added identity module

Author: KDwevedi

.gitignore

@@ -36,6 +36,7 @@ lerna-debug.log*
 !.vscode/launch.json
 !.vscode/extensions.json
 .env
+.env.archive
 secret.json
 pdfs
 data

src/app.module.ts

@@ -9,6 +9,7 @@ import { SchemaModule } from './schema/schema.module';
 import { TemplateModule } from './template/template.module';
 import { CertificateModule } from './certificate/certificate.module';
 import { PrismaModule } from 'src/prisma/prisma.module';
+import { IdentityModule } from './identity/identity.module';
 import configuration from './config/configuration';
 
 @Module({
@@ -23,6 +24,7 @@ import configuration from './config/configuration';
     TemplateModule,
     CertificateModule,
     PrismaModule,
+    IdentityModule,
   ],
   controllers: [AppController, SchemaController],
   providers: [AppService],

src/identity/config.json

@@ -0,0 +1,25 @@
+{
+    "content": [
+      {
+        "alsoKnownAs": [
+          "C4GT",
+          "https://www.codeforgovtech.in/"
+        ],
+        "services": [
+          {
+            "id": "C4GT",
+            "type": "IdentityHub",
+            "serviceEndpoint": {
+              "@context": "schema.c4gt.acknowledgment",
+              "@type": "UserServiceEndpoint",
+              "instance": [
+                "https://www.codeforgovtech.in"
+              ]
+            }
+          }
+        ],
+        "method": "C4GT"
+      }
+    ]
+  }
+  

src/identity/identity.controller.spec.ts

@@ -0,0 +1,18 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { IdentityController } from './identity.controller';
+
+describe('IdentityController', () => {
+  let controller: IdentityController;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      controllers: [IdentityController],
+    }).compile();
+
+    controller = module.get<IdentityController>(IdentityController);
+  });
+
+  it('should be defined', () => {
+    expect(controller).toBeDefined();
+  });
+});

src/identity/identity.controller.ts

@@ -0,0 +1,17 @@
+import { Controller, Post, Get, Body, Param } from '@nestjs/common';
+import { IdentityService } from './identity.service';
+
+@Controller('identity')
+export class IdentityController {
+  constructor(private readonly identityService: IdentityService) {}
+
+  @Post('generate')
+  async generateIdentity() {
+    return this.identityService.generateIdentity();
+  }
+
+  @Get('resolve/:did')
+  async resolveIdentity(@Param('did') did: string) {
+    return this.identityService.resolveIdentity(did);
+  }
+}

src/identity/identity.module.ts

@@ -0,0 +1,11 @@
+import { Module } from '@nestjs/common';
+import { IdentityService } from './identity.service';
+import { IdentityController } from './identity.controller';
+import { HttpModule } from '@nestjs/axios';
+
+@Module({
+  imports: [HttpModule],
+  providers: [IdentityService],
+  controllers: [IdentityController]
+})
+export class IdentityModule {}

src/identity/identity.service.spec.ts

@@ -0,0 +1,18 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { IdentityService } from './identity.service';
+
+describe('IdentityService', () => {
+  let service: IdentityService;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [IdentityService],
+    }).compile();
+
+    service = module.get<IdentityService>(IdentityService);
+  });
+
+  it('should be defined', () => {
+    expect(service).toBeDefined();
+  });
+});

src/identity/identity.service.ts

@@ -0,0 +1,52 @@
+import { Injectable } from '@nestjs/common';
+import { HttpService } from '@nestjs/axios';
+import { ConfigService } from '@nestjs/config';
+import axios from 'axios';
+import * as fs from 'fs';
+import * as path from 'path';
+
+interface RCWIdentityConfig {
+  baseUrl: string;
+}
+
+@Injectable()
+export class IdentityService {
+  private readonly config;
+
+  constructor(
+    private readonly configService: ConfigService, 
+    private readonly httpService: HttpService
+  ) {
+    this.config = this.configService.get<RCWIdentityConfig>('identityService');
+  }
+
+  async generateIdentity() {
+    try {
+      const configPath = path.resolve(__dirname, '../config.json');
+      const requestBody = JSON.parse(fs.readFileSync(configPath, 'utf8'));
+
+      const generateUrl = `${this.config.baseUrl}/did/generate`;
+
+      const response = await this.httpService.axiosRef.post(generateUrl, requestBody, {
+        headers: { 'Content-Type': 'application/json' },
+      });
+      return response.data;
+    } catch (error) {
+      console.error('Error generating identity:', error.message);
+      throw error.response?.data || error.message;
+    }
+  }
+
+  async resolveIdentity(did: string) {
+    try {
+      const url = `${this.config.baseUrl}/did/resolve/${did}`;
+      const response = await this.httpService.axiosRef.get(url, {
+        headers: { 'Content-Type': 'application/json' },
+      });
+      return response.data;
+    } catch (error) {
+      console.error('Error resolving identity:', error.message);
+      throw error.response?.data || error.message;
+    }
+  }
+}