import { Component, OnInit, inject } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';
import { RoleService } from '../../services/role.service';
import { HlmButton } from '@spartan-ng/helm/button';

interface ResourceItem {
  name: string;
  label: string;
}

@Component({
  selector: 'app-role-permissions',
  standalone: true,
  imports: [CommonModule, FormsModule, HlmButton],
  templateUrl: './role-permissions.component.html',
  styleUrl: './role-permissions.component.css'
})
export class RolePermissionsComponent implements OnInit {
  private roleService = inject(RoleService);

  roles: any[] = [];
  selectedRole: any = null;
  newRoleName = '';
  isSaving = false;
  successMessage = '';
  errorMessage = '';

  resources: ResourceItem[] = [
    { name: 'cabin', label: 'Cabines' },
    { name: 'company', label: 'Empresas' },
    { name: 'role', label: 'Perfis de Acesso' }
  ];

  ngOnInit(): void {
    this.loadRoles();
  }

  loadRoles(): void {
    this.roleService.list({}).subscribe({
      next: (res: any) => {
        this.roles = res?.items || [];
        if (this.roles.length > 0 && !this.selectedRole) {
          this.selectRole(this.roles[0]);
        } else if (this.selectedRole) {
          const updated = this.roles.find(r => r.id === this.selectedRole.id);
          if (updated) this.selectRole(updated);
        }
      },
      error: (err: any) => {
        this.errorMessage = 'Erro ao carregar perfis de acesso.';
      }
    });
  }

  selectRole(role: any): void {
    // Clona para evitar modificar a referência original antes de salvar
    this.selectedRole = {
      ...role,
      permissions: [...(role.permissions || [])]
    };
    this.successMessage = '';
    this.errorMessage = '';
  }

  createRole(): void {
    if (!this.newRoleName.trim()) return;

    this.roleService.create({ name: this.newRoleName.trim(), permissions: [] }).subscribe({
      next: (created: any) => {
        this.newRoleName = '';
        this.successMessage = 'Perfil de acesso criado com sucesso!';
        this.selectedRole = created;
        this.loadRoles();
      },
      error: (err: any) => {
        this.errorMessage = err?.error?.message || 'Erro ao criar perfil de acesso.';
      }
    });
  }

  hasPermission(action: string, resource: string): boolean {
    if (!this.selectedRole) return false;
    if (this.selectedRole.permissions.includes('*')) return true;
    const permission = `${action}:${resource}`;
    return this.selectedRole.permissions.includes(permission);
  }

  togglePermission(action: string, resource: string): void {
    if (!this.selectedRole) return;
    const permission = `${action}:${resource}`;
    const index = this.selectedRole.permissions.indexOf(permission);
    if (index > -1) {
      this.selectedRole.permissions.splice(index, 1);
    } else {
      this.selectedRole.permissions.push(permission);
    }
  }

  hasSpecialPermission(permission: string): boolean {
    if (!this.selectedRole) return false;
    if (this.selectedRole.permissions.includes('*')) return true;
    return this.selectedRole.permissions.includes(permission);
  }

  toggleSpecialPermission(permission: string): void {
    if (!this.selectedRole) return;
    const index = this.selectedRole.permissions.indexOf(permission);
    if (index > -1) {
      this.selectedRole.permissions.splice(index, 1);
    } else {
      this.selectedRole.permissions.push(permission);
    }
  }

  savePermissions(): void {
    if (!this.selectedRole) return;

    this.isSaving = true;
    this.successMessage = '';
    this.errorMessage = '';

    // Se for o perfil do Administrador, garantimos que a permissão curinga '*' continue salva
    if (this.selectedRole.name === 'Administrador' && !this.selectedRole.permissions.includes('*')) {
      this.selectedRole.permissions.push('*');
    }

    this.roleService.update(this.selectedRole.id, this.selectedRole).subscribe({
      next: (updated: any) => {
        this.isSaving = false;
        this.successMessage = 'Permissões do perfil atualizadas com sucesso!';
        // Atualiza a lista local com os novos valores
        this.loadRoles();
      },
      error: (err: any) => {
        this.isSaving = false;
        this.errorMessage = err?.error?.message || 'Erro ao salvar permissões do perfil.';
      }
    });
  }
}