#!/usr/bin/env rust-script
//! This is a regular crate doc comment, but it also contains a partial
//! Cargo manifest.  Note the use of a *fenced* code block, and the
//! `cargo` "language".
//!
//! ```cargo
//! [dependencies]
//! encre-css = "0.14"
//! walkdir = "2"
//! ```

use std::{
    collections::BTreeSet,
    fs::{self, File},
    io::{self, Write},
    path::Path,
};

use encre_css::{utils::split_ignore_arbitrary, Config, Scanner};
use walkdir::WalkDir;

fn main() -> io::Result<()> {
    // Define the source directory to scan
    let source_dir = "./"; // Change this to your source directory

    eprintln!("Scanning directory: {}", source_dir);

    // Walk through the directory structure
    let contents = WalkDir::new(source_dir)
        .into_iter()
        .filter_map(|e| e.ok())
        .filter(|e| {
            e.file_type().is_file()
                && e.path()
                    .extension()
                    .map_or(false, |ext| ext == "rs" || ext == "scss")
        })
        .map(|entry| {
            let path = entry.path();
            eprintln!("Processing file: {}", path.display());
            let content = fs::read_to_string(path).expect("Failed to read");
            let bx = Box::new(content);
            let static_ref: &'static str = Box::leak(bx);
            static_ref
        });

    let mut config = Config::default();
    config.scanner = Scanner::from_fn(|val| {
        let mut is_arbitrary = false;

        val.split(|ch| {
            // Escape all characters in arbitrary values prefixed by a dash (used to avoid
            // ignoring values in, for example, JS arrays, given that they are defined
            // using square brackets)
            match ch {
                '[' => {
                    is_arbitrary = true;
                    false
                }
                ']' => {
                    is_arbitrary = false;
                    false
                }
                _ => {
                    ch == ' '
                        || (!is_arbitrary
                            && (ch == '.' || ch == '\'' || ch == '"' || ch == '`' || ch == '\n'))
                }
            }
        })
        .collect::<BTreeSet<&str>>()
    });

    let generated = encre_css::generate(contents, &config);

    println!("{generated}");

    Ok(())
}