surrealdb-core 3.3.1

use anyhow::Result;
use reblessive::tree::Stk;

use crate::ctx::FrozenContext;
use crate::dbs::Options;
use crate::exe::FlowResultExt as _;
use crate::expr::part::Part;
use crate::val::{Number, TrySub, Value};

/// Asynchronous method for decrementing a field in a `Value`
pub(crate) async fn value_decrement(
	this: &mut Value,
	stk: &mut Stk,
	ctx: &FrozenContext,
	opt: &Options,
	path: &[Part],
	val: Value,
) -> Result<()> {
	match crate::legacy::value_get(this, stk, ctx, opt, None, path).await.catch_return()? {
		Value::Array(v) => match val {
			Value::Array(x) => {
				crate::legacy::value_set(this, stk, ctx, opt, path, Value::from(v.remove_all(&x.0)))
					.await
			}
			Value::Set(x) => {
				crate::legacy::value_set(
					this,
					stk,
					ctx,
					opt,
					path,
					Value::from(v.remove_all_set(&x)),
				)
				.await
			}
			x => {
				crate::legacy::value_set(this, stk, ctx, opt, path, Value::from(v.remove_value(&x)))
					.await
			}
		},
		Value::Set(mut v) => match val {
			Value::Array(x) => {
				for item in x {
					v.remove(&item);
				}
				crate::legacy::value_set(this, stk, ctx, opt, path, Value::from(v)).await
			}
			Value::Set(x) => {
				for item in x {
					v.remove(&item);
				}
				crate::legacy::value_set(this, stk, ctx, opt, path, Value::from(v)).await
			}
			x => {
				v.remove(&x);
				crate::legacy::value_set(this, stk, ctx, opt, path, Value::from(v)).await
			}
		},
		Value::None => match val {
			Value::Number(x) => {
				crate::legacy::value_set(
					this,
					stk,
					ctx,
					opt,
					path,
					Value::from(Number::from(0) - x),
				)
				.await
			}
			_ => Ok(()),
		},
		v => {
			let result = v.try_sub(val)?;
			crate::legacy::value_set(this, stk, ctx, opt, path, result).await
		}
	}
}

#[cfg(test)]
mod tests {

	use crate::dbs::test::mock;
	use crate::expr::idiom::Idiom;
	use crate::syn;
	use crate::val::Value;

	macro_rules! parse_val {
		($input:expr) => {
			crate::val::convert_public_value_to_internal(syn::value($input).unwrap())
		};
	}

	#[tokio::test]
	async fn decrement_none() {
		let (ctx, opt) = mock().await;
		let idi: Idiom = syn::idiom("other").unwrap().into();
		let mut val = parse_val!("{ test: 100 }");
		let res = parse_val!("{ test: 100, other: -10 }");
		let mut stack = reblessive::TreeStack::new();
		stack
			.enter(|stk| {
				crate::legacy::value_decrement(&mut val, stk, &ctx, &opt, &idi, Value::from(10))
			})
			.finish()
			.await
			.unwrap();
		assert_eq!(res, val);
	}

	#[tokio::test]
	async fn decrement_number() {
		let (ctx, opt) = mock().await;
		let idi: Idiom = syn::idiom("test").unwrap().into();
		let mut val = parse_val!("{ test: 100 }");
		let res = parse_val!("{ test: 90 }");
		let mut stack = reblessive::TreeStack::new();
		stack
			.enter(|stk| {
				crate::legacy::value_decrement(&mut val, stk, &ctx, &opt, &idi, Value::from(10))
			})
			.finish()
			.await
			.unwrap();
		assert_eq!(res, val);
	}

	#[tokio::test]
	async fn decrement_object_number_errors() {
		let (ctx, opt) = mock().await;
		let idi: Idiom = syn::idiom("test").unwrap().into();
		let mut val = parse_val!("{ test: { a: 1 } }");
		let mut stack = reblessive::TreeStack::new();
		let result = stack
			.enter(|stk| {
				crate::legacy::value_decrement(&mut val, stk, &ctx, &opt, &idi, Value::from(10))
			})
			.finish()
			.await;
		assert!(result.is_err());
	}

	#[tokio::test]
	async fn decrement_number_string_errors() {
		let (ctx, opt) = mock().await;
		let idi: Idiom = syn::idiom("test").unwrap().into();
		let mut val = parse_val!("{ test: 100 }");
		let mut stack = reblessive::TreeStack::new();
		let result = stack
			.enter(|stk| {
				crate::legacy::value_decrement(
					&mut val,
					stk,
					&ctx,
					&opt,
					&idi,
					Value::from("hello"),
				)
			})
			.finish()
			.await;
		assert!(result.is_err());
	}

	#[tokio::test]
	async fn decrement_array_number() {
		let (ctx, opt) = mock().await;
		let idi: Idiom = syn::idiom("test[1]").unwrap().into();
		let mut val = parse_val!("{ test: [100, 200, 300] }");
		let res = parse_val!("{ test: [100, 190, 300] }");
		let mut stack = reblessive::TreeStack::new();
		stack
			.enter(|stk| {
				crate::legacy::value_decrement(&mut val, stk, &ctx, &opt, &idi, Value::from(10))
			})
			.finish()
			.await
			.unwrap();
		assert_eq!(res, val);
	}

	#[tokio::test]
	async fn decrement_array_value() {
		let (ctx, opt) = mock().await;
		let idi: Idiom = syn::idiom("test").unwrap().into();
		let mut val = parse_val!("{ test: [100, 200, 300] }");
		let res = parse_val!("{ test: [100, 300] }");
		let mut stack = reblessive::TreeStack::new();
		stack
			.enter(|stk| {
				crate::legacy::value_decrement(&mut val, stk, &ctx, &opt, &idi, Value::from(200))
			})
			.finish()
			.await
			.unwrap();
		assert_eq!(res, val);
	}

	#[tokio::test]
	async fn decrement_array_array() {
		let (ctx, opt) = mock().await;
		let idi: Idiom = syn::idiom("test").unwrap().into();
		let mut val = parse_val!("{ test: [100, 200, 300] }");
		let res = parse_val!("{ test: [200] }");
		let mut stack = reblessive::TreeStack::new();
		stack
			.enter(|stk| {
				crate::legacy::value_decrement(
					&mut val,
					stk,
					&ctx,
					&opt,
					&idi,
					parse_val!("[100,300]"),
				)
			})
			.finish()
			.await
			.unwrap();
		assert_eq!(res, val);
	}
}