 
+            label: "📄 REST API Template", 
+            description: "Simple REST controllers"
+        },
+        { 
+            label: "🏛️ Clean Architecture", 
+            description: "Ports & Adapters pattern"
+        },
+        { 
+            label: "🔗 Microservices", 
+            description: "Spring Cloud services"
+        },
+    ];
+    
+    const selected = await vscode.window.showQuickPick(templates, {
+        placeHolder: "Choose Spring Boot template"
+    });
+    
+    if (!selected) {
+        return;
+    }
+    
+    return {
+        name: selected.label,
+        description: selected.description || "",
+        config: {
+            package: "com.example.app",
+            architecture: selected.label.toLowerCase().replace(/\s+/g, "-"),
+        } as any
+    };
+}
+
 export async function generateSpringProject(
     projectPath: string,
     version: string,
@@ -16,15 +60,28 @@ export async function generateSpringProject(
 
     fs.mkdirSync(basePackage, { recursive: true });
     fs.mkdirSync(resources, { recursive: true });
-    ["model", "dao", "controller"].forEach(folder => fs.mkdirSync(path.join(basePackage, folder), { recursive: true }));
+    ["model", "dao", "controller"].forEach(folder => 
+        fs.mkdirSync(path.join(basePackage, folder), { recursive: true })
+    );
 
-    fs.writeFileSync(path.join(basePackage, "Application.java"), generateMainClass());
+    const application = generateMainClass();
+    fs.writeFileSync(path.join(basePackage, "Application.java"), application);
 
-    fs.writeFileSync(path.join(resources, "application.properties"), generateSpringProperties(db, dbDetails.dbName));
-    fs.writeFileSync(path.join(resources, "init.sql"), generateInitSql(dbDetails.dbName, dbDetails.tables, db));
+    const props = generateSpringProperties(db, dbDetails.dbName);
+    fs.writeFileSync(path.join(resources, "application.properties"), props);
 
-    if (buildTool === "maven") {fs.writeFileSync(path.join(projectPath, "pom.xml"), `<!-- POM for Spring Boot ${version} -->`);}
-    else {fs.writeFileSync(path.join(projectPath, "build.gradle"), `// Gradle for Spring Boot ${version}`);}
+    const sql = generateInitSql(dbDetails.dbName, dbDetails.tables, db);
+    fs.writeFileSync(path.join(resources, "init.sql"), sql);
+
+    if (buildTool === "maven") {
+        fs.writeFileSync(path.join(projectPath, "pom.xml"), 
+            `<!-- POM for Spring Boot ${version} -->`
+        );
+    } else {
+        fs.writeFileSync(path.join(projectPath, "build.gradle"), 
+            `// Gradle for Spring Boot ${version}`
+        );
+    }
 
     console.log(`Spring Boot project generated at ${projectPath}`);
 }
@@ -44,20 +101,88 @@ public class Application {
 }
 
 function generateSpringProperties(db: Database, dbName: string) {
-    let props = `server.port=8080\nspring.application.name=app\n`;
+    const props: string[] = ["server.port=8080", `spring.application.name=${dbName}`];
+    
     switch (db) {
-        case "PostgreSQL": props += `spring.datasource.url=jdbc:postgresql://localhost:5432/${dbName}\nspring.datasource.username=postgres\nspring.datasource.password=secret\n`; break;
-        case "MySQL": props += `spring.datasource.url=jdbc:mysql://localhost:3306/${dbName}\nspring.datasource.username=root\nspring.datasource.password=secret\n`; break;
-        case "SQLite": props += `spring.datasource.url=jdbc:sqlite:${dbName}.sqlite\n`; break;
+        case "PostgreSQL": 
+            props.push("spring.datasource.url=jdbc:postgresql://localhost:5432/");
+            props.push(`${dbName}?schema=public`);
+            props.push("spring.datasource.username=postgres");
+            props.push("spring.datasource.password=secret");
+            break;
+        case "MySQL": 
+            props.push("spring.datasource.url=jdbc:mysql://localhost:3306/");
+            props.push(`${dbName}?createDatabaseIfNotExist=true`);
+            props.push("spring.datasource.username=root");
+            props.push("spring.datasource.password=secret");
+            break;
+        case "SQLite": 
+            props.push(`spring.datasource.url=jdbc:sqlite:${dbName}.sqlite`);
+            break;
     }
-    return props;
+    
+    return props.join("\\n");
 }
 
 function generateInitSql(dbName: string, tables: string[], db: Database) {
-    let sql = db !== "SQLite" ? `CREATE DATABASE IF NOT EXISTS ${dbName};\nUSE ${dbName};\n\n` : "";
+    const lines: string[] = [];
+    
+    if (db !== "SQLite") {
+        lines.push(`CREATE DATABASE IF NOT EXISTS ${dbName};`);
+        lines.push(`USE ${dbName};`);
+        lines.push("");
+    }
+    
     tables.forEach(table => {
-        const idType = db === "PostgreSQL" ? "BIGSERIAL" : db === "MySQL" ? "BIGINT AUTO_INCREMENT" : "INTEGER PRIMARY KEY AUTOINCREMENT";
-        sql += `CREATE TABLE IF NOT EXISTS ${table} (\n  id ${idType},\n  name VARCHAR(255),\n  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP\n);\n\n`;
+        const idType = db === "PostgreSQL" ? "BIGSERIAL" : 
+                       db === "MySQL" ? "BIGINT AUTO_INCREMENT" : 
+                       "INTEGER PRIMARY KEY AUTOINCREMENT";
+        
+        lines.push(`CREATE TABLE IF NOT EXISTS ${table} (
+  id ${idType},
+  name VARCHAR(255),
+  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);`);
+        lines.push("");
     });
-    return sql;
+    
+    return lines.join("\\n");
 }
+
+async function generateControllers(tables: string[]): Promise<void> {
+    const controllersDir = path.join(
+        process.cwd(),
+        "src", "generator", "java", "controllers"
+    );
+    
+    if (!fs.existsSync(controllersDir)) {
+        fs.mkdirSync(controllersDir, { recursive: true });
+    }
+    
+    const controllers = [
+        `UserController.java`,
+        `ProductController.java`
+    ];
+    
+    controllers.forEach(controller => {
+        const controllerPath = path.join(controllersDir, controller);
+        const controllerName = controller.replace(".java", "");
+        
+        fs.writeFileSync(
+            controllerPath,
+            `package com.example.app.controller;
+
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequestMapping("/api/${controllerName.toLowerCase()}")
+public class ${controllerName}Controller {
+    
+    @GetMapping
+    public List<String> getAll() {
+        return List.of();
+    }
+}`
+        );
+    });
+}
\ No newline at end of file
diff --git a/src/snippets/generatorSnippets.ts b/src/snippets/generatorSnippets.ts
index 8758d0b..f71b1f1 100644
--- a/src/snippets/generatorSnippets.ts
+++ b/src/snippets/generatorSnippets.ts
@@ -5,26 +5,35 @@ import { chooseJsFramework } from "../generator/jsGenerator";
 
 export async function showProjectGenerator() {
     const languages: vscode.QuickPickItem[] = [
-        { label: "Java", description: "Generate Java project boilerplate" },
-        { label: "Python", description: "Generate Python project boilerplate" },
-        { label: "JavaScript / TypeScript", description: "Generate JS/TS project boilerplate" }
+        { 
+            label: "🔥 Java", 
+            description: "Generate Spring Boot, Micronaut or Quarkus project" 
+        },
+        { 
+            label: "🐍 Python", 
+            description: "Generate Flask or FastAPI project" 
+        },
+        { 
+            label: "⚡ JavaScript / TypeScript", 
+            description: "Generate Express, NestJS or Next.js project" 
+        }
     ];
 
     const selectedLanguage = await vscode.window.showQuickPick(languages, {
-        placeHolder: "Choose a language for your project"
+        placeHolder: "Select a programming language to generate your project"
     });
 
-    if (!selectedLanguage) {return;}
-
-    switch (selectedLanguage.label) {
-        case "Java":
-            await chooseJavaFramework();
-            break;
-        case "Python":
-            await choosePythonFramework();
-            break;
-        case "JavaScript / TypeScript":
-            await chooseJsFramework();
-            break;
+    if (!selectedLanguage) {
+        console.log("Project selection cancelled");
+        return;
     }
+
+
+    const actions: Record<string, () => Promise<void>> = {
+        "🔥 Java": () => chooseJavaFramework(),
+        "🐍 Python": () => choosePythonFramework(),
+        "⚡ JavaScript / TypeScript": () => chooseJsFramework()
+    };
+
+    await actions[selectedLanguage.label]?.();
 }
diff --git a/src/templates/java/clean.json b/src/templates/java/clean.json
new file mode 100644
index 0000000..877aaba
--- /dev/null
+++ b/src/templates/java/clean.json
@@ -0,0 +1,16 @@
+{
+  "templateName": "clean-architecture",
+  "description": "Clean Architecture with ports and adapters",
+  "version": "1.0.0",
+  "config": {
+    "package": "CleanArch",
+    "architecture": "clean-architecture",
+    "layers": ["domain", "application", "infrastructure", "presentation"],
+    "files": {
+      "domain": ["User", "UserService", "UserRepository"],
+      "application": ["UserApp", "UserCommand"],
+      "infrastructure": ["UserEntity", "MySQLEntity"],
+      "presentation": ["UserController", "UserRequest", "UserResponse"]
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/templates/java/javaTemplates.ts b/src/templates/java/javaTemplates.ts
new file mode 100644
index 0000000..0ea4a21
--- /dev/null
+++ b/src/templates/java/javaTemplates.ts
@@ -0,0 +1,80 @@
+import * as vscode from "vscode";
+import * as fs from "fs";
+import * as path from "path";
+
+interface Template {
+  name: string;
+  description: string;
+  structure: {
+    controllers: string[];
+    models: string[];
+    services: string[];
+  };
+  dependencies: string[];
+}
+
+export async function chooseSpringTemplate(): Promise<Template> {
+  const templates: vscode.QuickPickItem[] = [
+    { label: "📄 REST API Template", description: "Simple REST controllers" },
+    { label: "🏛️ Clean Architecture", description: "Ports and adapters pattern" },
+    { label: "🔗 Microservices", description: "Spring Cloud services" },
+    { label: "⚙️ Project Structure", description: "Customizable structure" },
+  ];
+
+  const result = await vscode.window.showQuickPick(templates, {
+    placeHolder: "Choose Spring Boot template",
+  });
+
+  if (!result) {
+    return {
+      name: "basic",
+      description: "Basic project structure",
+      structure: {
+        controllers: ["HelloController.java"],
+        models: ["User.java"],
+        services: ["UserService.java"],
+      },
+      dependencies: ["spring-boot-starter-web"],
+    } as Template;
+  }
+
+  // Parse templates from JSON files
+  const template = await loadTemplate(result.label);
+  return template;
+}
+
+async function loadTemplate(name: string): Promise<Template> {
+  const templatesDir = path.join(__dirname, "../../templates/java");
+  const templatesPath = await findTemplatesAsync(templatesDir);
+  
+  const jsonPath = templatesPath.find((p) => path.basename(p) === `${name}.json`);
+  
+  if (!jsonPath) {
+    throw new Error(`Template ${name} not found`);
+  }
+
+  const templateData = await fs.promises.readFile(jsonPath, "utf-8");
+  const template = JSON.parse(templateData);
+  
+  return {
+    name: template.templateName,
+    description: template.description,
+    structure: template.config || {},
+    dependencies: template.dependencies || [],
+  } as Template;
+}
+
+async function findTemplatesAsync(dir: string): Promise<string[]> {
+  if (!fs.existsSync(dir)) {
+    return [];
+  }
+  
+  try {
+    const files = fs.readdirSync(dir);
+    return files
+      .filter(file => file.endsWith(".json"))
+      .map(file => path.join(dir, file));
+  } catch (error) {
+    return [];
+  }
+}
\ No newline at end of file
diff --git a/src/templates/java/microservices.json b/src/templates/java/microservices.json
new file mode 100644
index 0000000..4154768
--- /dev/null
+++ b/src/templates/java/microservices.json
@@ -0,0 +1,29 @@
+{
+  "templateName": "microservices",
+  "description": "Microservices architecture with Spring Cloud",
+  "version": "1.0.0",
+  "config": {
+    "package": "Microservice",
+    "architecture": "microservices",
+    "services": {
+      "user-service": {
+        "package": "userService",
+        "controllers": ["UserController"],
+        "models": ["User"],
+        "services": ["UserService"],
+        "ports": ["UserPort"]
+      },
+      "product-service": {
+        "package": "productService",
+        "controllers": ["ProductController"],
+        "models": ["Product"],
+        "services": ["ProductService"],
+        "ports": ["ProductPort"]
+      }
+    },
+    "config": {
+      "discovery": "eureka",
+      "gateway": "spring-cloud-gateway"
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/templates/java/rest.json b/src/templates/java/rest.json
new file mode 100644
index 0000000..432034e
--- /dev/null
+++ b/src/templates/java/rest.json
@@ -0,0 +1,14 @@
+{
+  "templateName": "rest-template",
+  "description": "Simple REST API structure",
+  "version": "1.0.0",
+  "config": {
+    "package": "RestController",
+    "architecture": "simple-rest",
+    "files": {
+      "controllers": ["userController", "productController"],
+      "models": ["User", "Product"],
+      "services": ["UserService", "ProductService"]
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/templates/javascript/nestjs.json b/src/templates/javascript/nestjs.json
new file mode 100644
index 0000000..446096f
--- /dev/null
+++ b/src/templates/javascript/nestjs.json
@@ -0,0 +1,5 @@
+{
+  "templateName": "nestjs",
+  "description": "NestJS professional structure",
+  "version": "1.0.0"
+}
\ No newline at end of file
diff --git a/src/templates/javascript/simple.json b/src/templates/javascript/simple.json
new file mode 100644
index 0000000..071708e
--- /dev/null
+++ b/src/templates/javascript/simple.json
@@ -0,0 +1,5 @@
+{
+  "templateName": "simple",
+  "description": "Simple project structure",
+  "version": "1.0.0"
+}
\ No newline at end of file