wt_blk 0.2.0

use color_eyre::{eyre::bail, Report};

use crate::blk::blk_structure::BlkField;

impl BlkField {
	// Public facing formatting fn
	pub fn as_blk_text(&self) -> Result<String, Report> {
		self.inner_as_blk_text(&mut 0, true)
	}

	// TODO: Make this generic with a configuration file
	// Internal fn that actually formats
	fn inner_as_blk_text(&self, indent_level: &mut usize, is_root: bool) -> Result<String, Report> {
		match self {
			BlkField::Value(name, value) => Ok(format!("{name}:{value}")),
			BlkField::Struct(name, fields) => {
				let indent = "\t".repeat(*indent_level);
				*indent_level += 1;
				let children = fields
					.iter()
					.map(|x| {
						Ok(format!(
							"{indent}{}",
							x.inner_as_blk_text(indent_level, false)?
						))
					})
					.collect::<Result<Vec<_>, Report>>()?
					.join("\n");
				*indent_level -= 1;

				let indent_closing = "\t".repeat(indent_level.saturating_sub(1));
				Ok(if is_root {
					format!("{children}")
				} else {
					format!("{name} {{\n{children}\n{indent_closing}}}")
				})
			},
			BlkField::Merged(..) => {
				bail!("Attempted to parse merged array in blk-text function (array type is not available in the BLK format)")
			},
		}
	}
}

#[cfg(test)]
mod test {
	use crate::blk::make_strict_test;

	#[test]
	fn test_expected() {
		// For testing purposes i should probably make a better way for this
		let root = make_strict_test();
		println!("{}", root.inner_as_blk_text(&mut 0, true).unwrap());
	}
}