use std::sync::{Arc, Mutex};

use crate::ui::NormalizedBoxCoords;
use super::TrackerState;

pub fn process_incoming_string(
    message: String,
    identity_boxes: &Arc<Mutex<TrackerState>>, // This goes all the way back to the GUI thread for drawing boxes
) -> core::result::Result<(), String> {
    let mut boxes: Vec<NormalizedBoxCoords> = Vec::new();

    for line in message.lines() {
        let parts: Vec<&str> = line.split(' ').collect();

        let id = parts[0]
            .replace(['[', ']'], "")
            .parse()
            .map_err(|_| "Invalid ID")?;

        if parts.len() != 3 {
            return Err("Invalid socket input format: number of parts".to_string());
        }

        let coords: Vec<&str> = parts[1].split(':').collect();
        if coords.len() != 2 {
            return Err("Invalid socket input format: coords 1".to_string());
        }
        let x1: u32 = coords[0].parse().map_err(|_| "Invalid x coordinate")?;
        let y1: u32 = coords[1].parse().map_err(|_| "Invalid y coordinate")?;

        let coords2: Vec<&str> = parts[2].split(':').collect();
        if coords2.len() != 2 {
            return Err("Invalid socket input format: coords 2".to_string());
        }

        let x2: u32 = coords2[0].parse().map_err(|_| "Invalid width")?;
        let y2: u32 = coords2[1].parse().map_err(|_| "Invalid width")?;

        boxes.push(NormalizedBoxCoords {
            id,
            x1: (x1 as f32 / 1000.0),
            x2: (x2 as f32 / 1000.0),
            y1: (y1 as f32 / 1000.0),
            y2: (y2 as f32 / 1000.0),
        });
    }

    // Replace the memory address in the mutex guard with that of the created vec above
    if let Ok(mut ib) = identity_boxes.lock() {
        let mut old_ids: Vec<u32> = ib.identity_boxes.iter().map(|x| x.id).collect();
        old_ids.sort();
        let mut new_ids: Vec<u32> = boxes.iter().map(|x| x.id).collect();
        new_ids.sort();

        ib.update_ids = new_ids == old_ids;

        // Replace the memory address in the mutex guard with that of the created vec above
        ib.identity_boxes = boxes;
    }

    Ok(())
}