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mod execute;
mod manual;
mod method;
mod plan;
use {
	crate::executor::types::ComplexTableName, serde::Serialize, std::fmt::Debug,
	thiserror::Error as ThisError,
};
pub use {execute::JoinExecute, manual::JoinManual, method::JoinMethod, plan::JoinPlan};

#[derive(ThisError, Serialize, Debug, PartialEq)]
pub enum JoinError {
	#[error("table '{0:?}' could not be found")]
	TableNotFound(ComplexTableName),
	#[error("column '{0:?}' could not be found")]
	ColumnNotFound(Option<Vec<String>>),

	#[error("join type not yet implemented")]
	UnimplementedJoinType,
	#[error("join constraint not yet implemented")]
	UnimplementedJoinConstaint,
	#[error("table type not yet implemented")]
	UnimplementedTableType,
	#[error("amount of components in identifier not yet supported")]
	UnimplementedNumberOfComponents,

	#[error("this should be impossible, please report")]
	UnreachableCellNotFound,
	#[error("this should be impossible, please report")]
	Unreachable,
}

#[derive(Ord, Eq, PartialEq, PartialOrd, Debug, Clone)]
pub enum JoinType {
	CrossJoin, // All join: NO FILTER
	Inner,     // Reduces rows so go first ideally -- has bugs for now
	Left,
	Right,
	Full,
}

impl JoinType {
	pub fn includes_left(&self) -> bool {
		matches!(self, JoinType::Left | JoinType::Full)
	}
	pub fn includes_right(&self) -> bool {
		matches!(self, JoinType::Right | JoinType::Full)
	}
}