initial commitHEADprimary

7 files changed, 983 insertions, 0 deletions

diff --git a/src/common.ts b/src/common.ts
new file mode 100755
index 0000000..328e1bd
--- /dev/null
+++ b/src/common.ts
@@ -0,0 +1,47 @@
+
+
+
+/// import
+
+import { graphql } from "npm:graphql@16.6.0";
+import type { ExecutionResult } from "npm:graphql@16.6.0";
+
+/// util
+
+import type { GQLOptions, GQLRequest, GraphQLParams } from "./utility/types.ts";
+
+
+
+/// export
+
+export async function runHttpQuery<
+  Req extends GQLRequest = GQLRequest,
+  Context = { request?: Req }>(
+    params: GraphQLParams,
+    options: GQLOptions<Context, Req>,
+    context?: Context | any): Promise<ExecutionResult> {
+  /**
+   * Execute a GraphQL query
+   * @param {GraphQLParams} params
+   * @param {GQLOptions} options
+   * @param context GraphQL context to use inside resolvers
+   *
+   * @example
+   * ```ts
+   * const { errors, data } = await runHttpQuery<ServerRequest, typeof context>({ query: `{ hello }` }, { schema }}, context)
+   * ```
+   */
+
+  const contextValue = options.context && context?.request ?
+    await options.context?.(context?.request) :
+    context;
+  const source = params.query! || params.mutation!;
+
+  return await graphql({
+    source,
+    ...options,
+    contextValue,
+    operationName: params.operationName,
+    variableValues: params.variables
+  });
+}
diff --git a/src/gql.ts b/src/gql.ts
new file mode 100644
index 0000000..6ccf9cd
--- /dev/null
+++ b/src/gql.ts
@@ -0,0 +1,188 @@
+
+
+
+/// import
+
+import { parse } from "npm:graphql@16.6.0";
+import type { DefinitionNode, DocumentNode, Location } from "npm:graphql@16.6.0";
+
+/// util
+
+const docCache = new Map<string, DocumentNode>();         // a map docString -> graphql document
+const fragmentSourceMap = new Map<string, Set<string>>(); // a map fragmentName -> [normalized source]
+
+let allowLegacyFragmentVariables = false;
+let printFragmentWarnings = true;
+
+
+
+/// export
+
+export function disableExperimentalFragmentVariables() {
+  allowLegacyFragmentVariables = false;
+}
+
+export function disableFragmentWarnings() {
+  printFragmentWarnings = false;
+}
+
+export function enableExperimentalFragmentVariables() {
+  allowLegacyFragmentVariables = true;
+}
+
+export function gql(literals: string | readonly string[], ...args: any[]) {
+  /**
+   * Create a GraphQL AST from template literal
+   * @param literals
+   * @param args
+   *
+   * @example
+   * ```ts
+   * import { buildASTSchema, graphql } from "https://deno.land/x/graphql_deno@v15.0.0/mod.ts"
+   * import { gql } from "https://deno.land/x/graphql_tag/mod.ts"
+   *
+   * const typeDefs = gql`
+   *  type Query {
+   *    hello: String
+   *  }
+   * `
+   *
+   * const query = `{ hello }`
+   *
+   * const resolvers = { hello: () => "world" }
+   *
+   * console.log(await graphql(buildASTSchema(typeDefs), query, resolvers))
+   * ```
+   */
+
+  if (typeof literals === "string")
+    literals = [literals];
+
+  let result = literals[0];
+
+  args.forEach((arg, i) => {
+    if (arg && arg.kind === "Document")
+      result += arg.loc.source.body;
+    else
+      result += arg;
+
+    result += literals[i + 1];
+  });
+
+  return parseDocument(result);
+}
+
+export function resetCaches() {
+  docCache.clear();
+  fragmentSourceMap.clear();
+}
+
+
+
+/// helper
+
+function normalize(string: string) {
+  // Strip insignificant whitespace
+  // Note that this could do a lot more, such as reorder fields etc.
+  return string.replace(/[\s,]+/g, " ").trim();
+}
+
+function cacheKeyFromLoc(loc: Location) {
+  return normalize(loc.source.body.substring(loc.start, loc.end));
+}
+
+function processFragments(ast: DocumentNode) {
+  // Take a unstripped parsed document (query/mutation or even fragment), and
+  // check all fragment definitions, checking for name->source uniqueness.
+  // We also want to make sure only unique fragments exist in the document.
+
+  const definitions: DefinitionNode[] = [];
+  const seenKeys = new Set<string>();
+
+  ast.definitions.forEach((fragmentDefinition) => {
+    if (fragmentDefinition.kind === "FragmentDefinition") {
+      const fragmentName = fragmentDefinition.name.value;
+      const sourceKey = cacheKeyFromLoc(fragmentDefinition.loc!);
+
+      // We know something about this fragment
+      let sourceKeySet = fragmentSourceMap.get(fragmentName)!;
+
+      if (sourceKeySet && !sourceKeySet.has(sourceKey)) {
+        // this is a problem because the app developer is trying to register another fragment with
+        // the same name as one previously registered. So, we tell them about it.
+        if (printFragmentWarnings) {
+          console.warn(
+            `Warning: fragment with name ${fragmentName} already exists.\n` +
+            "gql enforces all fragment names across your application to be unique; read more about\n" +
+            "this in the docs: http://dev.apollodata.com/core/fragments.html#unique-names"
+          );
+        }
+      } else if (!sourceKeySet) {
+        fragmentSourceMap.set(fragmentName, (sourceKeySet = new Set()));
+      }
+
+      sourceKeySet.add(sourceKey);
+
+      if (!seenKeys.has(sourceKey)) {
+        seenKeys.add(sourceKey);
+        definitions.push(fragmentDefinition);
+      }
+    } else {
+      definitions.push(fragmentDefinition);
+    }
+  })
+
+  return {
+    ...ast,
+    definitions
+  };
+}
+
+function stripLoc(doc: DocumentNode) {
+  const workSet = new Set<Record<string, any>>(doc.definitions);
+
+  workSet.forEach((node) => {
+    if (node.loc)
+      delete node.loc;
+
+    Object.keys(node).forEach((key) => {
+      const value = node[key];
+
+      if (value && typeof value === "object")
+        workSet.add(value);
+    });
+  });
+
+  const loc = doc.loc as { endToken: unknown; startToken: unknown; };
+
+  if (loc) {
+    delete loc.startToken;
+    delete loc.endToken;
+  }
+
+  return doc;
+}
+
+function parseDocument(source: string) {
+  const cacheKey = normalize(source);
+
+  if (!docCache.has(cacheKey)) {
+    const parsed = parse(source, { allowLegacyFragmentVariables });
+
+    if (!parsed || parsed.kind !== "Document")
+      throw new Error("Not a valid GraphQL document.");
+
+    docCache.set(
+      cacheKey,
+      // check that all "new" fragments inside the documents are consistent with
+      // existing fragments of the same name
+      stripLoc(processFragments(parsed))
+    );
+  }
+
+  return docCache.get(cacheKey)!;
+}
+
+
+
+/// via https://github.com/deno-libs/graphql_tag
diff --git a/src/graphiql/markup.ts b/src/graphiql/markup.ts
new file mode 100755
index 0000000..c000f92
--- /dev/null
+++ b/src/graphiql/markup.ts
@@ -0,0 +1,309 @@
+
+
+
+/// export
+
+export const getLoadingMarkup = () => ({
+  container: `
+    <style>
+      @keyframes fadeIn {
+        from {
+          opacity: 0;
+          transform: translateY(-10px);
+        }
+
+        to {
+          opacity: 1;
+          transform: translateY(0);
+        }
+      }
+
+      @keyframes fadeOut {
+        from {
+          opacity: 1;
+          transform: translateY(0);
+        }
+
+        to {
+          opacity: 0;
+          transform: translateY(-10px);
+        }
+      }
+
+      .fadeOut {
+        animation: fadeOut 0.5s ease-out forwards;
+      }
+
+      #loading-wrapper {
+        width: 100vw; height: 100vh;
+
+        align-items: center;
+        display: flex;
+        flex-direction: column;
+        justify-content: center;
+        position: absolute;
+      }
+
+      .logo {
+        width: 75px; height: 75px;
+
+        animation: fadeIn 0.5s ease-out forwards;
+        margin-bottom: 20px;
+        opacity: 0;
+      }
+
+      .text {
+        animation: fadeIn 0.5s ease-out forwards;
+        color: rgba(255, 255, 255, 0.6);
+        font-size: 32px;
+        font-weight: 200;
+        opacity: 0;
+        text-align: center;
+      }
+
+      .text-inner {
+        font-weight: 400;
+      }
+    </style>
+
+    <div id="loading-wrapper">
+      <svg class="logo" viewBox="0 0 128 128" xmlns="http://www.w3.org/2000/svg">
+        <title>GraphQL Playground Logo</title>
+
+        <style>
+          @keyframes appearIn {
+            from {
+              opacity: 0;
+              transform: translateY(0px);
+            }
+
+            to {
+              opacity: 1;
+              transform: translateY(0);
+            }
+          }
+
+          @keyframes scaleIn {
+            from {
+              transform: scale(0);
+            }
+
+            to {
+              transform: scale(1);
+            }
+          }
+
+          @keyframes innerDrawIn {
+            0% {
+              stroke-dashoffset: 70;
+            }
+
+            50% {
+              stroke-dashoffset: 140;
+            }
+
+            100% {
+              stroke-dashoffset: 210;
+            }
+          }
+
+          @keyframes outerDrawIn {
+            0% {
+              stroke-dashoffset: 76;
+            }
+
+            100% {
+              stroke-dashoffset: 152;
+            }
+          }
+
+          .circle-top,
+          .circle-top-right,
+          .circle-bottom-right,
+          .circle-bottom,
+          .circle-bottom-left,
+          .circle-top-left {
+            fill: white;
+          }
+
+          .circle-top {
+            animation: scaleIn 0.25s linear forwards 0.2222222222222222s;
+            transform: scale(0);
+            transform-origin: 64px 28px;
+          }
+
+          .circle-top-right {
+            animation: scaleIn 0.25s linear forwards 0.4222222222222222s;
+            transform: scale(0);
+            transform-origin: 95.98500061035156px 46.510000228881836px;
+          }
+
+          .circle-bottom-right {
+            animation: scaleIn 0.25s linear forwards 0.6222222222222222s;
+            transform: scale(0);
+            transform-origin: 95.97162628173828px 83.4900016784668px;
+          }
+
+          .circle-bottom {
+            animation: scaleIn 0.25s linear forwards 0.8222222222222223s;
+            transform: scale(0);
+            transform-origin: 64px 101.97999572753906px;
+          }
+
+          .circle-bottom-left {
+            animation: scaleIn 0.25s linear forwards 1.0222222222222221s;
+            transform: scale(0);
+            transform-origin: 32.03982162475586px 83.4900016784668px;
+          }
+
+          .circle-top-left {
+            animation: scaleIn 0.25s linear forwards 1.2222222222222223s;
+            transform: scale(0);
+            transform-origin: 32.033552169799805px 46.510000228881836px;
+          }
+
+          .octoline-top-right,
+          .octoline-right,
+          .octoline-bottom-right,
+          .octoline-bottom-left,
+          .octoline-left,
+          .octoline-top-left {
+            stroke: white;
+            stroke-linecap: round;
+            stroke-linejoin: round;
+            stroke-width: 4;
+          }
+
+          .octoline-top-right {
+            animation: outerDrawIn 0.5s ease-out forwards 0.3333333333333333s, appearIn 0.1s ease-out forwards 0.3333333333333333s;
+            animation-iteration-count: 1, 1;
+            opacity: 0;
+            stroke-dasharray: 76;
+          }
+
+          .octoline-right {
+            animation: outerDrawIn 0.5s ease-out forwards 0.5333333333333333s, appearIn 0.1s ease-out forwards 0.5333333333333333s;
+            animation-iteration-count: 1, 1;
+            opacity: 0;
+            stroke-dasharray: 76;
+          }
+
+          .octoline-bottom-right {
+            animation: outerDrawIn 0.5s ease-out forwards 0.7333333333333334s, appearIn 0.1s ease-out forwards 0.7333333333333334s;
+            animation-iteration-count: 1, 1;
+            opacity: 0;
+            stroke-dasharray: 76;
+          }
+
+          .octoline-bottom-left {
+            animation: outerDrawIn 0.5s ease-out forwards 0.9333333333333333s, appearIn 0.1s ease-out forwards 0.9333333333333333s;
+            animation-iteration-count: 1, 1;
+            opacity: 0;
+            stroke-dasharray: 76;
+          }
+
+          .octoline-left {
+            animation: outerDrawIn 0.5s ease-out forwards 1.1333333333333333s, appearIn 0.1s ease-out forwards 1.1333333333333333s;
+            animation-iteration-count: 1, 1;
+            opacity: 0;
+            stroke-dasharray: 76;
+          }
+
+          .octoline-top-left {
+            animation: outerDrawIn 0.5s ease-out forwards 1.3333333333333333s, appearIn 0.1s ease-out forwards 1.3333333333333333s;
+            animation-iteration-count: 1, 1;
+            opacity: 0;
+            stroke-dasharray: 76;
+          }
+
+          .triangle-bottom,
+          .triangle-left,
+          .triangle-right {
+            stroke: white;
+            stroke-linecap: round;
+            stroke-width: 4;
+          }
+
+          .triangle-bottom {
+            animation: innerDrawIn 1s ease-in-out forwards 1.3666666666666667s, appearIn 0.1s linear forwards 1.3666666666666667s;
+            animation-iteration-count: infinite, 1;
+            opacity: 0;
+            stroke-dasharray: 70;
+          }
+
+          .triangle-left {
+            animation: innerDrawIn 1s ease-in-out forwards 1.5333333333333332s, appearIn 0.1s linear forwards 1.5333333333333332s;
+            animation-iteration-count: infinite, 1;
+            opacity: 0;
+            stroke-dasharray: 70;
+          }
+
+          .triangle-right {
+            animation: innerDrawIn 1s ease-in-out forwards 1.7000000000000002s, appearIn 0.1s linear forwards 1.7000000000000002s;
+            animation-iteration-count: infinite, 1;
+            opacity: 0;
+            stroke-dasharray: 70;
+          }
+        </style>
+
+        <defs>
+          <linearGradient id="linearGradient" x1="4.86%" x2="96.21%" y1="0%" y2="99.66%">
+            <stop stop-color="#e00082" stop-opacity="0.8" offset="0%"></stop>
+            <stop stop-color="#e00082" offset="100%"></stop>
+          </linearGradient>
+        </defs>
+
+        <g>
+          <rect id="gradient" width="127.96" height="127.96" y="1" fill="url(#linearGradient)" rx="4"></rect>
+          <path id="border" fill="#e00082" fill-rule="nonzero" d="M4.7 2.84c-1.58 0-2.86 1.28-2.86 2.85v116.57c0 1.57 1.28 2.84 2.85 2.84h116.57c1.57 0 2.84-1.26 2.84-2.83V5.67c0-1.55-1.26-2.83-2.83-2.83H4.67zM4.7 0h116.58c3.14 0 5.68 2.55 5.68 5.7v116.58c0 3.14-2.54 5.68-5.68 5.68H4.68c-3.13 0-5.68-2.54-5.68-5.68V5.68C-1 2.56 1.55 0 4.7 0z"></path>
+
+          <path
+            class="circle-top" x="64" y="28"
+            d="M64 36c-4.42 0-8-3.58-8-8s3.58-8 8-8 8 3.58 8 8-3.58 8-8 8"
+            style="transform: translate(100px, 100px);"></path>
+          <path
+            class="circle-top-right" x="95.98500061035156" y="46.510000228881836"
+            d="M89.04 50.52c-2.2-3.84-.9-8.73 2.94-10.96 3.83-2.2 8.72-.9 10.95 2.94 2.2 3.84.9 8.73-2.94 10.96-3.85 2.2-8.76.9-10.97-2.94"
+            style="transform: translate(100px, 100px);"></path>
+          <path
+            class="circle-bottom-right" x="95.97162628173828" y="83.4900016784668"
+            d="M102.9 87.5c-2.2 3.84-7.1 5.15-10.94 2.94-3.84-2.2-5.14-7.12-2.94-10.96 2.2-3.84 7.12-5.15 10.95-2.94 3.86 2.23 5.16 7.12 2.94 10.96"
+            style="transform: translate(100px, 100px);"></path>
+          <path
+            class="circle-bottom" x="64" y="101.97999572753906"
+            d="M64 110c-4.43 0-8-3.6-8-8.02 0-4.44 3.57-8.02 8-8.02s8 3.58 8 8.02c0 4.4-3.57 8.02-8 8.02"
+            style="transform: translate(100px, 100px);"></path>
+          <path
+            class="circle-bottom-left" x="32.03982162475586" y="83.4900016784668"
+            d="M25.1 87.5c-2.2-3.84-.9-8.73 2.93-10.96 3.83-2.2 8.72-.9 10.95 2.94 2.2 3.84.9 8.73-2.94 10.96-3.85 2.2-8.74.9-10.95-2.94"
+            style="transform: translate(100px, 100px);"></path>
+          <path
+            class="circle-top-left" x="32.033552169799805" y="46.510000228881836"
+            d="M38.96 50.52c-2.2 3.84-7.12 5.15-10.95 2.94-3.82-2.2-5.12-7.12-2.92-10.96 2.2-3.84 7.12-5.15 10.95-2.94 3.83 2.23 5.14 7.12 2.94 10.96"
+            style="transform: translate(100px, 100px);"></path>
+
+          <path class="octoline-top-right" d="M63.55 27.5l32.9 19-32.9-19z"></path>
+          <path class="octoline-right" d="M96 46v38-38z"></path>
+          <path class="octoline-bottom-right" d="M96.45 84.5l-32.9 19 32.9-19z"></path>
+          <path class="octoline-bottom-left" d="M64.45 103.5l-32.9-19 32.9 19z"></path>
+          <path class="octoline-left" d="M32 84V46v38z"></path>
+          <path class="octoline-top-left" d="M31.55 46.5l32.9-19-32.9 19z"></path>
+
+          <path class="triangle-bottom" d="M30 84h70"></path>
+          <path class="triangle-left" d="M65 26L30 87"></path>
+          <path class="triangle-right" d="M98 87L63 26"></path>
+        </g>
+      </svg>
+
+      <div class="text">Loading
+        <span class="text-inner">GraphQL Playground</span>
+      </div>
+    </div>
+  `,
+  script: `
+    const loadingWrapper = document.getElementById("loading-wrapper");
+
+    if (loadingWrapper)
+      loadingWrapper.classList.add("fadeOut");
+  `
+});
diff --git a/src/graphiql/render.ts b/src/graphiql/render.ts
new file mode 100755
index 0000000..b4af05b
--- /dev/null
+++ b/src/graphiql/render.ts
@@ -0,0 +1,214 @@
+
+
+
+/// import
+
+import { filterXSS } from "npm:xss@1.0.14";
+
+/// util
+
+import { getLoadingMarkup } from "./markup.ts";
+
+const CONFIG_ID = "playground-config";
+const loading = getLoadingMarkup();
+
+const filter = (val: string) => {
+  return filterXSS(val, {
+    stripIgnoreTag: true,
+    stripIgnoreTagBody: ["script"],
+    whiteList: {}
+  });
+}
+
+const getCdnMarkup = ({ cdnUrl = "//cdn.jsdelivr.net/npm", faviconUrl, version }: {
+  cdnUrl?: string
+  faviconUrl?: string | null
+  version?: string
+}) => {
+  const buildCDNUrl = (packageName: string, suffix: string) =>
+    filter(`${cdnUrl}/${packageName}${version ? `@${version}` : ""}/${suffix}` || "");
+
+  return `
+    <link rel="stylesheet" href="${buildCDNUrl("graphql-playground-react", "build/static/css/index.css")}"/>
+    ${typeof faviconUrl === "string" ? `<link rel="shortcut icon" href="${filter(faviconUrl || "")}" />` : ""}
+    ${faviconUrl === undefined ? `<link rel="shortcut icon" href="${buildCDNUrl("graphql-playground-react", "build/favicon.png")}" />` : ""}
+    <script src="${buildCDNUrl("graphql-playground-react", "build/static/js/middleware.js")}"></script>
+  `;
+}
+
+const renderConfig = (config: unknown) => {
+  return filterXSS(`<div id="${CONFIG_ID}">${JSON.stringify(config)}</div>`, {
+    whiteList: { div: ["id"] }
+  });
+};
+
+
+
+/// export
+
+export interface MiddlewareOptions {
+  codeTheme?: EditorColours;
+  config?: any;
+  endpoint?: string;
+  env?: any;
+  schema?: IntrospectionResult;
+  settings?: ISettings;
+  subscriptionEndpoint?: string;
+  tabs?: Tab[];
+  workspaceName?: string;
+}
+
+export type CursorShape = "line" | "block" | "underline";
+export type Theme = "dark" | "light";
+
+export interface ISettings {
+  "editor.cursorShape": CursorShape;
+  "editor.fontFamily": string;
+  "editor.fontSize": number;
+  "editor.reuseHeaders": boolean;
+  "editor.theme": Theme;
+  "general.betaUpdates": boolean;
+  "request.credentials": string;
+  "request.globalHeaders": { [key: string]: string };
+  "schema.polling.enable": boolean;
+  "schema.polling.endpointFilter": string;
+  "schema.polling.interval": number;
+  "tracing.hideTracingResponse": boolean;
+  "tracing.tracingSupported": boolean;
+}
+
+export interface EditorColours {
+  atom: string;
+  attribute: string;
+  builtin: string;
+  comment: string;
+  cursorColor: string;
+  def: string;
+  editorBackground: string;
+  keyword: string;
+  leftDrawerBackground: string;
+  meta: string;
+  number: string;
+  property: string;
+  punctuation: string;
+  qualifier: string;
+  resultBackground: string;
+  rightDrawerBackground: string;
+  selection: string;
+  string: string;
+  string2: string;
+  variable: string;
+  ws: string;
+}
+
+export interface IntrospectionResult {
+  __schema: any;
+}
+
+export interface RenderPageOptions extends MiddlewareOptions {
+  cdnUrl?: string;
+  env?: any;
+  faviconUrl?: string | null;
+  title?: string;
+  version?: string;
+}
+
+export interface Tab {
+  endpoint: string;
+  headers?: { [key: string]: string };
+  name?: string;
+  query: string;
+  responses?: string[];
+  variables?: string;
+}
+
+export function renderPlaygroundPage(options: RenderPageOptions) {
+  const extendedOptions:
+    & Partial<{
+      canSaveConfig: boolean
+      configString: string
+    }>
+    & RenderPageOptions = {
+      ...options,
+      canSaveConfig: false
+    };
+
+  if (options.config)
+    extendedOptions.configString = JSON.stringify(options.config, null, 2);
+
+  if (!extendedOptions.endpoint && !extendedOptions.configString)
+    console.warn("WARNING: You did not provide an endpoint and do not have a .graphqlconfig. Make sure you have at least one of them.");
+  else if (extendedOptions.endpoint)
+    extendedOptions.endpoint = filter(extendedOptions.endpoint || "");
+
+  return `
+  <!DOCTYPE html>
+  <html lang="en">
+    <head>
+      <meta charset=utf-8/>
+      <meta name="viewport" content="user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, minimal-ui"/>
+      <link href="https://brick.a.ssl.fastly.net/Open+Sans:300,400,600,700/Source+Code+Pro:400,700" rel="stylesheet"/>
+      <title>${extendedOptions.title || "GraphQL Playground"}</title>
+      ${extendedOptions.env === "react" || extendedOptions.env === "electron" ? "" : getCdnMarkup(extendedOptions)}
+    </head>
+
+    <body>
+      <style>
+        html {
+          font-family: "Open Sans", sans-serif;
+          overflow: hidden;
+        }
+
+        body {
+          background-color: #172a3a;
+          margin: 0;
+        }
+
+        #${CONFIG_ID} {
+          display: none;
+        }
+
+        .playgroundIn {
+          animation: playgroundIn 0.5s ease-out forwards;
+        }
+
+        @keyframes playgroundIn {
+          from {
+            opacity: 0;
+            transform: translateY(10px);
+          }
+
+          to {
+            opacity: 1;
+            transform: translateY(0);
+          }
+        }
+      </style>
+
+      ${loading.container}
+      ${renderConfig(extendedOptions)}
+      <div id="root"/>
+
+      <script>
+        window.addEventListener("load", () => {
+          ${loading.script}
+
+          const root = document.getElementById("root");
+          root.classList.add("playgroundIn");
+          const configText = document.getElementById("${CONFIG_ID}").innerText;
+
+          if (configText && configText.length) {
+            try {
+              GraphQLPlayground.init(root, JSON.parse(configText));
+            } catch(_) {
+              console.error("could not find config");
+            }
+          } else {
+            GraphQLPlayground.init(root);
+          }
+        });
+      </script>
+    </body>
+  </html>
+  `;
+}
diff --git a/src/http.ts b/src/http.ts
new file mode 100755
index 0000000..c8bfa0f
--- /dev/null
+++ b/src/http.ts
@@ -0,0 +1,121 @@
+
+
+
+/// util
+
+import { runHttpQuery } from "./common.ts";
+
+import type { GQLOptions, GQLRequest, GraphQLParams } from "./utility/types.ts";
+
+
+
+/// export
+
+export function GraphQLHTTP<
+  Req extends GQLRequest = GQLRequest,
+  Ctx extends { request: Req } = { request: Req }>({
+    playgroundOptions = {},
+    headers = {},
+    ...options
+  }: GQLOptions<Ctx, Req>) {
+  /**
+   * Create a new GraphQL HTTP middleware with schema, context etc
+   * @param {GQLOptions} options
+   *
+   * @example
+   * ```ts
+   * const graphql = await GraphQLHTTP({ schema })
+   *
+   * for await (const req of s) graphql(req)
+   * ```
+   */
+
+  return async (request: Req) => {
+    const accept = request.headers.get("Accept") || "";
+
+    const typeList = ["application/json", "text/html", "text/plain", "*/*"]
+      .map(contentType => ({
+        contentType,
+        index: accept.indexOf(contentType)
+      }))
+      .filter(({ index }) => index >= 0)
+      .sort((a, b) => a.index - b.index)
+      .map(({ contentType }) => contentType);
+
+    if (accept && !typeList.length) {
+      return new Response("Not Acceptable", {
+        headers: new Headers(headers),
+        status: 406
+      });
+    } else if (!["GET", "PUT", "POST", "PATCH"].includes(request.method)) {
+      return new Response("Method Not Allowed", {
+        headers: new Headers(headers),
+        status: 405
+      });
+    }
+
+    let params: Promise<GraphQLParams>;
+
+    if (request.method === "GET") {
+      const urlQuery = request.url.substring(request.url.indexOf("?"));
+      const queryParams = new URLSearchParams(urlQuery);
+
+      if (options.graphiql && typeList[0] === "text/html" && !queryParams.has("raw")) {
+        const { renderPlaygroundPage } = await import("./graphiql/render.ts");
+
+        const playground = renderPlaygroundPage({
+          ...playgroundOptions,
+          endpoint: "/graphql"
+        });
+
+        return new Response(playground, {
+          headers: new Headers({
+            "Content-Type": "text/html",
+            ...headers
+          })
+        });
+      } else if (typeList.length === 1 && typeList[0] === "text/html") {
+        return new Response("Not Acceptable", {
+          headers: new Headers(headers),
+          status: 406
+        });
+      } else if (queryParams.has("query")) {
+        params = Promise.resolve({ query: queryParams.get("query") } as GraphQLParams);
+      } else {
+        params = Promise.reject(new Error("No query given!"));
+      }
+    } else if (typeList.length === 1 && typeList[0] === "text/html") {
+      return new Response("Not Acceptable", {
+        headers: new Headers(headers),
+        status: 406
+      });
+    } else {
+      params = request.json();
+    }
+
+    try {
+      const result = await runHttpQuery<Req, Ctx>(await params, options, { request });
+      let contentType = "text/plain";
+
+      if (!typeList.length || typeList.includes("application/json") || typeList.includes("*/*"))
+        contentType = "application/json";
+
+      return new Response(JSON.stringify(result, null, 2), {
+        headers: new Headers({
+          "Content-Type": contentType,
+          ...headers
+        }),
+        status: 200
+      });
+    } catch(e) {
+      console.error(e);
+
+      return new Response(
+        "Malformed Request " + (request.method === "GET" ? "Query" : "Body"), {
+          headers: new Headers(headers),
+          status: 400
+        }
+      );
+    }
+  }
+}
diff --git a/src/import.ts b/src/import.ts
new file mode 100644
index 0000000..ffc2c68
--- /dev/null
+++ b/src/import.ts
@@ -0,0 +1,56 @@
+
+
+
+/// import
+
+import { dirname, join } from "https://deno.land/std/path/mod.ts";
+import { gql } from "./gql.ts";
+
+import type { DocumentNode } from "npm:graphql@16.6.0";
+
+/// util
+
+const { cwd, readFileSync } = Deno;
+const importRegex = /^#\s(import)\s.*(.graphql")/gm;
+const fileRegex = /\w*(.graphql)/g;
+
+
+
+/// export
+
+export function importQL(path: string): DocumentNode | Record<string, unknown> {
+  try {
+    const decoder = new TextDecoder("utf-8");
+    const file = readFileSync(join(cwd(), String(path)));
+    const imports = decoder.decode(file).match(importRegex) || [];
+    let parsedFile = decoder.decode(file);
+
+    /// `import` statements in the supplied schema file
+    /// are parsed to dynamically bring in linked files
+
+    imports.map(imp => {
+      const matchedFilename: null | Array<string> = imp.match(fileRegex);
+
+      if (!matchedFilename || !matchedFilename.length || matchedFilename.length < 1)
+        return;
+
+      const filename = matchedFilename[0];
+      const importedFileDecoder = new TextDecoder("utf-8");
+      const importedFile = readFileSync(join(cwd(), dirname(String(path)), filename));
+      const decodedFile = importedFileDecoder.decode(importedFile);
+
+      parsedFile = parsedFile.replace(imp, decodedFile);
+    });
+
+    return gql`
+      ${parsedFile}
+    `;
+  } catch(parseError) {
+    console.error(new Error(`error parsing file [${String(path)}]`), parseError);
+    return {};
+  }
+}
+
+
+
+/// fork of https://github.com/crewdevio/importql
diff --git a/src/utility/types.ts b/src/utility/types.ts
new file mode 100755
index 0000000..c96910c
--- /dev/null
+++ b/src/utility/types.ts
@@ -0,0 +1,48 @@
+
+
+
+/// import
+
+import type { GraphQLArgs, GraphQLSchema } from "npm:graphql@16.6.0";
+
+/// util
+
+import type { RenderPageOptions } from "../graphiql/render.ts";
+
+interface MutationParams {
+  mutation: string;
+  operationName?: string;
+  query?: never;
+  variables?: Record<string, unknown>;
+}
+
+interface QueryParams {
+  mutation?: never;
+  operationName?: string;
+  query: string;
+  variables?: Record<string, unknown>;
+}
+
+
+
+/// export
+
+export interface GQLOptions<Context = any, Req extends GQLRequest = GQLRequest> extends Omit<GraphQLArgs, "source"> {
+  context?: (val: Req) => Context | Promise<Context>;
+  /// GraphQL playground
+  graphiql?: boolean;
+  /// Custom headers for responses
+  headers?: HeadersInit;
+  /// Custom options for GraphQL Playground
+  playgroundOptions?: Omit<RenderPageOptions, "endpoint">;
+  schema: GraphQLSchema;
+}
+
+export type GraphQLParams = QueryParams | MutationParams;
+
+export type GQLRequest = {
+  headers: Headers;
+  json: () => Promise<GraphQLParams>;
+  method: string;
+  url: string;
+};