use super::*;
use lazy_static::lazy_static;
use spawning::SpawningFileAdapter;
use std::process::Command;

static EXTENSIONS: &[&str] = &["jpg", "png"];

lazy_static! {
	static ref METADATA: AdapterMeta = AdapterMeta {
		name: "tesseract".to_owned(),
		version: 1,
		description: "Uses tesseract to run OCR on images to make them searchable. May need -j1 to prevent overloading the system. Make sure you have tesseract installed.".to_owned(),
		fast_matchers: EXTENSIONS
			.iter()
			.map(|s| FastMatcher::FileExtension(s.to_string()))
			.collect(),
		slow_matchers: None
	};
}
#[derive(Default)]
pub struct TesseractAdapter {}

impl TesseractAdapter {
	pub fn new() -> TesseractAdapter {
		TesseractAdapter {}
	}
}

impl GetMetadata for TesseractAdapter {
	fn metadata(&self) -> &AdapterMeta {
		&METADATA
	}
}
impl SpawningFileAdapter for TesseractAdapter {
	fn get_exe(&self) -> &str {
		"tesseract"
	}
	fn command(&self, _filepath_hint: &Path, mut cmd: Command) -> Command {
		// rg already does threading
		cmd.env("OMP_THREAD_LIMIT", "1").arg("-").arg("-");
		cmd
	}
}