add preference db

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+  "vsicons.presets.angular": true
+}

backend/src/collections/syspreferencesdb/syspreferencedb.service.ts

@@ -1,14 +1,70 @@
-import { Injectable } from '@nestjs/common';
+import { Injectable, Logger } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
+import { validate } from 'class-validator';
+import { SysPreferences } from 'picsur-shared/dist/dto/syspreferences.dto';
+import { AsyncFailable, Fail } from 'picsur-shared/dist/types';
 import { Repository } from 'typeorm';
+import { SysPreferenceDefaults } from '../../models/dto/syspreference.dto';
 import { ESysPreferenceBackend } from '../../models/entities/syspreference.entity';
 
 @Injectable()
 export class SysPreferenceService {
+  private readonly logger = new Logger('SysPreferenceService');
+
   constructor(
     @InjectRepository(ESysPreferenceBackend)
-    private usersRepository: Repository<ESysPreferenceBackend>,
+    private sysPreferenceRepository: Repository<ESysPreferenceBackend>,
   ) {}
 
+  public async setPreference(
+    key: SysPreferences,
+    value: string,
+  ): AsyncFailable<ESysPreferenceBackend> {
+    let sysPreference = new ESysPreferenceBackend();
+    sysPreference.key = key;
+    sysPreference.value = value;
 
+    const errors = await validate(sysPreference);
+    if (errors.length > 0) {
+      this.logger.warn(errors);
+      return Fail('Invalid preference');
+    }
+
+    try {
+      sysPreference = await this.sysPreferenceRepository.save(sysPreference, {
+        reload: true,
+      });
+    } catch (e: any) {
+      this.logger.warn(e);
+      return Fail('Could not save preference');
+    }
+
+    return sysPreference;
+  }
+
+  public async getPreference(
+    key: SysPreferences,
+  ): AsyncFailable<ESysPreferenceBackend> {
+    let sysPreference: ESysPreferenceBackend | undefined;
+    try {
+      sysPreference = await this.sysPreferenceRepository.findOne({
+        key,
+      });
+    } catch (e: any) {
+      this.logger.warn(e);
+      return Fail('Could not get preference');
+    }
+
+    if (!sysPreference) {
+      return this.saveDefault(key);
+    }
+
+    return sysPreference;
+  }
+
+  private async saveDefault(
+    key: SysPreferences,
+  ): AsyncFailable<ESysPreferenceBackend> {
+    return this.setPreference(key, SysPreferenceDefaults[key]());
+  }
 }

backend/src/models/dto/syspreference.dto.ts

@@ -0,0 +1,12 @@
+import { SysPreferences } from 'picsur-shared/dist/dto/syspreferences.dto';
+import { generateRandomString } from 'picsur-shared/dist/util/random';
+import Config from '../../env';
+
+export const SysPreferenceDefaults: {
+  [key in SysPreferences]: () => string;
+} = {
+  jwt_secret: () => {
+    if (Config.jwt.secret !== 'CHANGE_ME') return Config.jwt.secret;
+    return generateRandomString(32);
+  },
+};

backend/src/models/entities/syspreference.entity.ts

@@ -1,3 +1,4 @@
+import { SysPreferences } from 'picsur-shared/dist/dto/syspreferences.dto';
 import { ESysPreference } from 'picsur-shared/dist/entities/syspreference.entity';
 import { Column, Entity, PrimaryGeneratedColumn } from 'typeorm';
 
@@ -7,7 +8,7 @@ export class ESysPreferenceBackend extends ESysPreference {
   override id?: number;
 
   @Column()
-  override name: string;
+  override key: SysPreferences;
 
   @Column()
   override value: string;

shared/src/dto/mimes.dto.ts

@@ -1,4 +1,4 @@
-const tuple = <T extends string[]>(...args: T): T => args;
+import tuple from '../types/tuple';
 
 // Config
 

shared/src/dto/syspreferences.dto.ts

@@ -0,0 +1,8 @@
+import { generateRandomString } from '../util/random';
+import tuple from '../types/tuple';
+import { randomBytes } from 'crypto';
+
+const SysPreferencesTuple = tuple('jwt_secret');
+
+export const SysPreferences: string[] = SysPreferencesTuple;
+export type SysPreferences = typeof SysPreferencesTuple[number];

shared/src/entities/syspreference.entity.ts

@@ -1,11 +1,13 @@
-import { IsNotEmpty, IsOptional } from 'class-validator';
+import { IsEnum, IsNotEmpty, IsOptional } from 'class-validator';
+import { SysPreferences } from '../dto/syspreferences.dto';
 
 export class ESysPreference {
   @IsOptional()
   id?: number;
 
   @IsNotEmpty()
-  name: string;
+  @IsEnum(SysPreferences)
+  key: SysPreferences;
 
   @IsNotEmpty()
   value: string;

shared/src/types/tuple.ts

@@ -0,0 +1,3 @@
+const tuple = <T extends string[]>(...args: T): T => args;
+
+export default tuple;

shared/src/util/random.ts

@@ -0,0 +1,12 @@
+import crypto from 'crypto';
+
+const randomCharacters =
+  'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
+
+export function generateRandomString(length: number): string {
+  let out = '';
+  for (let i = 0; i < length; i++) {
+    out += randomCharacters[crypto.randomInt(0, randomCharacters.length - 1)];
+  }
+  return out;
+}