import { Injectable } from '@angular/core';

export interface LegalInfo {
  witnessStatements: string;
  confessions: string;
  evidence: File[]; // Assuming you're collecting file(s) as evidence
}

export interface PoliceCase {
  // Optional metadata used by your UI
  caseId?: string;
  firRef?: string;
  occurredFrom?: string;
  occurredTo?: string;
  jurisdiction?: string;
  sceneType?: string;
  dateTime?: string;
  status?: 'Open' | 'Under Investigation' | 'Closed';
  crime: string;
  police: {
    name: string;
    station: string;
    address: string;
    pincode: string;
    dutyPerson: string;
    modeOfCrime: string;
    information?: string;
  };
  accused: {
    name: string;
    age: string | number;
    gender: string;
    address: string;
    occupation?: string;
  };
  legal: LegalInfo; // Add the legal property here
  victimName?: string;
  caseCategory?: string;
  reportedBy?: string;
  lastUpdated?: string;
  verifiedBy?: string;
}

@Injectable({ providedIn: 'root' })
export class CaseStoreService {
  private readonly storageKey = 'py_detect_police_cases';
  private cases: PoliceCase[] = [];

  constructor() {
    this.load();
  }

  /** Create (newest first) */
  private getNextCaseId(): string {
    const max = this.cases
      .map(c => c.caseId)
      .map(id => parseInt((id || '').replace('CASE-', ''), 10))
      .filter(n => !isNaN(n))
      .reduce((a, b) => Math.max(a, b), 0);
    return `CASE-${(max + 1).toString().padStart(3, '0')}`;
  }

  addPoliceCase(c: PoliceCase): void {
    if (!c.caseId) {
      c.caseId = this.getNextCaseId();
    }
    c.lastUpdated = new Date().toISOString();
    c.verifiedBy = c.verifiedBy || '';
    this.cases.unshift(c);
    this.save();
  }

  /** Read */
  getPoliceCases(): PoliceCase[] {
    return this.cases;
  }

  /** Update by array index */
  updatePoliceCaseAt(index: number, updated: PoliceCase): void {
    if (index >= 0 && index < this.cases.length) {
      updated.lastUpdated = new Date().toISOString();
      this.cases[index] = updated;
      this.save();
    }
  }

  /** Delete by array index */
  deletePoliceCaseAt(index: number): void {
    if (index >= 0 && index < this.cases.length) {
      this.cases.splice(index, 1);
      this.save();
    }
  }

  /**
   * Convenience: map Info page reactive-form value to PoliceCase and store it.
   * Call with the whole this.form.value from InfopageComponent.
   */
  addFromInfoForm(formValue: any): void {
    const crime = (formValue && formValue.crime) || {};
    const suspect = (formValue && formValue.suspect) || {};
    const notes = (formValue && formValue.notes) || {};
    const legal = (formValue && formValue.legal) || {};

    const mapped: PoliceCase = {
      caseId: crime.caseId || '',
      firRef: crime['FIR / Ref #'] || formValue['FIR / Ref #'] || '',
      occurredFrom: crime['Occurred From'] || formValue['Occurred From'] || '',
      occurredTo: crime['Occurred To'] || formValue['Occurred To'] || '',
      jurisdiction: crime['Jurisdiction / PS'] || formValue['Jurisdiction / PS'] || '',
      sceneType: crime['Scene Type'] || formValue['Scene Type'] || '',
      dateTime: crime.dateTime || '',
      status: notes.status || 'Open',
      crime: crime.crimeType || 'Unknown',
      police: {
        name: notes.officerInCharge || '—',
        station: '—',
        address: crime.location || '—',
        pincode: '',
        dutyPerson: notes.officerInCharge || '—',
        modeOfCrime: crime.crimeType || '—',
        information: notes.initialFindings || ''
      },
      accused: {
        name: suspect.fullName || '—',
        age: suspect.age || '—',
        gender: suspect.gender || '—',
        address: suspect.address || '—',
        occupation: suspect.alias || ''
      },
      legal: {
        witnessStatements: legal.witnessStatements || '',
        confessions: legal.confessions || '',
        evidence: legal.evidence || []
      },
      victimName: crime.victimName || formValue['Victim Name'] || '',
      caseCategory: crime.caseCategory || formValue['Case Category'] || '',
      reportedBy: crime.reportedBy || formValue['Reported By'] || '',
      lastUpdated: new Date().toISOString(),
      verifiedBy: formValue.verifiedBy || '',
    };

    this.addPoliceCase(mapped);
  }

  
  /** Persist to localStorage (safe to keep; remove if not needed) */
  private save(): void {
    try { localStorage.setItem(this.storageKey, JSON.stringify(this.cases)); } catch { }
  }

  /** Load from localStorage */
  private load(): void {
    try {
      const raw = localStorage.getItem(this.storageKey);
      this.cases = raw ? (JSON.parse(raw) as PoliceCase[]) : [];
    } catch {
      this.cases = [];
    }
  }
}