Added delete dns rewrite rule

lib/l10n/app_en.arb

@@ -384,5 +384,9 @@
     "loadingRewriteRules": "Loading rewrite rules...",
     "rewriteRulesNotLoaded": "DNS rewrite rules could not be loaded.",
     "noRewriteRules": "No DNS rewrite rules",
-    "answer": "Answer"
+    "answer": "Answer",
+    "deleteDnsRewrite": "Delete DNS rewrite",
+    "deleteDnsRewriteMessage": "Are you sure you want to delete this DNS rewrite? This action cannot be undone.",
+    "dnsRewriteRuleDeleted": "DNS rewrite rule deleted successfully",
+    "dnsRewriteRuleNotDeleted": "The DNS rewrite rule could not be deleted"
 }

lib/l10n/app_es.arb

@@ -384,5 +384,9 @@
     "loadingRewriteRules": "Cargando reescrituras DNS...",
     "rewriteRulesNotLoaded": "No se han podido cargar las reescrituras DNS.",
     "noRewriteRules": "No hay reescrituras DNS.",
-    "answer": "Respuesta"
+    "answer": "Respuesta",
+    "deleteDnsRewrite": "Eliminar reescritura DNS",
+    "deleteDnsRewriteMessage": "¿Estás seguro que deseas eliminar esta reescritura DNS? Esta acción no se puede deshacer.",
+    "dnsRewriteRuleDeleted": "Reescritura DNS eliminada correctamente",
+    "dnsRewriteRuleNotDeleted": "La reescritura DNS no pudo ser eliminada"
 }

lib/screens/settings/dns_rewrites/delete_dns_rewrite.dart

@@ -0,0 +1,44 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_gen/gen_l10n/app_localizations.dart';
+
+class DeleteDnsRewrite extends StatelessWidget {
+  final void Function() onConfirm;
+
+  const DeleteDnsRewrite({
+    Key? key,
+    required this.onConfirm
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      title: Column(
+        children: [
+          const Icon(
+            Icons.delete_rounded,
+            size: 26,
+          ),
+          const SizedBox(height: 20),
+          Text(
+            AppLocalizations.of(context)!.deleteDnsRewrite,
+            textAlign: TextAlign.center,
+          )
+        ],
+      ),
+      content: Text(AppLocalizations.of(context)!.deleteDnsRewriteMessage),
+      actions: [
+        TextButton(
+          onPressed: () => Navigator.pop(context), 
+          child: Text(AppLocalizations.of(context)!.cancel)
+        ),
+        TextButton(
+          onPressed: () {
+            onConfirm();
+            Navigator.pop(context);
+          }, 
+          child: Text(AppLocalizations.of(context)!.confirm)
+        ),
+      ],
+    );
+  }
+}

lib/screens/settings/dns_rewrites/dns_rewrites.dart

@@ -1,10 +1,17 @@
+// ignore_for_file: use_build_context_synchronously
+
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 
+import 'package:adguard_home_manager/screens/settings/dns_rewrites/delete_dns_rewrite.dart';
+
 import 'package:adguard_home_manager/services/http_requests.dart';
 import 'package:adguard_home_manager/providers/app_config_provider.dart';
+import 'package:adguard_home_manager/functions/snackbar.dart';
+import 'package:adguard_home_manager/models/rewrite_rules.dart';
 import 'package:adguard_home_manager/providers/servers_provider.dart';
+import 'package:adguard_home_manager/classes/process_modal.dart';
 
 class DnsRewrites extends StatelessWidget {
   const DnsRewrites({Key? key}) : super(key: key);
@@ -36,7 +43,7 @@ class DnsRewritesWidget extends StatefulWidget {
 }
 
 class _DnsRewritesWidgetState extends State<DnsRewritesWidget> {
-  void fetchData() async {
+  Future fetchData() async {
     widget.serversProvider.setRewriteRulesLoadStatus(0, false);
 
     final result = await getDnsRewriteRules(server: widget.serversProvider.selectedServer!);
@@ -60,6 +67,41 @@ class _DnsRewritesWidgetState extends State<DnsRewritesWidget> {
   @override
   Widget build(BuildContext context) {
     final serversProvider = Provider.of<ServersProvider>(context);
+    final appConfigProvider = Provider.of<AppConfigProvider>(context);
+
+    void deleteDnsRewrite(RewriteRulesData rule) async {
+      ProcessModal processModal = ProcessModal(context: context);
+      processModal.open(AppLocalizations.of(context)!.deleting);
+
+      final result = await deleteDnsRewriteRule(server: serversProvider.selectedServer!, data: {
+        "domain": rule.domain,
+        "answer": rule.answer
+      });
+
+      processModal.close();
+
+      if (result['result'] == 'success') {
+        List<RewriteRulesData> data = serversProvider.rewriteRules.data!;
+        data = data.where((item) => item.domain != rule.domain).toList();
+        serversProvider.setRewriteRulesData(data);
+
+        showSnacbkar(
+          context: context, 
+          appConfigProvider: appConfigProvider,
+          label: AppLocalizations.of(context)!.dnsRewriteRuleDeleted, 
+          color: Colors.green
+        );
+      }
+      else {
+        appConfigProvider.addLog(result['log']);
+        showSnacbkar(
+          context: context, 
+          appConfigProvider: appConfigProvider,
+          label: AppLocalizations.of(context)!.dnsRewriteRuleNotDeleted, 
+          color: Colors.red
+        );
+      }
+    }
 
     Widget generateBody() {
       switch (serversProvider.rewriteRules.loadStatus) {
@@ -85,7 +127,11 @@ class _DnsRewritesWidgetState extends State<DnsRewritesWidget> {
         
         case 1:
           if (serversProvider.rewriteRules.data!.isNotEmpty) {
-            return ListView.builder(
+            return RefreshIndicator(
+              onRefresh: () async {
+                await fetchData();
+              },
+              child: ListView.builder(
                 padding: const EdgeInsets.only(top: 0),
                 itemCount: serversProvider.rewriteRules.data!.length,
                 itemBuilder: (context, index) => Container(
@@ -133,12 +179,20 @@ class _DnsRewritesWidgetState extends State<DnsRewritesWidget> {
                         ],
                       ),
                       IconButton(
-                      onPressed: () => {}, 
+                        onPressed: () => {
+                          showDialog(
+                            context: context, 
+                            builder: (context) => DeleteDnsRewrite(
+                              onConfirm: () => deleteDnsRewrite(serversProvider.rewriteRules.data![index])
+                            )
+                          )
+                        }, 
                         icon: const Icon(Icons.delete)
                       )
                     ],
                   ),
                 )
+              ),
             );
           }
           else {

lib/services/http_requests.dart

@@ -1395,3 +1395,37 @@ Future getDnsRewriteRules({
     return result;
   }
 }
+
+Future deleteDnsRewriteRule({
+  required Server server,
+  required Map<String, dynamic> data,
+}) async {
+  final result = await apiRequest(
+    urlPath: '/rewrite/delete', 
+    method: 'post',
+    server: server, 
+    body: data,
+    type: 'delete_dns_rewrite_rule'
+  );
+
+  if (result['hasResponse'] == true) {
+    if (result['statusCode'] == 200) {
+      return { 'result': 'success' };
+    }
+    else {
+      return {
+        'result': 'error',
+        'log': AppLog(
+          type: 'delete_dns_rewrite_rule', 
+          dateTime: DateTime.now(), 
+          message: 'error_code_not_expected',
+          statusCode: result['statusCode'].toString(),
+          resBody: result['body'],
+        )
+      };
+    }
+  }
+  else {
+    return result;
+  }
+}