some little changes for Linux

app/ygopro.component.ts

 /**
  * Created by zh99998 on 16/9/2.
  */
-import {
-    ChangeDetectorRef,
-    Component,
-    ElementRef,
-    EventEmitter,
-    Input,
-    OnDestroy,
-    OnInit,
-    Output,
-    ViewChild
-} from '@angular/core';
-import { Headers, Http } from '@angular/http';
+import {ChangeDetectorRef, Component, ElementRef, EventEmitter, Input, OnDestroy, OnInit, Output, ViewChild} from '@angular/core';
+import {Headers, Http} from '@angular/http';
 import * as child_process from 'child_process';
-import { clipboard, remote, shell } from 'electron';
+import {clipboard, remote, shell} from 'electron';
 import * as fs from 'fs-extra';
 import * as ini from 'ini';
-import { EncodeOptions } from 'ini';
+import {EncodeOptions} from 'ini';
 import * as $ from 'jquery';
 import * as path from 'path';
 import 'rxjs/Rx';
-import { ISubscription } from 'rxjs/Subscription';
-import { App } from './app';
-import { AppsService } from './apps.service';
-import { LoginService } from './login.service';
-import { SettingsService } from './settings.sevices';
+import {ISubscription} from 'rxjs/Subscription';
+import {App} from './app';
+import {AppsService} from './apps.service';
+import {LoginService} from './login.service';
+import {SettingsService} from './settings.sevices';
 import Timer = NodeJS.Timer;
 import WillNavigateEvent = Electron.WillNavigateEvent;
 
@@ -87,6 +77,7 @@ interface Options {
     lflist?: number;
     time_limit?: number;
 }
+
 export interface Points {
     exp: number;
     exp_rank: number;
@@ -155,7 +146,7 @@ export class YGOProComponent implements OnInit, OnDestroy {
         time_limit: 180
     };
 
-    room: Room = { title: this.loginService.user.username + '的房间', options: Object.assign({}, this.default_options) };
+    room: Room = {title: this.loginService.user.username + '的房间', options: Object.assign({}, this.default_options)};
 
     rooms: Room[] = [];
 
@@ -184,8 +175,23 @@ export class YGOProComponent implements OnInit, OnDestroy {
     constructor(private http: Http, private appsService: AppsService, private loginService: LoginService,
                 public settingsService: SettingsService, private ref: ChangeDetectorRef) {
         switch (process.platform) {
+            // linux should have fonts set by default
+            case 'linux':
+                this.numfont = [
+                    '/usr/share/fonts/truetype/DroidSansFallbackFull.ttf',
+                    '/usr/share/fonts/opentype/noto/NotoSansCJK-Bold.ttc',
+                    '/usr/share/fonts/google-noto-cjk/NotoSansCJK-Bold.ttc',
+                    '/usr/share/fonts/noto-cjk/NotoSansCJK-Bold.ttc',
+                ];
+                this.textfont = [
+                    '/usr/share/fonts/truetype/DroidSansFallbackFull.ttf',
+                    '/usr/share/fonts/opentype/noto/NotoSansCJK-Regular.ttc',
+                    '/usr/share/fonts/google-noto-cjk/NotoSansCJK-Regular.ttc',
+                    '/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttc',
+                ];
+                break;
             case 'darwin':
-                this.numfont = ['/System/Library/Fonts/SFNSTextCondensed-Bold.otf','/System/Library/Fonts/Supplemental/Arial.ttf'];
+                this.numfont = ['/System/Library/Fonts/SFNSTextCondensed-Bold.otf', '/System/Library/Fonts/Supplemental/Arial.ttf'];
                 this.textfont = ['/System/Library/Fonts/PingFang.ttc'];
                 break;
             case 'win32':
@@ -246,11 +252,11 @@ export class YGOProComponent implements OnInit, OnDestroy {
     refresh_replay_rooms() {
         this.replay_rooms_show = this.replay_rooms.filter((room) => {
             return ((this.replay_rooms_filter.athletic && room.arena === 'athletic') ||
-            (this.replay_rooms_filter.entertain && room.arena === 'entertain') ||
-            (this.replay_rooms_filter.single && room.options.mode === 0 && !room.arena && !room.id!.startsWith('AI#')) ||
-            (this.replay_rooms_filter.match && room.options.mode === 1 && !room.arena && !room.id!.startsWith('AI#')) ||
-            (this.replay_rooms_filter.tag && room.options.mode === 2 && !room.arena && !room.id!.startsWith('AI#')) ||
-            (this.replay_rooms_filter.windbot && room.id!.startsWith('AI#')));
+                (this.replay_rooms_filter.entertain && room.arena === 'entertain') ||
+                (this.replay_rooms_filter.single && room.options.mode === 0 && !room.arena && !room.id!.startsWith('AI#')) ||
+                (this.replay_rooms_filter.match && room.options.mode === 1 && !room.arena && !room.id!.startsWith('AI#')) ||
+                (this.replay_rooms_filter.tag && room.options.mode === 2 && !room.arena && !room.id!.startsWith('AI#')) ||
+                (this.replay_rooms_filter.windbot && room.id!.startsWith('AI#')));
         }).sort((a, b) => {
             // if (a.arena === 'athletic' && b.arena === 'athletic') {
             //     return a.dp - b.dp;
@@ -306,11 +312,11 @@ export class YGOProComponent implements OnInit, OnDestroy {
                         case 'init':
                             this.rooms_loading = false;
                             this.rooms = this.rooms.filter(room => room.server !== server).concat(
-                                message.data.map((room: Room) => Object.assign({ server: server }, room))
+                                message.data.map((room: Room) => Object.assign({server: server}, room))
                             );
                             break;
                         case 'create':
-                            this.rooms.push(Object.assign({ server: server }, message.data));
+                            this.rooms.push(Object.assign({server: server}, message.data));
                             break;
                         case 'update':
                             Object.assign(this.rooms.find(room => room.server === server && room.id === message.data.id), message.data);
@@ -467,12 +473,12 @@ export class YGOProComponent implements OnInit, OnDestroy {
     };
 
     async load_system_conf(): Promise<SystemConf> {
-        let data = await fs.readFile(this.system_conf, { encoding: 'utf-8' });
+        let data = await fs.readFile(this.system_conf, {encoding: 'utf-8'});
         return <any>ini.parse(data);
     };
 
     save_system_conf(data: SystemConf) {
-        return fs.writeFile(this.system_conf, ini.unsafe(ini.stringify(data, <EncodeOptions>{ whitespace: true })));
+        return fs.writeFile(this.system_conf, ini.unsafe(ini.stringify(data, <EncodeOptions>{whitespace: true})));
     };
 
     async join(name: string, server: Server) {
@@ -551,7 +557,7 @@ export class YGOProComponent implements OnInit, OnDestroy {
                 console.log(error);
             }
             try {
-                this.http.get('https://api.mycard.moe/ygopro/arena/user', { search: { username: this.loginService.user.username } })
+                this.http.get('https://api.mycard.moe/ygopro/arena/user', {search: {username: this.loginService.user.username}})
                     .map((response) => response.json())
                     .toPromise()
                     .then((d2) => {
@@ -629,7 +635,7 @@ export class YGOProComponent implements OnInit, OnDestroy {
         }
 
         let password = options_buffer.toString('base64') + (room.private ? this.host_password :
-                room.title!.replace(/\s/, String.fromCharCode(0xFEFF)));
+            room.title!.replace(/\s/, String.fromCharCode(0xFEFF)));
         // let room_id = crypto.createHash('md5').update(password + this.loginService.user.username).digest('base64')
         //     .slice(0, 10).replace('+', '-').replace('/', '_');
 
@@ -644,7 +650,7 @@ export class YGOProComponent implements OnInit, OnDestroy {
     copy(text: string, event: Event) {
         clipboard.writeText(text);
         const copyWrapper = $('#copy-wrapper');
-        copyWrapper.tooltip({ trigger: 'manual' })
+        copyWrapper.tooltip({trigger: 'manual'});
         copyWrapper.tooltip('show');
     }
 
@@ -701,7 +707,7 @@ export class YGOProComponent implements OnInit, OnDestroy {
             }
         }).map(response => response.json())
             .subscribe((data) => {
-                this.join(data['password'], { address: data['address'], port: data['port'] });
+                this.join(data['password'], {address: data['address'], port: data['port']});
             }, (error) => {
                 alert(`匹配失败`);
                 this.matching = matching = undefined;