Lingara Lingara 文档 学习指南 API 库 应用 构建 网页版
语言: 中文简体

欧洲

亚洲

中东

非洲

快速入门

本页译自英文。如两者有出入，以英文页面为准。 阅读英文页面

本页带你把一个应用从零做到出现在你自己账户上的一张卡片。下面的示例在每种语言中都遵循相同的步骤。

创建 OAuth 客户端

应用就是带有清单的 OAuth 客户端，所以先从客户端开始。在控制台的 OAuth 客户端页面创建一个，并为它授予你的应用需要的 API 权限，例如读取课程计划。它的客户端 ID 和密钥让你的服务器能以你的应用的身份调用 Lingara API。把它们保存在服务器的环境中。

构建并上传清单

清单向 Lingara 描述你的应用：

  • 它的名称和描述，使用一种主要语言，并可附带翻译；
  • render_url，Lingara 发送请求的 HTTPS 地址；
  • 它的卡片可以出现的位置；
  • 它要求查看的上下文，由学习者在安装时同意（参见上下文与同意）；
  • 它需要的 API 权限，其 OAuth 客户端必须已经拥有这些权限；
  • 它是否可以向导师提供一条备注（参见导师备注）。

工具包会把清单构建为 JSON，并按照上传时适用的规则检查它，所以错误会先在你自己的机器上暴露出来。在控制台的“应用”页面，选择你的客户端，将其变为应用，然后上传该文件。

创建签名密钥

在同一页面上创建一个签名密钥。它只会显示一次。通过环境把它交给你的服务器，绝不要把它提交到源代码管理中。Lingara 用它为发往你的应用的每个请求签名，签名不匹配的请求会被工具包拒绝。一个应用可以同时拥有两个密钥，因此你可以在不停机的情况下替换其中一个：两个密钥同时有效时，每个请求都会用这两个密钥签名。

编写渲染函数

你的渲染函数接收一个请求并返回一张卡片。请求会说明位置、学习者的语言、他们同意共享的上下文，以及 subject，这是一个向你的应用标识该学习者的稳定值。你按学习者存储的任何内容都放在 subject 之下。卡片上的按钮会发送一个操作，你的服务器以一张新卡片作答。卡片页面列出了卡片可以包含的全部内容。

挂载适配器

工具包的适配器读取原始请求、校验其签名、调用你的函数并写出回复。在你的清单中 render_url 指定的地址上提供它。Lingara 只调用公共互联网上的 HTTPS 地址。

安装到你自己的账户

在控制台的“应用”页面，选择把应用安装到你的账户，选好它可以查看的内容，然后确认。在宽屏幕上打开课程计划页面，或在网页上打开首页，你的卡片就会出现。

你的应用的 OAuth 客户端还会接收事件，例如某个课程计划已就绪。API 参考中的 webhooks 与事件指南对它们有说明。

代码示例语言

TypeScript

npm install @lingara/apps@0.1.0-alpha.6

Rust

cargo add lingara-apps@0.1.0-alpha.6 --features axum
cargo add axum@0.8
cargo add tokio --features macros,net,rt-multi-thread

Go

go get github.com/Spinning-Cat-Studios/lingara_app_framework_sdk/go@v0.1.0-alpha.6

Java

<dependency>
  <groupId>com.getlingara</groupId>
  <artifactId>lingara-apps-java</artifactId>
  <version>0.1.0-alpha.6</version>
</dependency>

Kotlin

implementation("com.getlingara:lingara-apps-kotlin:0.1.0-alpha.6")

Ruby

gem install lingara-apps -v 0.1.0-alpha.6

PHP

composer require spinningcatstudios/lingara-apps:0.1.0-alpha.6 spinningcatstudios/lingara:@alpha
代码示例语言

TypeScript

import { manifest } from "@lingara/apps";

const json = manifest()
  .defaultLocale("en")
  .name({ en: "Daily five", "zh-Hans": "每日五词" })
  .description("Five words to review, picked from your plan.")
  .renderUrl("https://apps.example.com/lingara/render")
  .slots("home.side", "plans.empty_detail")
  .context("languages", "plan_summary")
  // `.scopes(…)` lists the API scopes your client uses, for the learner's consent page. This app uses none.
  .tutorNote()
  .toJson(); // Throws ManifestError naming the rule an upload would refuse.

writeFileSync("manifest.json", json); // Upload it in the console.

Rust

let manifest = manifest()
    .default_locale("en")
    .name("Daily five")
    .description("Five words to review, picked from your plan.")
    .render_url("https://apps.example.com/lingara/render")
    .slots([AppSlotName::HomeSide, AppSlotName::PlansEmptyDetail])
    .context([ContextSliceKind::Languages, ContextSliceKind::PlanSummary])
    // `.scopes(…)` lists the API scopes your client uses, for the learner's consent page. This app uses none.
    .tutor_note(true)
    .build()?;
std::fs::write("manifest.json", manifest.to_json())?;

Go

manifest, err := lingaraapps.NewManifest().
	DefaultLocale("en").
	Names(map[string]string{"en": "Daily five", "zh-Hans": "每日五词"}).
	Description("Five words to review, picked from your plan.").
	RenderURL("https://apps.example.com/lingara").
	Slots(lingaraapps.AppSlotNameHomeSide, lingaraapps.AppSlotNamePlansEmptyDetail).
	Context(lingaraapps.ContextSliceKindLanguages, lingaraapps.ContextSliceKindPlanSummary).
	// `.Scopes(…)` lists the API scopes your client uses, for the learner's consent page. This app uses none.
	TutorNote(true).
	Build()
if err != nil {
	return err // a *lingaraapps.ManifestError names the broken rule
}
data, err := manifest.ToJSON()
if err != nil {
	return err
}
// Upload manifest.json in the console.
err = os.WriteFile("manifest.json", data, 0o644)

Java

import com.getlingara.apps.Manifest;
import com.getlingara.apps.model.AppSlotName;
import com.getlingara.apps.model.ContextSliceKind;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;

String json =
    Manifest.manifest()
        .defaultLocale("en")
        .name("Daily five")
        .description("Five words to review, picked from your plan.")
        .renderUrl("https://apps.example.com/lingara/render")
        .slots(AppSlotName.HOME_SIDE)
        .context(ContextSliceKind.LANGUAGES, ContextSliceKind.PLAN_SUMMARY)
        // `.scopes(…)` lists the API scopes your client uses, for the learner's consent
        // page. This app uses none.
        .tutorNote(true)
        .build() // refuses what the upload would, naming the rule
        .toJson();
// Upload manifest.json in the console, beside the app's icon.
Files.writeString(Path.of("manifest.json"), json);

Kotlin

import com.getlingara.apps.kotlin.manifest
import com.getlingara.apps.kotlin.model.AppSlotName
import com.getlingara.apps.kotlin.model.ContextSliceKind
import java.io.File

val json =
    manifest {
        defaultLocale = "en"
        name("Daily five")
        description("Five words to review, picked from your plan.")
        renderUrl = "https://apps.example.com/lingara/render"
        slots(AppSlotName.HOME_PERIOD_SIDE)
        context(ContextSliceKind.LANGUAGES, ContextSliceKind.PLAN_SUMMARY)
        // `scopes(…)` lists the API scopes your client uses, for the learner's consent page.
        // This app uses none.
        tutorNote = true
    }.toJson() // refuses what the upload would, naming the rule
// Upload manifest.json in the console, beside the app's icon.
File("manifest.json").writeText(json)

Ruby

manifest = Lingara::Apps.manifest
  .default_locale("en")
  .name("Daily five") # A bare String is the default locale's; or {"en" => …, "zh-Hans" => …}.
  .description("Five words to review, picked from your plan.")
  .render_url("https://apps.example.com/lingara")
  .slots("home.side", "plans.empty_detail")
  .context("languages", "plan_summary")
  # `.scopes(…)` lists the API scopes your client uses, for the learner's consent page. This app uses none.
  .tutor_note
# Raises Lingara::Apps::ManifestError naming the rule the upload would refuse.
File.write("manifest.json", manifest.to_json)

PHP

use Lingara\Apps\Generated\AppSlotName;
use Lingara\Apps\Manifest;

$json = Manifest::create()
    ->defaultLocale('en')
    ->name(['en' => 'Daily five', 'zh-Hans' => '每日五词'])
    ->description('Five words to review, picked from your plan.')
    ->renderUrl('https://apps.example.com/lingara/render')
    ->slots(AppSlotName::HOME_SIDE, AppSlotName::PLANS_EMPTY_DETAIL)
    ->context('languages', 'plan_summary')
    // `->scopes(…)` lists the API scopes your client uses, for the learner's consent page. This app uses none.
    ->tutorNote()
    ->toJson(); // Throws ManifestException naming the rule an upload would refuse.

file_put_contents('manifest.json', $json); // Upload it in the console.
代码示例语言

TypeScript

const app = lingaraApp({
  // lgr_whsec_…, from the app's settings; pass two during a rotation.
  secret: process.env.LINGARA_APP_SECRET!,
  // Hold per-learner state on `subject`, the same value your events carry.
  render: (request) => (request.slot === "home.side" ? withNote(request) : todayCard(streaks.get(request.subject) ?? 0)),
  actions: {
    // The button's `action`; may arrive twice, so make it safe to repeat.
    done: (request) => {
      streaks.set(request.subject, (streaks.get(request.subject) ?? 0) + 1);
      return todayCard(streaks.get(request.subject)!);
    },
  },
});

Rust

// The app's signing secret (lgr_whsec_…), from the environment.
let seen = Seen::default();
let (render_seen, action_seen) = (Arc::clone(&seen), Arc::clone(&seen));
let app = App::new([std::env::var("LINGARA_APP_SECRET")?], move |request: AppRenderRequest| {
    render(Arc::clone(&render_seen), request)
})?
// The button's `action` comes back as `action_id`. An action can arrive
// twice, so keep it safe to repeat.
.action("next", move |request: AppActionRequest| {
    let seen = Arc::clone(&action_seen);
    async move {
        *seen.lock().map_err(|_| "poisoned")?.entry(request.subject).or_default() += 1;
        today_card("Next word", "zh")
    }
});

Go

// Per-learner state is keyed on Subject, the lgr_sub_… value the app's
// events carry too.
var mu sync.Mutex
streaks := map[string]int{}

render := func(ctx context.Context, req lingaraapps.AppRenderRequest) (lingaraapps.Replier, error) {
	mu.Lock()
	days := streaks[req.Subject]
	mu.Unlock()
	return lingaraapps.NewCard().
		Heading("Daily five", 1).
		Progress(float64(days%5)/5, "This week").
		Button("Done today", "done").
		Build()
}
// An action may arrive twice: make it safe to run twice.
done := func(ctx context.Context, req lingaraapps.AppActionRequest) (lingaraapps.Replier, error) {
	mu.Lock()
	streaks[req.Subject]++
	mu.Unlock()
	return lingaraapps.NewCard().Heading("Nice work", 1).Text("See you tomorrow.").Build()
}
app := lingaraapps.App{
	Render:  render,
	Actions: map[string]lingaraapps.ActionFunc{"done": done},
}

Java

import com.getlingara.apps.Card;
import com.getlingara.apps.LingaraApp;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

// Per-learner state is keyed on subject, the value the app's events carry too.
Map<String, Integer> seen = new ConcurrentHashMap<>();
LingaraApp app =
    LingaraApp.builder()
        // The app's signing secret (lgr_whsec_…); pass two during a rotation.
        .secrets(System.getenv("LINGARA_APP_SECRET"))
        .render(
            request -> {
              int count = seen.getOrDefault(request.getSubject(), 0);
              return Card.card()
                  .heading("Today's five", 1)
                  .text("Reviewed " + count + " so far.")
                  .button("Next", "next")
                  .build();
            })
        // The button's action comes back as the request's action_id. It may arrive
        // twice, so make it safe to repeat.
        .action(
            "next",
            request -> {
              int count = seen.merge(request.getSubject(), 1, Integer::sum);
              return Card.card().progress(Math.min(1.0, count / 5.0), count + " of 5").build();
            })
        .build();

Kotlin

import com.getlingara.apps.kotlin.LingaraApp
import com.getlingara.apps.kotlin.card
import com.getlingara.apps.kotlin.lingaraApp
import java.util.concurrent.ConcurrentHashMap

// Per-learner state is keyed on subject, the value the app's events carry too.
val seen = ConcurrentHashMap<String, Int>()
val app =
    lingaraApp {
        // The app's signing secret (lgr_whsec_…); pass two during a rotation.
        secrets(System.getenv("LINGARA_APP_SECRET"))
        render { request ->
            val count = seen.getOrDefault(request.subject, 0)
            card {
                heading("Today's five", 1)
                text("Reviewed $count so far.")
                button("Next", "next")
            }
        }
        // The button's action comes back as the request's action_id. It may arrive twice,
        // so make it safe to repeat.
        action("next") { request ->
            val count = seen.merge(request.subject, 1, Int::plus) ?: 1
            card { progress(minOf(1.0, count / 5.0), "$count of 5") }
        }
    }

Ruby

# lgr_whsec_…, from the app's settings; pass an Array of two during a rotation.
app = Lingara::Apps::App.new(secret: ENV.fetch("LINGARA_APP_SECRET"))
# Hold per-learner state on `subject`, the same value your events carry.
app.render do |request|
  (request.slot == "home.side") ? with_note(request) : today_card(STREAKS[request.subject])
end
# The button's `action`; it may arrive twice, so make it safe to repeat.
app.action("done") do |request|
  STREAKS[request.subject] += 1
  today_card(STREAKS[request.subject])
end

PHP

use Lingara\Apps\App;
use Lingara\Apps\Generated\AppActionRequest;
use Lingara\Apps\Generated\AppRenderRequest;

$app = new App(
    // lgr_whsec_…, from the app's settings; pass a list of two during a rotation.
    secret: (string) getenv('LINGARA_APP_SECRET'),
    // Hold per-learner state on `subject`, the same value your events carry.
    render: static fn(AppRenderRequest $request) => $request->getSlot() === AppSlotName::HOME_SIDE
        ? withNote($request)
        : todayCard($streaks[$request->getSubject()] ?? 0),
    actions: [
        // The button's `action`; may arrive twice, so make it safe to repeat.
        'done' => static function (AppActionRequest $request) use (&$streaks): CardModel {
            $streaks[$request->getSubject()] = ($streaks[$request->getSubject()] ?? 0) + 1;
            return todayCard($streaks[$request->getSubject()]);
        },
    ],
);
代码示例语言

TypeScript

// A node:http request listener: it reads the raw body, verifies, dispatches and replies.
createServer(nodeHandler(app)).listen(8787);

Rust

// Nest the adapter at the path your manifest's render_url names.
let routes = axum::Router::new().nest("/lingara/render", lingara_apps::axum::router(app));
let listener = tokio::net::TcpListener::bind("0.0.0.0:8080").await?;
axum::serve(listener, routes).await?;

Go

// The app's signing secret, lgr_whsec_…, or both during a rotation.
handler, err := lingaraapps.NewHandler(app, os.Getenv("LINGARA_APP_SECRET"))
if err != nil {
	return err // a malformed secret fails here, at startup
}
mux := http.NewServeMux()
mux.Handle("/lingara", handler)
err = http.ListenAndServe(":8080", mux)

Java

import com.getlingara.apps.JdkHttpHandler;
import com.getlingara.apps.LingaraApp;
import com.sun.net.httpserver.HttpServer;
import java.io.IOException;
import java.net.InetSocketAddress;

// The JDK's own server: the handler reads the raw body, verifies it, then dispatches.
HttpServer server = HttpServer.create(new InetSocketAddress(8080), 0);
server.createContext("/lingara/render", JdkHttpHandler.of(app));
server.start();

Kotlin

import com.getlingara.apps.kotlin.LingaraApp
import com.getlingara.apps.kotlin.ktor.lingaraApp
import io.ktor.server.cio.CIO
import io.ktor.server.engine.embeddedServer
import io.ktor.server.routing.route
import io.ktor.server.routing.routing

// Route.lingaraApp reads the raw body itself, so content negotiation never parses it.
embeddedServer(CIO, port = 8080) {
    routing {
        route("/lingara/render") { lingaraApp(app) }
    }
}.start(wait = true)

Ruby

# config.ru: any Rack server (Puma, Falcon, rackup) runs it. It reads the
# raw body itself, so mount it where nothing has parsed the JSON first.
run Lingara::Apps::RackApp.new(app)

PHP

use Lingara\Apps\Psr15Handler;
use Nyholm\Psr7\Factory\Psr17Factory;
use Nyholm\Psr7Server\ServerRequestCreator;

// A PSR-15 handler: mount it on your framework's route, or answer from a
// front controller as here. It reads the raw body, verifies, dispatches and replies.
$factory = new Psr17Factory();
$handler = new Psr15Handler($app, $factory, $factory);
$response = $handler->handle((new ServerRequestCreator($factory, $factory, $factory, $factory))->fromGlobals());
http_response_code($response->getStatusCode());
foreach ($response->getHeaders() as $name => $values) {
    header("{$name}: " . implode(', ', $values));
}
echo $response->getBody();

另请参阅