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feat(graphql-server): add GraphiQL support (#670) 

* feat(graphql-server): add GraphiQL support

* test(graphql-server): add GraphiQL tests

* docs(graphql-server): add GraphiQL usage

* chore: add changeset
pull/671/head
3w36zj6 2024-07-29 21:44:54 +09:00 committed by GitHub
parent 59894e77c0
commit e3eafbc117
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4 changed files with 117 additions and 16 deletions
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5
.changeset/sixty-papayas-sin.md 100644
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@ -0,0 +1,5 @@
---
'@hono/graphql-server': minor
---
feat: add GraphiQL support

1
packages/graphql-server/README.md
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@ -42,6 +42,7 @@ app.use(
graphqlServer({
schema,
rootResolver,
graphiql: true, // if `true`, presents GraphiQL when the GraphQL endpoint is loaded in a browser.
})
)

105
packages/graphql-server/src/index.ts
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@ -33,7 +33,7 @@ type Options<E extends Env = any, P extends string = any, I extends Input = {}>
rootResolver?: RootResolver<E, P, I>
pretty?: boolean
validationRules?: ReadonlyArray<ValidationRule>
// graphiql?: boolean
graphiql?: boolean
}
// eslint-disable-next-line @typescript-eslint/no-explicit-any
@ -44,7 +44,7 @@ export const graphqlServer = <E extends Env = any, P extends string = any, I ext
const schema = options.schema
const pretty = options.pretty ?? false
const validationRules = options.validationRules ?? []
// const showGraphiQL = options.graphiql ?? false
const showGraphiQL = options.graphiql ?? false
return async (c: Context<E, P, I>) => {
// GraphQL HTTP only supports GET and POST methods.
@ -68,6 +68,9 @@ export const graphqlServer = <E extends Env = any, P extends string = any, I ext
const { query, variables, operationName } = params
if (query == null) {
if (showGraphiQL && c.req.method === 'GET') {
return respondWithGraphiQL(c)
}
return c.json(errorMessages(['Must provide query string.']), 400)
}
@ -107,13 +110,6 @@ export const graphqlServer = <E extends Env = any, P extends string = any, I ext
// Determine if this GET request will perform a non-query.
const operationAST = getOperationAST(documentAST, operationName)
if (operationAST && operationAST.operation !== 'query') {
/*
Now , does not support GraphiQL
if (showGraphiQL) {
//return respondWithGraphiQL(response, graphiqlOptions, params)
}
*/
// Otherwise, report a 405: Method Not Allowed error.
return c.json(
errorMessages([
@ -156,12 +152,6 @@ export const graphqlServer = <E extends Env = any, P extends string = any, I ext
}
}
/*
Now, does not support GraphiQL
if (showGraphiQL) {
}
*/
if (pretty) {
const payload = JSON.stringify(result, null, pretty ? 2 : 0)
return c.text(payload, 200, {
@ -242,4 +232,87 @@ export const errorMessages = (
}
}
// export const graphiQLResponse = () => {}
export const respondWithGraphiQL = (c: Context) => {
// https://github.com/graphql/graphiql/blob/85edb9e0505db8ff963c9ad4674bc8fa2e02a35a/examples/graphiql-cdn/index.html
return c.html(`<!--
* Copyright (c) 2021 GraphQL Contributors
* All rights reserved.
*
* This source code is licensed under the license found in the
* LICENSE file in the root directory of this source tree.
-->
<!doctype html>
<html lang="en">
<head>
<title>GraphiQL</title>
<style>
body {
height: 100%;
margin: 0;
width: 100%;
overflow: hidden;
}
#graphiql {
height: 100vh;
}
</style>
<!--
This GraphiQL example depends on Promise and fetch, which are available in
modern browsers, but can be "polyfilled" for older browsers.
GraphiQL itself depends on React DOM.
If you do not want to rely on a CDN, you can host these files locally or
include them directly in your favored resource bundler.
-->
<script
crossorigin
src="https://unpkg.com/react@18/umd/react.development.js"
></script>
<script
crossorigin
src="https://unpkg.com/react-dom@18/umd/react-dom.development.js"
></script>
<!--
These two files can be found in the npm module, however you may wish to
copy them directly into your environment, or perhaps include them in your
favored resource bundler.
-->
<script
src="https://unpkg.com/graphiql/graphiql.min.js"
type="application/javascript"
></script>
<link rel="stylesheet" href="https://unpkg.com/graphiql/graphiql.min.css" />
<!--
These are imports for the GraphIQL Explorer plugin.
-->
<script
src="https://unpkg.com/@graphiql/plugin-explorer/dist/index.umd.js"
crossorigin
></script>
<link
rel="stylesheet"
href="https://unpkg.com/@graphiql/plugin-explorer/dist/style.css"
/>
</head>
<body>
<div id="graphiql">Loading...</div>
<script>
const root = ReactDOM.createRoot(document.getElementById('graphiql'));
const fetcher = GraphiQL.createFetcher({
url: '${c.req.path}',
});
const explorerPlugin = GraphiQLPluginExplorer.explorerPlugin();
root.render(
React.createElement(GraphiQL, {
fetcher,
defaultEditorToolsVisibility: true,
plugins: [explorerPlugin],
}),
);
</script>
</body>
</html>
`)
}

22
packages/graphql-server/test/index.test.ts
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@ -174,6 +174,13 @@ describe('GraphQL Middleware - GET functionality', () => {
schema: TestSchema,
})
)
app.use(
'/graphql-with-graphiql',
graphqlServer({
schema: TestSchema,
graphiql: true,
})
)
it('Allows GET with variable values', async () => {
const query = {
@ -276,6 +283,21 @@ describe('GraphQL Middleware - GET functionality', () => {
},
})
})
it('Errors when query is not provided and GraphiQL is disabled', async () => {
const res = await app.request('http://localhost/graphql', {
method: 'GET',
})
expect(res.status).toBe(400)
})
it('Renders GraphiQL when query is not provided and GraphiQL is enabled', async () => {
const res = await app.request('http://localhost/graphql-with-graphiql', {
method: 'GET',
})
expect(res.status).toBe(200)
expect(await res.text()).toContain('<div id="graphiql">')
})
})
describe('GraphQL Middleware - POST functionality', () => {