From d84908248257d7691e66572e01ba2e5d37223d8d Mon Sep 17 00:00:00 2001
From: Dan Percic <dan@devplant.ro>
Date: Wed, 27 Jul 2022 15:35:59 +0300
Subject: [PATCH] add api path interceptor

---
 src/lib/common-ui.module.ts              | 13 +++++++++++--
 src/lib/services/api-path.interceptor.ts | 21 +++++++++++++++++++++
 src/lib/services/index.ts                |  1 +
 3 files changed, 33 insertions(+), 2 deletions(-)
 create mode 100644 src/lib/services/api-path.interceptor.ts

diff --git a/src/lib/common-ui.module.ts b/src/lib/common-ui.module.ts
index a0b52f2..7f9e883 100644
--- a/src/lib/common-ui.module.ts
+++ b/src/lib/common-ui.module.ts
@@ -33,8 +33,9 @@ import { DragDropFileUploadDirective } from './upload-file/drag-drop-file-upload
 import { MatProgressBarModule } from '@angular/material/progress-bar';
 import { ConfirmationDialogComponent } from './dialog';
 import { MatTooltipModule } from '@angular/material/tooltip';
-import { BaseConfigService, BaseUserPreferenceService } from './services';
+import { ApiPathInterceptor, BaseConfigService, BaseUserPreferenceService } from './services';
 import { DefaultUserPreferenceService } from './services/default-user-preference.service';
+import { HTTP_INTERCEPTORS } from '@angular/common/http';
 
 const matModules = [
     MatIconModule,
@@ -96,7 +97,15 @@ export class CommonUiModule extends ModuleWithOptions {
 
         return {
             ngModule: CommonUiModule,
-            providers: [userPreferenceService, configServiceProviders],
+            providers: [
+                userPreferenceService,
+                configServiceProviders,
+                {
+                    provide: HTTP_INTERCEPTORS,
+                    multi: true,
+                    useClass: ApiPathInterceptor,
+                },
+            ],
         };
     }
 
diff --git a/src/lib/services/api-path.interceptor.ts b/src/lib/services/api-path.interceptor.ts
new file mode 100644
index 0000000..e10395e
--- /dev/null
+++ b/src/lib/services/api-path.interceptor.ts
@@ -0,0 +1,21 @@
+import { HttpEvent, HttpHandler, HttpInterceptor, HttpRequest } from '@angular/common/http';
+import { inject, Injectable } from '@angular/core';
+import { Observable } from 'rxjs';
+import { getConfig } from './base-config.service';
+import { BASE_HREF } from '../utils';
+
+@Injectable()
+export class ApiPathInterceptor implements HttpInterceptor {
+    readonly #config = getConfig();
+    readonly #baseHref = inject(BASE_HREF);
+
+    intercept(req: HttpRequest<unknown>, next: HttpHandler): Observable<HttpEvent<unknown>> {
+        if (!req.url.startsWith('/assets')) {
+            const apiUrl = `${this.#config.API_URL}${req.url}`;
+            return next.handle(req.clone({ url: apiUrl }));
+        }
+
+        const url = this.#baseHref + req.url;
+        return next.handle(req.clone({ url }));
+    }
+}
diff --git a/src/lib/services/index.ts b/src/lib/services/index.ts
index 0e219ae..8549ef8 100644
--- a/src/lib/services/index.ts
+++ b/src/lib/services/index.ts
@@ -8,3 +8,4 @@ export * from './entities-map.service';
 export * from './base-user-preference.service';
 export * from './language.service';
 export * from './base-config.service';
+export * from './api-path.interceptor';