From 9e9b84604f238cdcf1b5b97d7ccaf6763bb9b5ff Mon Sep 17 00:00:00 2001
From: Tsu-ba-me <ynho.li.aa.e@gmail.com>
Date: Fri, 17 Mar 2023 19:34:47 -0400
Subject: [PATCH] fix(striker-ui-api): add /manifest/template

---
 .../manifest/getManifestTemplate.ts           | 107 ++++++++++++++++++
 .../lib/request_handlers/manifest/index.ts    |   1 +
 striker-ui-api/src/routes/manifest.ts         |   7 +-
 3 files changed, 113 insertions(+), 2 deletions(-)
 create mode 100644 striker-ui-api/src/lib/request_handlers/manifest/getManifestTemplate.ts

diff --git a/striker-ui-api/src/lib/request_handlers/manifest/getManifestTemplate.ts b/striker-ui-api/src/lib/request_handlers/manifest/getManifestTemplate.ts
new file mode 100644
index 00000000..ad94ba63
--- /dev/null
+++ b/striker-ui-api/src/lib/request_handlers/manifest/getManifestTemplate.ts
@@ -0,0 +1,107 @@
+import { RequestHandler } from 'express';
+
+import { dbQuery, getLocalHostName } from '../../accessModule';
+import {
+  getHostNameDomain,
+  getHostNamePrefix,
+  getShortHostName,
+} from '../../disassembleHostName';
+import { stderr } from '../../shell';
+
+export const getManifestTemplate: RequestHandler = (request, response) => {
+  let localHostName = '';
+
+  try {
+    localHostName = getLocalHostName();
+  } catch (subError) {
+    stderr(String(subError));
+
+    response.status(500).send();
+
+    return;
+  }
+
+  const localDomain = getHostNameDomain(localHostName);
+  const localShort = getShortHostName(localHostName);
+  const localPrefix = getHostNamePrefix(localShort);
+
+  let rawQueryResult: Array<
+    [fenceUUID: string, fenceName: string, upsUUID: string, upsName: string]
+  >;
+
+  try {
+    ({ stdout: rawQueryResult } = dbQuery(
+      `SELECT
+          fence_uuid,
+          fence_name,
+          ups_uuid,
+          ups_name
+        FROM (
+          SELECT
+            ROW_NUMBER() OVER (ORDER BY fence_name),
+            fence_uuid,
+            fence_name
+          FROM fences
+          ORDER BY fence_name
+        ) AS a
+        FULL JOIN (
+          SELECT
+            ROW_NUMBER() OVER (ORDER BY ups_name),
+            ups_uuid,
+            ups_name
+          FROM upses
+          ORDER BY ups_name
+        ) AS b ON a.row_number = b.row_number;`,
+    ));
+  } catch (queryError) {
+    stderr(`Failed to execute query; CAUSE: ${queryError}`);
+
+    response.status(500).send();
+
+    return;
+  }
+
+  const queryResult = rawQueryResult.reduce<{
+    fences: {
+      [fenceUUID: string]: {
+        fenceName: string;
+        fenceUUID: string;
+      };
+    };
+    upses: {
+      [upsUUID: string]: {
+        upsName: string;
+        upsUUID: string;
+      };
+    };
+  }>(
+    (previous, [fenceUUID, fenceName, upsUUID, upsName]) => {
+      const { fences, upses } = previous;
+
+      if (fenceUUID) {
+        fences[fenceUUID] = {
+          fenceName,
+          fenceUUID,
+        };
+      }
+
+      if (upsUUID) {
+        upses[upsUUID] = {
+          upsName,
+          upsUUID,
+        };
+      }
+
+      return previous;
+    },
+    { fences: {}, upses: {} },
+  );
+
+  response.status(200).send({
+    localHostName,
+    localShort,
+    localPrefix,
+    localDomain,
+    ...queryResult,
+  });
+};
diff --git a/striker-ui-api/src/lib/request_handlers/manifest/index.ts b/striker-ui-api/src/lib/request_handlers/manifest/index.ts
index 79e54734..bf41d98e 100644
--- a/striker-ui-api/src/lib/request_handlers/manifest/index.ts
+++ b/striker-ui-api/src/lib/request_handlers/manifest/index.ts
@@ -1 +1,2 @@
 export * from './getManifest';
+export * from './getManifestTemplate';
diff --git a/striker-ui-api/src/routes/manifest.ts b/striker-ui-api/src/routes/manifest.ts
index 2502a183..6b3e5e5c 100644
--- a/striker-ui-api/src/routes/manifest.ts
+++ b/striker-ui-api/src/routes/manifest.ts
@@ -1,9 +1,12 @@
 import express from 'express';
 
-import { getManifest } from '../lib/request_handlers/manifest';
+import {
+  getManifest,
+  getManifestTemplate,
+} from '../lib/request_handlers/manifest';
 
 const router = express.Router();
 
-router.get('/', getManifest);
+router.get('/', getManifest).get('/template', getManifestTemplate);
 
 export default router;