From e91317cbbc0bbcde55c01cb417e8faf7307263dd Mon Sep 17 00:00:00 2001
From: "munkhzulnee@gmail.com" <munkhzulnee@gmail.com>
Date: Fri, 16 Aug 2024 16:13:26 +0800
Subject: [PATCH] CD-2472 support for getting max LTVs of collections

---
 package.json |  2 +-
 src/api.ts   | 12 ++++++++++++
 src/sdk.ts   | 12 ++++++++++++
 src/types.ts | 24 ++++++++++++++++++++++++
 4 files changed, 49 insertions(+), 1 deletion(-)

diff --git a/package.json b/package.json
index df4da5b..d758d21 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-    "version": "0.2.0",
+    "version": "0.2.1",
     "license": "MIT",
     "main": "dist/index.js",
     "typings": "dist/index.d.ts",
diff --git a/src/api.ts b/src/api.ts
index 77d459f..11b5473 100644
--- a/src/api.ts
+++ b/src/api.ts
@@ -3,6 +3,7 @@ import {
     IConfigs,
     ICreateAcceptance,
     IFulfillOffer,
+    IGetCollectionsMaxLtvs,
     IGetCollectionTopBid,
     IOffer,
     IPlan,
@@ -36,6 +37,17 @@ export class CyanAPI {
         return await this.fetchData('/v2/configs');
     }
 
+    /**
+     * Retrieve the maximum LTVs for the given plan type and chain across all supported collections
+     */
+    public async getMaxLtvs(args: IGetCollectionsMaxLtvs['params']): Promise<IGetCollectionsMaxLtvs['result']> {
+        const { planType, chain } = args;
+        const queryParams = new URLSearchParams({
+            planType: planType.toString(),
+        });
+        return await this.fetchData(`/v2/collections/${chain}/max-ltv?${queryParams}`);
+    }
+
     /**
      * Creates acceptance signature
      */
diff --git a/src/sdk.ts b/src/sdk.ts
index b237f37..dd4b03e 100644
--- a/src/sdk.ts
+++ b/src/sdk.ts
@@ -29,6 +29,8 @@ import {
     IOffer,
     ICurrency,
     ItemType,
+    IGetCollectionsMaxLtvs,
+    PlanTypes,
 } from './types';
 import {
     generateBnplOptions,
@@ -441,6 +443,16 @@ export class CyanSDK {
         return topBids;
     }
 
+    /**
+     * Retrieve the maximum LTVs for the given plan type across all supported collections
+     * @param {string} planType - The plan type
+     * @returns {Promise<IGetCollectionsMaxLtvs['result']>} The maximum LTVs by currency address
+     */
+    public async getMaxLtvs(planType: 'bnpl' | 'pawn'): Promise<IGetCollectionsMaxLtvs['result']> {
+        const chain = await this._getChain();
+        return await this.api.getMaxLtvs({ chain, planType: PlanTypes[planType] });
+    }
+
     /**
      * Fulfill bid offer of the plan
      * @param {IPlan} plan - Plan object to sell
diff --git a/src/types.ts b/src/types.ts
index b5dbab4..8097489 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -10,6 +10,30 @@ export type ICyanSDKConstructor = {
 export const chains = ['mainnet', 'goerli', 'sepolia', 'polygon', 'mumbai', 'arbitrum', 'bsc', 'optimism'] as const;
 export type IChain = typeof chains[keyof typeof chains];
 
+export const PlanTypes = {
+    bnpl: 0,
+    pawn: 1,
+} as const;
+export type IPlanType = typeof PlanTypes[keyof typeof PlanTypes];
+
+type IGetCollectionsMaxLtvsParams = {
+    planType: IPlanType;
+    chain: IChain;
+};
+
+type ICollectionsWithMaxLtvs = {
+    address: string;
+    maxLtvs: {
+        currencyAddress: string;
+        maxLtv: number;
+    }[];
+}[];
+
+export type IGetCollectionsMaxLtvs = {
+    params: IGetCollectionsMaxLtvsParams;
+    result: ICollectionsWithMaxLtvs;
+};
+
 const statusType = {
     Pending: 0,
     Funded: 1,