add nextjs and migrated api to next api

apps/web/src/server/exceptions.ts

@@ -0,0 +1,55 @@
+import {
+  MixanIssue,
+  MixanErrorResponse
+} from '@mixan/types'
+import { NextApiResponse } from 'next'
+
+export class HttpError extends Error {
+  public status: number
+  public message: string
+  public issues: MixanIssue[]
+
+  constructor(status: number, message: string | Error, issues?: MixanIssue[]) {
+    super(message instanceof Error ? message.message : message)
+    this.status = status
+    this.message = message instanceof Error ? message.message : message
+    this.issues = issues || []
+  }
+
+  toJson(): MixanErrorResponse  {
+    return {
+      code: this.status,
+      status: 'error',
+      message: this.message,
+      issues: this.issues.length ? this.issues : undefined,
+      stack: process.env.NODE_ENV !== 'production' ? this.stack : undefined,
+    }
+  }
+}
+
+export function createIssues(arr: Array<MixanIssue>) {
+  throw new HttpError(400, 'Issues', arr)
+}
+
+export function createError(status = 500, error: unknown | Error | string) {
+  if(error instanceof Error || typeof error === 'string') {
+    return new HttpError(status, error)
+  } 
+
+  return new HttpError(500, 'Unexpected error occured')
+}
+
+export function handleError(res: NextApiResponse, error: Error | HttpError | unknown) {
+  if(error instanceof HttpError) {
+    return res.status(error.status).json(error.toJson())
+  } 
+
+  if(error instanceof Error) {
+    const httpError = createError(500, error)
+    res.status(httpError.status).json(httpError.toJson())
+  }
+  
+  
+  const httpError = createError(500, error)
+  res.status(httpError.status).json(httpError.toJson())
+}