src/app/dashboard/components/server/latest-invoices/latest-invoices-controller.ts

@@ -1,5 +1,5 @@
 import fetchCustomerInvoicesUsecase from "@/feature/core/customer-invoice/domain/usecase/fetch-customer-invoices-usecase";
 
-export default function latestInvoicesController() {
+export default async function latestInvoicesController() {
-    return fetchCustomerInvoicesUsecase()
+    return await fetchCustomerInvoicesUsecase()
 }

src/app/dashboard/components/server/latest-invoices/latest-invoices.tsx

@@ -2,12 +2,15 @@ import CreateRandomInvoiceContainer from '@/app/dashboard/components/client/crea
 import latestInvoicesController from '@/app/dashboard/components/server/latest-invoices/latest-invoices-controller';
 import { ArrowPathIcon } from '@heroicons/react/24/outline';
 import clsx from 'clsx';
+import { isLeft } from 'fp-ts/lib/Either';
 import Image from 'next/image';
 
 export default async function LatestInvoices() {
   const latestInvoices = await latestInvoicesController();
 
-  const invoices = latestInvoices.map((invoice, i) => {
+  if (isLeft(latestInvoices)) return <div>Error</div>
+  
+  const invoices = latestInvoices.right.map((invoice, i) => {
             return (
               <div
                 key={invoice.id}

src/feature/common/failures/base-failure.ts

@@ -4,7 +4,7 @@ import { makeFailureMessage } from "@/feature/common/failures/failure-helpers";
  * This is a class called  BaseFailure  that extends the  Error  class. It is
  *  used as a base class for creating custom failure classes.
  */
-export default abstract class BaseFailure {
+export default abstract class BaseFailure<META_DATA> {
   /* ------------------------------- Attributes ------------------------------- */
   private readonly BASE_FAILURE_MESSAGE = "failure";
 
@@ -15,8 +15,12 @@ export default abstract class BaseFailure {
   message = this.BASE_FAILURE_MESSAGE;
 
   /* -------------------------------------------------------------------------- */
-  constructor(key: string) {
+  metadata: META_DATA | undefined; 
+
+  /* -------------------------------------------------------------------------- */
+  constructor(key: string, metadata?: META_DATA) {
     this.message = makeFailureMessage(this.message, key);
+    this.metadata = metadata ?? undefined
   }
   /* -------------------------------------------------------------------------- */
 }

src/feature/common/failures/dev/arguments-failure.ts

@@ -3,10 +3,10 @@ import BaseDevFailure from "@/feature/common/failures/dev/base-dev-failure";
 /**
  * Failure for needed arguments in a method but sent wrong one
  */
-export default class ArgumentsFailure extends BaseDevFailure {
+export default class ArgumentsFailure<META_DATA> extends BaseDevFailure<META_DATA> {
   /* ------------------------------- Constructor ------------------------------ */
-  constructor() {
+  constructor(metadata?: META_DATA) {
-    super("arguments");
+    super("arguments", metadata);
   }
   /* -------------------------------------------------------------------------- */
 }

src/feature/common/failures/dev/base-dev-failure.ts

@@ -1,3 +1,3 @@
 import BaseFailure from "@/feature/common/failures/base-failure";
 
-export default abstract class BaseDevFailure extends BaseFailure {}
+export default abstract class BaseDevFailure<META_DATA> extends BaseFailure<META_DATA> {}

src/feature/common/failures/dev/dependency-failure.ts

@@ -3,8 +3,8 @@ import BaseDevFailure from "@/feature/common/failures/dev/base-dev-failure";
 /**
  * This is a failure of not having specific dependency
  */
-export default class DependencyFailure extends BaseDevFailure {
+export default class DependencyFailure<META_DATA> extends BaseDevFailure<META_DATA> {
-  constructor() {
+  constructor(metadata: META_DATA) {
-    super("DependencyFailure");
+    super("DependencyFailure", metadata);
   }
 }

src/feature/common/failures/network-failure.ts

@@ -3,10 +3,10 @@ import BaseFailure from "./base-failure";
 /**
  * Failure for HTTP response when response dosn't have base structure
  */
-export default class NetworkFailure extends BaseFailure {
+export default class NetworkFailure<META_DATA> extends BaseFailure<META_DATA> {
   /* ------------------------------- Constructor ------------------------------ */
-  constructor() {
+  constructor(metaData?: META_DATA) {
-    super("network");
+    super("network", metaData);
   }
   /* -------------------------------------------------------------------------- */
 }

src/feature/common/failures/params-failure.ts

@@ -0,0 +1,12 @@
+import BaseFailure from "./base-failure";
+
+/**
+ * Failure for params failure 
+ */
+export default class ParamsFailure<META_DATA> extends BaseFailure<META_DATA> {
+  /* ------------------------------- Constructor ------------------------------ */
+  constructor(metadata?: META_DATA) {
+    super("params", metadata);
+  }
+  /* -------------------------------------------------------------------------- */
+}

src/feature/core/customer-invoice/data/repo/customer-invoice-db-repo.ts

@@ -1,7 +1,12 @@
 import { sql } from "@/bootstrap/boundaries/db/db";
+import ApiTask from "@/feature/common/data/api-task";
+import { failureOr } from "@/feature/common/failures/failure-helpers";
+import NetworkFailure from "@/feature/common/failures/network-failure";
 import { formatCurrency } from "@/feature/common/feature-helpers";
 import CustomerInvoice from "@/feature/core/customer-invoice/domain/entity/customer-invoice";
 import CustomerInvoiceRepo from "@/feature/core/customer-invoice/domain/i-repo/customer-invoice-repo";
+import { pipe } from "fp-ts/lib/function";
+import { tryCatch } from "fp-ts/lib/TaskEither";
 import postgres from "postgres";
 
 type customerInvoiceDbResponse = {
@@ -13,23 +18,24 @@ type customerInvoiceDbResponse = {
 }
 
 export default class CustomerInvoiceDbRepo implements CustomerInvoiceRepo {
-    async fetchList(): Promise<CustomerInvoice[]> {
+    fetchList(): ApiTask<CustomerInvoice[]> {
-        try {
+        return pipe(
-            const data = await sql`
+            tryCatch(
-            SELECT invoices.amount, customers.name, customers.image_url, customers.email, invoices.id
+                async () => {
-            FROM invoices
+                    const response = await sql`
-            JOIN customers ON invoices.customer_id = customers.id
+                    SELECT invoices.amount, customers.name, customers.image_url, customers.email, invoices.id
-            ORDER BY invoices.date DESC
+                    FROM invoices
-            LIMIT 20 ` as postgres.RowList<customerInvoiceDbResponse[]>;
+                    JOIN customers ON invoices.customer_id = customers.id
-
+                    ORDER BY invoices.date DESC
-            return this.customerInvoicesDto(data)
+                    LIMIT 20 ` as postgres.RowList<customerInvoiceDbResponse[]>;
-        } catch (error) {
+                    
-            console.error('Database Error:', error);
+                    return  this.customerInvoicesDto(response)
-            throw new Error('Failed to fetch the latest invoices.');
+                },
-        }
+                (l) => failureOr(l, new NetworkFailure())
+            )
+        )
     }
 
-
     private customerInvoicesDto(dbCustomers: customerInvoiceDbResponse[]): CustomerInvoice[] {
         return  dbCustomers.map((customer) => this.customerInvoiceDto(customer));
     }

src/feature/core/customer-invoice/domain/i-repo/customer-invoice-repo.ts

@@ -1,7 +1,8 @@
+import ApiTask from "@/feature/common/data/api-task"
 import CustomerInvoice from "@/feature/core/customer-invoice/domain/entity/customer-invoice"
 
 export default interface CustomerInvoiceRepo {
-    fetchList(): Promise<CustomerInvoice[]>
+    fetchList(): ApiTask<CustomerInvoice[]>
 }
 
 export const customerInvoiceRepoKey = "customerInvoiceRepoKey"

src/feature/core/customer-invoice/domain/usecase/fetch-customer-invoices-usecase.ts

@@ -1,12 +1,12 @@
-"use server"
+import { ApiEither } from "@/feature/common/data/api-task";
 import serverDi from "@/feature/common/server-di";
 import CustomerInvoice from "@/feature/core/customer-invoice/domain/entity/customer-invoice";
 import CustomerInvoiceRepo, { customerInvoiceRepoKey } from "@/feature/core/customer-invoice/domain/i-repo/customer-invoice-repo";
 import { customerInvoiceModuleKey } from "@/feature/core/customer-invoice/invoice-module-key";
 import { connection } from "next/server";
 
-export default async function fetchCustomerInvoicesUsecase(): Promise<CustomerInvoice[]> {
+export default async function fetchCustomerInvoicesUsecase(): Promise<ApiEither<CustomerInvoice[]>> {
     connection()
     const repo = serverDi(customerInvoiceModuleKey).resolve<CustomerInvoiceRepo>(customerInvoiceRepoKey)
-    return repo.fetchList()
+    return repo.fetchList()()
 }

src/feature/core/invoice/data/repo/invoice-db-repo.ts

@@ -1,8 +1,13 @@
 import { sql } from "@/bootstrap/boundaries/db/db";
+import ApiTask from "@/feature/common/data/api-task";
+import { failureOr } from "@/feature/common/failures/failure-helpers";
+import NetworkFailure from "@/feature/common/failures/network-failure";
 import { formatCurrency } from "@/feature/common/feature-helpers";
 import InvoiceRepo from "@/feature/core/invoice/domain/i-repo/invoice-repo";
 import { InvoiceParam } from "@/feature/core/invoice/domain/param/invoice-param";
 import InvoiceStatusSummary from "@/feature/core/invoice/domain/value-object/invoice-status";
+import { pipe } from "fp-ts/lib/function";
+import { tryCatch } from "fp-ts/lib/TaskEither";
 import postgres from "postgres";
 
 type InvoiceSummaryDbResponse = {paid: string, pending: string}
@@ -13,26 +18,33 @@ export default class InvoiceDbRepo implements InvoiceRepo {
         return data.count ?? 0
     }
 
-    async createInvoice(params: InvoiceParam): Promise<string> {
+    createInvoice(params: InvoiceParam): ApiTask<string> {
-        const firstCustomerIdDb = await sql`SELECT 
+        return pipe(
-            id FROM customers 
+            tryCatch(
-            ORDER BY id DESC 
+                async () => {
-            LIMIT 1
+                    const firstCustomerIdDb = await sql`SELECT 
-        `
+                        id FROM customers 
-        const customerId = firstCustomerIdDb.at(0)?.id
+                        ORDER BY id DESC 
-        if (!customerId) throw new Error("There is no customer")
+                        LIMIT 1
-        
+                    `
-        const { amount, status } = params;
+                    const customerId = firstCustomerIdDb.at(0)?.id
-        const amountInCents = amount * 100;
+                    if (!customerId) throw new Error("There is no customer")
-        const date = new Date().toISOString().split('T')[0];
+                    
-
+                    const { amount, status } = params;
-        // Insert data into the database
+                    const amountInCents = amount * 100;
-        const result = await sql`
+                    const date = new Date().toISOString().split('T')[0];
-            INSERT INTO invoices (customer_id, amount, status, date)
+            
-            VALUES (${customerId}, ${amountInCents}, ${status}, ${date})
+                    // Insert data into the database
-            RETURNING id
+                    const result = await sql`
-        `;
+                        INSERT INTO invoices (customer_id, amount, status, date)
-        return result.at(0)?.id ?? ""
+                        VALUES (${customerId}, ${amountInCents}, ${status}, ${date})
+                        RETURNING id
+                    `;
+                    return result.at(0)?.id ?? ""
+                },
+                (l) => failureOr(l, new NetworkFailure(l as Error))
+            ),
+        )
     }
 
     async fetchInvoicesStatusSummary(): Promise<InvoiceStatusSummary> {

src/feature/core/invoice/domain/i-repo/invoice-repo.ts

@@ -1,10 +1,11 @@
+import ApiTask from "@/feature/common/data/api-task"
 import { InvoiceParam } from "@/feature/core/invoice/domain/param/invoice-param"
 import InvoiceStatusSummary from "@/feature/core/invoice/domain/value-object/invoice-status"
 
 export default interface InvoiceRepo {
     fetchAllInvoicesAmount(): Promise<number>
     fetchInvoicesStatusSummary(): Promise<InvoiceStatusSummary>
-    createInvoice(params: InvoiceParam): Promise<string>
+    createInvoice(params: InvoiceParam): ApiTask<string>
 }
 
 export const invoiceRepoKey = "invoiceRepoKey"

src/feature/core/invoice/domain/usecase/create-invoice-usecase.ts

@@ -1,19 +1,24 @@
 "use server"
+import { ApiEither } from "@/feature/common/data/api-task";
+import ParamsFailure from "@/feature/common/failures/params-failure";
 import serverDi from "@/feature/common/server-di";
 import InvoiceRepo, { invoiceRepoKey } from "@/feature/core/invoice/domain/i-repo/invoice-repo";
 import { InvoiceParam, invoiceSchema } from "@/feature/core/invoice/domain/param/invoice-param";
 import { invoiceModuleKey } from "@/feature/core/invoice/invoice-module-key";
+import { pipe } from "fp-ts/lib/function";
+import { chain, fromNullable, left, map, right } from "fp-ts/lib/TaskEither";
 
-export default async function createInvoiceUsecase(params: InvoiceParam): Promise<string | {errorMessage: string}> {
+export default async function createInvoiceUsecase(params: InvoiceParam): Promise<ApiEither<string>> {
-    const isParamsValid = invoiceSchema.safeParse(params)
-
-    if (!isParamsValid) {
-        return {
-            errorMessage: "Please pass correct params"
-        }
-    }
     const repo = serverDi(invoiceModuleKey).resolve<InvoiceRepo>(invoiceRepoKey)
 
-    return repo.createInvoice(params)
+    return pipe(
-
+        fromNullable(new ParamsFailure())(params),
+        map((params) => invoiceSchema.safeParse(params)),
+        chain((params) => {
+            const isParamsValid = invoiceSchema.safeParse(params)
+            if (!isParamsValid.success) left(new ParamsFailure())
+            return right(params.data as InvoiceParam)
+        }),
+        chain((params) => repo.createInvoice(params))
+    )()
 }