//! LSTM-based recognition engine

use crate::core::recognition::*;

/// LSTM-based recognition engine
pub struct LSTMRecognitionEngine {
    config: RecognitionConfig,
}

impl LSTMRecognitionEngine {
    /// Create a new LSTM recognition engine
    pub fn new(config: RecognitionConfig) -> Self {
        Self { config }
    }
}

impl RecognitionEngineTrait for LSTMRecognitionEngine {
    fn initialize(&mut self, config: &RecognitionConfig) -> anyhow::Result<()> {
        self.config = config.clone();
        // TODO: Initialize LSTM model
        Ok(())
    }

    fn recognize(
        &self,
        image_data: &[u8],
        width: u32,
        height: u32,
    ) -> anyhow::Result<RecognitionResult> {
        // TODO: Implement LSTM recognition
        Ok(RecognitionResult::new("".to_string(), 0.0))
    }

    fn recognize_region(
        &self,
        image_data: &[u8],
        width: u32,
        height: u32,
        region: &ImageRegion,
    ) -> anyhow::Result<RecognitionResult> {
        // TODO: Implement LSTM region recognition
        Ok(RecognitionResult::new("".to_string(), 0.0))
    }

    fn capabilities(&self) -> EngineCapabilities {
        EngineCapabilities {
            supported_languages: vec!["en".to_string()],
            max_image_size: (10000, 10000),
            min_image_size: (10, 10),
            supported_formats: vec!["png".to_string(), "jpg".to_string()],
            supports_character_level: true,
            supports_word_level: true,
            supports_line_level: true,
            supports_confidence: true,
            supports_alternatives: true,
        }
    }

    fn info(&self) -> EngineInfo {
        EngineInfo {
            name: "LSTM Recognition Engine".to_string(),
            version: "1.0.0".to_string(),
            description: "An LSTM-based text recognition engine".to_string(),
            author: "OCR Team".to_string(),
            license: "Apache-2.0".to_string(),
        }
    }
}
