From bffb591447cbc2ec1ec494d5042963b90c379ad5 Mon Sep 17 00:00:00 2001
From: Preschian Febryantara <preschian@users.noreply.github.com>
Date: Fri, 1 Dec 2023 17:53:46 +0700
Subject: [PATCH 1/2] chore: cache daily

---
 price/src/utils.ts | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/price/src/utils.ts b/price/src/utils.ts
index aa0102a..9624bec 100644
--- a/price/src/utils.ts
+++ b/price/src/utils.ts
@@ -3,9 +3,8 @@ export function cacheKey() {
   const year = date.getUTCFullYear();
   const month = date.getUTCMonth() + 1;
   const day = date.getUTCDate();
-  const hours = date.getUTCHours();
 
-  return `${year}-${month}-${day}-${hours}`;
+  return `${year}-${month}-${day}`;
 }
 
 // return same format as coingecko https://api.coingecko.com/api/v3/simple/price?ids=kusama&vs_currencies=usd

From 5831bc07027a81cfc2df782dcb22ad0eccbe824d Mon Sep 17 00:00:00 2001
From: Preschian Febryantara <preschian@users.noreply.github.com>
Date: Sat, 2 Dec 2023 07:47:18 +0700
Subject: [PATCH 2/2] * fix(index.ts): add missing variable declaration for
 latestPrice * fix(index.ts): add support for caching latest price for each
 chain * fix(utils.ts): add error handling for sub.id and kraken API calls

---
 price/src/index.ts |  9 ++++++++-
 price/src/utils.ts | 39 ++++++++++++++++++++++++---------------
 2 files changed, 32 insertions(+), 16 deletions(-)

diff --git a/price/src/index.ts b/price/src/index.ts
index f7b07d2..0acdcb1 100644
--- a/price/src/index.ts
+++ b/price/src/index.ts
@@ -19,6 +19,7 @@ app.on(['GET', 'OPTIONS'], '/price/:chain', async (c) => {
 
   const key = `${cacheKey()}-${token}`;
   const value = await c.env.TOKENPRICE.get(key);
+  const latestPrice = await c.env.TOKENPRICE.get(chain);
 
   console.log(key, value);
 
@@ -28,11 +29,17 @@ app.on(['GET', 'OPTIONS'], '/price/:chain', async (c) => {
       console.log(chain, usd);
 
       c.executionCtx.waitUntil(c.env.TOKENPRICE.put(key, usd));
+      c.executionCtx.waitUntil(c.env.TOKENPRICE.put(chain, usd));
 
       return c.json(formatPrice(chain, usd));
     } catch (error) {
       console.log(error);
-      return c.json({ error }, 500);
+
+      if (latestPrice) {
+        return c.json(formatPrice(chain, latestPrice));
+      }
+
+      return c.json({ error: (error as Error).message }, 500);
     }
   }
 
diff --git a/price/src/utils.ts b/price/src/utils.ts
index 9624bec..977a362 100644
--- a/price/src/utils.ts
+++ b/price/src/utils.ts
@@ -3,8 +3,9 @@ export function cacheKey() {
   const year = date.getUTCFullYear();
   const month = date.getUTCMonth() + 1;
   const day = date.getUTCDate();
+  const hours = date.getUTCHours();
 
-  return `${year}-${month}-${day}`;
+  return `${year}-${month}-${day}-${hours}`;
 }
 
 // return same format as coingecko https://api.coingecko.com/api/v3/simple/price?ids=kusama&vs_currencies=usd
@@ -29,14 +30,18 @@ export async function getPrice(
   // fetch sub.id API
   const subid = await fetch('https://sub.id/api/v1/prices');
   if (subid.status === 200) {
-    const data = await subid.json();
-    const findToken = (data as { id: string; current_price: number }[]).find(
-      (p) => p.id === chain,
-    );
-    const price = findToken?.current_price;
-
-    if (price) {
-      return price.toString();
+    try {
+      const data = (await subid.json()) as {
+        prices: { id: string; current_price: number }[];
+      };
+      const findToken = data.prices.find((p) => p.id === chain);
+      const price = findToken?.current_price;
+
+      if (price) {
+        return price.toString();
+      }
+    } catch (error) {
+      console.log('skip sub.id', error);
     }
   }
 
@@ -46,13 +51,17 @@ export async function getPrice(
     `https://api.kraken.com/0/public/Ticker?pair=${pair}`,
   );
   if (kraken.status === 200) {
-    const data = (await kraken.json()) as {
-      result: { [key: string]: { a: [string] } };
-    };
-    const price = data.result[pair].a[0];
+    try {
+      const data = (await kraken.json()) as {
+        result: { [key: string]: { a: [string] } };
+      };
+      const price = data.result[pair].a[0];
 
-    if (price) {
-      return price;
+      if (price) {
+        return price;
+      }
+    } catch (error) {
+      console.log('skip kraken', error);
     }
   }