Cache YNAB data responses

2020-12-10 22:13:20 -06:00
commit eb07185d6e
5 changed files with 268 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,2 @@
+node_modules/
+.cache/
--- a/config.js
+++ b/config.js
@@ -0,0 +1,2 @@
+exports.pat = "992a2de8f26768d1a7cbb120ad545698c8712332f1dffdc1be74a528606b8b45";
+exports.cacheDir = "./.cache"
--- a/index.js
+++ b/index.js
@@ -0,0 +1,71 @@
+const ynab = require("ynab");
+const { argv } = require('yargs');
+const fs = require('fs');
+const { pat, cacheDir } = require('./config');
+const ynabAPI = new ynab.API(pat);
+
+const ensureDataDir = async function(path) {
+    if (!fs.existsSync(path)) {
+        await fs.promises.mkdir(path);
+    }
+}
+
+const getCachedJsonOrHydrate = async function(fileName, hydrator) {
+    const filePath = `${cacheDir}/${fileName}`
+
+    if (fs.existsSync(filePath)) {
+        return JSON.parse(await fs.promises.readFile(filePath));
+    }
+
+    const data = await hydrator();
+    await ensureDataDir(cacheDir);
+    await fs.promises.writeFile(filePath, JSON.stringify(data));
+    return data;
+}
+
+const getBudgetId = async function(budgetName) {
+    const budgets = await getCachedJsonOrHydrate("budgets.json", async () => {
+        console.log("Grabbing budgets from YNAB");
+        const budgetsResponse = await ynabAPI.budgets.getBudgets();
+        return budgetsResponse.data.budgets;
+    });
+    
+    const budgetId = budgets.filter(b => { return b.name === budgetName; })[0].id;
+    return budgetId;
+}
+
+const getAccountId = async function(budgetId, accountName) {
+    let accounts = await getCachedJsonOrHydrate("accounts.json", async () => {
+        console.log("Grabbing accounts from YNAB");
+        const accountsResponse = await ynabAPI.accounts.getAccounts(budgetId);
+        return accountsResponse.data.accounts;
+    });
+
+    const accountId = accounts.filter(a => { return a.name === accountName; })[0].id;
+    return accountId;
+}
+
+const getTransactions = async function(budgetId, accountId) {
+    const date = new Date();
+    const jsonFile = `${date.getFullYear()}-${date.getMonth()}-${date.getDate()}-transactions.json`;
+    let transactions = await getCachedJsonOrHydrate(jsonFile, async () => {
+        console.log("Grabbing transactions from YNAB");
+        const transactionsResponse = await ynabAPI.transactions.getTransactionsByAccount(budgetId, accountId);
+        return transactionsResponse.data.transactions;
+    });
+
+    return transactions;
+}
+
+const main = async function(budgetName, accountName) {
+    console.log(`Looking for account '${accountName}' in budget named '${budgetName}'.`);
+
+    const budgetId = await getBudgetId(budgetName);
+    const accountId = await getAccountId(budgetId, accountName);
+    const transactions = await getTransactions(budgetId, accountId);    
+
+    console.log(transactions.length);
+    console.log(transactions[transactions.length - 1]);
+};
+
+main(argv.budgetName, argv.accountName);
--- a/package-lock.json
+++ b/package-lock.json
@@ -0,0 +1,178 @@
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+}
--- a/package.json
+++ b/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "ynabreconciler",
+  "version": "1.0.0",
+  "description": "Command line tool to reconcile YNAB account",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "yargs": "^16.0.3",
+    "ynab": "^1.20.0"
+  }
+}