use crate::sql::part::Next;
use crate::sql::part::Part;
use crate::sql::value::Value;

impl Value {
	pub fn put(&mut self, path: &[Part], val: Value) {
		match path.first() {
			// Get the current path part
			Some(p) => match self {
				// Current path part is an object
				Value::Object(v) => match p {
					Part::Thing(t) => match v.get_mut(t.to_raw().as_str()) {
						Some(v) if v.is_some() => v.put(path.next(), val),
						_ => {
							let mut obj = Value::base();
							obj.put(path.next(), val);
							v.insert(t.to_raw(), obj);
						}
					},
					Part::Graph(g) => match v.get_mut(g.to_raw().as_str()) {
						Some(v) if v.is_some() => v.put(path.next(), val),
						_ => {
							let mut obj = Value::base();
							obj.put(path.next(), val);
							v.insert(g.to_raw(), obj);
						}
					},
					Part::Field(f) => match v.get_mut(f.to_raw().as_str()) {
						Some(v) if v.is_some() => v.put(path.next(), val),
						_ => {
							let mut obj = Value::base();
							obj.put(path.next(), val);
							v.insert(f.to_raw(), obj);
						}
					},
					_ => (),
				},
				// Current path part is an array
				Value::Array(v) => match p {
					Part::All => {
						let path = path.next();
						v.iter_mut().for_each(|v| v.put(path, val.clone()));
					}
					Part::First => {
						if let Some(v) = v.first_mut() {
							v.put(path.next(), val)
						}
					}
					Part::Last => {
						if let Some(v) = v.last_mut() {
							v.put(path.next(), val)
						}
					}
					Part::Index(i) => {
						if let Some(v) = v.get_mut(i.to_usize()) {
							v.put(path.next(), val)
						}
					}
					_ => {
						v.iter_mut().for_each(|v| v.put(path, val.clone()));
					}
				},
				// Current path part is empty
				Value::Null => {
					*self = Value::base();
					self.put(path, val)
				}
				// Current path part is empty
				Value::None => {
					*self = Value::base();
					self.put(path, val)
				}
				// Ignore everything else
				_ => (),
			},
			// No more parts so put the value
			None => {
				*self = val;
			}
		}
	}
}

#[cfg(test)]
mod tests {

	use super::*;
	use crate::sql::idiom::Idiom;
	use crate::sql::test::Parse;

	#[tokio::test]
	async fn put_none() {
		let idi = Idiom::default();
		let mut val = Value::parse("{ test: { other: null, something: 123 } }");
		let res = Value::parse("999");
		val.put(&idi, Value::from(999));
		assert_eq!(res, val);
	}

	#[tokio::test]
	async fn put_empty() {
		let idi = Idiom::parse("test");
		let mut val = Value::None;
		let res = Value::parse("{ test: 999 }");
		val.put(&idi, Value::from(999));
		assert_eq!(res, val);
	}

	#[tokio::test]
	async fn put_blank() {
		let idi = Idiom::parse("test.something");
		let mut val = Value::None;
		let res = Value::parse("{ test: { something: 999 } }");
		val.put(&idi, Value::from(999));
		assert_eq!(res, val);
	}

	#[tokio::test]
	async fn put_reput() {
		let idi = Idiom::parse("test");
		let mut val = Value::parse("{ test: { other: null, something: 123 } }");
		let res = Value::parse("{ test: 999 }");
		val.put(&idi, Value::from(999));
		assert_eq!(res, val);
	}

	#[tokio::test]
	async fn put_basic() {
		let idi = Idiom::parse("test.something");
		let mut val = Value::parse("{ test: { other: null, something: 123 } }");
		let res = Value::parse("{ test: { other: null, something: 999 } }");
		val.put(&idi, Value::from(999));
		assert_eq!(res, val);
	}

	#[tokio::test]
	async fn put_allow() {
		let idi = Idiom::parse("test.something.allow");
		let mut val = Value::parse("{ test: { other: null } }");
		let res = Value::parse("{ test: { other: null, something: { allow: 999 } } }");
		val.put(&idi, Value::from(999));
		assert_eq!(res, val);
	}

	#[tokio::test]
	async fn put_wrong() {
		let idi = Idiom::parse("test.something.wrong");
		let mut val = Value::parse("{ test: { other: null, something: 123 } }");
		let res = Value::parse("{ test: { other: null, something: 123 } }");
		val.put(&idi, Value::from(999));
		assert_eq!(res, val);
	}

	#[tokio::test]
	async fn put_other() {
		let idi = Idiom::parse("test.other.something");
		let mut val = Value::parse("{ test: { other: null, something: 123 } }");
		let res = Value::parse("{ test: { other: { something: 999 }, something: 123 } }");
		val.put(&idi, Value::from(999));
		assert_eq!(res, val);
	}

	#[tokio::test]
	async fn put_array() {
		let idi = Idiom::parse("test.something[1]");
		let mut val = Value::parse("{ test: { something: [123, 456, 789] } }");
		let res = Value::parse("{ test: { something: [123, 999, 789] } }");
		val.put(&idi, Value::from(999));
		assert_eq!(res, val);
	}

	#[tokio::test]
	async fn put_array_field() {
		let idi = Idiom::parse("test.something[1].age");
		let mut val = Value::parse("{ test: { something: [{ age: 34 }, { age: 36 }] } }");
		let res = Value::parse("{ test: { something: [{ age: 34 }, { age: 21 }] } }");
		val.put(&idi, Value::from(21));
		assert_eq!(res, val);
	}

	#[tokio::test]
	async fn put_array_fields() {
		let idi = Idiom::parse("test.something[*].age");
		let mut val = Value::parse("{ test: { something: [{ age: 34 }, { age: 36 }] } }");
		let res = Value::parse("{ test: { something: [{ age: 21 }, { age: 21 }] } }");
		val.put(&idi, Value::from(21));
		assert_eq!(res, val);
	}

	#[tokio::test]
	async fn put_array_fields_flat() {
		let idi = Idiom::parse("test.something.age");
		let mut val = Value::parse("{ test: { something: [{ age: 34 }, { age: 36 }] } }");
		let res = Value::parse("{ test: { something: [{ age: 21 }, { age: 21 }] } }");
		val.put(&idi, Value::from(21));
		assert_eq!(res, val);
	}
}