update SDK doc, use it as sdk package readme

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Bruno Windels 2021-12-22 16:20:54 +01:00
parent 441fa13bfd
commit c3ff571af7
2 changed files with 67 additions and 56 deletions

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# How to use Hydrogen as an SDK
# Hydrogen View SDK
If you want to use end-to-end encryption, it is recommended to use a [supported build system](../src/sdk/paths/) (currently only vite) to be able to locate the olm library files.
**NOTE**: For now, these instructions will only work at development time, support when building (e.g. `vite build`) is being worked on and tracked in [#529](https://github.com/vector-im/hydrogen-web/issues/529).
The Hydrogen view SDK allows developers to integrate parts of the Hydrogen application into the UI of their own application. Hydrogen is written with the MVVM pattern, so to construct a view, you'd first construct a view model, which you then pass into the view. For most view models, you will first need a running client.
You can create a project using the following commands
## Example
The Hydrogen SDK requires some assets to be shipped along with your app for things like downloading attachments, and end-to-end encryption. A convenient way to make this happen is provided by the SDK (importing `hydrogen-view-sdk/paths/vite`) but depends on your build system. Currently, only [vite](https://vitejs.dev/) is supported, so that's what we'll be using in the example below.
You can create a vite project using the following commands:
```sh
# you can pick "vanilla-ts" here for project type if you're not using react or vue
yarn create vite
cd <your-project-name>
yarn
yarn add https://github.com/vector-im/hydrogen-web.git
yarn add hydrogen-view-sdk
```
If you go into the `src` directory, you should see a `main.ts` file. If you put this code in there, you should see a basic timeline after login and initial sync have finished.
You should see a `index.html` in the project root directory, containing an element with `id="app"`. Add the attribute `class="hydrogen"` to this element, as the CSS we'll include from the SDK assumes for now that the app is rendered in an element with this classname.
If you go into the `src` directory, you should see a `main.ts` file. If you put this code in there, you should see a basic timeline after login and initial sync have finished (might take a while before you see anything on the screen actually).
You'll need to provide the username and password of a user that is already in the [#element-dev:matrix.org](https://matrix.to/#/#element-dev:matrix.org) room (or change the room id).
```ts
import {
Platform,
SessionContainer,
Client,
LoadStatus,
createNavigation,
createRouter,
RoomViewModel,
TimelineView
} from "hydrogen-web";
import {olmPaths, downloadSandboxPath} from "hydrogen-web/src/sdk/paths/vite";
} from "hydrogen-view-sdk";
import assetPaths from "hydrogen-view-sdk/paths/vite";
import "hydrogen-view-sdk/style.css";
const app = document.querySelector<HTMLDivElement>('#app')!
// bootstrap a session container
const platform = new Platform(app, {
downloadSandbox: downloadSandboxPath,
olm: olmPaths,
}, null, { development: true });
const navigation = createNavigation();
platform.setNavigation(navigation);
const urlRouter = createRouter({
navigation: navigation,
history: platform.history
});
urlRouter.attach();
const sessionContainer = new SessionContainer({
platform,
olmPromise: platform.loadOlm(),
workerPromise: platform.loadOlmWorker()
});
// wait for login and first sync to finish
const loginOptions = await sessionContainer.queryLogin("matrix.org").result;
sessionContainer.startWithLogin(loginOptions.password("user", "password"));
await sessionContainer.loadStatus.waitFor((status: string) => {
return status === LoadStatus.Ready ||
status === LoadStatus.Error ||
status === LoadStatus.LoginFailed;
}).promise;
// check the result
if (sessionContainer.loginFailure) {
alert("login failed: " + sessionContainer.loginFailure);
} else if (sessionContainer.loadError) {
alert("load failed: " + sessionContainer.loadError.message);
} else {
// we're logged in, we can access the room now
const {session} = sessionContainer;
// room id for #element-dev:matrix.org
const room = session.rooms.get("!bEWtlqtDwCLFIAKAcv:matrix.org");
const vm = new RoomViewModel({
room,
ownUserId: session.userId,
platform,
urlCreator: urlRouter,
navigation,
async function main() {
const app = document.querySelector<HTMLDivElement>('#app')!
const platform = new Platform(app, assetPaths, { development: import.meta.env.DEV });
const navigation = createNavigation();
platform.setNavigation(navigation);
const urlRouter = createRouter({
navigation: navigation,
history: platform.history
});
await vm.load();
const view = new TimelineView(vm.timelineViewModel);
app.appendChild(view.mount());
urlRouter.attach();
const client = new Client(platform);
const loginOptions = await client.queryLogin("matrix.org").result;
client.startWithLogin(loginOptions.password("username", "password"));
await client.loadStatus.waitFor((status: string) => {
return status === LoadStatus.Ready ||
status === LoadStatus.Error ||
status === LoadStatus.LoginFailed;
}).promise;
if (client.loginFailure) {
alert("login failed: " + client.loginFailure);
} else if (client.loadError) {
alert("load failed: " + client.loadError.message);
} else {
const {session} = client;
// looks for room corresponding to #element-dev:matrix.org, assuming it is already joined
const room = session.rooms.get("!bEWtlqtDwCLFIAKAcv:matrix.org");
const vm = new RoomViewModel({
room,
ownUserId: session.userId,
platform,
urlCreator: urlRouter,
navigation,
});
await vm.load();
const view = new TimelineView(vm.timelineViewModel);
app.appendChild(view.mount());
}
}
main();
```
## Typescript support
There is partial typescript support while we are still in the process of converting the Hydrogen codebase to typesccript.
## API Stability
This library follows semantic versioning; there is no API stability promised as long as the major version is still 0. Once 1.0.0 is released, breaking changes will be released with a change in major versioning.

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@ -5,6 +5,7 @@ yarn tsc -p tsconfig-declaration.json
./scripts/sdk/create-manifest.js ./target/package.json
mkdir target/paths
./scripts/sdk/transform-paths.js ./src/platform/web/sdk/paths/vite.js ./target/paths/vite.js
cp doc/SDK.md target/README.md
pushd target
pushd asset-build/assets
mv main.*.js ../../main.js