mod parse;
use parse::Parse;
use surrealdb::dbs::Session;
use surrealdb::err::Error;
use surrealdb::kvs::Datastore;
use surrealdb::sql::Value;

#[tokio::test]
async fn define_statement_namespace() -> Result<(), Error> {
	let sql = "
		DEFINE NAMESPACE test;
		INFO FOR KV;
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 2);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"{
			ns: { test: 'DEFINE NAMESPACE test' },
		}",
	);
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_database() -> Result<(), Error> {
	let sql = "
		DEFINE DATABASE test;
		INFO FOR NS;
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 2);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"{
			db: { test: 'DEFINE DATABASE test' },
			nl: {},
			nt: {},
		}",
	);
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_table_drop() -> Result<(), Error> {
	let sql = "
		DEFINE TABLE test DROP;
		INFO FOR DB;
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 2);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"{
			dl: {},
			dt: {},
			sc: {},
			tb: { test: 'DEFINE TABLE test DROP SCHEMALESS' },
		}",
	);
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_table_schemaless() -> Result<(), Error> {
	let sql = "
		DEFINE TABLE test SCHEMALESS;
		INFO FOR DB;
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 2);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"{
			dl: {},
			dt: {},
			sc: {},
			tb: { test: 'DEFINE TABLE test SCHEMALESS' },
		}",
	);
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_table_schemafull() -> Result<(), Error> {
	let sql = "
		DEFINE TABLE test SCHEMAFUL;
		DEFINE TABLE test SCHEMAFULL;
		INFO FOR DB;
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 3);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"{
			dl: {},
			dt: {},
			sc: {},
			tb: { test: 'DEFINE TABLE test SCHEMAFULL' },
		}",
	);
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_table_schemaful() -> Result<(), Error> {
	let sql = "
		DEFINE TABLE test SCHEMAFUL;
		INFO FOR DB;
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 2);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"{
			dl: {},
			dt: {},
			sc: {},
			tb: { test: 'DEFINE TABLE test SCHEMAFULL' },
		}",
	);
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_event() -> Result<(), Error> {
	let sql = "
		DEFINE EVENT test ON user WHEN true THEN (
			CREATE activity SET user = $this, value = $after.email, action = $event
		);
		DEFINE EVENT test ON TABLE user WHEN true THEN (
			CREATE activity SET user = $this, value = $after.email, action = $event
		);
		INFO FOR TABLE user;
		UPDATE user:test SET email = 'info@surrealdb.com', updated_at = time::now();
		UPDATE user:test SET email = 'info@surrealdb.com', updated_at = time::now();
		UPDATE user:test SET email = 'test@surrealdb.com', updated_at = time::now();
		SELECT count() FROM activity GROUP ALL;
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 7);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"{
			ev: { test: 'DEFINE EVENT test ON user WHEN true THEN (CREATE activity SET user = $this, value = $after.email, action = $event)' },
			fd: {},
			ft: {},
			ix: {},
		}",
	);
	assert_eq!(tmp, val);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"[{
			count: 3
		}]",
	);
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_event_when_event() -> Result<(), Error> {
	let sql = "
		DEFINE EVENT test ON user WHEN $event = 'CREATE' THEN (
			CREATE activity SET user = $this, value = $after.email, action = $event
		);
		DEFINE EVENT test ON TABLE user WHEN $event = 'CREATE' THEN (
			CREATE activity SET user = $this, value = $after.email, action = $event
		);
		INFO FOR TABLE user;
		UPDATE user:test SET email = 'info@surrealdb.com', updated_at = time::now();
		UPDATE user:test SET email = 'info@surrealdb.com', updated_at = time::now();
		UPDATE user:test SET email = 'test@surrealdb.com', updated_at = time::now();
		SELECT count() FROM activity GROUP ALL;
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 7);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		r#"{
			ev: { test: "DEFINE EVENT test ON user WHEN $event = 'CREATE' THEN (CREATE activity SET user = $this, value = $after.email, action = $event)" },
			fd: {},
			ft: {},
			ix: {},
		}"#,
	);
	assert_eq!(tmp, val);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"[{
			count: 1
		}]",
	);
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_event_when_logic() -> Result<(), Error> {
	let sql = "
		DEFINE EVENT test ON user WHEN $before.email != $after.email THEN (
			CREATE activity SET user = $this, value = $after.email, action = $event
		);
		DEFINE EVENT test ON TABLE user WHEN $before.email != $after.email THEN (
			CREATE activity SET user = $this, value = $after.email, action = $event
		);
		INFO FOR TABLE user;
		UPDATE user:test SET email = 'info@surrealdb.com', updated_at = time::now();
		UPDATE user:test SET email = 'info@surrealdb.com', updated_at = time::now();
		UPDATE user:test SET email = 'test@surrealdb.com', updated_at = time::now();
		SELECT count() FROM activity GROUP ALL;
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 7);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"{
			ev: { test: 'DEFINE EVENT test ON user WHEN $before.email != $after.email THEN (CREATE activity SET user = $this, value = $after.email, action = $event)' },
			fd: {},
			ft: {},
			ix: {},
		}",
	);
	assert_eq!(tmp, val);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"[{
			count: 2
		}]",
	);
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_field() -> Result<(), Error> {
	let sql = "
		DEFINE FIELD test ON user;
		DEFINE FIELD test ON TABLE user;
		INFO FOR TABLE user;
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 3);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"{
			ev: {},
			fd: { test: 'DEFINE FIELD test ON user' },
			ft: {},
			ix: {},
		}",
	);
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_field_type() -> Result<(), Error> {
	let sql = "
		DEFINE FIELD test ON user TYPE string;
		DEFINE FIELD test ON TABLE user TYPE string;
		INFO FOR TABLE user;
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 3);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"{
			ev: {},
			fd: { test: 'DEFINE FIELD test ON user TYPE string' },
			ft: {},
			ix: {},
		}",
	);
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_field_value() -> Result<(), Error> {
	let sql = "
		DEFINE FIELD test ON user VALUE $value OR 'GBR';
		DEFINE FIELD test ON TABLE user VALUE $value OR 'GBR';
		INFO FOR TABLE user;
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 3);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		r#"{
			ev: {},
			fd: { test: "DEFINE FIELD test ON user VALUE $value OR 'GBR'" },
			ft: {},
			ix: {},
		}"#,
	);
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_field_assert() -> Result<(), Error> {
	let sql = "
		DEFINE FIELD test ON user ASSERT $value != NONE AND $value = /[A-Z]{3}/;
		DEFINE FIELD test ON TABLE user ASSERT $value != NONE AND $value = /[A-Z]{3}/;
		INFO FOR TABLE user;
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 3);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"{
			ev: {},
			fd: { test: 'DEFINE FIELD test ON user ASSERT $value != NONE AND $value = /[A-Z]{3}/' },
			ft: {},
			ix: {},
		}",
	);
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_field_type_value_assert() -> Result<(), Error> {
	let sql = "
		DEFINE FIELD test ON user TYPE string VALUE $value OR 'GBR' ASSERT $value != NONE AND $value = /[A-Z]{3}/;
		DEFINE FIELD test ON TABLE user TYPE string VALUE $value OR 'GBR' ASSERT $value != NONE AND $value = /[A-Z]{3}/;
		INFO FOR TABLE user;
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 3);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		r#"{
			ev: {},
			fd: { test: "DEFINE FIELD test ON user TYPE string VALUE $value OR 'GBR' ASSERT $value != NONE AND $value = /[A-Z]{3}/" },
			ft: {},
			ix: {},
		}"#,
	);
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_index_single_simple() -> Result<(), Error> {
	let sql = "
		CREATE user:1 SET age = 23;
		CREATE user:2 SET age = 10;
		DEFINE INDEX test ON user FIELDS age;
		DEFINE INDEX test ON user COLUMNS age;
		INFO FOR TABLE user;
		UPDATE user:1 SET age = 24;
		UPDATE user:2 SET age = 11;
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 7);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"{
			ev: {},
			fd: {},
			ft: {},
			ix: { test: 'DEFINE INDEX test ON user FIELDS age' },
		}",
	);
	assert_eq!(tmp, val);
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse("[{ id: user:1, age: 24 }]");
	assert_eq!(tmp, val);
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse("[{ id: user:2, age: 11 }]");
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_index_single() -> Result<(), Error> {
	let sql = "
		DEFINE INDEX test ON user FIELDS email;
		DEFINE INDEX test ON user COLUMNS email;
		INFO FOR TABLE user;
		CREATE user:1 SET email = 'test@surrealdb.com';
		CREATE user:2 SET email = 'test@surrealdb.com';
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 5);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"{
			ev: {},
			fd: {},
			ft: {},
			ix: { test: 'DEFINE INDEX test ON user FIELDS email' },
		}",
	);
	assert_eq!(tmp, val);
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse("[{ id: user:1, email: 'test@surrealdb.com' }]");
	assert_eq!(tmp, val);
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse("[{ id: user:2, email: 'test@surrealdb.com' }]");
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_index_multiple() -> Result<(), Error> {
	let sql = "
		DEFINE INDEX test ON user FIELDS account, email;
		DEFINE INDEX test ON user COLUMNS account, email;
		INFO FOR TABLE user;
		CREATE user:1 SET account = 'apple', email = 'test@surrealdb.com';
		CREATE user:2 SET account = 'tesla', email = 'test@surrealdb.com';
		CREATE user:3 SET account = 'apple', email = 'test@surrealdb.com';
		CREATE user:4 SET account = 'tesla', email = 'test@surrealdb.com';
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 7);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"{
			ev: {},
			fd: {},
			ft: {},
			ix: { test: 'DEFINE INDEX test ON user FIELDS account, email' },
		}",
	);
	assert_eq!(tmp, val);
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse("[{ id: user:1, account: 'apple', email: 'test@surrealdb.com' }]");
	assert_eq!(tmp, val);
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse("[{ id: user:2, account: 'tesla', email: 'test@surrealdb.com' }]");
	assert_eq!(tmp, val);
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse("[{ id: user:3, account: 'apple', email: 'test@surrealdb.com' }]");
	assert_eq!(tmp, val);
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse("[{ id: user:4, account: 'tesla', email: 'test@surrealdb.com' }]");
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_index_single_unique() -> Result<(), Error> {
	let sql = "
		DEFINE INDEX test ON user FIELDS email UNIQUE;
		DEFINE INDEX test ON user COLUMNS email UNIQUE;
		INFO FOR TABLE user;
		CREATE user:1 SET email = 'test@surrealdb.com';
		CREATE user:2 SET email = 'test@surrealdb.com';
		DELETE user:1;
		CREATE user:2 SET email = 'test@surrealdb.com';
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 7);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"{
			ev: {},
			fd: {},
			ft: {},
			ix: { test: 'DEFINE INDEX test ON user FIELDS email UNIQUE' },
		}",
	);
	assert_eq!(tmp, val);
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse("[{ id: user:1, email: 'test@surrealdb.com' }]");
	assert_eq!(tmp, val);
	//
	let tmp = res.remove(0).result;
	assert!(matches!(
		tmp.err(),
		Some(e) if e.to_string() == r#"Database index `test` already contains 'test@surrealdb.com', with record `user:2`"#
	));
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse("[{ id: user:2, email: 'test@surrealdb.com' }]");
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_index_multiple_unique() -> Result<(), Error> {
	let sql = "
		DEFINE INDEX test ON user FIELDS account, email UNIQUE;
		DEFINE INDEX test ON user COLUMNS account, email UNIQUE;
		INFO FOR TABLE user;
		CREATE user:1 SET account = 'apple', email = 'test@surrealdb.com';
		CREATE user:2 SET account = 'tesla', email = 'test@surrealdb.com';
		CREATE user:3 SET account = 'apple', email = 'test@surrealdb.com';
		CREATE user:4 SET account = 'tesla', email = 'test@surrealdb.com';
		DELETE user:1;
		CREATE user:3 SET account = 'apple', email = 'test@surrealdb.com';
		CREATE user:4 SET account = 'tesla', email = 'test@surrealdb.com';
		DELETE user:2;
		CREATE user:4 SET account = 'tesla', email = 'test@surrealdb.com';
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 12);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"{
			ev: {},
			fd: {},
			ft: {},
			ix: { test: 'DEFINE INDEX test ON user FIELDS account, email UNIQUE' },
		}",
	);
	assert_eq!(tmp, val);
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse("[{ id: user:1, account: 'apple', email: 'test@surrealdb.com' }]");
	assert_eq!(tmp, val);
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse("[{ id: user:2, account: 'tesla', email: 'test@surrealdb.com' }]");
	assert_eq!(tmp, val);
	//
	let tmp = res.remove(0).result;
	assert!(matches!(
		tmp.err(),
		Some(e) if e.to_string() == r#"Database index `test` already contains ['apple', 'test@surrealdb.com'], with record `user:3`"#
	));
	//
	let tmp = res.remove(0).result;
	assert!(matches!(
		tmp.err(),
		Some(e) if e.to_string() == r#"Database index `test` already contains ['tesla', 'test@surrealdb.com'], with record `user:4`"#
	));
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse("[{ id: user:3, account: 'apple', email: 'test@surrealdb.com' }]");
	assert_eq!(tmp, val);
	//
	let tmp = res.remove(0).result;
	assert!(matches!(
		tmp.err(),
		Some(e) if e.to_string() == r#"Database index `test` already contains ['tesla', 'test@surrealdb.com'], with record `user:4`"#
	));
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse("[{ id: user:4, account: 'tesla', email: 'test@surrealdb.com' }]");
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_index_single_unique_existing() -> Result<(), Error> {
	let sql = "
		CREATE user:1 SET email = 'info@surrealdb.com';
		CREATE user:2 SET email = 'test@surrealdb.com';
		CREATE user:3 SET email = 'test@surrealdb.com';
		DEFINE INDEX test ON user FIELDS email UNIQUE;
		DEFINE INDEX test ON user COLUMNS email UNIQUE;
		INFO FOR TABLE user;
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 6);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(matches!(
		tmp.err(),
		Some(e) if e.to_string() == r#"Database index `test` already contains 'test@surrealdb.com', with record `user:3`"#
	));
	//
	let tmp = res.remove(0).result;
	assert!(matches!(
		tmp.err(),
		Some(e) if e.to_string() == r#"Database index `test` already contains 'test@surrealdb.com', with record `user:3`"#
	));
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"{
			ev: {},
			fd: {},
			ft: {},
			ix: {},
		}",
	);
	assert_eq!(tmp, val);
	//
	Ok(())
}

#[tokio::test]
async fn define_statement_index_multiple_unique_existing() -> Result<(), Error> {
	let sql = "
		CREATE user:1 SET account = 'apple', email = 'test@surrealdb.com';
		CREATE user:2 SET account = 'tesla', email = 'test@surrealdb.com';
		CREATE user:3 SET account = 'apple', email = 'test@surrealdb.com';
		CREATE user:4 SET account = 'tesla', email = 'test@surrealdb.com';
		DEFINE INDEX test ON user FIELDS account, email UNIQUE;
		DEFINE INDEX test ON user COLUMNS account, email UNIQUE;
		INFO FOR TABLE user;
	";
	let dbs = Datastore::new("memory").await?;
	let ses = Session::for_kv().with_ns("test").with_db("test");
	let res = &mut dbs.execute(&sql, &ses, None, false).await?;
	assert_eq!(res.len(), 7);
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(tmp.is_ok());
	//
	let tmp = res.remove(0).result;
	assert!(matches!(
		tmp.err(),
		Some(e) if e.to_string() == r#"Database index `test` already contains ['apple', 'test@surrealdb.com'], with record `user:3`"#
	));
	//
	let tmp = res.remove(0).result;
	assert!(matches!(
		tmp.err(),
		Some(e) if e.to_string() == r#"Database index `test` already contains ['apple', 'test@surrealdb.com'], with record `user:3`"#
	));
	//
	let tmp = res.remove(0).result?;
	let val = Value::parse(
		"{
			ev: {},
			fd: {},
			ft: {},
			ix: {},
		}",
	);
	assert_eq!(tmp, val);
	//
	Ok(())
}