feat: add job for extending due dates

src/schedules/agenda.js

@@ -28,7 +28,8 @@ process.on('SIGINT', graceful)
 
 async function start() {
     await agenda.start()
-    for (const jobInfo of Object.values(jobs)) await agenda.every(jobInfo.every, jobInfo.name)
+    for (const jobInfo of Object.values(jobs))
+        if (jobInfo.every) await agenda.every(jobInfo.every, jobInfo.name)
 }
 await start()
 

src/schedules/jobs/index.js

@@ -1,5 +1,7 @@
 import loanInterests from './loan-interests.js'
+import loanDueDates from './loan-due-dates.js'
 
 export default {
-    loanInterests
+    loanInterests,
+    loanDueDates
 }

src/schedules/jobs/loan-due-dates.js

@@ -0,0 +1,36 @@
+// Schema
+import Loan from '../../models/loan.js'
+
+const name = 'extend-loan-due-dates'
+
+const handler = async (job, done) => {
+    const loans = await Loan.find({ dueDate: { $lt: new Date() } }).lean()
+
+    // Iterate through loans
+    for (const rawLoan of loans) {
+        const loan = await rawLoan
+        if (!loan.isPaidForCurrentPeriod) {
+            // TODO: Add a transaction for penalty
+            continue
+        }
+
+        // Extend due date
+        const dueDate = new Date(loan.dueDate)
+        dueDate.setDate(dueDate.getDate() + 1)
+        if (loan.paymentFrequency === 'weekly') {
+            dueDate.setDate(dueDate.getDate() + 6)
+        } else if (loan.paymentFrequency === 'monthly') {
+            dueDate.setMonth(dueDate.getMonth() + 1)
+            dueDate.setDate(dueDate.getDate() - 1)
+        }
+
+        // Update loan
+        await Loan.updateOne({ loanID: loan.loanID }, { dueDate, isPaidForCurrentPeriod: false })
+    }
+
+    done()
+}
+
+const every = '0 0 * * *' // Every 12:00 AM
+
+export default { name, handler, every }