added get stat api

src/form/dto/create-field.dto.ts

@@ -30,7 +30,7 @@ export class CreateFieldDto {
   @IsOptional()
   placeholder?: string;          
 
-  @ApiPropertyOptional({ type: [String], example: ['Very Satisfied', 'Satisfied'] })
+  @ApiPropertyOptional({ type: [String], example: ['Very Satisfied', 'Satisfied']})
   @IsArray()
   @IsString({ each: true })
   @IsOptional()

src/form/dto/create-form.dto.ts

@@ -0,0 +1,17 @@
+import { ApiPropertyOptional } from "@nestjs/swagger";
+import { IsArray, IsOptional, IsString, ValidateNested } from "class-validator";
+import { CreateFieldDto } from "./create-field.dto";
+import { Type } from "class-transformer";
+
+export class CreateFormDto {
+  @ApiPropertyOptional({ example: 'Customer Feedback Survey' })
+  @IsString()
+  name?: string;
+
+  @ApiPropertyOptional({ type: [CreateFieldDto] })
+  @ValidateNested({each:true})
+  @Type(() => CreateFieldDto)
+  @IsArray()
+  @IsOptional()
+  fields?: CreateFieldDto[];  
+}

src/form/dto/create-update.dto.ts

@@ -1,22 +0,0 @@
-import { ApiPropertyOptional } from "@nestjs/swagger";
-import { IsOptional, IsString, ValidateNested } from "class-validator";
-import { CreateFieldDto } from "./create-field.dto";
-import { Type } from "class-transformer";
-
-export class CreateUpdateDto {
-  @ApiPropertyOptional({ example: '550e8400-uuid', description: 'Form ID — omit to create a new form' })
-  @IsString()
-  @IsOptional()
-  id?: string;
-
-  @ApiPropertyOptional({ example: 'Customer Feedback Survey' })
-  @IsString()
-  @IsOptional()
-  name?: string;
-
-  @ApiPropertyOptional({ type: CreateFieldDto })
-  @ValidateNested()
-  @Type(() => CreateFieldDto)
-  @IsOptional()
-  field?: CreateFieldDto;  
-}

src/form/form.controller.ts

@@ -11,17 +11,18 @@ import {
 import { FormService } from './form.service';
 import { ApiOperation } from '@nestjs/swagger';
 import { UpdateFieldDto } from './dto/update-field.dto';
-import { CreateUpdateDto } from './dto/create-update.dto';
 import { QueryFormDto } from './dto/query-form.dto';
+import { CreateFormDto } from './dto/create-form.dto';
+import { CreateFieldDto } from './dto/create-field.dto';
 
 @Controller('form')
 export class FormController {
   constructor(private readonly formService: FormService) {}
 
-  @Post('create-or-update')
-  @ApiOperation({ summary: 'Create Empty Form, Add Field to form' })
-  async createOne(@Body() createUpdatedDto: CreateUpdateDto) {
-    return await this.formService.createOrUpdate(createUpdatedDto);
+  @Post('create-form')
+  @ApiOperation({ summary: 'Create a Form' })
+  async createOne(@Body() createFormDto: CreateFormDto) {
+    return await this.formService.createForm(createFormDto);
   }
 
   @Get()
@@ -30,17 +31,33 @@ export class FormController {
     return this.formService.findAll(query);
   }
 
+  @Get('stats')
+  @ApiOperation({ summary: 'Get Stats' })
+  async getStats() {
+    return await this.formService.getStats();
+  }
+
   @Get(':formId')
   @ApiOperation({ summary: 'Find a form' })
   async find(@Param('formId') formId: string) {
     return await this.formService.find(formId);
   }
+
   @Get(':formId/interface')
-  @ApiOperation({summary:'Get interface for the form provided by llm'})
-  async getInterface(@Param('formId') formId:string){
+  @ApiOperation({ summary: 'Get interface for the form provided by llm' })
+  async getInterface(@Param('formId') formId: string) {
     return await this.formService.findInterface(formId);
   }
 
+  @Patch(':formId/field')
+  @ApiOperation({ summary: 'Add a field to a form' })
+  async addField(
+    @Param('formId') formId: string,
+    @Body() createFieldDto: CreateFieldDto,
+  ) {
+    return await this.formService.addField(formId, createFieldDto);
+  }
+
   @Patch(':id/fields/:fieldId')
   @ApiOperation({ summary: 'update a field in a form' })
   async updateField(

src/form/form.service.ts

@@ -1,14 +1,19 @@
-import { Injectable, NotFoundException, ServiceUnavailableException } from '@nestjs/common';
+import {
+  Injectable,
+  NotFoundException,
+  ServiceUnavailableException,
+} from '@nestjs/common';
 import { InjectModel } from '@nestjs/mongoose';
 import { Form, FormDocument, Status } from './schemas/form.schema';
 import { Model } from 'mongoose';
 import { v4 as uuidv4 } from 'uuid';
 import { UpdateFieldDto } from './dto/update-field.dto';
-import { CreateUpdateDto } from './dto/create-update.dto';
 import { QueryFormDto } from './dto/query-form.dto';
 import { FormQueryBuilder } from './helpers/form-query.builder';
 import { PaginatedResponse } from 'src/interfaces/paginated-response.interface';
 import { LlmService } from 'src/common/services/llm.service';
+import { CreateFormDto } from './dto/create-form.dto';
+import { CreateFieldDto } from './dto/create-field.dto';
 
 // Reusable projections
 const LIST_PROJECTION = {
@@ -28,28 +33,21 @@ export class FormService {
     private llmService: LlmService,
   ) {}
 
-  async createOrUpdate(dto: CreateUpdateDto): Promise<Form> {
-    if (!dto.id) {
-      return this.formModel.create({
-        id: uuidv4(),
-        name: dto.name ?? 'Untitled Form',
-      });
-    }
-
-    const form = await this.formModel.findOne({ id: dto.id });
-    if (!form) throw new NotFoundException(`Form ${dto.id} not found`);
-
-    if (!dto.field) return form; // nothing to add, return as-is
-
-    const newField = { id: uuidv4(), ...dto.field };
+  async createForm(formDto: CreateFormDto): Promise<Form> {
+    const form = await this.formModel.create({
+      id: uuidv4(),
+      ...formDto,
+    });
+    return form;
+  }
 
+  async addField(formId: string, fieldDto: CreateFieldDto): Promise<Form> {
     const updatedForm = await this.formModel.findOneAndUpdate(
-      { id: dto.id },
-      { $push: { fields: newField } },
-      { new: true, projection: DETAIL_PROJECTION },
+      { id: formId },
+      { $push: { fields: fieldDto } },
+      { returnDocument: 'after' }, //as {new:true} will be deprecated
     );
-
-    if (!updatedForm) throw new NotFoundException(`Form ${dto.id} not found`);
+    if (!updatedForm) throw new NotFoundException(`Form ${formId} not found`);
     return updatedForm;
   }
 
@@ -95,22 +93,51 @@ export class FormService {
     return form;
   }
 
-  async findInterface(formId: string): Promise<string> {
-  const form = await this.formModel
-    .findOne({ id: formId, deletedAt: null })
-    .select(DETAIL_PROJECTION)
-    .exec();
-
-  if (!form) throw new NotFoundException(`Form ${formId} not found`);
-
-  try{
-    let tsInference=await this.llmService.generateFormInterface(form)
-    return tsInference
-  }catch(err){
-    throw new ServiceUnavailableException('llm down')
+  async getStats() {
+    const [totalForms, totalFields, fieldTypeBreakdown, formStatusBreakdown] =
+      await Promise.all([
+        this.formModel.countDocuments(),
+        this.formModel.aggregate([
+          { $project: { fieldCount: { $size: '$fields' } } },
+          { $group: { _id: null, total: { $sum: '$fieldCount' } } },
+        ]),
+        this.formModel.aggregate([
+          { $unwind: '$fields' },
+          { $group: { _id: '$fields.keyType', count: { $sum: 1 } } },
+        ]),
+        this.formModel.aggregate([
+          {
+            $group: {
+              _id: {
+                $cond: {
+                  if: { $ifNull: ['$deletedAt', false] },
+                  then: 'deleted',
+                  else: 'active',
+                },
+              },
+              count: { $sum: 1 },
+            },
+          },
+        ]),
+      ]);
+    return { totalForms, totalFields, fieldTypeBreakdown, formStatusBreakdown };
   }
 
-}
+  async findInterface(formId: string): Promise<string> {
+    const form = await this.formModel
+      .findOne({ id: formId, deletedAt: null })
+      .select(DETAIL_PROJECTION)
+      .exec();
+
+    if (!form) throw new NotFoundException(`Form ${formId} not found`);
+
+    try {
+      let tsInference = await this.llmService.generateFormInterface(form);
+      return tsInference;
+    } catch (err) {
+      throw new ServiceUnavailableException('llm down');
+    }
+  }
 
   async updateField(
     formId: string,
@@ -127,7 +154,7 @@ export class FormService {
       { id: formId },
       { $set: setPayload },
       {
-        new: true,
+        returnDocument: 'after',
         arrayFilters: [{ 'elem.id': fieldId }],
         projection: DETAIL_PROJECTION,
       },
@@ -140,7 +167,7 @@ export class FormService {
     const form = await this.formModel.findOneAndUpdate(
       { id: formId },
       { $pull: { fields: { id: fieldId } } },
-      { new: true, projection: DETAIL_PROJECTION },
+      { returnDocument: 'after', projection: DETAIL_PROJECTION },
     );
     if (!form) throw new NotFoundException(`Form ${formId} not found`);
     return form;
@@ -154,7 +181,7 @@ export class FormService {
           deletedAt: new Date(),
         },
       },
-      { new: true, projection: DETAIL_PROJECTION },
+      { returnDocument: 'after', projection: DETAIL_PROJECTION },
     );
 
     if (!form) throw new NotFoundException(`Form ${FormId} not found`);
@@ -169,7 +196,7 @@ export class FormService {
           deletedAt: null,
         },
       },
-      { new: true, projection: DETAIL_PROJECTION },
+      { returnDocument: 'after', projection: DETAIL_PROJECTION },
     );
     if (!form) throw new NotFoundException(`Form ${FormId} not found`);
     return form;

src/form/schemas/field.schema.ts

@@ -1,6 +1,6 @@
 import { Prop, Schema, SchemaFactory } from '@nestjs/mongoose';
 import { Document } from 'mongoose';
-
+import { v4 as uuidv4 } from 'uuid';
 
 import { PARENT_TYPE_KEYS, INPUT_SUB_TYPE_KEYS } from '../types/field.type';
 import type { ParentKeyType, InputSubType } from '../types/field.type';
@@ -9,13 +9,13 @@ export type FieldDocument = Field & Document;
 
 @Schema({ timestamps: true })
 export class Field {
-  @Prop({ required: true, unique:true })
+  @Prop({ required: true, unique: true, default: () => uuidv4() })
   id!: string;
 
-  @Prop({ required: true, enum: PARENT_TYPE_KEYS })  
+  @Prop({ required: true, enum: PARENT_TYPE_KEYS })
   keyType!: ParentKeyType;
 
-  @Prop({ required: false, enum: INPUT_SUB_TYPE_KEYS })  
+  @Prop({ required: false, enum: INPUT_SUB_TYPE_KEYS })
   keySubType?: InputSubType;
 
   @Prop({ required: true })
@@ -27,11 +27,11 @@ export class Field {
   @Prop({ required: false })
   placeholder?: string;
 
-  @Prop({ required: false })
+  @Prop({ required: false, default: undefined })
   options?: string[];
 
   @Prop({ required: true, default: false })
   required!: boolean;
 }
 
-export const FieldSchema = SchemaFactory.createForClass(Field);
+export const FieldSchema = SchemaFactory.createForClass(Field);