refactor: app modules, main.ts (#8156)

server/src/services/api.service.ts

@@ -0,0 +1,116 @@
+import { Injectable } from '@nestjs/common';
+import { Cron, CronExpression, Interval } from '@nestjs/schedule';
+import { NextFunction, Request, Response } from 'express';
+import { readFileSync } from 'node:fs';
+import { join } from 'node:path';
+import { ONE_HOUR, WEB_ROOT } from 'src/constants';
+import { AuthService } from 'src/services/auth.service';
+import { DatabaseService } from 'src/services/database.service';
+import { JobService } from 'src/services/job.service';
+import { ServerInfoService } from 'src/services/server-info.service';
+import { SharedLinkService } from 'src/services/shared-link.service';
+import { StorageService } from 'src/services/storage.service';
+import { SystemConfigService } from 'src/services/system-config.service';
+import { ImmichLogger } from 'src/utils/logger';
+import { OpenGraphTags } from 'src/utils/misc';
+
+const render = (index: string, meta: OpenGraphTags) => {
+  const tags = `
+    <meta name="description" content="${meta.description}" />
+
+    <!-- Facebook Meta Tags -->
+    <meta property="og:type" content="website" />
+    <meta property="og:title" content="${meta.title}" />
+    <meta property="og:description" content="${meta.description}" />
+    ${meta.imageUrl ? `<meta property="og:image" content="${meta.imageUrl}" />` : ''}
+
+    <!-- Twitter Meta Tags -->
+    <meta name="twitter:card" content="summary_large_image" />
+    <meta name="twitter:title" content="${meta.title}" />
+    <meta name="twitter:description" content="${meta.description}" />
+
+    ${meta.imageUrl ? `<meta name="twitter:image" content="${meta.imageUrl}" />` : ''}`;
+
+  return index.replace('<!-- metadata:tags -->', tags);
+};
+
+@Injectable()
+export class ApiService {
+  private logger = new ImmichLogger(ApiService.name);
+
+  constructor(
+    private authService: AuthService,
+    private configService: SystemConfigService,
+    private jobService: JobService,
+    private serverService: ServerInfoService,
+    private sharedLinkService: SharedLinkService,
+    private storageService: StorageService,
+    private databaseService: DatabaseService,
+  ) {}
+
+  @Interval(ONE_HOUR.as('milliseconds'))
+  async onVersionCheck() {
+    await this.serverService.handleVersionCheck();
+  }
+
+  @Cron(CronExpression.EVERY_DAY_AT_MIDNIGHT)
+  async onNightlyJob() {
+    await this.jobService.handleNightlyJobs();
+  }
+
+  async init() {
+    await this.databaseService.init();
+    await this.configService.init();
+    this.storageService.init();
+    await this.serverService.init();
+    this.logger.log(`Feature Flags: ${JSON.stringify(await this.serverService.getFeatures(), null, 2)}`);
+  }
+
+  ssr(excludePaths: string[]) {
+    let index = '';
+    try {
+      index = readFileSync(join(WEB_ROOT, 'index.html')).toString();
+    } catch {
+      this.logger.warn('Unable to open `www/index.html, skipping SSR.');
+    }
+
+    return async (request: Request, res: Response, next: NextFunction) => {
+      if (
+        request.url.startsWith('/api') ||
+        request.method.toLowerCase() !== 'get' ||
+        excludePaths.some((item) => request.url.startsWith(item))
+      ) {
+        return next();
+      }
+
+      const targets = [
+        {
+          regex: /^\/share\/(.+)$/,
+          onMatch: async (matches: RegExpMatchArray) => {
+            const key = matches[1];
+            const auth = await this.authService.validateSharedLink(key);
+            return this.sharedLinkService.getMetadataTags(auth);
+          },
+        },
+      ];
+
+      let html = index;
+
+      try {
+        for (const { regex, onMatch } of targets) {
+          const matches = request.url.match(regex);
+          if (matches) {
+            const meta = await onMatch(matches);
+            if (meta) {
+              html = render(index, meta);
+            }
+
+            break;
+          }
+        }
+      } catch {}
+
+      res.type('text/html').header('Cache-Control', 'no-store').send(html);
+    };
+  }
+}