从"Blog"仓库中分离出来

admin/src/app/services/visitor/visitor.service.ts

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+import {Injectable} from '@angular/core';
+import {HttpService} from '../http.service';
+import {Page} from '../../classes/page';
+import {Visitor} from '../../classes/visitor';
+
+@Injectable({
+    providedIn: 'root'
+})
+export class VisitorService {
+
+    constructor(public http: HttpService) {
+    }
+
+    public pageList: Page<Visitor>[] = [];
+    public currentPage: Page<Visitor>;
+
+    public dayVisit: number;
+    public totalVisitCount: number;
+
+    private ipLocationList: { ip: string, location: string }[] = [];
+
+    getVisitor(pageNum: number, pageSize: number) {
+        const observable = this.http.get(`/admin/visitor/page?count=${pageSize}&page=${pageNum}&showLocation=false`);
+        observable.subscribe(data => {
+            if (data.code === 0) {
+                this.pageList.unshift(data.result);
+                this.currentPage = data.result;
+            }
+        });
+    }
+
+    getDayVisitor() {
+        this.http.get('/dayVisitCount').subscribe(data => {
+            if (data.code === 0) {
+                this.dayVisit = data.result;
+            }
+        });
+    }
+
+    getTotalVisitorCount() {
+        this.http.get('/visitor/count').subscribe(data => {
+            this.totalVisitCount = data.result;
+        });
+    }
+
+
+    getIp(ip: string) {
+        const location = this.exist(ip);
+        if (location) {
+            return location;
+        }
+        const observable = this.http.get(`/ip/${ip}`);
+        observable.subscribe(data => {
+            if (data.code === 0) {
+                this.ipLocationList.unshift(data.result);
+            }
+        });
+        return observable;
+    }
+
+    getLocalIp() {
+        return this.http.get('/ip');
+    }
+
+    private exist(ip): string {
+        if (this.ipLocationList.length === 0) {
+            return null;
+        }
+        // tslint:disable-next-line:prefer-for-of
+        for (let i = 0; i < this.ipLocationList.length; i++) {
+            if (this.ipLocationList[i].ip === ip) {
+                return this.ipLocationList[i].location;
+            }
+        }
+    }
+}