import { Component, OnInit } from '@angular/core';
import { Router } from '@angular/router';
import { CaseStoreService, PoliceCase } from '../shared/case-store.service';
// For PDF generation
// import jsPDF from 'jspdf';

@Component({
  selector: 'app-validationpage',
  templateUrl: './validationpage.component.html',
  styleUrls: ['./validationpage.component.css']
})
export class ValidationpageComponent implements OnInit {
  truePercentage: number = 72;
  falsePercentage: number = 28;
  modalOpen: boolean = false;
  reportDate: string = new Date().toLocaleString('default', { month: 'long', year: 'numeric' });


  // Dashboard metrics (real-time from CaseStoreService)
  sessionCount: number = 0;
  officerCount: number = 0;
  suspectCount: number = 0;
  avgSessionDuration: string = '';
  analysisCount: number = 0;
  consistencyIndex: number = 0;
  audioVideoCount: number = 0;
  reportCount: number = 0;

  // Donut chart (officer session distribution)
  officer1Percent: number = 0;
  officer2Percent: number = 0;
  officer3Percent: number = 0;

  // Audio/Video metrics (current values will be animated)
  audioMetric1: number = 0; // Speech
  audioMetric2: number = 0; // Eye Contact
  audioMetric3: number = 0; // Emotion
  audioMetric4: number = 0; // Clarity
  audioMetric5: number = 0; // Confidence

  // Targets for animations
  private audioMetric1Target = 0;
  private audioMetric2Target = 0;
  private audioMetric3Target = 0;
  private audioMetric4Target = 0;
  private audioMetric5Target = 0;

  // Outcome distribution
  outcome1: number = 0; // Consistent
  outcome2: number = 0; // Needs Review
  outcome3: number = 0; // Inconsistent

  // Track which section/tab is selected
  selectedSection: string = 'Dashboard';

  // Analysis overview scores (for radial diagram) - displayed values
  audioAnalysisScore: number = 0;
  videoAnalysisScore: number = 0;
  verifiedScore: number = 0;

  // Analysis targets (final percentages to animate to)
  audioAnalysisTarget: number = 0;
  videoAnalysisTarget: number = 0;
  verifiedTarget: number = 0;

  // New: truthness/confidence fields used by template
  audioTruthness: number = 74;
  videoTruthness: number = 72;
  verifiedConfidence: number = 73;

  // SVG circle radii and computed values
  r1 = 80; // outer (blue)
  r2 = 64; // middle (green)
  r3 = 48; // inner (red)
  circumference1 = 2 * Math.PI * this.r1;
  circumference2 = 2 * Math.PI * this.r2;
  circumference3 = 2 * Math.PI * this.r3;
  // stroke-dashoffset values (start hidden = full circumference)
  offset1 = this.circumference1;
  offset2 = this.circumference2;
  offset3 = this.circumference3;

  constructor(private router: Router, private caseStore: CaseStoreService) {
    // Get latest cases
    const cases = this.caseStore.getPoliceCases();
    this.sessionCount = cases.length;
    this.officerCount = Array.from(new Set(cases.map(c => c.police?.name))).length;
    this.suspectCount = Array.from(new Set(cases.map(c => c.accused?.name))).length;
    this.analysisCount = cases.length;
    this.reportCount = cases.length;
    // Dummy: avgSessionDuration
    this.avgSessionDuration = '00:42:18';
    // Dummy: audio/video count
    this.audioVideoCount = cases.length;
    // Dummy: consistencyIndex (use a fallback value, or derive from available case data)
    this.consistencyIndex = Math.round((cases.reduce((sum, c) => sum + 72, 0) / (cases.length || 1)));
    // Donut chart: officer session distribution
    const officerSessions = cases.reduce((acc, c) => {
      const name = c.police?.name || 'Unknown';
      acc[name] = (acc[name] || 0) + 1;
      return acc;
    }, {} as { [name: string]: number });
    const officerNames = Object.keys(officerSessions);
    const totalSessions = cases.length || 1;
    this.officer1Percent = Math.round((officerSessions[officerNames[0]] || 0) * 100 / totalSessions);
    this.officer2Percent = Math.round((officerSessions[officerNames[1]] || 0) * 100 / totalSessions);
    this.officer3Percent = Math.round((officerSessions[officerNames[2]] || 0) * 100 / totalSessions);
    // Dummy: audio/video metric targets
    this.audioMetric1Target = 68;
    this.audioMetric2Target = 75;
    this.audioMetric3Target = 60;
    this.audioMetric4Target = 85;
    this.audioMetric5Target = 82;
    // Dummy: outcome distribution
    this.outcome1 = 60;
    this.outcome2 = 25;
    this.outcome3 = 15;
    // true/false percentage from router state
    const nav = this.router.getCurrentNavigation();
    const state = nav?.extras?.state as { truePercentage?: number; falsePercentage?: number };
    this.truePercentage = state?.truePercentage ?? 0;
    this.falsePercentage = state?.falsePercentage ?? 0;

    // compute overview targets (do NOT set displayed scores yet)
    this.computeOverviewScores();
  }

  ngOnInit(): void {
    // Start load animations
    this.animateLoad();
  }

  private animateLoad() {
    const duration = 3000; // ms — slow 3s animation per request
    const start = performance.now();

    const animate = (now: number) => {
      const t = Math.min(1, (now - start) / duration);
      // ease-out
      const ease = 1 - Math.pow(1 - t, 3);

      // animate metric bars from their targets
      this.audioMetric1 = Math.round(this.audioMetric1Target * ease);
      this.audioMetric2 = Math.round(this.audioMetric2Target * ease);
      this.audioMetric3 = Math.round(this.audioMetric3Target * ease);
      this.audioMetric4 = Math.round(this.audioMetric4Target * ease);
      this.audioMetric5 = Math.round(this.audioMetric5Target * ease);

      // interpolate displayed radial scores from0 to targets
      this.audioAnalysisScore = Math.round(this.audioAnalysisTarget * ease);
      this.videoAnalysisScore = Math.round(this.videoAnalysisTarget * ease);
      this.verifiedScore = Math.round(this.verifiedTarget * ease);

      // Also update the truthness/confidence displayed details
      this.audioTruthness = this.audioAnalysisScore;
      this.videoTruthness = this.videoAnalysisScore;
      this.verifiedConfidence = this.verifiedScore;

      // update SVG offsets so stroke animates from full circumference to target offset
      this.offset1 = Math.round(this.circumference1 * (1 - this.audioAnalysisScore / 100));
      this.offset2 = Math.round(this.circumference2 * (1 - this.videoAnalysisScore / 100));
      this.offset3 = Math.round(this.circumference3 * (1 - this.verifiedScore / 100));

      if (t < 1) {
        requestAnimationFrame(animate);
      }
    };

    // ensure offsets start hidden (full circumference)
    this.offset1 = this.circumference1;
    this.offset2 = this.circumference2;
    this.offset3 = this.circumference3;

    requestAnimationFrame(animate);
  }

  computeOverviewScores() {
    // Audio analysis target: average of audio metric targets
    const audioVals = [this.audioMetric1Target, this.audioMetric2Target, this.audioMetric3Target, this.audioMetric4Target, this.audioMetric5Target].filter(v => typeof v === 'number');
    this.audioAnalysisTarget = audioVals.length ? Math.round(audioVals.reduce((a, b) => a + b, 0) / audioVals.length) : 0;

    // Video analysis target: use consistencyIndex as proxy or derive from other available metrics
    this.videoAnalysisTarget = this.consistencyIndex || Math.round((this.audioMetric2Target + this.audioMetric3Target + this.audioMetric4Target) / 3);

    // Verified target: derive from truePercentage if available, else average of audio/video targets
    const v = this.truePercentage || Math.round((this.audioAnalysisTarget + this.videoAnalysisTarget) / 2);
    this.verifiedTarget = Math.round(v);

    // Do not set displayed scores or offsets here; animateLoad will handle the animated transition
  }

  percentToOffset(percent: number, circumference: number) {
    const pct = Math.max(0, Math.min(100, percent));
    return Math.round(circumference * (1 - pct / 100));
  }

  selectSection(section: string) {
    this.selectedSection = section;
  }

  navigateBackToCaseDetails() {
    this.router.navigate(['/case-details']);
  }

  openModal() {
    this.modalOpen = true;
  }

  closeModal() {
    this.modalOpen = false;
  }

  downloadPDF() {
    // Example: Use jsPDF to generate PDF
    // const doc = new jsPDF();
    // doc.text('Investigation Report', 10, 10);
    // doc.text(`Pass Percentage: ${this.truePercentage}%`, 10, 30);
    // doc.text(`Fail Percentage: ${this.falsePercentage}%`, 10, 40);
    // doc.save('investigation-report.pdf');
    alert('PDF download functionality to be implemented.');
  }

  emailReport() {
    // Example: Use mailto or backend API
    window.location.href = `mailto:?subject=Investigation Report&body=Pass Percentage: ${this.truePercentage}%\nFail Percentage: ${this.falsePercentage}%`;
  }

  navigateHome() {
    this.router.navigate(['/']);
  }

  navigateBackToPyDetect() {
    this.router.navigate(['/py-detect']);
  }

  reAnalyze() {
    // TODO: Implement re-analysis logic
    alert('Re-Analyze Audio/Video functionality to be implemented.');
  }

  // Navigate to question summary page
  goToQuestionSummary() {
    this.router.navigate(['/question-summary']);
  }

  getMetricGradient(metricValue: number): string {
    const p = Math.max(0, Math.min(100, Math.round(metricValue)));
    if (p >= 80) return 'linear-gradient(90deg, #10b981, #34d399)'; // green
    if (p >= 60) return 'linear-gradient(90deg, #3b82f6, #60a5fa)'; // blue
    if (p >= 40) return 'linear-gradient(90deg, #f59e0b, #f97316)'; // amber
    return 'linear-gradient(90deg, #ef4444, #fb7185)'; // red
  }

  getMetricTextColor(metricValue: number): string {
    const p = Math.max(0, Math.min(100, Math.round(metricValue)));
    return p >= 50 ? '#ffffff' : '#0f172a';
  }
}