feat(server) user-defined storage structure (#1098)

[Breaking] newly uploaded file will conform to the default structure of `{uploadLocation}/{userId}/year/year-month-day/filename.ext`

server/libs/immich-config/src/immich-config.service.ts

@@ -1,9 +1,12 @@
 import { SystemConfig, SystemConfigEntity, SystemConfigKey } from '@app/database/entities/system-config.entity';
-import { Injectable } from '@nestjs/common';
+import { BadRequestException, Injectable, Logger } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
 import * as _ from 'lodash';
+import { Subject } from 'rxjs';
 import { DeepPartial, In, Repository } from 'typeorm';
 
+export type SystemConfigValidator = (config: SystemConfig) => void | Promise<void>;
+
 const defaults: SystemConfig = Object.freeze({
   ffmpeg: {
     crf: '23',
@@ -21,10 +24,19 @@ const defaults: SystemConfig = Object.freeze({
     buttonText: 'Login with OAuth',
     autoRegister: true,
   },
+
+  storageTemplate: {
+    template: '{{y}}/{{y}}-{{MM}}-{{dd}}/{{filename}}',
+  },
 });
 
 @Injectable()
 export class ImmichConfigService {
+  private logger = new Logger(ImmichConfigService.name);
+  private validators: SystemConfigValidator[] = [];
+
+  public config$ = new Subject<SystemConfig>();
+
   constructor(
     @InjectRepository(SystemConfigEntity)
     private systemConfigRepository: Repository<SystemConfigEntity>,
@@ -34,6 +46,10 @@ export class ImmichConfigService {
     return defaults;
   }
 
+  public addValidator(validator: SystemConfigValidator) {
+    this.validators.push(validator);
+  }
+
   public async getConfig() {
     const overrides = await this.systemConfigRepository.find();
     const config: DeepPartial<SystemConfig> = {};
@@ -45,7 +61,16 @@ export class ImmichConfigService {
     return _.defaultsDeep(config, defaults) as SystemConfig;
   }
 
-  public async updateConfig(config: DeepPartial<SystemConfig> | null): Promise<void> {
+  public async updateConfig(config: SystemConfig): Promise<SystemConfig> {
+    try {
+      for (const validator of this.validators) {
+        await validator(config);
+      }
+    } catch (e) {
+      this.logger.warn(`Unable to save system config due to a validation error: ${e}`);
+      throw new BadRequestException(e instanceof Error ? e.message : e);
+    }
+
     const updates: SystemConfigEntity[] = [];
     const deletes: SystemConfigEntity[] = [];
 
@@ -70,5 +95,11 @@ export class ImmichConfigService {
     if (deletes.length > 0) {
       await this.systemConfigRepository.delete({ key: In(deletes.map((item) => item.key)) });
     }
+
+    const newConfig = await this.getConfig();
+
+    this.config$.next(newConfig);
+
+    return newConfig;
   }
 }