From b0b41fcdc5eb158f138e0e04b9eb02177c0d99bb Mon Sep 17 00:00:00 2001
From: Polianin Nikita <nikitkapolyanin@yandex.ru>
Date: Tue, 11 Jun 2024 00:25:33 +0300
Subject: [PATCH] feat: add setup/cache page

---
 src/pages/setup/cache/cache.component.ts | 69 ++++++++++++++++++++++++
 src/services/cache.service.ts            | 65 ++++++++++++++++++++++
 2 files changed, 134 insertions(+)
 create mode 100644 src/pages/setup/cache/cache.component.ts
 create mode 100644 src/services/cache.service.ts

diff --git a/src/pages/setup/cache/cache.component.ts b/src/pages/setup/cache/cache.component.ts
new file mode 100644
index 0000000..9825047
--- /dev/null
+++ b/src/pages/setup/cache/cache.component.ts
@@ -0,0 +1,69 @@
+import {Component} from '@angular/core';
+import {NavigationService} from "@service/navigation.service";
+import {FormBuilder, FormGroup, ReactiveFormsModule, Validators} from "@angular/forms";
+import SetupService from "@api/v1/setup.service";
+import {MatFormFieldModule} from "@angular/material/form-field";
+import {MatSelectModule} from "@angular/material/select";
+import {MatInput} from "@angular/material/input";
+import {MatTooltip} from "@angular/material/tooltip";
+import {MatIconButton} from "@angular/material/button";
+import {MatIcon} from "@angular/material/icon";
+
+@Component({
+  selector: 'app-cache',
+  standalone: true,
+  imports: [
+    ReactiveFormsModule,
+    MatFormFieldModule,
+    MatSelectModule,
+    MatInput,
+    MatTooltip,
+    MatIconButton,
+    MatIcon
+  ],
+  templateUrl: './cache.component.html'
+})
+
+export class CacheComponent {
+  protected databaseForm!: FormGroup;
+  protected database = '';
+  protected hidePass = true;
+
+  constructor(private navigationService: NavigationService, private formBuilder: FormBuilder, private api: SetupService) {
+    this.databaseForm = this.formBuilder.group({
+      server: ['', Validators.pattern(/^([A-Za-z0-9]+\.)+[A-Za-z]{2,}$|^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$|^([A-Fa-f0-9]{1,4}:){7}[A-Fa-f0-9]{1,4}$|^::1$/)],
+      port: ['', Validators.pattern(/^[1-9][0-9]{2,}$/)],
+      password: ['']
+    });
+
+    this.navigationService.setNextButtonState(false);
+    this.databaseForm.valueChanges.subscribe(() => {
+      this.navigationService.setNextButtonState(this.databaseForm.valid);
+    });
+  }
+
+  onDatabaseChange(selectedDatabase: string) {
+    this.database = selectedDatabase;
+
+    if (selectedDatabase === 'memcached') {
+      this.navigationService.nextButtonAction = () => {
+        return this.api.setMemcached();
+      };
+      this.navigationService.setNextButtonState(true);
+    } else {
+      this.navigationService.nextButtonAction = () => {
+        return this.api.setRedis({
+          "server": this.databaseForm.get('server')?.value,
+          "port": this.databaseForm.get('port')?.value,
+          "password": this.databaseForm.get('password')?.value
+        });
+      };
+      this.navigationService.setNextButtonState(this.databaseForm.valid);
+    }
+  }
+
+  protected togglePassword(event: MouseEvent) {
+    this.hidePass = !this.hidePass;
+    event.stopPropagation();
+  }
+}
diff --git a/src/services/cache.service.ts b/src/services/cache.service.ts
new file mode 100644
index 0000000..7409523
--- /dev/null
+++ b/src/services/cache.service.ts
@@ -0,0 +1,65 @@
+import {Injectable} from '@angular/core';
+
+interface CacheEntry<T> {
+  data: T;
+  expiry: number;
+}
+
+@Injectable({
+  providedIn: 'root'
+})
+export class CacheService {
+  private handleQuotaExceeded(): void {
+    const keys: string[] = [];
+    const expiries: number[] = [];
+
+    for (let i = 0; i < localStorage.length; i++) {
+      const key = localStorage.key(i);
+      if (!key) continue;
+
+      const cacheEntry = JSON.parse(localStorage.getItem(key) as string) as CacheEntry<any>;
+      keys.push(key);
+      expiries.push(cacheEntry.expiry);
+    }
+
+    // Удаляем самый старый элемент
+    const oldestIndex = expiries.indexOf(Math.min(...expiries));
+    localStorage.removeItem(keys[oldestIndex]);
+  }
+
+  private isQuotaExceededError(e: unknown): e is DOMException {
+    return e instanceof DOMException && (
+      e.name === 'QuotaExceededError' ||
+      e.name === 'NS_ERROR_DOM_QUOTA_REACHED'
+    );
+  }
+
+  set<T>(key: string, data: T, ttl: number): void {
+    const expiry = Date.now() + ttl;
+    const cacheEntry: CacheEntry<T> = {data, expiry};
+
+    try {
+      localStorage.setItem(key, JSON.stringify(cacheEntry));
+    } catch (e) {
+      if (this.isQuotaExceededError(e)) {
+        this.handleQuotaExceeded();
+        localStorage.setItem(key, JSON.stringify(cacheEntry));
+      } else {
+        throw e;
+      }
+    }
+  }
+
+  get<T>(key: string): T | null {
+    const cached = localStorage.getItem(key);
+    if (!cached) return null;
+
+    const cacheEntry = JSON.parse(cached) as CacheEntry<T>;
+    if (Date.now() > cacheEntry.expiry) {
+      localStorage.removeItem(key);
+      return null;
+    }
+
+    return cacheEntry.data;
+  }
+}