### Generating API Files

Source: https://github.com/jzero-io/jzero/blob/main/docs/src/guide/develop/api.md

Provides an example of using the `jzero ivm add api` command to generate new API files and configure handlers.

```APIDOC
## Generating API Files

### Description
This section details how to use the `jzero` command-line tool to automatically generate API files and configure associated handlers.

### Method
Command Line

### Endpoint
N/A

### Parameters
#### Command Line Arguments
- **jzero ivm add api --name user**: Command to add a new API file named 'user'.
- **jzero ivm add api --name user --handlers get:List,get:Get,post:Edit,get:Delete**: Command to add an API file named 'user' with predefined handlers for GET, POST requests.

### Request Example
```shell
jzero ivm add api --name user
```

```shell
jzero ivm add api --name user --handlers get:List,get:Get,post:Edit,get:Delete
```
```

--------------------------------

### API go_package 分组配置

Source: https://github.com/jzero-io/jzero/blob/main/docs/src/guide/develop/api.md

演示了如何使用 `go_package` 选项来根据 proto 文件的模式对生成的结构体进行分组。这有助于避免 `types/types.go` 文件过于庞大，并解决命名冲突问题。

```shell
syntax = "v1"

info (
	go_package: "version"
)
```

--------------------------------

### 使用 etcd 作为注册中心替换 fsnotify

Source: https://github.com/jzero-io/jzero/blob/main/docs/src/guide/config/configcenter.md

演示如何使用 etcd 作为配置中心的注册中心。需要 go-zero 核心库和 etcd 订阅者。配置 etcd 地址和 key。

```go
package main

import (
	"fmt"

	subscriber "github.com/zeromicro/go-zero/core/configcenter/subscriber"
	configurator "github.com/zeromicro/go-zero/core/configcenter"
)

type Config struct {
	Name string `json:"name"`
	DatabaseType string `json:"databaseType"`
}

func main() {
	cc := configurator.MustNewConfigCenter[Config](configurator.Config{
		Type: "yaml",
	},subscriber.MustNewEtcdSubscriber(subscriber.EtcdConf{
		Hosts: []string{"localhost:2379"}, // etcd 地址
		Key:   "test1",    // 配置key
	}))

	config , err := cc.GetConfig()
	if err != nil {
		panic(err)
	}
	fmt.Println(config)
}
```

--------------------------------

### 使用 fsnotify 实现配置中心

Source: https://github.com/jzero-io/jzero/blob/main/docs/src/guide/config/configcenter.md

演示如何使用 fsnotify 作为配置中心，加载 YAML 文件。需要 go-zero 核心库和 fsnotify 订阅者。

```go
package main 

import (
	"fmt"
	"github.com/jzero-io/jzero/core/configcenter/subscriber"
	configurator "github.com/zeromicro/go-zero/core/configcenter"
)

type Config struct {
    Name string `json:"name"`
    DatabaseType string `json:"databaseType"`
}

func main() {
	cfgFile := "config.yaml"
	cc := configurator.MustNewConfigCenter[Config](configurator.Config{
		Type: "yaml",
	}, subscriber.MustNewFsnotifySubscriber(cfgFile, subscriber.WithUseEnv(true)))
	
	config , err := cc.GetConfig()
	if err != nil {
		panic(err)
	}
	fmt.Println(config)
}
```

```yaml
name: jzero
databaseType: mysql
```

--------------------------------

### 自动生成 API 文件命令

Source: https://github.com/jzero-io/jzero/blob/main/docs/src/guide/develop/api.md

提供了使用 `jzero ivm add api` 命令自动生成 API 文件的示例。包括基本命令和带有指定 HTTP 方法的完整命令。

```shell
jzero ivm add api --name user
```

```shell
jzero ivm add api --name user --handlers get:List,get:Get,post:Edit,get:Delete
```

--------------------------------

### 合并 API Group Handler 和 Logic

Source: https://github.com/jzero-io/jzero/blob/main/docs/src/guide/develop/api.md

展示了如何通过 `compact_handler` 和 `compact_logic` 选项将同一个 group 下的 handler 和 logic 合并到同一个文件中。这可以简化项目结构并提高开发效率。

```shell
@server (
	prefix:          /api/v1
	group:           system/user
	compact_handler: true
	compact_logic: true
)
service simpleapi {
	@handler GetUserHandler
	get /system/user/getUser (GetUser2Request) returns (GetUserResponse)

	@handler DeleteUserHandler
	get /system/user/deleteUser (DeleteUserRequest) returns (DeleteUserResponse)
}
```

--------------------------------

### Consolidating Handlers and Logic within a Group

Source: https://github.com/jzero-io/jzero/blob/main/docs/src/guide/develop/api.md

Shows how to combine handlers and logic for the same group into a single file using `compact_handler` and `compact_logic` options.

```APIDOC
## Consolidating Handlers and Logic within a Group

### Description
This configuration allows consolidating multiple handlers and their corresponding logic into a single file for a given group. This can simplify project structure and improve developer experience.

### Method
N/A (This is a definition example)

### Endpoint
N/A

### Parameters
#### Request Body
- **@server** (annotation) - Specifies server-level configurations.
  - **prefix** (string) - The base URL prefix for the API group.
  - **group** (string) - The logical grouping name for related endpoints.
  - **compact_handler** (boolean) - If true, consolidates handlers.
  - **compact_logic** (boolean) - If true, consolidates logic.
- **service simpleapi** (service definition) - Defines the API service.
  - **@handler GetUserHandler** (annotation) - Defines a handler for getting user information.
    - **get /system/user/getUser (GetUser2Request) returns (GetUserResponse)** - GET request for user retrieval.
  - **@handler DeleteUserHandler** (annotation) - Defines a handler for deleting user information.
    - **get /system/user/deleteUser (DeleteUserRequest) returns (DeleteUserResponse)** - GET request for user deletion.

### Request Example
```shell {"4","5"}
@server (
	prefix:          /api/v1
	group:           system/user
	compact_handler: true
	compact_logic: true
)
service simpleapi {
	@handler GetUserHandler
	get /system/user/getUser (GetUser2Request) returns (GetUserResponse)

	@handler DeleteUserHandler
	get /system/user/deleteUser (DeleteUserRequest) returns (DeleteUserResponse)
}
```
```

--------------------------------

### API 字段校验示例 (go-playground/validator)

Source: https://github.com/jzero-io/jzero/blob/main/docs/src/guide/develop/api.md

展示了如何使用 go-zero 集成的 validator 库进行 API 请求的字段校验。通过 `validate` 标签为字段定义校验规则，例如最小和最大长度。

```shell
syntax = "v1"

type CreateRequest {
    name string `json:"name" validate:"gte=2,lte=30"` // 名称
}
```

--------------------------------

### Grouping Types by go_package

Source: https://github.com/jzero-io/jzero/blob/main/docs/src/guide/develop/api.md

Explains how to use the `go_package` option to group generated structs based on Go package, preventing naming conflicts and improving organization.

```APIDOC
## Grouping Types by go_package

### Description
The `go_package` option, similar to proto files, allows grouping of generated structs based on a specified package name. This helps in organizing types and avoiding naming collisions, especially in large projects.

### Method
N/A (This is a definition example)

### Endpoint
N/A

### Parameters
#### Request Body
- **info** (type) - Optional - Configuration for grouping.
  - **go_package** (string) - Specifies the Go package for generated types.

### Request Example
```shell {"3","4","5","6"}
syntax = "v1"

info (
	go_package: "version"
)
```
```

--------------------------------

### API Field Validation

Source: https://github.com/jzero-io/jzero/blob/main/docs/src/guide/develop/api.md

Demonstrates how go-zero integrates with go-playground/validator for field validation within API definitions.

```APIDOC
## API Field Validation

### Description
Go-zero integrates with `go-playground/validator` for field validation. This example shows how to define validation rules for a request field.

### Method
N/A (This is a definition example)

### Endpoint
N/A

### Parameters
#### Request Body
- **name** (string) - Required - The name field with validation rules: minimum length 2, maximum length 30.

### Request Example
```shell {"4"}
syntax = "v1"

type CreateRequest {
    name string `json:"name" validate:"gte=2,lte=30"` // 名称
}
```
```

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