1 files changed, 55 insertions, 0 deletions
diff --git a/packages/website/ts/utils/doc_utils.ts b/packages/website/ts/utils/doc_utils.ts
new file mode 100644
index 000000000..ca6e0dc52
--- /dev/null
+++ b/packages/website/ts/utils/doc_utils.ts
@@ -0,0 +1,55 @@
+import * as _ from 'lodash';
+import findVersions = require('find-versions');
+import convert = require('xml-js');
+import {constants} from 'ts/utils/constants';
+import {utils} from 'ts/utils/utils';
+import {VersionToFileName, S3FileObject, TypeDocNode, DoxityDocObj} from 'ts/types';
+
+export const docUtils = {
+    async getVersionToFileNameAsync(s3DocJsonRoot: string):
+        Promise<VersionToFileName> {
+        const versionFileNames = await this.getVersionFileNamesAsync(s3DocJsonRoot);
+        const versionToFileName: VersionToFileName = {};
+        _.each(versionFileNames, fileName => {
+            const [version] = findVersions(fileName);
+            versionToFileName[version] = fileName;
+        });
+        return versionToFileName;
+    },
+    async getVersionFileNamesAsync(s3DocJsonRoot: string): Promise<string[]> {
+        const response = await fetch(s3DocJsonRoot);
+        if (response.status !== 200) {
+            // TODO: Show the user an error message when the docs fail to load
+            const errMsg = await response.text();
+            utils.consoleLog(`Failed to load JSON file list: ${response.status} ${errMsg}`);
+            return;
+        }
+        const responseXML = await response.text();
+        const responseJSONString = convert.xml2json(responseXML, {
+            compact: true,
+        });
+        const responseObj = JSON.parse(responseJSONString);
+        let fileObjs: S3FileObject[];
+        if (_.isArray(responseObj.ListBucketResult.Contents)) {
+            fileObjs = responseObj.ListBucketResult.Contents as S3FileObject[];
+        } else {
+            fileObjs = [responseObj.ListBucketResult.Contents];
+        }
+        const versionFileNames = _.map(fileObjs, fileObj => {
+            return fileObj.Key._text;
+        });
+        return versionFileNames;
+    },
+    async getJSONDocFileAsync(fileName: string, s3DocJsonRoot: string): Promise<TypeDocNode|DoxityDocObj> {
+        const endpoint = `${s3DocJsonRoot}/${fileName}`;
+        const response = await fetch(endpoint);
+        if (response.status !== 200) {
+            // TODO: Show the user an error message when the docs fail to load
+            const errMsg = await response.text();
+            utils.consoleLog(`Failed to load Doc JSON: ${response.status} ${errMsg}`);
+            return;
+        }
+        const jsonDocObj = await response.json();
+        return jsonDocObj;
+    },
+};