use crate::cnf::{INSECURE_FORWARD_RECORD_ACCESS_ERRORS, SERVER_NAME};
use crate::dbs::Session;
use crate::err::Error;
use crate::iam::issue::{config, expiration};
use crate::iam::token::Claims;
use crate::iam::Auth;
use crate::iam::{Actor, Level};
use crate::kvs::{Datastore, LockType::*, TransactionType::*};
use crate::sql::AccessType;
use crate::sql::Object;
use crate::sql::Value;
use chrono::Utc;
use jsonwebtoken::{encode, Header};
use std::sync::Arc;
use uuid::Uuid;

pub async fn signup(
	kvs: &Datastore,
	session: &mut Session,
	vars: Object,
) -> Result<Option<String>, Error> {
	// Parse the specified variables
	let ns = vars.get("NS").or_else(|| vars.get("ns"));
	let db = vars.get("DB").or_else(|| vars.get("db"));
	let ac = vars.get("AC").or_else(|| vars.get("ac"));
	// Check if the parameters exist
	match (ns, db, ac) {
		(Some(ns), Some(db), Some(ac)) => {
			// Process the provided values
			let ns = ns.to_raw_string();
			let db = db.to_raw_string();
			let ac = ac.to_raw_string();
			// Attempt to signup using specified access method
			// Currently, signup is only supported at the database level
			super::signup::db_access(kvs, session, ns, db, ac, vars).await
		}
		_ => Err(Error::InvalidSignup),
	}
}

pub async fn db_access(
	kvs: &Datastore,
	session: &mut Session,
	ns: String,
	db: String,
	ac: String,
	vars: Object,
) -> Result<Option<String>, Error> {
	// Create a new readonly transaction
	let mut tx = kvs.transaction(Read, Optimistic).await?;
	// Fetch the specified access method from storage
	let access = tx.get_db_access(&ns, &db, &ac).await;
	// Ensure that the transaction is cancelled
	tx.cancel().await?;
	// Check the provided access method exists
	match access {
		Ok(av) => {
			// Check the access method type
			// Currently, only the record access method supports signup
			match av.kind {
				AccessType::Record(at) => {
					// Check if the record access method supports issuing tokens
					let iss = match at.jwt.issue {
						Some(iss) => iss,
						_ => return Err(Error::AccessMethodMismatch),
					};
					match at.signup {
						// This record access allows signup
						Some(val) => {
							// Setup the query params
							let vars = Some(vars.0);
							// Setup the system session for finding the signup record
							let mut sess = Session::editor().with_ns(&ns).with_db(&db);
							sess.ip.clone_from(&session.ip);
							sess.or.clone_from(&session.or);
							// Compute the value with the params
							match kvs.evaluate(val, &sess, vars).await {
								// The signin value succeeded
								Ok(val) => {
									match val.record() {
										// There is a record returned
										Some(mut rid) => {
											// Create the authentication key
											let key = config(iss.alg, iss.key)?;
											// Create the authentication claim
											let claims = Claims {
												iss: Some(SERVER_NAME.to_owned()),
												iat: Some(Utc::now().timestamp()),
												nbf: Some(Utc::now().timestamp()),
												exp: expiration(av.duration.token)?,
												jti: Some(Uuid::new_v4().to_string()),
												ns: Some(ns.to_owned()),
												db: Some(db.to_owned()),
												ac: Some(ac.to_owned()),
												id: Some(rid.to_raw()),
												..Claims::default()
											};
											// AUTHENTICATE clause
											if let Some(au) = at.authenticate {
												// Setup the system session for finding the signin record
												let mut sess =
													Session::editor().with_ns(&ns).with_db(&db);
												sess.rd = Some(rid.clone().into());
												sess.tk = Some(claims.clone().into());
												sess.ip.clone_from(&session.ip);
												sess.or.clone_from(&session.or);
												// Compute the value with the params
												match kvs.evaluate(au, &sess, None).await {
    												Ok(val) => match val.record() {
														Some(id) => {
															// Update rid with result from AUTHENTICATE clause
															rid = id;
														}
														_ => return Err(Error::InvalidAuth),
													},
													Err(e) => {
														return match e {
															Error::Thrown(_) => Err(e),
															e if *INSECURE_FORWARD_RECORD_ACCESS_ERRORS => Err(e),
															_ => Err(Error::InvalidAuth),
														}
													}
												}
											}
											// Log the authenticated access method info
											trace!("Signing up with access method `{}`", ac);
											// Create the authentication token
											let enc =
												encode(&Header::new(iss.alg.into()), &claims, &key);
											// Set the authentication on the session
											session.tk = Some(claims.into());
											session.ns = Some(ns.to_owned());
											session.db = Some(db.to_owned());
											session.ac = Some(ac.to_owned());
											session.rd = Some(Value::from(rid.to_owned()));
											session.exp = expiration(av.duration.session)?;
											session.au = Arc::new(Auth::new(Actor::new(
												rid.to_string(),
												Default::default(),
												Level::Record(ns, db, rid.to_string()),
											)));
											// Check the authentication token
											match enc {
												// The auth token was created successfully
												Ok(tk) => Ok(Some(tk)),
												_ => Err(Error::TokenMakingFailed),
											}
										}
										_ => Err(Error::NoRecordFound),
									}
								}
								Err(e) => match e {
									Error::Thrown(_) => Err(e),
									e if *INSECURE_FORWARD_RECORD_ACCESS_ERRORS => Err(e),
									_ => Err(Error::AccessRecordSignupQueryFailed),
								},
							}
						}
						_ => Err(Error::AccessRecordNoSignup),
					}
				}
				_ => Err(Error::AccessMethodMismatch),
			}
		}
		_ => Err(Error::AccessNotFound),
	}
}

#[cfg(test)]
mod tests {
	use super::*;
	use crate::iam::Role;
	use chrono::Duration;
	use std::collections::HashMap;

	#[tokio::test]
	async fn test_record_signup() {
		// Test with valid parameters
		{
			let ds = Datastore::new("memory").await.unwrap();
			let sess = Session::owner().with_ns("test").with_db("test");
			ds.execute(
				r#"
				DEFINE ACCESS user ON DATABASE TYPE RECORD
					SIGNIN (
						SELECT * FROM user WHERE name = $user AND crypto::argon2::compare(pass, $pass)
					)
					SIGNUP (
						CREATE user CONTENT {
							name: $user,
							pass: crypto::argon2::generate($pass)
						}
					)
					DURATION FOR SESSION 2h
				;
				"#,
				&sess,
				None,
			)
			.await
			.unwrap();

			// Signin with the user
			let mut sess = Session {
				ns: Some("test".to_string()),
				db: Some("test".to_string()),
				..Default::default()
			};
			let mut vars: HashMap<&str, Value> = HashMap::new();
			vars.insert("user", "user".into());
			vars.insert("pass", "pass".into());
			let res = db_access(
				&ds,
				&mut sess,
				"test".to_string(),
				"test".to_string(),
				"user".to_string(),
				vars.into(),
			)
			.await;

			assert!(res.is_ok(), "Failed to signup: {:?}", res);
			assert_eq!(sess.ns, Some("test".to_string()));
			assert_eq!(sess.db, Some("test".to_string()));
			assert!(sess.au.id().starts_with("user:"));
			assert!(sess.au.is_record());
			assert_eq!(sess.au.level().ns(), Some("test"));
			assert_eq!(sess.au.level().db(), Some("test"));
			// Record users should not have roles.
			assert!(!sess.au.has_role(&Role::Viewer), "Auth user expected to not have Viewer role");
			assert!(!sess.au.has_role(&Role::Editor), "Auth user expected to not have Editor role");
			assert!(!sess.au.has_role(&Role::Owner), "Auth user expected to not have Owner role");
			// Session expiration should match the defined duration
			let exp = sess.exp.unwrap();
			// Expiration should match the current time plus session duration with some margin
			let min_exp = (Utc::now() + Duration::hours(2) - Duration::seconds(10)).timestamp();
			let max_exp = (Utc::now() + Duration::hours(2) + Duration::seconds(10)).timestamp();
			assert!(
				exp > min_exp && exp < max_exp,
				"Session expiration is expected to match the defined duration"
			);
		}

		// Test with invalid parameters
		{
			let ds = Datastore::new("memory").await.unwrap();
			let sess = Session::owner().with_ns("test").with_db("test");
			ds.execute(
				r#"
				DEFINE ACCESS user ON DATABASE TYPE RECORD
					SIGNIN (
						SELECT * FROM user WHERE name = $user AND crypto::argon2::compare(pass, $pass)
					)
					SIGNUP (
						CREATE user CONTENT {
							name: $user,
							pass: crypto::argon2::generate($pass)
						}
					)
					DURATION FOR SESSION 2h
				;
				"#,
				&sess,
				None,
			)
			.await
			.unwrap();

			// Signin with the user
			let mut sess = Session {
				ns: Some("test".to_string()),
				db: Some("test".to_string()),
				..Default::default()
			};
			let mut vars: HashMap<&str, Value> = HashMap::new();
			// Password is missing
			vars.insert("user", "user".into());
			let res = db_access(
				&ds,
				&mut sess,
				"test".to_string(),
				"test".to_string(),
				"user".to_string(),
				vars.into(),
			)
			.await;

			assert!(res.is_err(), "Unexpected successful signup: {:?}", res);
		}
	}

	#[tokio::test]
	async fn test_record_signup_with_jwt_issuer() {
		use jsonwebtoken::{decode, Algorithm, DecodingKey, Validation};
		// Test with valid parameters
		{
			let public_key = r#"-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu1SU1LfVLPHCozMxH2Mo
4lgOEePzNm0tRgeLezV6ffAt0gunVTLw7onLRnrq0/IzW7yWR7QkrmBL7jTKEn5u
+qKhbwKfBstIs+bMY2Zkp18gnTxKLxoS2tFczGkPLPgizskuemMghRniWaoLcyeh
kd3qqGElvW/VDL5AaWTg0nLVkjRo9z+40RQzuVaE8AkAFmxZzow3x+VJYKdjykkJ
0iT9wCS0DRTXu269V264Vf/3jvredZiKRkgwlL9xNAwxXFg0x/XFw005UWVRIkdg
cKWTjpBP2dPwVZ4WWC+9aGVd+Gyn1o0CLelf4rEjGoXbAAEgAqeGUxrcIlbjXfbc
mwIDAQAB
-----END PUBLIC KEY-----"#;
			let private_key = r#"-----BEGIN PRIVATE KEY-----
MIIEvwIBADANBgkqhkiG9w0BAQEFAASCBKkwggSlAgEAAoIBAQC7VJTUt9Us8cKj
MzEfYyjiWA4R4/M2bS1GB4t7NXp98C3SC6dVMvDuictGeurT8jNbvJZHtCSuYEvu
NMoSfm76oqFvAp8Gy0iz5sxjZmSnXyCdPEovGhLa0VzMaQ8s+CLOyS56YyCFGeJZ
qgtzJ6GR3eqoYSW9b9UMvkBpZODSctWSNGj3P7jRFDO5VoTwCQAWbFnOjDfH5Ulg
p2PKSQnSJP3AJLQNFNe7br1XbrhV//eO+t51mIpGSDCUv3E0DDFcWDTH9cXDTTlR
ZVEiR2BwpZOOkE/Z0/BVnhZYL71oZV34bKfWjQIt6V/isSMahdsAASACp4ZTGtwi
VuNd9tybAgMBAAECggEBAKTmjaS6tkK8BlPXClTQ2vpz/N6uxDeS35mXpqasqskV
laAidgg/sWqpjXDbXr93otIMLlWsM+X0CqMDgSXKejLS2jx4GDjI1ZTXg++0AMJ8
sJ74pWzVDOfmCEQ/7wXs3+cbnXhKriO8Z036q92Qc1+N87SI38nkGa0ABH9CN83H
mQqt4fB7UdHzuIRe/me2PGhIq5ZBzj6h3BpoPGzEP+x3l9YmK8t/1cN0pqI+dQwY
dgfGjackLu/2qH80MCF7IyQaseZUOJyKrCLtSD/Iixv/hzDEUPfOCjFDgTpzf3cw
ta8+oE4wHCo1iI1/4TlPkwmXx4qSXtmw4aQPz7IDQvECgYEA8KNThCO2gsC2I9PQ
DM/8Cw0O983WCDY+oi+7JPiNAJwv5DYBqEZB1QYdj06YD16XlC/HAZMsMku1na2T
N0driwenQQWzoev3g2S7gRDoS/FCJSI3jJ+kjgtaA7Qmzlgk1TxODN+G1H91HW7t
0l7VnL27IWyYo2qRRK3jzxqUiPUCgYEAx0oQs2reBQGMVZnApD1jeq7n4MvNLcPv
t8b/eU9iUv6Y4Mj0Suo/AU8lYZXm8ubbqAlwz2VSVunD2tOplHyMUrtCtObAfVDU
AhCndKaA9gApgfb3xw1IKbuQ1u4IF1FJl3VtumfQn//LiH1B3rXhcdyo3/vIttEk
48RakUKClU8CgYEAzV7W3COOlDDcQd935DdtKBFRAPRPAlspQUnzMi5eSHMD/ISL
DY5IiQHbIH83D4bvXq0X7qQoSBSNP7Dvv3HYuqMhf0DaegrlBuJllFVVq9qPVRnK
xt1Il2HgxOBvbhOT+9in1BzA+YJ99UzC85O0Qz06A+CmtHEy4aZ2kj5hHjECgYEA
mNS4+A8Fkss8Js1RieK2LniBxMgmYml3pfVLKGnzmng7H2+cwPLhPIzIuwytXywh
2bzbsYEfYx3EoEVgMEpPhoarQnYPukrJO4gwE2o5Te6T5mJSZGlQJQj9q4ZB2Dfz
et6INsK0oG8XVGXSpQvQh3RUYekCZQkBBFcpqWpbIEsCgYAnM3DQf3FJoSnXaMhr
VBIovic5l0xFkEHskAjFTevO86Fsz1C2aSeRKSqGFoOQ0tmJzBEs1R6KqnHInicD
TQrKhArgLXX4v3CddjfTRJkFWDbE/CkvKZNOrcf1nhaGCPspRJj2KUkj1Fhl9Cnc
dn/RsYEONbwQSjIfMPkvxF+8HQ==
-----END PRIVATE KEY-----"#;
			let ds = Datastore::new("memory").await.unwrap();
			let sess = Session::owner().with_ns("test").with_db("test");
			ds.execute(
				&format!(
					r#"
				DEFINE ACCESS user ON DATABASE TYPE RECORD
					SIGNIN (
						SELECT * FROM user WHERE name = $user AND crypto::argon2::compare(pass, $pass)
					)
					SIGNUP (
						CREATE user CONTENT {{
							name: $user,
							pass: crypto::argon2::generate($pass)
						}}
					)
				    WITH JWT ALGORITHM RS256 KEY '{public_key}'
				        WITH ISSUER KEY '{private_key}'
					DURATION FOR SESSION 2h, FOR TOKEN 15m
				;

				CREATE user:test CONTENT {{
					name: 'user',
					pass: crypto::argon2::generate('pass')
				}}
				"#
				),
				&sess,
				None,
			)
			.await
			.unwrap();

			// Signin with the user
			let mut sess = Session {
				ns: Some("test".to_string()),
				db: Some("test".to_string()),
				..Default::default()
			};
			let mut vars: HashMap<&str, Value> = HashMap::new();
			vars.insert("user", "user".into());
			vars.insert("pass", "pass".into());
			let res = db_access(
				&ds,
				&mut sess,
				"test".to_string(),
				"test".to_string(),
				"user".to_string(),
				vars.into(),
			)
			.await;

			assert!(res.is_ok(), "Failed to signup: {:?}", res);
			assert_eq!(sess.ns, Some("test".to_string()));
			assert_eq!(sess.db, Some("test".to_string()));
			assert!(sess.au.id().starts_with("user:"));
			assert!(sess.au.is_record());
			assert_eq!(sess.au.level().ns(), Some("test"));
			assert_eq!(sess.au.level().db(), Some("test"));
			// Record users should not have roles.
			assert!(!sess.au.has_role(&Role::Viewer), "Auth user expected to not have Viewer role");
			assert!(!sess.au.has_role(&Role::Editor), "Auth user expected to not have Editor role");
			assert!(!sess.au.has_role(&Role::Owner), "Auth user expected to not have Owner role");
			// Session expiration should always be set for tokens issued by SurrealDB
			let exp = sess.exp.unwrap();
			// Expiration should match the current time plus session duration with some margin
			let min_sess_exp =
				(Utc::now() + Duration::hours(2) - Duration::seconds(10)).timestamp();
			let max_sess_exp =
				(Utc::now() + Duration::hours(2) + Duration::seconds(10)).timestamp();
			assert!(
				exp > min_sess_exp && exp < max_sess_exp,
				"Session expiration is expected to follow access method duration"
			);

			// Decode token and check that it has been issued as intended
			if let Ok(Some(tk)) = res {
				// Check that token can be verified with the defined algorithm
				let val = Validation::new(Algorithm::RS256);
				// Check that token can be verified with the defined public key
				let token_data = decode::<Claims>(
					&tk,
					&DecodingKey::from_rsa_pem(public_key.as_ref()).unwrap(),
					&val,
				)
				.unwrap();
				// Check that token has been issued with the defined algorithm
				assert_eq!(token_data.header.alg, Algorithm::RS256);
				// Check that token expiration matches the defined duration
				// Expiration should match the current time plus token duration with some margin
				let exp = match token_data.claims.exp {
					Some(exp) => exp,
					_ => panic!("Token is missing expiration claim"),
				};
				let min_tk_exp =
					(Utc::now() + Duration::minutes(15) - Duration::seconds(10)).timestamp();
				let max_tk_exp =
					(Utc::now() + Duration::minutes(15) + Duration::seconds(10)).timestamp();
				assert!(
					exp > min_tk_exp && exp < max_tk_exp,
					"Token expiration is expected to follow issuer duration"
				);
				// Check required token claims
				assert_eq!(token_data.claims.ns, Some("test".to_string()));
				assert_eq!(token_data.claims.db, Some("test".to_string()));
				assert!(token_data.claims.id.unwrap().starts_with("user:"));
				assert_eq!(token_data.claims.ac, Some("user".to_string()));
			} else {
				panic!("Token could not be extracted from result")
			}
		}
	}

	#[tokio::test]
	async fn test_signup_record_and_authenticate_clause() {
		// Test with correct credentials
		{
			let ds = Datastore::new("memory").await.unwrap();
			let sess = Session::owner().with_ns("test").with_db("test");
			ds.execute(
				r#"
				DEFINE ACCESS user ON DATABASE TYPE RECORD
					SIGNUP (
						CREATE type::thing('user', $id)
					)
					AUTHENTICATE (
						-- Simple example increasing the record identifier by one
					    SELECT * FROM type::thing('user', meta::id($auth) + 1)
					)
					DURATION FOR SESSION 2h
				;

				CREATE user:2;
				"#,
				&sess,
				None,
			)
			.await
			.unwrap();

			// Signin with the user
			let mut sess = Session {
				ns: Some("test".to_string()),
				db: Some("test".to_string()),
				..Default::default()
			};
			let mut vars: HashMap<&str, Value> = HashMap::new();
			vars.insert("id", 1.into());
			let res = db_access(
				&ds,
				&mut sess,
				"test".to_string(),
				"test".to_string(),
				"user".to_string(),
				vars.into(),
			)
			.await;

			assert!(res.is_ok(), "Failed to signup with credentials: {:?}", res);
			assert_eq!(sess.ns, Some("test".to_string()));
			assert_eq!(sess.db, Some("test".to_string()));
			assert_eq!(sess.ac, Some("user".to_string()));
			assert_eq!(sess.au.id(), "user:2");
			assert!(sess.au.is_record());
			assert_eq!(sess.au.level().ns(), Some("test"));
			assert_eq!(sess.au.level().db(), Some("test"));
			assert_eq!(sess.au.level().id(), Some("user:2"));
			// Record users should not have roles
			assert!(!sess.au.has_role(&Role::Viewer), "Auth user expected to not have Viewer role");
			assert!(!sess.au.has_role(&Role::Editor), "Auth user expected to not have Editor role");
			assert!(!sess.au.has_role(&Role::Owner), "Auth user expected to not have Owner role");
			// Expiration should match the defined duration
			let exp = sess.exp.unwrap();
			// Expiration should match the current time plus session duration with some margin
			let min_exp = (Utc::now() + Duration::hours(2) - Duration::seconds(10)).timestamp();
			let max_exp = (Utc::now() + Duration::hours(2) + Duration::seconds(10)).timestamp();
			assert!(
				exp > min_exp && exp < max_exp,
				"Session expiration is expected to follow the defined duration"
			);
		}

		// Test with correct credentials and "realistic" scenario
		{
			let ds = Datastore::new("memory").await.unwrap();
			let sess = Session::owner().with_ns("test").with_db("test");
			ds.execute(
				r#"
				DEFINE ACCESS owner ON DATABASE TYPE RECORD
					SIGNUP (
						-- Allow anyone to sign up as a new company
						-- This automatically creates an owner with the same credentials
						CREATE company CONTENT {
							email: $email,
							pass: crypto::argon2::generate($pass),
							owner: (CREATE employee CONTENT {
								email: $email,
								pass: $pass,
							}),
						}
					)
					SIGNIN (
						-- Allow company owners to log in directly with the company account
						SELECT * FROM company WHERE email = $email AND crypto::argon2::compare(pass, $pass)
					)
					AUTHENTICATE (
						-- If logging in with a company account, the session will be authenticated as the first owner
						IF meta::tb($auth) = "company" {
							RETURN SELECT VALUE owner FROM company WHERE id = $auth
						}
					)
					DURATION FOR SESSION 2h
				;

				CREATE company:1 CONTENT {
					email: "info@example.com",
					pass: crypto::argon2::generate("company-password"),
					owner: employee:2,
				};
				CREATE employee:1 CONTENT {
					email: "member@example.com",
					pass: crypto::argon2::generate("member-password"),
				};
				CREATE employee:2 CONTENT {
					email: "owner@example.com",
					pass: crypto::argon2::generate("owner-password"),
				};
				"#,
				&sess,
				None,
			)
			.await
			.unwrap();

			// Signin with the user
			let mut sess = Session {
				ns: Some("test".to_string()),
				db: Some("test".to_string()),
				..Default::default()
			};
			let mut vars: HashMap<&str, Value> = HashMap::new();
			vars.insert("email", "info@example.com".into());
			vars.insert("pass", "company-password".into());
			let res = db_access(
				&ds,
				&mut sess,
				"test".to_string(),
				"test".to_string(),
				"owner".to_string(),
				vars.into(),
			)
			.await;

			assert!(res.is_ok(), "Failed to signin with credentials: {:?}", res);
			assert_eq!(sess.ns, Some("test".to_string()));
			assert_eq!(sess.db, Some("test".to_string()));
			assert_eq!(sess.ac, Some("owner".to_string()));
			assert!(sess.au.id().starts_with("employee:"));
			assert!(sess.au.is_record());
			assert_eq!(sess.au.level().ns(), Some("test"));
			assert_eq!(sess.au.level().db(), Some("test"));
			assert!(sess.au.level().id().unwrap().starts_with("employee:"));
			// Record users should not have roles
			assert!(!sess.au.has_role(&Role::Viewer), "Auth user expected to not have Viewer role");
			assert!(!sess.au.has_role(&Role::Editor), "Auth user expected to not have Editor role");
			assert!(!sess.au.has_role(&Role::Owner), "Auth user expected to not have Owner role");
			// Expiration should match the defined duration
			let exp = sess.exp.unwrap();
			// Expiration should match the current time plus session duration with some margin
			let min_exp = (Utc::now() + Duration::hours(2) - Duration::seconds(10)).timestamp();
			let max_exp = (Utc::now() + Duration::hours(2) + Duration::seconds(10)).timestamp();
			assert!(
				exp > min_exp && exp < max_exp,
				"Session expiration is expected to follow the defined duration"
			);
		}

		// Test being able to fail authentication
		{
			let ds = Datastore::new("memory").await.unwrap();
			let sess = Session::owner().with_ns("test").with_db("test");
			ds.execute(
				r#"
				DEFINE ACCESS user ON DATABASE TYPE RECORD
					SIGNUP (
					   CREATE type::thing('user', $id)
					)
					AUTHENTICATE {
					    -- Not just signin, this clause runs across signin, signup and authenticate, which makes it a nice place to centralize logic
					    IF !$auth.enabled {
							THROW "This user is not enabled";
						};

						-- Always need to return the user id back, otherwise auth generically fails
						RETURN $auth;
					}
					DURATION FOR SESSION 2h
				;
				"#,
				&sess,
				None,
			)
			.await
			.unwrap();

			// Signin with the user
			let mut sess = Session {
				ns: Some("test".to_string()),
				db: Some("test".to_string()),
				..Default::default()
			};
			let mut vars: HashMap<&str, Value> = HashMap::new();
			vars.insert("id", 1.into());
			let res = db_access(
				&ds,
				&mut sess,
				"test".to_string(),
				"test".to_string(),
				"user".to_string(),
				vars.into(),
			)
			.await;

			match res {
				Err(Error::Thrown(e)) if e == "This user is not enabled" => {} // ok
				res => panic!(
				    "Expected authentication to failed due to user not being enabled, but instead received: {:?}",
					res
				),
			}
		}

		// Test AUTHENTICATE clause not returning a value
		{
			let ds = Datastore::new("memory").await.unwrap();
			let sess = Session::owner().with_ns("test").with_db("test");
			ds.execute(
				r#"
				DEFINE ACCESS user ON DATABASE TYPE RECORD
					SIGNUP (
					   CREATE type::thing('user', $id)
					)
					AUTHENTICATE {}
					DURATION FOR SESSION 2h
				;
				"#,
				&sess,
				None,
			)
			.await
			.unwrap();

			// Signin with the user
			let mut sess = Session {
				ns: Some("test".to_string()),
				db: Some("test".to_string()),
				..Default::default()
			};
			let mut vars: HashMap<&str, Value> = HashMap::new();
			vars.insert("id", 1.into());
			let res = db_access(
				&ds,
				&mut sess,
				"test".to_string(),
				"test".to_string(),
				"user".to_string(),
				vars.into(),
			)
			.await;

			match res {
				Err(Error::InvalidAuth) => {} // ok
				res => panic!(
					"Expected authentication to generally fail, but instead received: {:?}",
					res
				),
			}
		}
	}
}