Creating script to update hashes list

.gitignore

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+node_modules
+scripts/dappList.min.js
+scripts/updateAuthorizedHashes.min.js

scripts/updateAuthorizedHashes.js

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+const fs = require('fs');
+const path = require('path');
+
+// Step 1: Read the dappList.js file
+const dappListPath = path.join(__dirname, 'dappList.js');
+let dappListContent = fs.readFileSync(dappListPath, 'utf-8');
+
+// Step 2: Parse the dappList.js file
+const dappList = dappListContent.replace('dappsList =', '');
+const dappListJSON = eval(dappList);
+
+// Step 3: Loop through the dappList.js file
+Promise.all(dappListJSON.map(async (dapp) => {
+    const { repoLink, appLink } = dapp
+    const promises = [getRepoHash((repoLink || appLink).split('/').pop())]
+    if (appLink) {
+        promises.push(getLinkContentHash(appLink));
+    }
+    const [repoHash, appHash = null] = await Promise.all(promises)
+    const update = { repoHash }
+    if (appHash) {
+        update.appHash = appHash[0].hash
+    }
+    return {
+        ...dapp,
+        ...update
+    }
+})).then(dappListWithHashes => {
+    // Step 5: Write the string to the dappList.js file
+    const dappListWithHashesString = `dappsList = ${JSON.stringify(dappListWithHashes, null, 2)}`
+    fs.writeFileSync(dappListPath, dappListWithHashesString, 'utf-8')
+    console.log('Updated dappList.js')
+}).catch(e => {
+    console.error(e)
+})
+
+
+async function getRepoHash(repoName) {
+    if (!repoName) return null;
+    try {
+        const response = await fetch(`https://api.github.com/repos/ranchimall/${repoName}/contents/`)
+        if (!response.ok) {
+            if (response.status === 403) {
+                console.log('Github API rate limit exceeded. Try again after some time.')
+            } else {
+                console.log(`Error fetching repo contents for ${repoName}. Status: ${response.status}`)
+            }
+            return null
+        };
+        const json = await response.json()
+        const combinedSHA = json.reduce((acc, { sha }) => acc + sha, '')
+        return await calculateSHA256(new Blob([combinedSHA]))
+    } catch (e) {
+        console.error(e)
+        return null
+    }
+}
+
+async function calculateSHA256(blob) {
+    const buffer = await blob.arrayBuffer();
+    const hashBuffer = await crypto.subtle.digest('SHA-256', buffer);
+    const hashArray = Array.from(new Uint8Array(hashBuffer));
+    const hashHex = hashArray.map(byte => byte.toString(16).padStart(2, '0')).join('');
+    return hashHex;
+}
+
+/**
+ * @param { string | []} a single link or array of links 
+ */
+async function getLinkContentHash(link) {
+    try {
+        if (!link) return null
+        if (!Array.isArray(link))
+            link = [link]
+        const data = JSON.stringify({ urls: link })
+        return await (await fetch('https://utility-api.ranchimall.net/hash', {
+            headers: {
+                "Content-Type": "application/json",
+            },
+            method: "POST",
+            body: data
+        })).json()
+    } catch (e) {
+        console.error(e)
+        return null
+    }
+}