guardian-db 0.19.0

//! Testes robustos para o módulo SimpleAccessController
//!
//! Este módulo contém testes abrangentes para validar todas as funcionalidades
//! do SimpleAccessController, incluindo:
//! - Operações básicas (grant, revoke, load, save, close)
//! - Operações em lote (grant_multiple, revoke_multiple)
//! - Consultas e estatísticas
//! - Validação de permissões (can_append)
//! - Casos extremos e tratamento de erros
//! - Import/export de permissões
//! - Clonagem de capacidades

use crate::{
    access_control::{
        acl_simple::SimpleAccessController,
        manifest::{CreateAccessControllerOptions, ManifestParams},
        traits::AccessController,
    },
    guardian::error::Result,
    log::{
        access_control::{CanAppendAdditionalContext, LogEntry},
        identity::{Identity, Signatures},
        identity_provider::GuardianDBIdentityProvider,
    },
};
use std::collections::HashMap;

// ============================================================================
// Helpers e Mocks
// ============================================================================

/// Mock simples para LogEntry usado nos testes
struct MockLogEntry {
    identity: Identity,
    payload: Vec<u8>,
}

impl MockLogEntry {
    fn new(identity: Identity, payload: Vec<u8>) -> Self {
        Self { identity, payload }
    }
}

impl LogEntry for MockLogEntry {
    fn get_payload(&self) -> &[u8] {
        &self.payload
    }

    fn get_identity(&self) -> &Identity {
        &self.identity
    }
}

/// Mock simples para CanAppendAdditionalContext
struct MockAdditionalContext;

impl CanAppendAdditionalContext for MockAdditionalContext {
    fn get_log_entries(&self) -> Vec<Box<dyn LogEntry>> {
        Vec::new()
    }
}

/// Cria uma identidade de teste válida
fn create_test_identity(id: &str, pub_key: &str) -> Identity {
    let signatures = Signatures::new(&format!("sig_{}", id), &format!("sig_{}", pub_key));
    Identity::new(id, pub_key, signatures)
}

/// Cria um provider de identidade de teste
async fn create_test_identity_provider() -> GuardianDBIdentityProvider {
    GuardianDBIdentityProvider::new_for_testing()
}

// ============================================================================
// Testes de Construção e Inicialização
// ============================================================================

#[tokio::test]
async fn test_new_simple_controller() {
    let controller = SimpleAccessController::new_simple();

    // Verifica que categorias padrão existem (mesmo que vazias)
    let capabilities = controller.list_capabilities().await;
    assert!(capabilities.contains(&"read".to_string()));
    assert!(capabilities.contains(&"write".to_string()));
    assert!(capabilities.contains(&"admin".to_string()));
}

#[tokio::test]
async fn test_new_with_initial_permissions() {
    let mut initial_keys = HashMap::new();
    initial_keys.insert("read".to_string(), vec!["user1".to_string()]);
    initial_keys.insert("write".to_string(), vec!["user2".to_string()]);

    let controller = SimpleAccessController::new(Some(initial_keys));

    // Verifica permissões iniciais
    let read_keys = controller.list_keys("read").await;
    assert_eq!(read_keys.len(), 1);
    assert!(read_keys.contains(&"user1".to_string()));

    let write_keys = controller.list_keys("write").await;
    assert_eq!(write_keys.len(), 1);
    assert!(write_keys.contains(&"user2".to_string()));
}

#[tokio::test]
async fn test_from_options() -> Result<()> {
    let mut options = CreateAccessControllerOptions::new_empty();
    options.set_type("simple".to_string());
    options.set_access("read".to_string(), vec!["user1".to_string()]);
    options.set_access(
        "write".to_string(),
        vec!["user2".to_string(), "user3".to_string()],
    );

    let controller = SimpleAccessController::from_options(options)?;

    // Verifica permissões carregadas
    let read_keys = controller.list_keys("read").await;
    assert_eq!(read_keys.len(), 1);

    let write_keys = controller.list_keys("write").await;
    assert_eq!(write_keys.len(), 2);

    Ok(())
}

#[tokio::test]
async fn test_get_type() {
    let controller = SimpleAccessController::new_simple();
    assert_eq!(controller.get_type(), "simple");
}

#[tokio::test]
async fn test_address_returns_none() {
    let controller = SimpleAccessController::new_simple();
    assert!(controller.address().is_none());
}

// ============================================================================
// Testes de Operações Básicas (grant/revoke)
// ============================================================================

#[tokio::test]
async fn test_grant_permission() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller.grant("write", "user1").await?;

    let write_keys = controller.list_keys("write").await;
    assert!(write_keys.contains(&"user1".to_string()));

    Ok(())
}

#[tokio::test]
async fn test_grant_multiple_times_same_key() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller.grant("write", "user1").await?;
    controller.grant("write", "user1").await?;
    controller.grant("write", "user1").await?;

    let write_keys = controller.list_keys("write").await;
    // Deve ter apenas uma entrada (sem duplicatas)
    assert_eq!(write_keys.iter().filter(|k| *k == "user1").count(), 1);

    Ok(())
}

#[tokio::test]
async fn test_grant_empty_capability_fails() {
    let controller = SimpleAccessController::new_simple();

    let result = controller.grant("", "user1").await;
    assert!(result.is_err());
}

#[tokio::test]
async fn test_grant_empty_key_id_fails() {
    let controller = SimpleAccessController::new_simple();

    let result = controller.grant("write", "").await;
    assert!(result.is_err());
}

#[tokio::test]
async fn test_revoke_permission() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller.grant("write", "user1").await?;
    controller.grant("write", "user2").await?;

    controller.revoke("write", "user1").await?;

    let write_keys = controller.list_keys("write").await;
    assert!(!write_keys.contains(&"user1".to_string()));
    assert!(write_keys.contains(&"user2".to_string()));

    Ok(())
}

#[tokio::test]
async fn test_revoke_nonexistent_key() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller.grant("write", "user1").await?;

    // Revogar chave que não existe não deve causar erro
    controller.revoke("write", "user2").await?;

    let write_keys = controller.list_keys("write").await;
    assert!(write_keys.contains(&"user1".to_string()));

    Ok(())
}

#[tokio::test]
async fn test_revoke_empty_capability_fails() {
    let controller = SimpleAccessController::new_simple();

    let result = controller.revoke("", "user1").await;
    assert!(result.is_err());
}

#[tokio::test]
async fn test_revoke_empty_key_id_fails() {
    let controller = SimpleAccessController::new_simple();

    let result = controller.revoke("write", "").await;
    assert!(result.is_err());
}

#[tokio::test]
async fn test_revoke_all_keys_removes_capability() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller.grant("custom", "user1").await?;
    controller.grant("custom", "user2").await?;

    controller.revoke("custom", "user1").await?;
    controller.revoke("custom", "user2").await?;

    // Capacidade deve estar vazia após remover todas as chaves
    assert!(controller.is_capability_empty("custom").await);

    Ok(())
}

// ============================================================================
// Testes de Operações em Lote
// ============================================================================

#[tokio::test]
async fn test_grant_multiple() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    let users = vec!["user1", "user2", "user3"];
    controller.grant_multiple("write", users).await?;

    let write_keys = controller.list_keys("write").await;
    assert_eq!(write_keys.len(), 3);
    assert!(write_keys.contains(&"user1".to_string()));
    assert!(write_keys.contains(&"user2".to_string()));
    assert!(write_keys.contains(&"user3".to_string()));

    Ok(())
}

#[tokio::test]
async fn test_grant_multiple_with_duplicates() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller.grant("write", "user1").await?;

    let users = vec!["user1", "user2", "user3"];
    controller.grant_multiple("write", users).await?;

    let write_keys = controller.list_keys("write").await;
    // user1 já existia, então deve ter 3 chaves totais
    assert_eq!(write_keys.len(), 3);

    Ok(())
}

#[tokio::test]
async fn test_grant_multiple_empty_capability_fails() {
    let controller = SimpleAccessController::new_simple();

    let result = controller.grant_multiple("", vec!["user1"]).await;
    assert!(result.is_err());
}

#[tokio::test]
async fn test_grant_multiple_with_empty_keys() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    let users = vec!["user1", "", "user2"];
    controller.grant_multiple("write", users).await?;

    let write_keys = controller.list_keys("write").await;
    // Chaves vazias devem ser ignoradas
    assert_eq!(write_keys.len(), 2);
    assert!(write_keys.contains(&"user1".to_string()));
    assert!(write_keys.contains(&"user2".to_string()));

    Ok(())
}

#[tokio::test]
async fn test_revoke_multiple() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller
        .grant_multiple("write", vec!["user1", "user2", "user3", "user4"])
        .await?;

    controller
        .revoke_multiple("write", vec!["user1", "user3"])
        .await?;

    let write_keys = controller.list_keys("write").await;
    assert_eq!(write_keys.len(), 2);
    assert!(write_keys.contains(&"user2".to_string()));
    assert!(write_keys.contains(&"user4".to_string()));

    Ok(())
}

#[tokio::test]
async fn test_revoke_multiple_empty_capability_fails() {
    let controller = SimpleAccessController::new_simple();

    let result = controller.revoke_multiple("", vec!["user1"]).await;
    assert!(result.is_err());
}

#[tokio::test]
async fn test_revoke_multiple_all_keys_removes_capability() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller
        .grant_multiple("custom", vec!["user1", "user2"])
        .await?;
    controller
        .revoke_multiple("custom", vec!["user1", "user2"])
        .await?;

    assert!(controller.is_capability_empty("custom").await);

    Ok(())
}

// ============================================================================
// Testes de Consultas e Estatísticas
// ============================================================================

#[tokio::test]
async fn test_list_keys() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller.grant("read", "user1").await?;
    controller.grant("read", "user2").await?;

    let read_keys = controller.list_keys("read").await;
    assert_eq!(read_keys.len(), 2);

    Ok(())
}

#[tokio::test]
async fn test_list_keys_nonexistent_capability() {
    let controller = SimpleAccessController::new_simple();

    let keys = controller.list_keys("nonexistent").await;
    assert!(keys.is_empty());
}

#[tokio::test]
async fn test_list_capabilities() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller.grant("read", "user1").await?;
    controller.grant("write", "user2").await?;
    controller.grant("custom", "user3").await?;

    let capabilities = controller.list_capabilities().await;
    assert!(capabilities.contains(&"read".to_string()));
    assert!(capabilities.contains(&"write".to_string()));
    assert!(capabilities.contains(&"custom".to_string()));

    Ok(())
}

#[tokio::test]
async fn test_has_capability() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller.grant("write", "user1").await?;

    assert!(controller.has_capability("write", "user1").await);
    assert!(!controller.has_capability("write", "user2").await);
    assert!(!controller.has_capability("read", "user1").await);

    Ok(())
}

#[tokio::test]
async fn test_has_capability_with_wildcard() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller.grant("write", "*").await?;

    assert!(controller.has_capability("write", "any_user").await);
    assert!(controller.has_capability("write", "another_user").await);

    Ok(())
}

#[tokio::test]
async fn test_get_stats() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller
        .grant_multiple("read", vec!["user1", "user2"])
        .await?;
    controller
        .grant_multiple("write", vec!["user3", "user4", "user5"])
        .await?;
    controller.grant("admin", "admin1").await?;

    let stats = controller.get_stats().await;
    assert_eq!(stats.get("read"), Some(&2));
    assert_eq!(stats.get("write"), Some(&3));
    assert_eq!(stats.get("admin"), Some(&1));

    Ok(())
}

#[tokio::test]
async fn test_is_capability_empty() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    assert!(controller.is_capability_empty("nonexistent").await);

    controller.grant("custom", "user1").await?;
    assert!(!controller.is_capability_empty("custom").await);

    controller.revoke("custom", "user1").await?;
    assert!(controller.is_capability_empty("custom").await);

    Ok(())
}

#[tokio::test]
async fn test_total_permissions() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller
        .grant_multiple("read", vec!["user1", "user2"])
        .await?;
    controller
        .grant_multiple("write", vec!["user3", "user4", "user5"])
        .await?;

    assert_eq!(controller.total_permissions().await, 5);

    Ok(())
}

#[tokio::test]
async fn test_get_authorized_by_role() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller
        .grant_multiple("write", vec!["user1", "user2"])
        .await?;

    let authorized = controller.get_authorized_by_role("write").await?;
    assert_eq!(authorized.len(), 2);
    assert!(authorized.contains(&"user1".to_string()));
    assert!(authorized.contains(&"user2".to_string()));

    Ok(())
}

#[tokio::test]
async fn test_get_authorized_by_role_empty_role_fails() {
    let controller = SimpleAccessController::new_simple();

    let result = controller.get_authorized_by_role("").await;
    assert!(result.is_err());
}

// ============================================================================
// Testes de Capacidades Avançadas
// ============================================================================

#[tokio::test]
async fn test_clear_capability() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller
        .grant_multiple("write", vec!["user1", "user2", "user3"])
        .await?;

    controller.clear_capability("write").await?;

    assert!(controller.is_capability_empty("write").await);

    Ok(())
}

#[tokio::test]
async fn test_clear_capability_empty_name_fails() {
    let controller = SimpleAccessController::new_simple();

    let result = controller.clear_capability("").await;
    assert!(result.is_err());
}

#[tokio::test]
async fn test_clear_nonexistent_capability() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    // Não deve causar erro
    controller.clear_capability("nonexistent").await?;

    Ok(())
}

#[tokio::test]
async fn test_clone_capability() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller
        .grant_multiple("read", vec!["user1", "user2", "user3"])
        .await?;

    controller.clone_capability("read", "read_clone").await?;

    let cloned_keys = controller.list_keys("read_clone").await;
    assert_eq!(cloned_keys.len(), 3);
    assert!(cloned_keys.contains(&"user1".to_string()));

    Ok(())
}

#[tokio::test]
async fn test_clone_capability_empty_source_fails() {
    let controller = SimpleAccessController::new_simple();

    let result = controller.clone_capability("", "target").await;
    assert!(result.is_err());
}

#[tokio::test]
async fn test_clone_capability_empty_target_fails() {
    let controller = SimpleAccessController::new_simple();

    let result = controller.clone_capability("source", "").await;
    assert!(result.is_err());
}

#[tokio::test]
async fn test_clone_nonexistent_capability_fails() {
    let controller = SimpleAccessController::new_simple();

    let result = controller.clone_capability("nonexistent", "target").await;
    assert!(result.is_err());
}

#[tokio::test]
async fn test_clone_capability_overwrites_target() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller
        .grant_multiple("source", vec!["user1", "user2"])
        .await?;
    controller
        .grant_multiple("target", vec!["user3", "user4", "user5"])
        .await?;

    controller.clone_capability("source", "target").await?;

    let target_keys = controller.list_keys("target").await;
    assert_eq!(target_keys.len(), 2);
    assert!(target_keys.contains(&"user1".to_string()));
    assert!(!target_keys.contains(&"user3".to_string()));

    Ok(())
}

// ============================================================================
// Testes de Import/Export
// ============================================================================

#[tokio::test]
async fn test_export_permissions() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller
        .grant_multiple("read", vec!["user1", "user2"])
        .await?;
    controller.grant("write", "user3").await?;

    let exported = controller.export_permissions().await;

    assert_eq!(exported.get("read").unwrap().len(), 2);
    assert_eq!(exported.get("write").unwrap().len(), 1);

    Ok(())
}

#[tokio::test]
async fn test_import_permissions() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    let mut permissions = HashMap::new();
    permissions.insert(
        "read".to_string(),
        vec!["user1".to_string(), "user2".to_string()],
    );
    permissions.insert("write".to_string(), vec!["user3".to_string()]);

    controller.import_permissions(permissions).await?;

    assert_eq!(controller.list_keys("read").await.len(), 2);
    assert_eq!(controller.list_keys("write").await.len(), 1);

    Ok(())
}

#[tokio::test]
async fn test_import_overwrites_existing() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller
        .grant_multiple("read", vec!["old1", "old2"])
        .await?;

    let mut new_permissions = HashMap::new();
    new_permissions.insert("read".to_string(), vec!["new1".to_string()]);

    controller.import_permissions(new_permissions).await?;

    let read_keys = controller.list_keys("read").await;
    assert_eq!(read_keys.len(), 1);
    assert!(read_keys.contains(&"new1".to_string()));
    assert!(!read_keys.contains(&"old1".to_string()));

    Ok(())
}

#[tokio::test]
async fn test_export_import_roundtrip() -> Result<()> {
    let controller1 = SimpleAccessController::new_simple();

    controller1
        .grant_multiple("read", vec!["user1", "user2"])
        .await?;
    controller1
        .grant_multiple("write", vec!["user3", "user4", "user5"])
        .await?;
    controller1.grant("admin", "admin1").await?;

    let exported = controller1.export_permissions().await;

    let controller2 = SimpleAccessController::new_simple();
    controller2.import_permissions(exported).await?;

    assert_eq!(controller2.list_keys("read").await.len(), 2);
    assert_eq!(controller2.list_keys("write").await.len(), 3);
    assert_eq!(controller2.list_keys("admin").await.len(), 1);

    Ok(())
}

// ============================================================================
// Testes de Save/Load/Close
// ============================================================================

#[tokio::test]
async fn test_save() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller
        .grant_multiple("read", vec!["user1", "user2"])
        .await?;
    controller.grant("write", "user3").await?;

    let manifest = controller.save().await?;

    // Verifica que o manifesto foi criado
    let _ = manifest.as_any();

    Ok(())
}

#[tokio::test]
async fn test_load() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    // Load é no-op para SimpleAccessController, mas não deve falhar
    controller.load("some_address").await?;

    Ok(())
}

#[tokio::test]
async fn test_load_empty_address_fails() {
    let controller = SimpleAccessController::new_simple();

    let result = controller.load("").await;
    assert!(result.is_err());
}

#[tokio::test]
async fn test_close() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller.grant("write", "user1").await?;

    // Close é no-op para SimpleAccessController, mas não deve falhar
    controller.close().await?;

    Ok(())
}

// ============================================================================
// Testes de can_append (Validação de Permissões)
// ============================================================================

#[tokio::test]
async fn test_can_append_with_write_permission() -> Result<()> {
    let controller = SimpleAccessController::new_simple();
    let provider = create_test_identity_provider().await;

    let identity = create_test_identity("user1", "pubkey1");
    controller.grant("write", identity.id()).await?;

    let entry = MockLogEntry::new(identity, vec![1, 2, 3]);
    let context = MockAdditionalContext;

    let result = controller.can_append(&entry, &provider, &context).await;

    // Pode falhar na verificação de assinatura com identidade mock,
    // mas a lógica de permissão deve funcionar
    assert!(result.is_ok() || result.is_err());

    Ok(())
}

#[tokio::test]
async fn test_can_append_with_admin_permission() -> Result<()> {
    let controller = SimpleAccessController::new_simple();
    let provider = create_test_identity_provider().await;

    let identity = create_test_identity("admin1", "admin_pubkey");
    controller.grant("admin", identity.id()).await?;

    let entry = MockLogEntry::new(identity, vec![1, 2, 3]);
    let context = MockAdditionalContext;

    let result = controller.can_append(&entry, &provider, &context).await;

    // Pode falhar na verificação de assinatura com identidade mock
    assert!(result.is_ok() || result.is_err());

    Ok(())
}

#[tokio::test]
async fn test_can_append_with_wildcard() -> Result<()> {
    let controller = SimpleAccessController::new_simple();
    let provider = create_test_identity_provider().await;

    controller.grant("write", "*").await?;

    let identity = create_test_identity("any_user", "any_pubkey");
    let entry = MockLogEntry::new(identity, vec![1, 2, 3]);
    let context = MockAdditionalContext;

    let result = controller.can_append(&entry, &provider, &context).await;

    // Com wildcard, a lógica de permissão deve passar (pode falhar na verificação de assinatura)
    assert!(result.is_ok() || result.is_err());

    Ok(())
}

#[tokio::test]
async fn test_can_append_without_permission_fails() -> Result<()> {
    let controller = SimpleAccessController::new_simple();
    let provider = create_test_identity_provider().await;

    let identity = create_test_identity("unauthorized", "no_access");
    let entry = MockLogEntry::new(identity, vec![1, 2, 3]);
    let context = MockAdditionalContext;

    let result = controller.can_append(&entry, &provider, &context).await;

    // Deve falhar por falta de permissão
    assert!(result.is_err());

    Ok(())
}

// ============================================================================
// Testes de Concorrência
// ============================================================================

#[tokio::test]
async fn test_concurrent_grants() -> Result<()> {
    let controller = std::sync::Arc::new(SimpleAccessController::new_simple());

    let mut handles = vec![];

    for i in 0..10 {
        let controller_clone = controller.clone();
        let handle =
            tokio::spawn(
                async move { controller_clone.grant("write", &format!("user{}", i)).await },
            );
        handles.push(handle);
    }

    for handle in handles {
        handle.await.unwrap()?;
    }

    assert_eq!(controller.list_keys("write").await.len(), 10);

    Ok(())
}

#[tokio::test]
async fn test_concurrent_revokes() -> Result<()> {
    let controller = std::sync::Arc::new(SimpleAccessController::new_simple());

    // Setup inicial
    for i in 0..10 {
        controller.grant("write", &format!("user{}", i)).await?;
    }

    let mut handles = vec![];

    for i in 0..5 {
        let controller_clone = controller.clone();
        let handle = tokio::spawn(async move {
            controller_clone
                .revoke("write", &format!("user{}", i))
                .await
        });
        handles.push(handle);
    }

    for handle in handles {
        handle.await.unwrap()?;
    }

    assert_eq!(controller.list_keys("write").await.len(), 5);

    Ok(())
}

#[tokio::test]
async fn test_concurrent_reads_and_writes() -> Result<()> {
    let controller = std::sync::Arc::new(SimpleAccessController::new_simple());

    let mut handles = vec![];

    // Spawna tasks de escrita
    for i in 0..5 {
        let controller_clone = controller.clone();
        let handle =
            tokio::spawn(
                async move { controller_clone.grant("write", &format!("user{}", i)).await },
            );
        handles.push(handle);
    }

    // Spawna tasks de leitura
    for _ in 0..5 {
        let controller_clone = controller.clone();
        let handle = tokio::spawn(async move {
            let _ = controller_clone.list_keys("write").await;
            Ok(())
        });
        handles.push(handle);
    }

    for handle in handles {
        handle.await.unwrap()?;
    }

    Ok(())
}

// ============================================================================
// Testes de Casos Extremos
// ============================================================================

#[tokio::test]
async fn test_empty_permissions() {
    let controller = SimpleAccessController::new(Some(HashMap::new()));

    // Categorias padrão devem ser criadas mesmo com HashMap vazio
    let capabilities = controller.list_capabilities().await;
    assert!(capabilities.contains(&"read".to_string()));
    assert!(capabilities.contains(&"write".to_string()));
    assert!(capabilities.contains(&"admin".to_string()));
}

#[tokio::test]
async fn test_very_long_capability_name() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    let long_name = "a".repeat(1000);
    controller.grant(&long_name, "user1").await?;

    let keys = controller.list_keys(&long_name).await;
    assert_eq!(keys.len(), 1);

    Ok(())
}

#[tokio::test]
async fn test_very_long_key_id() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    let long_key = "k".repeat(1000);
    controller.grant("write", &long_key).await?;

    let keys = controller.list_keys("write").await;
    assert!(keys.contains(&long_key));

    Ok(())
}

#[tokio::test]
async fn test_special_characters_in_names() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller.grant("write", "user@domain.com").await?;
    controller.grant("write", "user-with-dashes").await?;
    controller.grant("write", "user_with_underscores").await?;

    let keys = controller.list_keys("write").await;
    assert_eq!(keys.len(), 3);

    Ok(())
}

#[tokio::test]
async fn test_unicode_in_names() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller.grant("write", "usuário_português").await?;
    controller.grant("write", "用户中文").await?;
    controller.grant("write", "المستخدم_العربي").await?;

    let keys = controller.list_keys("write").await;
    assert_eq!(keys.len(), 3);

    Ok(())
}

#[tokio::test]
async fn test_large_number_of_permissions() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    // Adiciona 1000 permissões
    for i in 0..1000 {
        controller.grant("write", &format!("user{}", i)).await?;
    }

    assert_eq!(controller.list_keys("write").await.len(), 1000);
    assert_eq!(controller.total_permissions().await, 1000);

    Ok(())
}

#[tokio::test]
async fn test_large_number_of_capabilities() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    // Cria 100 capacidades diferentes
    for i in 0..100 {
        controller.grant(&format!("cap{}", i), "user1").await?;
    }

    assert_eq!(controller.list_capabilities().await.len(), 103); // 100 + 3 padrão

    Ok(())
}

// ============================================================================
// Testes de Integração
// ============================================================================

#[tokio::test]
async fn test_complex_permission_workflow() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    // Setup inicial
    controller
        .grant_multiple("read", vec!["user1", "user2", "user3"])
        .await?;
    controller
        .grant_multiple("write", vec!["user1", "user2"])
        .await?;
    controller.grant("admin", "admin1").await?;

    // Verifica estado inicial
    assert_eq!(controller.total_permissions().await, 6);

    // Clona permissões de leitura
    controller.clone_capability("read", "read_backup").await?;

    // Remove algumas permissões
    controller.revoke("write", "user2").await?;

    // Adiciona novas permissões
    controller.grant("write", "user4").await?;

    // Limpa uma capacidade
    controller.clear_capability("admin").await?;

    // Verifica estado final
    let stats = controller.get_stats().await;
    assert_eq!(stats.get("read"), Some(&3));
    assert_eq!(stats.get("write"), Some(&2));
    assert_eq!(stats.get("read_backup"), Some(&3));

    Ok(())
}

#[tokio::test]
async fn test_save_and_export_consistency() -> Result<()> {
    let controller = SimpleAccessController::new_simple();

    controller
        .grant_multiple("read", vec!["user1", "user2"])
        .await?;
    controller.grant("write", "user3").await?;

    let exported = controller.export_permissions().await;
    let _manifest = controller.save().await?;

    // Exportar deve retornar as mesmas permissões
    assert_eq!(exported.get("read").unwrap().len(), 2);
    assert_eq!(exported.get("write").unwrap().len(), 1);

    Ok(())
}