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https://github.com/baloise/vue-keycloak

Keycloak plugin for Vue3 and Composition API
https://github.com/baloise/vue-keycloak

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Keycloak plugin for Vue3 and Composition API

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# vue-keycloak

A small wrapper library for the [Keycloak JavaScript adapter](https://www.keycloak.org/docs/latest/securing_apps/#_javascript_adapter).

> The library is made for [Vue 3.x.x](https://v3.vuejs.org/) and the [Composiotion API](https://v3.vuejs.org/api/composition-api.html).

## Instalation

Install the [keycloak-js](https://www.keycloak.org/docs/latest/securing_apps/#_javascript_adapter) package , [jwt-decode](https://www.npmjs.com/package/jwt-decode) to decode the jwt token and our wrapper library with npm.

```bash
npm install keycloak-js jwt-decode @baloise/vue-keycloak
```

## Use plugin

Import the library into your `src/main.ts` file or any other entry point.

```typescript
import { vueKeycloak } from '@baloise/vue-keycloak'
```

Apply the library to the vue app instance.

```typescript
const app = createApp(App)

app.use(vueKeycloak, {
initOptions: {
flow: 'standard', // default
checkLoginIframe: false, // default
onLoad: 'login-required', // default
}
config: {
url: 'http://keycloak-server/auth',
realm: 'myrealm',
clientId: 'myapp'
}
})
```

Or use a JSON file with the configs.

```typescript
app.use(vueKeycloak, '/keycloak.json')
```

### Configuration

| Config | Type | Description |
| ----------- | ------------------------------ | ---------------------------------------- |
| initOptions | `Keycloak.KeycloakInitOptions` | `initOptions` is Keycloak init options. |
| config | `Keycloak.KeycloakConfig` | `config` are the Keycloak configuration. |

Use the example below to generate dynamic Keycloak conifiguration.

```typescript
app.use(vueKeycloak, async () => {
return {
config: {
url: (await getAuthBaseUrl()) + '/auth',
realm: 'myrealm',
clientId: 'myapp',
},
initOptions: {
onLoad: 'check-sso',
silentCheckSsoRedirectUri: window.location.origin + '/assets/silent-check-sso.html',
},
}
})
```

> It is also possible to access the keycloak instance with `getKeycloak()`

## Use Token

We export two helper functions for the token.

### getToken

This function checks if the token is still valid and will update it if it is expired.

> Have a look at our [vueAxios](https://github.com/baloise/vue-axios) plugin.

```typescript
import { $axios } from '@baloise/vue-axios'
import { getToken } from '@baloise/vue-keycloak'

const axiosApiInstance = $axios.create()

// Request interceptor for API calls
axiosApiInstance.interceptors.request.use(
async config => {
const token = await getToken()
config.headers = {
Authorization: `Bearer ${token}`,
}
return config
},
error => {
Promise.reject(error)
},
)
```

## Composition API

```typescript
import { computed, defineComponent } from 'vue'
import { useKeycloak } from '@baloise/vue-keycloak'

export default defineComponent({
setup() {
const { hasRoles, isPending } = useKeycloak()

const hasAccess = computed(() => hasRoles(['RoleName']))

return {
hasAccess,
}
},
})
```

### useKeycloak

The `useKeycloak` function exposes the following reactive state.

```typescript
import { useKeycloak } from '@baloise/vue-keycloak'

const {
isAuthenticated,
isPending,
hasFailed,
token,
decodedToken,
username,
roles,
resourceRoles,
keycloak,

// Functions
hasRoles,
hasResourceRoles,
} = useKeycloak()
```

| State | Type | Description |
| --------------- | ------------------------------ | ------------------------------------------------------------------- |
| isAuthenticated | `Ref` | If `true` the user is authenticated. |
| isPending | `Ref` | If `true` the authentication request is still pending. |
| hasFailed | `Ref` | If `true` authentication request has failed. |
| token | `Ref` | `token` is the raw value of the JWT token. |
| decodedToken | `Ref` | `decodedToken` is the decoded value of the JWT token. |
| username | `Ref` | `username` the name of our user. |
| roles | `Ref` | `roles` is a list of the users roles. |
| resourceRoles | `Ref` | `resourceRoles` is a list of the users roles in specific resources. |
| keycloak | `Keycloak.KeycloakInstance` | `keycloak` is the instance of the keycloak-js adapter. |

#### Functions

| Function | Type | Description |
| ---------------- | ------------------------------------------------ | ---------------------------------------------------------------------------------- |
| hasRoles | `(roles: string[]) => boolean` | `hasRoles` returns true if the user has all the given roles. |
| hasResourceRoles | `(roles: string[], resource: string) => boolean` | `hasResourceRoles` returns true if the user has all the given roles in a resource. |

# License

Apache-2.0 Licensed | Copyright © 2021-present Gery Hirschfeld & Contributors