From ac6ecf3299d91bebffad6c91404e9f33efa455d6 Mon Sep 17 00:00:00 2001
From: Khalim Conn-Kowlessar <kconnkowlessar@gmail.com>
Date: Thu, 27 Jul 2023 17:41:36 +0100
Subject: [PATCH] Adding functionality to recommendations page

---
 .../building-passport/RecommendationCard.tsx  |  6 ++
 src/app/db/schema/property.ts                 |  1 +
 src/app/db/schema/recommendations.ts          |  1 +
 .../building-passport/[propertyId]/layout.tsx |  1 +
 .../building-passport/[propertyId]/page.tsx   |  1 +
 .../[propertyId]/recommendations/page.tsx     | 91 ++++++++++++++++++-
 src/app/utils.ts                              | 22 +++++
 7 files changed, 122 insertions(+), 1 deletion(-)

diff --git a/src/app/components/building-passport/RecommendationCard.tsx b/src/app/components/building-passport/RecommendationCard.tsx
index f04b8973..fb06508b 100644
--- a/src/app/components/building-passport/RecommendationCard.tsx
+++ b/src/app/components/building-passport/RecommendationCard.tsx
@@ -199,6 +199,12 @@ export default function RecommendationCard({
               <td>{cardComponent.newUValue}</td>
             </tr>
           )}
+          {cardComponent.sapPoints && (
+            <tr>
+              <td className="font-medium">SAP Points:</td>
+              <td>{cardComponent.sapPoints}</td>
+            </tr>
+          )}
         </tbody>
       </table>
       <RecommendationModal
diff --git a/src/app/db/schema/property.ts b/src/app/db/schema/property.ts
index 833bc943..0e4afc57 100644
--- a/src/app/db/schema/property.ts
+++ b/src/app/db/schema/property.ts
@@ -14,6 +14,7 @@ export interface PropertyMeta {
   yearBuilt: number;
   tenure: string;
   currentEpcRating: string;
+  currentSapPoints: number;
 }
 
 export type Rating = "Very good" | "Good" | "Poor" | "Very poor" | "N/A";
diff --git a/src/app/db/schema/recommendations.ts b/src/app/db/schema/recommendations.ts
index 34d9a136..0fbb1fed 100644
--- a/src/app/db/schema/recommendations.ts
+++ b/src/app/db/schema/recommendations.ts
@@ -5,6 +5,7 @@ export interface ComponentRecommendation {
   estimatedCost: number;
   default: boolean;
   newUValue?: number;
+  sapPoints: number;
 }
 
 export interface Recommendation {
diff --git a/src/app/portfolio/[slug]/building-passport/[propertyId]/layout.tsx b/src/app/portfolio/[slug]/building-passport/[propertyId]/layout.tsx
index 85058c46..67096b01 100644
--- a/src/app/portfolio/[slug]/building-passport/[propertyId]/layout.tsx
+++ b/src/app/portfolio/[slug]/building-passport/[propertyId]/layout.tsx
@@ -27,6 +27,7 @@ export default function DashboardLayout({
     yearBuilt: 1990,
     tenure: "Rented (social)",
     currentEpcRating: "C",
+    currentSapPoints: 78,
   };
   if (!propertyId && propertyId !== 0) {
     throw Error("Invalid propertyId");
diff --git a/src/app/portfolio/[slug]/building-passport/[propertyId]/page.tsx b/src/app/portfolio/[slug]/building-passport/[propertyId]/page.tsx
index f435b4c3..ec7cad13 100644
--- a/src/app/portfolio/[slug]/building-passport/[propertyId]/page.tsx
+++ b/src/app/portfolio/[slug]/building-passport/[propertyId]/page.tsx
@@ -26,6 +26,7 @@ export default function BuildingPassportHome() {
     yearBuilt: 1990,
     tenure: "Rented (social)",
     currentEpcRating: "C",
+    currentSapPoints: 78,
   };
 
   return (
diff --git a/src/app/portfolio/[slug]/building-passport/[propertyId]/recommendations/page.tsx b/src/app/portfolio/[slug]/building-passport/[propertyId]/recommendations/page.tsx
index d36607a5..408b07b9 100644
--- a/src/app/portfolio/[slug]/building-passport/[propertyId]/recommendations/page.tsx
+++ b/src/app/portfolio/[slug]/building-passport/[propertyId]/recommendations/page.tsx
@@ -1,7 +1,30 @@
-import { Recommendation } from "@/app/db/schema/recommendations";
+import {
+  ComponentRecommendation,
+  Recommendation,
+} from "@/app/db/schema/recommendations";
 import RecommendationCard from "@/app/components/building-passport/RecommendationCard";
+import { formatNumber, sapToEpc } from "@/app/utils";
+import { PropertyMeta } from "@/app/db/schema/property";
 
 export default function Recommendations() {
+  const propertyMeta: PropertyMeta = {
+    id: 1,
+    address: "123 Fake Street",
+    postcode: "AB1 2CD",
+    hasPreConditionReport: true,
+    hasRecommendations: true,
+    createdAt: "2023-07-12 11:51:31.000 +0100",
+    propertyType: "House",
+    builtForm: "Detached",
+    localAuthority: "Birmingham",
+    constituency: "Birmingham",
+    numberOfRooms: 5,
+    yearBuilt: 1990,
+    tenure: "Rented (social)",
+    currentEpcRating: "C",
+    currentSapPoints: 78,
+  };
+
   const recommendations: Recommendation = {
     Walls: [
       {
@@ -11,6 +34,7 @@ export default function Recommendations() {
         estimatedCost: 9_450,
         default: true,
         newUValue: 0.29,
+        sapPoints: 11,
       },
       {
         id: 2,
@@ -19,6 +43,7 @@ export default function Recommendations() {
         estimatedCost: 10_135,
         default: false,
         newUValue: 0.28,
+        sapPoints: 12,
       },
       {
         id: 3,
@@ -28,6 +53,7 @@ export default function Recommendations() {
         estimatedCost: 13_450,
         default: false,
         newUValue: 0.25,
+        sapPoints: 14,
       },
     ],
     Ventilation: [
@@ -37,6 +63,7 @@ export default function Recommendations() {
         description: "Two decentralised mechanical ventilation units",
         estimatedCost: 750,
         default: true,
+        sapPoints: -2,
       },
     ],
     Floor: [
@@ -47,6 +74,7 @@ export default function Recommendations() {
         estimatedCost: 3_450,
         default: true,
         newUValue: 0.24,
+        sapPoints: 7,
       },
       {
         id: 5,
@@ -55,13 +83,74 @@ export default function Recommendations() {
         estimatedCost: 4_120,
         default: true,
         newUValue: 0.24,
+        sapPoints: 7,
       },
     ],
   };
 
+  const defaultWallsRecommendations = recommendations.Walls?.find(
+    (rec: ComponentRecommendation) => rec.default
+  ) || { estimatedCost: 0, sapPoints: 0 };
+
+  const defaultFloorRecommendations = recommendations.Floor?.find(
+    (rec: ComponentRecommendation) => rec.default
+  ) || { estimatedCost: 0, sapPoints: 0 };
+
+  const defaultVentiliationRecommendations = recommendations.Ventilation?.find(
+    (rec: ComponentRecommendation) => rec.default
+  ) || { estimatedCost: 0, sapPoints: 0 };
+
+  const totalEstimatedCost =
+    (defaultWallsRecommendations.estimatedCost || 0) +
+    (defaultFloorRecommendations.estimatedCost || 0) +
+    (defaultVentiliationRecommendations.estimatedCost || 0);
+
+  const totalSapPoints =
+    (defaultWallsRecommendations.sapPoints || 0) +
+    (defaultFloorRecommendations.sapPoints || 0) +
+    (defaultVentiliationRecommendations.sapPoints || 0);
+
+  const currentEpcRating = propertyMeta.currentEpcRating;
+  const currentSapPoints = propertyMeta.currentSapPoints;
+
+  const expectedSapPoints = currentSapPoints + totalSapPoints;
+  const expectedEpcRating = sapToEpc(expectedSapPoints);
+
   return (
     <div className="leading-loose tracking-wider">
       <div className="flex py-8 text-lg">Recommendations</div>
+
+      <div className="mb-4 flex flex-col grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4 items-stretch">
+        <table className="text-left bg-gray-600 rounded-md text-gray-100">
+          <tbody>
+            <tr>
+              <td className="font-medium pl-4 py-2">Total Cost:</td>
+              <td>{"£" + formatNumber(totalEstimatedCost)}</td>
+            </tr>
+
+            <tr>
+              <td className="font-medium pl-4 py-2">
+                Total SAP Points Improvement:
+              </td>
+              <td>{totalSapPoints}</td>
+            </tr>
+          </tbody>
+        </table>
+
+        <table className="text-left bg-gray-600 rounded-md text-gray-100">
+          <tbody>
+            <tr>
+              <td className="font-medium pl-4 py-2">Current EPC Rating:</td>
+              <td className="font-bold">{currentEpcRating}</td>
+            </tr>
+
+            <tr>
+              <td className="font-medium pl-4 py-2">Expected EPC Rating:</td>
+              <td className="font-bold">{expectedEpcRating}</td>
+            </tr>
+          </tbody>
+        </table>
+      </div>
       <div className="flex flex-col grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4 items-stretch">
         {Object.entries(recommendations).map(
           ([componentType, recommendationData], idx) => {
diff --git a/src/app/utils.ts b/src/app/utils.ts
index 7c710755..1468ab83 100644
--- a/src/app/utils.ts
+++ b/src/app/utils.ts
@@ -1,3 +1,25 @@
+export function sapToEpc(sapPoints: number): string {
+  if (sapPoints <= 0 || sapPoints > 100) {
+    throw new Error("SAP points should be between 1 and 100.");
+  }
+
+  if (sapPoints > 91) {
+    return "A";
+  } else if (sapPoints > 80) {
+    return "B";
+  } else if (sapPoints > 69) {
+    return "C";
+  } else if (sapPoints > 55) {
+    return "D";
+  } else if (sapPoints > 39) {
+    return "E";
+  } else if (sapPoints > 21) {
+    return "F";
+  } else {
+    return "G";
+  }
+}
+
 export function formatDateTime(dateTimeString: string): string {
   // Create a new Date object
   const dateTime = new Date(dateTimeString);