From 1a3d5a86e177898fe98d6b49911c84bfcc4fca9d Mon Sep 17 00:00:00 2001
From: MuslemRahimi <moslem_rahimi@hotmail.de>
Date: Fri, 7 Jun 2024 10:28:42 +0200
Subject: [PATCH] add lazy loading to AnalystEstimate component

---
 src/lib/components/AnalystEstimate.svelte     | 192 ++++++++++++------
 .../stocks/[tickerID]/+layout.server.ts       |   3 -
 src/routes/stocks/[tickerID]/+page.svelte     |  19 +-
 3 files changed, 139 insertions(+), 75 deletions(-)

diff --git a/src/lib/components/AnalystEstimate.svelte b/src/lib/components/AnalystEstimate.svelte
index 1603fe38..865814f1 100644
--- a/src/lib/components/AnalystEstimate.svelte
+++ b/src/lib/components/AnalystEstimate.svelte
@@ -1,5 +1,5 @@
 <script lang='ts'>
-import {screenWidth} from '$lib/store';
+import {stockTicker, screenWidth, userRegion, getCache, setCache} from '$lib/store';
 import InfoModal from '$lib/components/InfoModal.svelte';
 
 import { LayerCake, Html } from 'layercake';
@@ -9,9 +9,23 @@ import AxisX from '$lib/components/Scatter//AxisX.html.svelte';
 import AxisY from '$lib/components/Scatter//AxisY.html.svelte';
 
 
-export let analystEstimateList;
 export let data;
 
+let analystEstimateList = [];
+let isLoaded = false;
+const usRegion = ['cle1','iad1','pdx1','sfo1'];
+
+let apiURL;
+
+userRegion.subscribe(value => {
+
+    if (usRegion.includes(value)) {
+    apiURL = import.meta.env.VITE_USEAST_API_URL;
+    } else {
+    apiURL = import.meta.env.VITE_EU_API_URL;
+    }
+});
+
 let deactivateContent = data?.user?.tier === 'Pro' ? false : true;
 
 let dataset = [];
@@ -51,78 +65,124 @@ const padding = 2.5;
 let tableDataActual = [];
 let tableDataForecast = []
 
+const getAnalystEstimate = async (ticker) => {
+    // Get cached data for the specific tickerID
+    const cachedData = getCache(ticker, 'getAnalystEstimate');
+    if (cachedData) {
+      analystEstimateList = cachedData;
+    } else {
+
+      const postData = {'ticker': ticker};
+      // make the POST request to the endpoint
+      const response = await fetch(apiURL + '/analyst-estimate', {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify(postData)
+      });
+
+      analystEstimateList = await response?.json();
+
+      // Cache the data for this specific tickerID with a specific name 'getAnalystEstimate'
+      setCache(ticker, analystEstimateList, 'getAnalystEstimate');
+    }
+};
+
+
 //To-do: Optimize this piece of shit
-$: {
-  if (displayData && analystEstimateList?.length !== 0)
-  {
+function prepareData(analystEstimateList) {
+
     dataset = [];
     tableDataActual = [];
     tableDataForecast = [];
 
     xData = analystEstimateList?.slice(-7)?.map(({ date }) => Number(String(date)?.slice(-2)));
 
-        if(displayData === 'Revenue') {
+    if(displayData === 'Revenue') {
 
-            const { unit, denominator } = determineDisplayUnit(analystEstimateList?.at(-1)?.estimatedRevenueAvg);
-            displayRevenueUnit = unit;
-            
-            analystEstimateList?.slice(-7)?.forEach(item => {
-            
-            tableDataActual?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': (item?.revenue/ denominator)?.toFixed(2)});
-            tableDataForecast?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': (item?.estimatedRevenueAvg/denominator)?.toFixed(2)});
-
-            if (item?.revenue !== null) {
-                dataset?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': (item?.revenue/denominator)?.toFixed(2), 'dataset': 'actual' });
-            }
-                dataset?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': item?.estimatedRevenueAvg !== null ? (item?.estimatedRevenueAvg / denominator)?.toFixed(2) : null, 'dataset': 'forecast' });
-            });
+        const { unit, denominator } = determineDisplayUnit(analystEstimateList?.at(-1)?.estimatedRevenueAvg);
+        displayRevenueUnit = unit;
+        
+        analystEstimateList?.slice(-7)?.forEach(item => {
+        
+        tableDataActual?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': (item?.revenue/ denominator)?.toFixed(2)});
+        tableDataForecast?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': (item?.estimatedRevenueAvg/denominator)?.toFixed(2)});
 
+        if (item?.revenue !== null) {
+            dataset?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': (item?.revenue/denominator)?.toFixed(2), 'dataset': 'actual' });
         }
+            dataset?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': item?.estimatedRevenueAvg !== null ? (item?.estimatedRevenueAvg / denominator)?.toFixed(2) : null, 'dataset': 'forecast' });
+        });
 
-        else if(displayData === 'Net Income') {
+    }
 
-            const { unit, denominator } = analystEstimateList?.at(-2)?.estimatedNetIncomeAvg !== 0 ? determineDisplayUnit(analystEstimateList?.at(-2)?.estimatedNetIncomeAvg) : determineDisplayUnit(analystEstimateList?.at(-1)?.netIncome);
-            displayNetIncomeUnit = unit;
+    else if(displayData === 'Net Income') {
 
-            analystEstimateList?.slice(-7)?.forEach(item => {
-            
-            tableDataActual?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': (item?.netIncome / denominator)?.toFixed(2)});
-            tableDataForecast?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': (item?.estimatedNetIncomeAvg / denominator)?.toFixed(2)});
-            
-            if (item?.netIncome !== null) {
-                dataset?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': (item?.netIncome / denominator)?.toFixed(2), 'dataset': 'actual' });
-            }
-                dataset?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': item?.estimatedNetIncomeAvg !== null ? (item?.estimatedNetIncomeAvg / denominator)?.toFixed(2) : null, 'dataset': 'forecast' });
-            });
+        const { unit, denominator } = analystEstimateList?.at(-2)?.estimatedNetIncomeAvg !== 0 ? determineDisplayUnit(analystEstimateList?.at(-2)?.estimatedNetIncomeAvg) : determineDisplayUnit(analystEstimateList?.at(-1)?.netIncome);
+        displayNetIncomeUnit = unit;
+
+        analystEstimateList?.slice(-7)?.forEach(item => {
+        
+        tableDataActual?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': (item?.netIncome / denominator)?.toFixed(2)});
+        tableDataForecast?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': (item?.estimatedNetIncomeAvg / denominator)?.toFixed(2)});
+        
+        if (item?.netIncome !== null) {
+            dataset?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': (item?.netIncome / denominator)?.toFixed(2), 'dataset': 'actual' });
         }
+            dataset?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': item?.estimatedNetIncomeAvg !== null ? (item?.estimatedNetIncomeAvg / denominator)?.toFixed(2) : null, 'dataset': 'forecast' });
+        });
+    }
 
-        else if(displayData === 'EPS') {
-            analystEstimateList?.slice(-7)?.forEach(item => {
+    else if(displayData === 'EPS') {
+        analystEstimateList?.slice(-7)?.forEach(item => {
 
-            tableDataActual?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': item?.eps?.toFixed(2) ?? null});
-            tableDataForecast?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': item?.estimatedEpsAvg?.toFixed(2)});
-            if (item?.eps !== null) {
-                dataset?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': item?.eps, 'dataset': 'actual' });
-            }
-                dataset?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': item?.estimatedEpsAvg !== null ? item?.estimatedEpsAvg : null, 'dataset': 'forecast' });
-            });
+        tableDataActual?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': item?.eps?.toFixed(2) ?? null});
+        tableDataForecast?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': item?.estimatedEpsAvg?.toFixed(2)});
+        if (item?.eps !== null) {
+            dataset?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': item?.eps, 'dataset': 'actual' });
         }
+            dataset?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': item?.estimatedEpsAvg !== null ? item?.estimatedEpsAvg : null, 'dataset': 'forecast' });
+        });
+    }
 
-        else if(displayData === 'EBITDA') {
-            const { unit, denominator } = determineDisplayUnit(analystEstimateList?.at(-1)?.estimatedEbitdaAvg);
-            displayEBITDAUnit = unit;
+    else if(displayData === 'EBITDA') {
+        const { unit, denominator } = determineDisplayUnit(analystEstimateList?.at(-1)?.estimatedEbitdaAvg);
+        displayEBITDAUnit = unit;
 
-            analystEstimateList?.slice(-7)?.forEach(item => {
-            
-            tableDataActual?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': (item?.ebitda/ denominator)?.toFixed(2)});
-            tableDataForecast?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': (item?.estimatedEbitdaAvg/ denominator)?.toFixed(2)});
+        analystEstimateList?.slice(-7)?.forEach(item => {
+        
+        tableDataActual?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': (item?.ebitda/ denominator)?.toFixed(2)});
+        tableDataForecast?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': (item?.estimatedEbitdaAvg/ denominator)?.toFixed(2)});
 
-            if (item?.ebitda !== null) {
-                dataset?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': (item?.ebitda / denominator)?.toFixed(2), 'dataset': 'actual' });
-            }
-                dataset?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': item?.estimatedEbitdaAvg !== null ? (item?.estimatedEbitdaAvg / denominator)?.toFixed(2) : null, 'dataset': 'forecast' });
-            });
+        if (item?.ebitda !== null) {
+            dataset?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': (item?.ebitda / denominator)?.toFixed(2), 'dataset': 'actual' });
         }
+            dataset?.push({ 'FY': Number(String(item?.date)?.slice(-2)), 'val': item?.estimatedEbitdaAvg !== null ? (item?.estimatedEbitdaAvg / denominator)?.toFixed(2) : null, 'dataset': 'forecast' });
+        });
+    }
+
+}
+
+$: {
+  if ($stockTicker && displayData && typeof window !== 'undefined')
+  {
+    isLoaded = false;
+
+
+    const asyncFunctions = [
+        getAnalystEstimate($stockTicker)
+      ];
+      Promise.all(asyncFunctions)
+          .then((results) => {
+            prepareData(analystEstimateList)
+        
+          })
+          .catch((error) => {
+            console.error('An error occurred:', error);
+          });
+    isLoaded = true;
+  
   }
 
   
@@ -141,17 +201,14 @@ $: {
             <main>
                 <div class="w-fit sm:w-full sm:max-w-2xl m-auto mt-5 sm:mt-0">
                     
-   
-                {#if analystEstimateList?.length !== 0}
-
                 <div class="flex flex-row items-center">
                     <label for="predictiveFundamentalsInfo" class="mr-1 cursor-pointer flex flex-row items-center text-white text-xl sm:text-3xl font-bold">
-                      Predictive Fundamentals
+                        Predictive Fundamentals
                     </label>
                     <InfoModal
-                      title={"Predictive Fundamentals"}
-                      content={`If quarterly earnings for a year are incomplete, we offer a summarized view based on available data. For instance, if the Q4 report is missing, we display revenue as X, reflecting the sum of Q1-Q3 only. Q4 data will be added later when available.`}
-                      id={"predictiveFundamentalsInfo"}
+                        title={"Predictive Fundamentals"}
+                        content={`If quarterly earnings for a year are incomplete, we offer a summarized view based on available data. For instance, if the Q4 report is missing, we display revenue as X, reflecting the sum of Q1-Q3 only. Q4 data will be added later when available.`}
+                        id={"predictiveFundamentalsInfo"}
                     />
                 </div>
     
@@ -159,6 +216,9 @@ $: {
                 <div class="text-white text-sm sm:text-[1rem] mt-1 sm:mt-3 mb-1 w-full sm:w-5/6">
                     We analyze insights from various analysts to offer both historical and future fundamental data forecasts.
                 </div>
+                {#if isLoaded}
+
+                {#if analystEstimateList?.length !== 0}
 
 
                     <select class="mt-5 mb-5 sm:mb-0 sm:mt-3 ml-1 w-44 select select-bordered select-sm p-0 pl-5 overflow-y-auto bg-[#2A303C]" on:change={changeStatement}>
@@ -282,7 +342,17 @@ $: {
                     <svg class="w-10 sm:w-12 inline-block" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path fill="#334155" d="M18.68 12.32a4.49 4.49 0 0 0-6.36.01a4.49 4.49 0 0 0 0 6.36a4.508 4.508 0 0 0 5.57.63L21 22.39L22.39 21l-3.09-3.11c1.13-1.77.87-4.09-.62-5.57m-1.41 4.95c-.98.98-2.56.97-3.54 0c-.97-.98-.97-2.56.01-3.54c.97-.97 2.55-.97 3.53 0c.97.98.97 2.56 0 3.54M10.9 20.1a6.527 6.527 0 0 1-1.48-2.32C6.27 17.25 4 15.76 4 14v3c0 2.21 3.58 4 8 4c-.4-.26-.77-.56-1.1-.9M4 9v3c0 1.68 2.07 3.12 5 3.7v-.2c0-.93.2-1.85.58-2.69C6.34 12.3 4 10.79 4 9m8-6C7.58 3 4 4.79 4 7c0 2 3 3.68 6.85 4h.05c1.2-1.26 2.86-2 4.6-2c.91 0 1.81.19 2.64.56A3.215 3.215 0 0 0 20 7c0-2.21-3.58-4-8-4Z"/></svg>
                 </h2>
                 {/if}
-                
+
+                {:else}
+                <div class="flex justify-center items-center h-80">
+                    <div class="relative">
+                    <label class="bg-[#202020] rounded-xl h-14 w-14 flex justify-center items-center absolute top-1/2 left-1/2 transform -translate-x-1/2 -translate-y-1/2">
+                        <span class="loading loading-spinner loading-md"></span>
+                    </label>
+                    </div>
+                </div>  
+                {/if}
+
             </div>
         </main>
         </div>
diff --git a/src/routes/stocks/[tickerID]/+layout.server.ts b/src/routes/stocks/[tickerID]/+layout.server.ts
index 26eec58b..1a9c6848 100644
--- a/src/routes/stocks/[tickerID]/+layout.server.ts
+++ b/src/routes/stocks/[tickerID]/+layout.server.ts
@@ -142,7 +142,6 @@ export const load = async ({ params, locals, cookies}) => {
     fetchData(apiURL,'/stockdeck',params.tickerID),
     fetchData(apiURL,'/stock-correlation',params.tickerID),
     fetchData(apiURL,'/analyst-summary-rating',params.tickerID),
-    fetchData(apiURL,'/analyst-estimate',params.tickerID),
     fetchData(apiURL,'/stock-quote',params.tickerID),
     fetchData(apiURL,'/stock-rating',params.tickerID),
     fetchData(apiURL,'/options-bubble',params.tickerID),
@@ -167,7 +166,6 @@ export const load = async ({ params, locals, cookies}) => {
     getStockDeck,
     getCorrelation,
     getAnalystRating,
-    getAnalystEstimate,
     getStockQuote,
     getStockTARating,
     getOptionsData,
@@ -198,7 +196,6 @@ export const load = async ({ params, locals, cookies}) => {
     getStockDeck,
     getCorrelation,
     getAnalystRating,
-    getAnalystEstimate,
     getStockQuote,
     getStockTARating,
     getOptionsData,
diff --git a/src/routes/stocks/[tickerID]/+page.svelte b/src/routes/stocks/[tickerID]/+page.svelte
index bcc35fa4..0899248a 100644
--- a/src/routes/stocks/[tickerID]/+page.svelte
+++ b/src/routes/stocks/[tickerID]/+page.svelte
@@ -5,7 +5,6 @@
   import { TrackingModeExitMode } from 'lightweight-charts';
   import {screenWidth, displayCompanyName, numberOfUnreadNotification, globalForm, userRegion, isCrosshairMoveActive, realtimePrice, priceIncrease, currentPortfolioPrice, currentPrice, clientSideCache, stockTicker, isOpen, isBeforeMarketOpen, isWeekend} from '$lib/store';
   import { onDestroy, onMount } from 'svelte';
-  import AnalystEstimate from '$lib/components/AnalystEstimate.svelte';
   import StockKeyInformation from '$lib/components/StockKeyInformation.svelte';
   import BullBearSay from '$lib/components/BullBearSay.svelte';
   import CommunitySentiment from '$lib/components/CommunitySentiment.svelte';
@@ -31,7 +30,6 @@
   
     let pricePrediction = data?.getPricePrediction ?? [];
     let stockDeck = data?.getStockDeck ?? [];
-    let analystEstimateList = data?.getAnalystEstimate ?? []
     let fairPrice = data?.getFairPrice ?? [];
     let correlationList = data?.getCorrelation?.correlation ?? [];
     let modelStats = data?.getTradingSignals ?? {};
@@ -73,7 +71,6 @@
 
   //let StockKeyInformation;
 
-  //let AnalystEstimate;
 
 
 
@@ -641,7 +638,6 @@ function changeChartType() {
       modelStats = data?.getTradingSignals;
       stockDeck = data?.getStockDeck;
       correlationList = data?.getCorrelation?.correlation;
-      analystEstimateList = data?.getAnalystEstimate;
       previousClose = data?.getStockQuote?.previousClose;
       marketMoods = data?.getBullBearSay;
       taRating = data?.getStockTARating;
@@ -1241,14 +1237,15 @@ function changeChartType() {
                                 </div>
                                 {/if}
                                 
-                                
-                                  <div class="w-full  m-auto sm:pl-6 sm:pb-6 sm:pt-6 {analystEstimateList?.length !== 0 ? '' : 'hidden'}">
-  
-                                    {#if AnalystEstimate}
-                                    <AnalystEstimate data={data} analystEstimateList={analystEstimateList}/>
-                                    {/if}
-  
+                              
+
+                                <Lazy>
+                                  <div class="w-full m-auto sm:pl-6 sm:pb-6 sm:pt-6">
+                                  {#await import('$lib/components/AnalystEstimate.svelte') then {default: Comp}}
+                                    <svelte:component this={Comp} data={data}/>
+                                  {/await}
                                   </div>
+                                </Lazy>
 
     
                                   <Lazy>