Add ZoomInfo integration (#647)

* init. works

* remove heap refs

* update assets

integrations/zoominfo/gitbook-manifest.yaml

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+name: zoominfo
+title: ZoomInfo
+icon: ./assets/icon.png
+previewImages:
+    - ./assets/preview.png
+description: Plug your GitBook site to your ZoomInfo instance.
+externalLinks:
+    - label: Documentation
+      url: https://www.gitbook.com/integrations/zoominfo
+visibility: private
+script: ./src/index.ts
+# The following scope(s) are available only to GitBook Staff
+# See https://developer.gitbook.com/integrations/configurations#scopes
+scopes:
+    - site:script:inject
+organization: gitbook
+contentSecurityPolicy:
+    script-src: https://js.zi-scripts.com 'unsafe-inline';
+summary: |
+    # Overview
+    This integration allows to add the ZoomInfo Analytics tracker on your published GitBook site.
+
+    # How it works
+    The integration injects the ZoomInfo script on your page, using the script you provide during configuration, 
+    so that you can get analytics information from your GitBook site directly inside of ZoomInfo.
+
+    # Configure
+    Install the integration on the GitBook site of your choice.
+    Locate the ZoomInfo script you want to use, which is available in WebSights management:
+     * copy the script and paste it in the GitBook integration's configuration screen
+
+categories:
+    - analytics
+configurations:
+    site:
+        properties:
+            script:
+                type: string
+                title: Script
+                description: Available in your ZoomInfo account
+        required:
+            - script
+target: site

integrations/zoominfo/package.json

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+{
+    "name": "@gitbook/integration-zoominfo",
+    "version": "0.0.1",
+    "private": true,
+    "dependencies": {
+        "@gitbook/api": "*",
+        "@gitbook/runtime": "*"
+    },
+    "devDependencies": {
+        "@gitbook/cli": "workspace:*",
+        "@gitbook/tsconfig": "workspace:*"
+    },
+    "scripts": {
+        "typecheck": "tsc --noEmit",
+        "publish-integrations-staging": "gitbook publish .",
+        "check": "gitbook check",
+        "publish-integrations": "gitbook publish ."
+    }
+}

integrations/zoominfo/src/index.ts

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+import {
+    createIntegration,
+    FetchPublishScriptEventCallback,
+    RuntimeContext,
+    RuntimeEnvironment,
+} from '@gitbook/runtime';
+
+import rawScript from './script.raw.js';
+
+type ZoomInfoRuntimeContext = RuntimeContext<
+    RuntimeEnvironment<
+        {},
+        {
+            script?: string;
+        }
+    >
+>;
+
+export const handleFetchEvent: FetchPublishScriptEventCallback = async (
+    event,
+    { environment }: ZoomInfoRuntimeContext,
+) => {
+    const script = environment.siteInstallation?.configuration?.script;
+    if (!script) {
+        throw new Error(
+            `The ZoomInfo script is missing from the configuration (ID: ${
+                'spaceId' in event ? event.spaceId : event.siteId
+            }).`,
+        );
+    }
+    // matches occurances of alphanumeric strings inside single quotes
+    // of length of exactly 20, which is what we need
+    const regex = /'[a-f0-9]{20}'/;
+
+    const match = script.match(regex);
+    if (!match) {
+        throw new Error(`Match for ZoomInfo's site id could not be found`);
+    }
+
+    // match[0] looks like "'abc...'" we need to remove the single quotes
+    const siteId = match[0].replace(/\'/g, '');
+
+    return new Response((rawScript as string).replace('<TO_REPLACE>', siteId), {
+        headers: {
+            'Content-Type': 'application/javascript',
+            'Cache-Control': 'max-age=604800',
+        },
+    });
+};
+
+export default createIntegration<ZoomInfoRuntimeContext>({
+    fetch_published_script: handleFetchEvent,
+});

integrations/zoominfo/src/script.raw.js

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+const siteId = '<TO_REPLACE>';
+
+(function (w, d, s) {
+    w['ZIProjectKey'] = siteId;
+    var n;
+    n = d.createElement('script');
+    n.src = s;
+    n.async = !0;
+    d.head.appendChild(n);
+})(window, document, 'https://js.zi-scripts.com/zi-tag.js');

integrations/zoominfo/tsconfig.json

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+{
+    "extends": "@gitbook/tsconfig/integration.json"
+}