From 652c08f5567eced4b53da43c868210eac5fcca07 Mon Sep 17 00:00:00 2001
From: MuslemRahimi <moslem_rahimi@hotmail.de>
Date: Mon, 7 Apr 2025 01:03:56 +0200
Subject: [PATCH] add search query to calculator+contract lookup

---
 .../components/Options/ContractLookup.svelte  | 69 +++++++++++++------
 src/lib/utils.ts                              | 27 ++++++++
 src/routes/options-calculator/+page.svelte    | 23 ++++++-
 3 files changed, 95 insertions(+), 24 deletions(-)

diff --git a/src/lib/components/Options/ContractLookup.svelte b/src/lib/components/Options/ContractLookup.svelte
index 76cda296..6039c289 100644
--- a/src/lib/components/Options/ContractLookup.svelte
+++ b/src/lib/components/Options/ContractLookup.svelte
@@ -1,10 +1,15 @@
 <script lang="ts">
-  import { abbreviateNumber, buildOptionSymbol } from "$lib/utils";
+  import {
+    abbreviateNumber,
+    buildOptionSymbol,
+    parseOptionSymbol,
+  } from "$lib/utils";
   import { setCache, getCache } from "$lib/store";
   import * as DropdownMenu from "$lib/components/shadcn/dropdown-menu/index.js";
   import { Button } from "$lib/components/shadcn/button/index.js";
   import Infobox from "$lib/components/Infobox.svelte";
   import UpgradeToPro from "$lib/components/UpgradeToPro.svelte";
+  import { page } from "$app/stores";
 
   import { onMount } from "svelte";
 
@@ -15,17 +20,19 @@
   export let ticker;
 
   let isLoaded = false;
+  let currentStockPrice = data?.getStockQuote?.price;
   let config = null;
-  let selectedOptionType = "Call";
-  let optionData = data?.getData[selectedOptionType];
+  let selectedOptionType;
+
+  let optionData = {};
 
   let dateList = Object?.keys(optionData);
 
-  let selectedDate = Object?.keys(optionData)[0];
+  let selectedDate;
 
-  let strikeList = optionData[selectedDate] || [];
+  let strikeList = [];
 
-  let selectedStrike = strikeList?.at(0) || [];
+  let selectedStrike;
   let optionSymbol = "n/a";
 
   let displayList = [];
@@ -34,6 +41,34 @@
   let infoText = {};
   let tooltipTitle;
 
+  let optionQuery = $page.url.searchParams.get("query") || "";
+
+  try {
+    if (optionQuery?.length > 0) {
+      const parsedData = parseOptionSymbol(optionQuery);
+      selectedOptionType = parsedData?.optionType;
+      optionData = data?.getData[selectedOptionType];
+      selectedDate = parsedData?.dateExpiration;
+      strikeList = optionData[selectedDate] || [];
+      selectedStrike = parsedData?.strikePrice;
+    } else {
+    }
+  } catch (e) {
+    selectedOptionType = "Call";
+    optionData = data?.getData[selectedOptionType];
+
+    selectedDate = Object?.keys(optionData)[0];
+    strikeList = [...optionData[selectedDate]] || [];
+    if (!strikeList?.includes(selectedStrike)) {
+      selectedStrike = strikeList.reduce((closest, strike) => {
+        return Math.abs(strike - currentStockPrice) <
+          Math.abs(closest - currentStockPrice)
+          ? strike
+          : closest;
+      }, strikeList[0]);
+    }
+  }
+
   const formatDate = (dateString) => {
     const date = new Date(dateString);
     return date.toLocaleDateString("en-US", {
@@ -43,20 +78,6 @@
     });
   };
 
-  const currentTime = new Date(
-    new Date().toLocaleString("en-US", { timeZone: "America/New_York" }),
-  )?.getTime();
-
-  function daysLeft(targetDate) {
-    const targetTime = new Date(targetDate).getTime();
-    const difference = targetTime - currentTime;
-
-    const millisecondsPerDay = 1000 * 60 * 60 * 24;
-    const daysLeft = Math?.ceil(difference / millisecondsPerDay);
-
-    return daysLeft + "D";
-  }
-
   function calculateDTE(data, dateExpiration) {
     // Convert the expiration date to a Date object
     const expirationDate = new Date(dateExpiration);
@@ -384,7 +405,12 @@
     strikeList = [...optionData[selectedDate]];
 
     if (!strikeList?.includes(selectedStrike)) {
-      selectedStrike = strikeList?.at(0); // Set to first element if not found
+      selectedStrike = strikeList.reduce((closest, strike) => {
+        return Math.abs(strike - currentStockPrice) <
+          Math.abs(closest - currentStockPrice)
+          ? strike
+          : closest;
+      }, strikeList[0]);
     }
 
     displayList = [];
@@ -396,6 +422,7 @@
       selectedOptionType,
       selectedStrike,
     );
+
     const output = await getContractHistory(optionSymbol);
     rawDataHistory = output?.history;
 
diff --git a/src/lib/utils.ts b/src/lib/utils.ts
index d8ac6ca6..2d0f90c4 100644
--- a/src/lib/utils.ts
+++ b/src/lib/utils.ts
@@ -43,6 +43,33 @@ export function buildOptionSymbol(ticker, dateExpiration, optionType, strikePric
     return `${ticker}${expirationStr}${optionTypeChar}${strikeStr}`;
   }
 
+  export function parseOptionSymbol(optionSymbol) {
+  // Extract the ticker (everything before the 6-digit date + 1 character + 8-digit strike)
+  const match = optionSymbol.match(/^([A-Z]+)(\d{6})([CP])(\d{8})$/);
+  if (!match) throw new Error("Invalid option symbol format");
+
+  const [, ticker, datePart, optionTypeChar, strikeStr] = match;
+
+  // Parse and format the expiration date manually
+  const year = (parseInt(datePart.slice(0, 2), 10) + 2000).toString();
+  const month = datePart.slice(2, 4); // Already 2-digit string
+  const day = datePart.slice(4, 6);   // Already 2-digit string
+  const dateExpiration = `${year}-${month}-${day}`;
+
+  // Convert the option type character back to "call" or "put"
+  const optionType = optionTypeChar === "C" ? "Call" : "Put";
+
+  // Convert strike price string back to a float
+  const strikePrice = parseInt(strikeStr, 10) / 1000;
+
+  return {
+    ticker,
+    dateExpiration,
+    optionType,
+    strikePrice,
+  };
+}
+
 
 export function convertToSlug(title) {
     // Remove punctuation, hyphens, and special characters
diff --git a/src/routes/options-calculator/+page.svelte b/src/routes/options-calculator/+page.svelte
index 5cd41401..47fbcda3 100644
--- a/src/routes/options-calculator/+page.svelte
+++ b/src/routes/options-calculator/+page.svelte
@@ -7,6 +7,7 @@
   import { setCache, getCache, screenWidth } from "$lib/store";
   import { Combobox } from "bits-ui";
   import InfoModal from "$lib/components/InfoModal.svelte";
+  import Link from "lucide-svelte/icons/square-arrow-out-up-right";
 
   import { mode } from "mode-watcher";
   import highcharts from "$lib/highcharts.ts";
@@ -18,6 +19,8 @@
   let selectedStrategy = "Long Call";
   let selectedOptionType = "Call";
   let selectedTicker = "TSLA";
+  let assetType = "stocks";
+
   let selectedAction = "Buy";
   let selectedOptionPrice;
   let selectedQuantity = 1;
@@ -533,8 +536,10 @@
     }, strikeList[0]);
   }
 
-  async function changeTicker(symbol) {
-    selectedTicker = symbol;
+  async function changeTicker(data) {
+    selectedTicker = data?.symbol;
+    assetType = data?.type?.toLowerCase() || "stocks";
+
     await getStockData();
     await loadData("default");
   }
@@ -670,6 +675,8 @@
                       >
                         Price
                       </th>
+                      <th scope="col" class="px-4 py-1.5 text-sm font-semibold"
+                      ></th>
                     </tr>
                   </thead>
 
@@ -703,7 +710,7 @@
                                   class="cursor-pointer border-b border-gray-300 dark:border-gray-500 last:border-none flex h-fit w-auto select-none items-center rounded-button py-3 pl-5 pr-1.5 text-sm capitalize outline-hidden transition-all duration-75 data-highlighted:bg-gray-200 dark:data-highlighted:bg-primary"
                                   value={item?.symbol}
                                   label={item?.symbol}
-                                  on:click={(e) => changeTicker(item?.symbol)}
+                                  on:click={(e) => changeTicker(item)}
                                 >
                                   <div class="flex flex-col items-start">
                                     <span
@@ -853,6 +860,16 @@
                           class="border border-gray-300 dark:border-gray-500 rounded px-2 py-1 w-24 focus:outline-none focus:ring-1 focus:ring-blue-500"
                         />
                       </td>
+                      <td class="px-4 py-3 whitespace-nowrap">
+                        <a
+                          href={`/${["stocks", "stock"]?.includes(assetType) ? "stocks" : assetType === "etf" ? "etf" : "index"}/${selectedTicker}/options/contract-lookup?query=${optionSymbol}`}
+                          rel="noopener noreferrer"
+                          target="_blank"
+                          class="option-leg-link-to-contract"
+                        >
+                          <Link class="w-4 h-4 text-gray-100" />
+                        </a>
+                      </td>
 
                       <!--
                       <td class="px-4 py-3 whitespace-nowrap">