Initial commit

.editorconfig

+# Editor configuration, see https://editorconfig.org
+root = true
+
+[*]
+charset = utf-8
+indent_style = space
+indent_size = 2
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.ts]
+quote_type = single
+
+[*.md]
+max_line_length = off
+trim_trailing_whitespace = false

.gitignore

+# See http://help.github.com/ignore-files/ for more about ignoring files.
+
+# Compiled output
+/dist
+/tmp
+/out-tsc
+/bazel-out
+
+# Node
+/node_modules
+npm-debug.log
+yarn-error.log
+
+# IDEs and editors
+.idea/
+.project
+.classpath
+.c9/
+*.launch
+.settings/
+*.sublime-workspace
+
+# Visual Studio Code
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+.history/*
+
+# Miscellaneous
+/.angular/cache
+.sass-cache/
+/connect.lock
+/coverage
+/libpeerconnection.log
+testem.log
+/typings
+
+# System files
+.DS_Store
+Thumbs.db

README.md

+# DataHandler
+
+This project was generated with [Angular CLI](https://github.com/angular/angular-cli) version 17.0.3.
+
+## Development server
+
+Run `ng serve` for a dev server. Navigate to `http://localhost:4200/`. The application will automatically reload if you change any of the source files.
+
+## Code scaffolding
+
+Run `ng generate component component-name` to generate a new component. You can also use `ng generate directive|pipe|service|class|guard|interface|enum|module`.
+
+## Build
+
+Run `ng build` to build the project. The build artifacts will be stored in the `dist/` directory.
+
+## Running unit tests
+
+Run `ng test` to execute the unit tests via [Karma](https://karma-runner.github.io).
+
+## Running end-to-end tests
+
+Run `ng e2e` to execute the end-to-end tests via a platform of your choice. To use this command, you need to first add a package that implements end-to-end testing capabilities.
+
+## Further help
+
+To get more help on the Angular CLI use `ng help` or go check out the [Angular CLI Overview and Command Reference](https://angular.io/cli) page.

angular.json

+{
+  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
+  "version": 1,
+  "newProjectRoot": "projects",
+  "projects": {
+    "dataHandler": {
+      "projectType": "application",
+      "schematics": {
+        "@schematics/angular:component": {
+          "standalone": false
+        },
+        "@schematics/angular:directive": {
+          "standalone": false
+        },
+        "@schematics/angular:pipe": {
+          "standalone": false
+        }
+      },
+      "root": "",
+      "sourceRoot": "src",
+      "prefix": "app",
+      "architect": {
+        "build": {
+          "builder": "@angular-devkit/build-angular:application",
+          "options": {
+            "outputPath": "dist/data-handler",
+            "index": "src/index.html",
+            "browser": "src/main.ts",
+            "polyfills": [
+              "zone.js"
+            ],
+            "tsConfig": "tsconfig.app.json",
+            "assets": [
+              "src/favicon.ico",
+              "src/assets"
+            ],
+            "styles": [
+              "node_modules/primeng/resources/themes/lara-light-blue/theme.css",
+              "node_modules/primeng/resources/primeng.min.css",
+              "src/styles.css"
+            ],
+            "scripts": []
+          },
+          "configurations": {
+            "production": {
+              "budgets": [
+                {
+                  "type": "initial",
+                  "maximumWarning": "500kb",
+                  "maximumError": "1mb"
+                },
+                {
+                  "type": "anyComponentStyle",
+                  "maximumWarning": "2kb",
+                  "maximumError": "4kb"
+                }
+              ],
+              "outputHashing": "all"
+            },
+            "development": {
+              "optimization": false,
+              "extractLicenses": false,
+              "sourceMap": true
+            }
+          },
+          "defaultConfiguration": "production"
+        },
+        "serve": {
+          "builder": "@angular-devkit/build-angular:dev-server",
+          "configurations": {
+            "production": {
+              "buildTarget": "dataHandler:build:production"
+            },
+            "development": {
+              "buildTarget": "dataHandler:build:development"
+            }
+          },
+          "defaultConfiguration": "development"
+        },
+        "extract-i18n": {
+          "builder": "@angular-devkit/build-angular:extract-i18n",
+          "options": {
+            "buildTarget": "dataHandler:build"
+          }
+        },
+        "test": {
+          "builder": "@angular-devkit/build-angular:karma",
+          "options": {
+            "polyfills": [
+              "zone.js",
+              "zone.js/testing"
+            ],
+            "tsConfig": "tsconfig.spec.json",
+            "assets": [
+              "src/favicon.ico",
+              "src/assets"
+            ],
+            "styles": [
+              "src/styles.css"
+            ],
+            "scripts": []
+          }
+        }
+      }
+    }
+  },
+  "cli": {
+    "analytics": "e6092410-b030-4e98-ae0c-80695f75e73e"
+  }
+}

package.json

+{
+  "name": "data-handler",
+  "version": "0.0.0",
+  "scripts": {
+    "ng": "ng",
+    "start": "ng serve",
+    "build": "ng build",
+    "watch": "ng build --watch --configuration development",
+    "test": "ng test"
+  },
+  "private": true,
+  "dependencies": {
+    "@angular/animations": "^17.0.0",
+    "@angular/common": "^17.0.0",
+    "@angular/compiler": "^17.0.0",
+    "@angular/core": "^17.0.0",
+    "@angular/forms": "^17.0.0",
+    "@angular/platform-browser": "^17.0.0",
+    "@angular/platform-browser-dynamic": "^17.0.0",
+    "@angular/router": "^17.0.0",
+    "@rxweb/reactive-form-validators": "^13.0.1",
+    "chart.js": "^4.4.0",
+    "html2canvas": "^1.4.1",
+    "html2pdf.js": "^0.10.1",
+    "jspdf": "^2.5.1",
+    "ng2-charts": "^5.0.3",
+    "primeng": "^17.0.0-beta.1",
+    "rxjs": "~7.8.0",
+    "tinycolor2": "^1.6.0",
+    "tslib": "^2.3.0",
+    "zone.js": "~0.14.2"
+  },
+  "devDependencies": {
+    "@angular-devkit/build-angular": "^17.0.3",
+    "@angular/cli": "^17.0.3",
+    "@angular/compiler-cli": "^17.0.0",
+    "@types/jasmine": "~5.1.0",
+    "@types/tinycolor2": "^1.4.6",
+    "jasmine-core": "~5.1.0",
+    "karma": "~6.4.0",
+    "karma-chrome-launcher": "~3.2.0",
+    "karma-coverage": "~2.2.0",
+    "karma-jasmine": "~5.1.0",
+    "karma-jasmine-html-reporter": "~2.1.0",
+    "typescript": "~5.2.2"
+  }
+}

src/app/app-routing.module.ts

+import { NgModule } from '@angular/core';
+import { Routes, RouterModule } from '@angular/router';
+import {OccupationDataComponent} from "./components/occupation-data/occupation-data.component";
+import {DobDataComponent} from "./components/dob-data/dob-data.component";
+
+const routes: Routes = [
+  { path: 'occupational-data', component: OccupationDataComponent },
+  { path: 'dob-data', component: DobDataComponent },
+  { path: '', redirectTo: '/occupational-data', pathMatch: 'full' }, // Default route
+];
+
+@NgModule({
+  imports: [RouterModule.forRoot(routes)],
+  exports: [RouterModule],
+})
+export class AppRoutingModule {}

src/app/app.component.html

+<div class="card">
+  <p-tabMenu [model]="items" [activeItem]="activeItem"></p-tabMenu>
+</div>
+<br/>
+<router-outlet></router-outlet>
+

src/app/app.component.spec.ts

+import { TestBed } from '@angular/core/testing';
+import { RouterTestingModule } from '@angular/router/testing';
+import { AppComponent } from './app.component';
+
+describe('AppComponent', () => {
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [
+        RouterTestingModule
+      ],
+      declarations: [
+        AppComponent
+      ],
+    }).compileComponents();
+  });
+
+  it('should create the app', () => {
+    const fixture = TestBed.createComponent(AppComponent);
+    const app = fixture.componentInstance;
+    expect(app).toBeTruthy();
+  });
+
+  it(`should have as title 'dataHandler'`, () => {
+    const fixture = TestBed.createComponent(AppComponent);
+    const app = fixture.componentInstance;
+    expect(app.title).toEqual('dataHandler');
+  });
+
+  it('should render title', () => {
+    const fixture = TestBed.createComponent(AppComponent);
+    fixture.detectChanges();
+    const compiled = fixture.nativeElement as HTMLElement;
+    expect(compiled.querySelector('h1')?.textContent).toContain('Hello, dataHandler');
+  });
+});

src/app/app.component.ts

+import { Component, OnInit } from '@angular/core';
+import {MenuItem} from "primeng/api";
+
+@Component({
+  selector: 'app-root',
+  templateUrl: './app.component.html',
+  styleUrls: ['./app.component.css']
+})
+export class AppComponent implements OnInit{
+  title:string = 'DataPresentor';
+  items: MenuItem[] | undefined;
+  activeItem: MenuItem | undefined;
+
+  ngOnInit() {
+    this.items = [
+      { label: 'Occupation', routerLink: ['occupational-data'] },
+      { label: 'Age', routerLink: ['dob-data'] }
+    ];
+
+    this.activeItem = this.items[0];
+  }
+}

src/app/app.module.ts

+import { NgModule } from '@angular/core';
+import { BrowserModule } from '@angular/platform-browser';
+import { BrowserAnimationsModule} from '@angular/platform-browser/animations'
+import { RouterModule } from '@angular/router';
+import { FormsModule, ReactiveFormsModule } from '@angular/forms';
+import { RxReactiveFormsModule} from '@rxweb/reactive-form-validators';
+
+import { AppComponent } from './app.component';
+import { OccupationDataComponent } from './components/occupation-data/occupation-data.component';
+import { DobDataComponent } from './components/dob-data/dob-data.component';
+import {AppRoutingModule} from "./app-routing.module";
+import { HttpClientModule } from '@angular/common/http';
+import {TabMenuModule} from "primeng/tabmenu";
+import { ChartModule } from 'primeng/chart';
+import {MenuModule} from "primeng/menu";
+import { PanelModule } from 'primeng/panel';
+import { ButtonModule } from 'primeng/button';
+import { InputTextModule } from 'primeng/inputtext';
+
+@NgModule({
+  declarations: [
+    AppComponent,
+    OccupationDataComponent,
+    DobDataComponent
+  ],
+  imports: [
+    BrowserAnimationsModule,
+    BrowserModule,
+    RouterModule,
+    FormsModule,
+    ReactiveFormsModule,
+    RxReactiveFormsModule,
+    AppRoutingModule,
+    ChartModule,
+    TabMenuModule,
+    MenuModule,
+    PanelModule,
+    ButtonModule,
+    InputTextModule,
+    HttpClientModule
+  ],
+  providers: [],
+  bootstrap: [AppComponent]
+})
+export class AppModule { }

src/app/components/dob-data/dob-data.component.css

+/* search-form.component.css */
+form {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+}
+
+.search-field {
+  display: flex;
+  align-items: center;
+  margin-bottom: 10px;
+}
+
+.search-field label {
+  margin-right: 10px;
+}

src/app/components/dob-data/dob-data.component.html

+<div class="card">
+  <div class="grid m-0">
+    <div class="col-12">
+      <p-panel header="Search" [toggleable]="true" toggler="header" [transitionOptions]="'500ms ease'" [collapsed]="false">
+        <form [formGroup]="searchForm" (ngSubmit)="onSearch()">
+          <div class="search-container">
+            <div class="search-field">
+              <label for="upazilla">Upazilla:</label>
+              <input id="upazilla" formControlName="upazilla" type="text" pInputText />
+            </div>
+            <div class="search-field">
+              <label for="union">Union:</label>
+              <input id="union" formControlName="union" type="text" pInputText />
+            </div>
+            <div class="search-field">
+              <label for="area">Area:</label>
+              <input id="area" formControlName="area" type="text" pInputText />
+            </div>
+            <div class="search-field">
+              <p-button label="Search" [disabled]="!hasAnyValue" icon="pi pi-check-circle" styleClass="site-button p-button-sm" type="submit">
+              </p-button>&nbsp;&nbsp;&nbsp;
+              <p-button label="Reset" [disabled]="!hasAnyValue" icon="pi pi-times" styleClass="site-button p-button-sm" type="reset" (onClick)="resetSearchForm()">
+              </p-button>
+            </div>
+          </div>
+        </form>
+      </p-panel>
+    </div>
+  </div>
+  <br/>
+  <div class="grid m-0">
+    <div class="col-12">
+      <p-panel header="Age wise data" [toggleable]="false" toggler="header" [transitionOptions]="'500ms ease'" [collapsed]="false">
+        <button (click)="downloadAsPDF()" pButton pRipple label="Download as PDF"></button>
+        <div #pdfContent>
+          <p-chart type="bar" [data]="data" [options]="options"></p-chart>
+        </div>
+      </p-panel>
+    </div>
+  </div>
+</div>

src/app/components/dob-data/dob-data.component.spec.ts

+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { DobDataComponent } from './dob-data.component';
+
+describe('DobDataComponent', () => {
+  let component: DobDataComponent;
+  let fixture: ComponentFixture<DobDataComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [ DobDataComponent ]
+    })
+    .compileComponents();
+  });
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(DobDataComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/components/dob-data/dob-data.component.ts

+import {Component, ElementRef, OnInit, ViewChild} from '@angular/core';
+import {Person} from "../../model/person";
+import {DataLoaderService} from "../../services/data-loader.service";
+import tinycolor from 'tinycolor2';
+import {Utilities} from "../../utilities/utilities";
+import {FormGroup} from "@angular/forms";
+import {SearchModel} from "../../model/search-model";
+import {RxFormBuilder} from "@rxweb/reactive-form-validators";
+
+@Component({
+  selector: 'app-dob-data',
+  templateUrl: './dob-data.component.html',
+  styleUrls: ['./dob-data.component.css']
+})
+export class DobDataComponent implements OnInit {
+  data: any;
+  options: any;
+  people: Person[] = [];
+  ageGroupCountMap: Map<string, number> = new Map();
+  ageGroups: string[] = ['Below 18', '18-20', '21-25', '26-30', '31-40', '41-50', '51-60', '61-80', 'Above 80'];
+  searchForm!: FormGroup;
+  searchModel: SearchModel = new SearchModel();
+  @ViewChild('pdfContent') pdfContent!: ElementRef;
+
+  constructor(private dataLoader: DataLoaderService, private formBuilder:RxFormBuilder) {}
+
+  ngOnInit() {
+    this.ageGroups.forEach(ageLabel => {
+      this.ageGroupCountMap.set(ageLabel, 0);
+    });
+    this.searchForm = this.formBuilder.formGroup(this.searchModel);
+    this.loadData(null);
+  }
+
+  downloadAsPDF(){
+    Utilities.downloadAsPDF(this.pdfContent, 'AgeWise');
+  }
+
+  onSearch(){
+    if(this.searchForm.valid){
+      let searchData = <SearchModel> this.searchForm.value;
+      console.log(searchData);
+      this.loadData(searchData);
+    }
+  }
+
+  get hasAnyValue(){
+    return Object.keys(this.searchForm.value).some(k => !!this.searchForm.value[k]);
+  }
+
+  resetSearchForm(){
+    this.loadData(null);
+  }
+
+  loadData(searchObject: SearchModel | null): void {
+    this.dataLoader.getData().subscribe((data)=>{
+      this.people = data;
+      this.countPersonsByAgeGroup(searchObject);
+    });
+  }
+
+  countPersonsByAgeGroup(searchObject: SearchModel | null): void {
+    this.people.forEach(person => {
+      const age = this.calculateAge(person.date_of_birth);
+      if (age !== null) {
+        const ageGroup = this.assignToAgeGroup(age);
+        let currentCount = this.ageGroupCountMap.get(ageGroup) ?? 0;
+        this.ageGroupCountMap.set(ageGroup, currentCount + 1);
+      }
+    });
+
+    // console.log('Occupation Count Map:', this.ageGroupCountMap);
+    this.generateGraph(searchObject);
+  }
+
+  assignToAgeGroup(age: number): string {
+    if (age < 18) {
+      return this.ageGroups[0];
+    } else if (age <= 20) {
+      return this.ageGroups[1];
+    } else if (age <= 25) {
+      return this.ageGroups[2];
+    } else if (age <= 30) {
+      return this.ageGroups[3];
+    } else if (age <= 40) {
+      return this.ageGroups[4];
+    } else if (age <= 50) {
+      return this.ageGroups[5];
+    } else if (age <= 60) {
+      return this.ageGroups[6];
+    } else if (age <= 80) {
+      return this.ageGroups[7];
+    } else {
+      return this.ageGroups[8];
+    }
+  }
+
+  calculateAge(dateOfBirth: string): number | null {
+    const birthDate = new Date(dateOfBirth);
+    const currentDate = new Date();
+
+    if (isNaN(birthDate.getTime())) {
+      // Invalid date
+      return null;
+    }
+
+    const age = currentDate.getFullYear() - birthDate.getFullYear();
+
+    // Adjust age if birthday hasn't occurred yet this year
+    if (
+      currentDate.getMonth() < birthDate.getMonth() ||
+      (currentDate.getMonth() === birthDate.getMonth() && currentDate.getDate() < birthDate.getDate())
+    ) {
+      return age - 1;
+    }
+
+    return age;
+  }
+
+  generateGraph(searchObject: SearchModel | null): void {
+    const keysArray: string[] = Array.from(this.ageGroupCountMap.keys()).reverse();
+    const valuesArray: number[] = Array.from(this.ageGroupCountMap.values()).reverse();
+    var label: string = '';
+
+    if(searchObject!=null){
+      if(searchObject.upazilla!=null && searchObject.upazilla!=''){
+        label = 'Upazilla:' + searchObject.upazilla;
+      }
+      if(searchObject.union!=null && searchObject.union!=''){
+        if(label!=''){
+          label = label + ', Union:' + searchObject.union;
+        }
+        else{
+          label = 'Union:' + searchObject.union;
+        }
+      }
+      if(searchObject.area!=null && searchObject.area!=''){
+        if(label!=''){
+          label = label + ', Area:' + searchObject.area;
+        }
+        else{
+          label = 'Area:' + searchObject.area;
+        }
+      }
+    }
+
+    if(label==''){
+      label = 'Complete data';
+    }
+
+    // Generate shades of blue based on the values in dynamicData
+    const backgroundColors = Utilities.generateShades(valuesArray, '#007BFF');
+
+    const documentStyle = getComputedStyle(document.documentElement);
+    const textColor = documentStyle.getPropertyValue('--text-color');
+    const textColorSecondary = documentStyle.getPropertyValue('--text-color-secondary');
+    const surfaceBorder = documentStyle.getPropertyValue('--surface-border');
+
+    this.data = {
+      labels: keysArray,
+      datasets: [
+        {
+          label: label,
+          backgroundColor: backgroundColors,
+          data: valuesArray
+        }
+      ]
+    };
+
+    this.options = {
+      indexAxis: 'y',
+      maintainAspectRatio: false,
+      aspectRatio: 0.8,
+      plugins: {
+        legend: {
+          labels: {
+            color: textColor
+          }
+        }
+      },
+      scales: {
+        x: {
+          ticks: {
+            color: textColorSecondary,
+            precision: 0,
+            font: {
+              weight: 500
+            }
+          },
+          grid: {
+            color: surfaceBorder,
+            drawBorder: false
+          }
+        },
+        y: {
+          ticks: {
+            color: textColorSecondary
+          },
+          grid: {
+            color: surfaceBorder,
+            drawBorder: false
+          }
+        }
+      }
+    };
+  }
+}

src/app/components/occupation-data/occupation-data.component.css

+/* search-form.component.css */
+form {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+}
+
+.search-field {
+  display: flex;
+  align-items: center;
+  margin-bottom: 10px;
+}
+
+.search-field label {
+  margin-right: 10px;
+}

src/app/components/occupation-data/occupation-data.component.html

+<div class="card">
+  <div class="grid m-0">
+    <div class="col-12">
+      <p-panel header="Search" [toggleable]="true" toggler="header" [transitionOptions]="'500ms ease'" [collapsed]="false">
+        <form [formGroup]="searchForm" (ngSubmit)="onSearch()">
+          <div class="search-container">
+            <div class="search-field">
+              <label for="upazilla">Upazilla:</label>
+              <input id="upazilla" formControlName="upazilla" type="text" pInputText />
+            </div>
+            <div class="search-field">
+              <label for="union">Union:</label>
+              <input id="union" formControlName="union" type="text" pInputText />
+            </div>
+            <div class="search-field">
+              <label for="area">Area:</label>
+              <input id="area" formControlName="area" type="text" pInputText />
+            </div>
+            <div class="search-field">
+              <p-button label="Search" [disabled]="!hasAnyValue" icon="pi pi-check-circle" styleClass="site-button p-button-sm" type="submit">
+              </p-button>&nbsp;&nbsp;&nbsp;
+              <p-button label="Reset" [disabled]="!hasAnyValue" icon="pi pi-times" styleClass="site-button p-button-sm" type="reset" (onClick)="resetSearchForm()">
+              </p-button>
+            </div>
+          </div>
+        </form>
+      </p-panel>
+    </div>
+  </div>
+  <br/>
+  <div class="grid m-0">
+    <div class="col-12">
+      <p-panel header="Occupation wise data" [toggleable]="false" toggler="header" [transitionOptions]="'500ms ease'" [collapsed]="false">
+        <button (click)="downloadAsPDF()" pButton pRipple label="Download as PDF"></button>
+        <div #pdfContent>
+          <p-chart type="bar" [data]="data" [options]="options"></p-chart>
+        </div>
+      </p-panel>
+    </div>
+  </div>
+</div>

src/app/components/occupation-data/occupation-data.component.spec.ts

+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { OccupationDataComponent } from './occupation-data.component';
+
+describe('OccupationDataComponent', () => {
+  let component: OccupationDataComponent;
+  let fixture: ComponentFixture<OccupationDataComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [ OccupationDataComponent ]
+    })
+    .compileComponents();
+  });
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(OccupationDataComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/components/occupation-data/occupation-data.component.ts

+import { Component, ElementRef, ViewChild, OnInit } from '@angular/core';
+import {DataLoaderService} from "../../services/data-loader.service";
+import {Person} from "../../model/person";
+import {SearchModel} from "../../model/search-model";
+import { FormGroup } from '@angular/forms';
+import { RxFormBuilder } from '@rxweb/reactive-form-validators';
+import {Utilities} from "../../utilities/utilities";
+
+
+@Component({
+  selector: 'app-occupation-data',
+  templateUrl: './occupation-data.component.html',
+  styleUrls: ['./occupation-data.component.css']
+})
+export class OccupationDataComponent implements OnInit {
+  data: any;
+  options: any;
+  people: Person[] = [];
+  occupationCountMap: Map<string, number> = new Map();
+  searchForm!: FormGroup;
+  searchModel: SearchModel = new SearchModel();
+  @ViewChild('pdfContent') pdfContent!: ElementRef;
+
+  constructor(private dataLoader: DataLoaderService, private formBuilder:RxFormBuilder) {}
+
+  ngOnInit() {
+    this.searchForm = this.formBuilder.formGroup(this.searchModel);
+    this.loadData(null);
+  }
+
+  downloadAsPDF(){
+    Utilities.downloadAsPDF(this.pdfContent, 'OccupationWise');
+  }
+
+  onSearch(){
+    if(this.searchForm.valid){
+      let searchData = <SearchModel> this.searchForm.value;
+      console.log(searchData);
+      this.loadData(searchData);
+    }
+  }
+
+  get hasAnyValue(){
+    return Object.keys(this.searchForm.value).some(k => !!this.searchForm.value[k]);
+  }
+
+  resetSearchForm(){
+    this.loadData(null);
+  }
+
+  loadData(searchObject: SearchModel | null): void {
+    this.dataLoader.getData().subscribe((data)=>{
+      this.people = data;
+      this.calculateOccupationCount(searchObject);
+    });
+  }
+
+  calculateOccupationCount(searchObject: SearchModel | null): void {
+    this.occupationCountMap.clear();
+    if (this.people) {
+      this.people.forEach(person => {
+        const occupation = person.occupation;
+        let currentCount = this.occupationCountMap.get(occupation) ?? 0;
+        this.occupationCountMap.set(occupation, currentCount + 1);
+      });
+    }
+
+    // console.log('Occupation Count Map:', this.occupationCountMap);
+    this.generateGraph(searchObject);
+  }
+
+  generateGraph(searchObject: SearchModel | null): void{
+    const keysArray: string[] = Array.from(this.occupationCountMap.keys());
+    const valuesArray: number[] = Array.from(this.occupationCountMap.values());
+    var label: string = '';
+
+    if(searchObject!=null){
+      if(searchObject.upazilla!=null && searchObject.upazilla!=''){
+        label = 'Upazilla:' + searchObject.upazilla;
+      }
+      if(searchObject.union!=null && searchObject.union!=''){
+        if(label!=''){
+          label = label + ', Union:' + searchObject.union;
+        }
+        else{
+          label = 'Union:' + searchObject.union;
+        }
+      }
+      if(searchObject.area!=null && searchObject.area!=''){
+        if(label!=''){
+          label = label + ', Area:' + searchObject.area;
+        }
+        else{
+          label = 'Area:' + searchObject.area;
+        }
+      }
+    }
+
+    if(label==''){
+      label = 'Complete data';
+    }
+
+    const documentStyle = getComputedStyle(document.documentElement);
+    const textColor = documentStyle.getPropertyValue('--text-color');
+    const textColorSecondary = documentStyle.getPropertyValue('--text-color-secondary');
+    const surfaceBorder = documentStyle.getPropertyValue('--surface-border');
+
+    this.data = {
+      labels: keysArray,
+      datasets: [
+        {
+          label: label,
+          backgroundColor: documentStyle.getPropertyValue('--blue-500'),
+          borderColor: documentStyle.getPropertyValue('--blue-500'),
+          data: valuesArray
+        }
+      ]
+    };
+
+    this.options = {
+      indexAxis: 'y',
+      maintainAspectRatio: false,
+      aspectRatio: 0.8,
+      plugins: {
+        legend: {
+          labels: {
+            color: textColor
+          }
+        }
+      },
+      scales: {
+        x: {
+          ticks: {
+            color: textColorSecondary,
+            precision: 0,
+            font: {
+              weight: 500
+            }
+          },
+          grid: {
+            color: surfaceBorder,
+            drawBorder: false
+          }
+        },
+        y: {
+          ticks: {
+            color: textColorSecondary
+          },
+          grid: {
+            color: surfaceBorder,
+            drawBorder: false
+          }
+        }
+      }
+    };
+  }
+}

src/app/model/person.ts

+export interface Person {
+  name: string;
+  voter_no: number;
+  fathers_name: string;
+  mothers_name: string;
+  occupation: string;
+  date_of_birth: string;
+  address: string;
+}

src/app/model/search-model.ts

+import {prop} from "@rxweb/reactive-form-validators";
+
+export class SearchModel {
+  @prop()
+  upazilla!: string;
+
+  @prop()
+  union!: string;
+
+  @prop()
+  area!: string;
+}

src/app/services/data-loader.service.spec.ts

+import { TestBed } from '@angular/core/testing';
+
+import { DataLoaderService } from './data-loader.service';
+
+describe('DataLoaderService', () => {
+  let service: DataLoaderService;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(DataLoaderService);
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+});

src/app/services/data-loader.service.ts

+import { Injectable } from '@angular/core';
+import {HttpClient} from "@angular/common/http";
+import {Person} from "../model/person";
+import { Observable } from "rxjs";
+
+@Injectable({
+  providedIn: 'root'
+})
+export class DataLoaderService {
+
+  constructor(private httpClient: HttpClient){ }
+
+  getData(): Observable<Person[]>{
+    let url = `assets/data.json`;
+    return this.httpClient.get<Person[]>(url);
+  }
+}

src/app/utilities/utilities.spec.ts

+import { Utilities } from './utilities';
+
+describe('Utilities', () => {
+  it('should create an instance', () => {
+    expect(new Utilities()).toBeTruthy();
+  });
+});

src/app/utilities/utilities.ts

+import tinycolor from "tinycolor2";
+import html2canvas from "html2canvas";
+import jsPDF from "jspdf";
+import {ElementRef} from "@angular/core";
+
+export abstract class Utilities {
+  // Function to generate shades of a color based on values
+  public static generateShades(data: number[], colorCode: string): string[] {
+    const maxValue = Math.max(...data);
+    const minValue = Math.min(...data);
+
+    return data.map(value => {
+      // Calculate the percentage between the min and max values
+      const percentage = (value - minValue) / (maxValue - minValue);
+
+      // Generate a shade based on the percentage
+      const shade = tinycolor(colorCode).darken(percentage * 20).toHexString();
+
+      return shade;
+    });
+  }
+
+  public static downloadAsPDF(pdfContent: ElementRef, pdfName: string) {
+    const content = pdfContent.nativeElement;
+
+    // Use html2canvas to capture the content as an image with higher DPI
+    html2canvas(content, { scale: 2 }).then(canvas => {
+      const pdf = new jsPDF({
+        orientation: 'landscape', // Set PDF to landscape
+        unit: 'mm',
+        format: 'a4',
+      });
+
+      const imgData = canvas.toDataURL('image/png', 1.0); // Use 1.0 quality
+
+      // Calculate aspect ratio
+      const aspectRatio = canvas.width / canvas.height;
+
+      // Calculate new dimensions to fit within PDF
+      const pdfWidth = pdf.internal.pageSize.width;
+      const pdfHeight = pdfWidth / aspectRatio;
+
+      // Set padding
+      const paddingX = 10;
+      const paddingY = 10;
+
+      // Center the image on the PDF with padding
+      const xOffset = paddingX;
+      const yOffset = (pdf.internal.pageSize.height - pdfHeight) / 2 + paddingY;
+
+      // Add the image to the PDF
+      pdf.addImage(imgData, 'PNG', xOffset, yOffset, pdfWidth - 2 * paddingX, pdfHeight - 2 * paddingY);
+      pdf.save(pdfName + '.pdf');
+    });
+  }
+}

src/index.html

+<!doctype html>
+<html lang="en">
+<head>
+  <meta charset="utf-8">
+  <title>DataHandler</title>
+  <base href="/">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <link rel="icon" type="image/x-icon" href="favicon.ico">
+</head>
+<body>
+  <app-root></app-root>
+</body>
+</html>

src/main.ts

+import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
+
+import { AppModule } from './app/app.module';
+
+
+platformBrowserDynamic().bootstrapModule(AppModule)
+  .catch(err => console.error(err));

tsconfig.app.json

+/* To learn more about this file see: https://angular.io/config/tsconfig. */
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./out-tsc/app",
+    "types": []
+  },
+  "files": [
+    "src/main.ts"
+  ],
+  "include": [
+    "src/**/*.d.ts"
+  ]
+}

tsconfig.json

+/* To learn more about this file see: https://angular.io/config/tsconfig. */
+{
+  "compileOnSave": false,
+  "compilerOptions": {
+    "outDir": "./dist/out-tsc",
+    "forceConsistentCasingInFileNames": true,
+    "strict": true,
+    "noImplicitOverride": true,
+    "noPropertyAccessFromIndexSignature": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true,
+    "esModuleInterop": true,
+    "sourceMap": true,
+    "declaration": false,
+    "experimentalDecorators": true,
+    "moduleResolution": "node",
+    "importHelpers": true,
+    "target": "ES2022",
+    "module": "ES2022",
+    "useDefineForClassFields": false,
+    "lib": [
+      "ES2022",
+      "dom"
+    ]
+  },
+  "angularCompilerOptions": {
+    "enableI18nLegacyMessageIdFormat": false,
+    "strictInjectionParameters": true,
+    "strictInputAccessModifiers": true,
+    "strictTemplates": true
+  }
+}

tsconfig.spec.json

+/* To learn more about this file see: https://angular.io/config/tsconfig. */
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./out-tsc/spec",
+    "types": [
+      "jasmine"
+    ]
+  },
+  "include": [
+    "src/**/*.spec.ts",
+    "src/**/*.d.ts"
+  ]
+}