Merge pull request #242 from CarmineOptions/feature/proposal-add-options

Feature/proposal add options
CarmineOptions · Oct 8, 2024 · e38ea1f · e38ea1f
2 parents 6651241 + 908c4c2
commit e38ea1f
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Showing 13 changed files with 688 additions and 4 deletions.
diff --git a/src/api/index.tsx b/src/api/index.tsx
@@ -1,4 +1,5 @@
 import { API_URL, NETWORK } from "../constants/amm";
+import { ApiResponse, TokenPriceData } from "../types/api";
 
 export type ApiConfig = {
   network?: "testnet" | "mainnet";
@@ -25,3 +26,13 @@ export const apiUrl = (path: string, config?: ApiConfig): string => {
 
   return url.toString();
 };
+
+export const fetchTokenPrices = async () => {
+  const url = apiUrl("token-prices");
+  const res = await fetch(url);
+  const body = (await res.json()) as ApiResponse<TokenPriceData>;
+  if (body.status === "success") {
+    return body.data;
+  }
+  throw Error("Failed getting token prices");
+};
diff --git a/src/classes/Option.ts b/src/classes/Option.ts
@@ -47,13 +47,13 @@ export class Option extends Pool {
       typeof strike === "string" ? strike : "0x" + strike.toString(16);
     this.strike = math64toDecimal(strike, mathBase);
     this.side = bnToOptionSide(side);
-    this.optionId = this.generateId();
+    this.optionId = this.generateOptionId();
   }
 
   /**
    * Generates id that uniquily describes option
    */
-  generateId(): string {
+  generateOptionId(): string {
     return JSON.stringify({
       base: this.baseToken.id,
       quote: this.quoteToken.id,

diff --git a/src/classes/Pool.ts b/src/classes/Pool.ts
@@ -21,7 +21,7 @@ import { shortInteger } from "../utils/computations";
 import { bnToOptionType } from "../utils/conversions";
 import { toHex } from "../utils/utils";
 import { Pair, PairKey } from "./Pair";
-import { Token } from "./Token";
+import { Token, TokenKey } from "./Token";
 
 export class Pool extends Pair {
   public type: OptionType;
@@ -203,6 +203,74 @@ export class Pool extends Pair {
   get name(): string {
     return `${this.baseToken.symbol}/${this.quoteToken.symbol} ${this.typeAsText} Pool (${this.symbol})`;
   }
+
+  get strikeStep(): [number, number] {
+    if (
+      this.baseToken.id === TokenKey.ETH &&
+      this.quoteToken.id === TokenKey.USDC
+    ) {
+      // ETH/USDC
+      return [100, 200];
+    }
+    if (
+      this.baseToken.id === TokenKey.STRK &&
+      this.quoteToken.id === TokenKey.USDC
+    ) {
+      // STRK/USDC
+      return [0.05, 0.05];
+    }
+    if (
+      this.baseToken.id === TokenKey.ETH &&
+      this.quoteToken.id === TokenKey.STRK
+    ) {
+      // ETH/STRK
+      return [100, 300];
+    }
+    if (
+      this.baseToken.id === TokenKey.BTC &&
+      this.quoteToken.id === TokenKey.USDC
+    ) {
+      // BTC/USDC
+      return [1000, 3000];
+    }
+
+    // unreachable
+    throw Error("Failed getting strike step");
+  }
+
+  get baseVolatility(): number {
+    if (
+      this.baseToken.id === TokenKey.ETH &&
+      this.quoteToken.id === TokenKey.USDC
+    ) {
+      // ETH/USDC
+      return 55;
+    }
+    if (
+      this.baseToken.id === TokenKey.STRK &&
+      this.quoteToken.id === TokenKey.USDC
+    ) {
+      // STRK/USDC
+      return 90;
+    }
+    if (
+      this.baseToken.id === TokenKey.ETH &&
+      this.quoteToken.id === TokenKey.STRK
+    ) {
+      // ETH/STRK
+      return 100;
+    }
+    if (
+      this.baseToken.id === TokenKey.BTC &&
+      this.quoteToken.id === TokenKey.USDC
+    ) {
+      // BTC/USDC
+      return 55;
+    }
+
+    // unreachable
+    throw Error("Failed getting base volatility");
+  }
 }
 
 export class PoolInfo extends Pool {