use anyhow::Error;
use fs_extra::dir::{copy, remove, CopyOptions};
use glob::glob;
use html_minifier::minify;
use std::{
    fs::{read_to_string, File},
    io::Write,
};

fn main() -> Result<(), Error> {
    println!("cargo:rerun-if-changed=build.rs");
    println!("cargo:rerun-if-changed=migrations");
    println!("cargo:rerun-if-changed=templates");

    remove("templates_min")?;

    copy(
        "templates",
        "templates_min",
        &CopyOptions::new().copy_inside(true),
    )?;

    let templates = glob("templates_min/**/*.html")?;

    for path in templates {
        let path = path?;

        if !path.is_file() {
            continue;
        }

        let html = read_to_string(&path)?;
        let minified = minify(html)?.replace('\n', "");

        File::create(path)?.write_all(minified.as_bytes())?;
    }

    Ok(())
}