use crate::poem::{read::Readable, recite::Reciteable, Poem};
use std::fs;
use std::path::PathBuf;

pub fn env() {
    // Use local repo path if running the debug target
    let global_rc = if cfg!(debug_assertions) {
        let mut base = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
        base.push("dist/etc/dwvshrc");
        base
    } else {
        PathBuf::from("/etc/dwvshrc")
    };

    // User defined rc file in ~
    let mut local_rc = PathBuf::from(env!("HOME"));
    local_rc.push(".dwvshrc");

    // Read, read, and recite
    rrr(global_rc);
    rrr(local_rc);
}

fn rrr(path: PathBuf) {
    let poetry = match fs::read_to_string(&path) {
        Ok(poetry) => poetry,
        Err(e) => {
            if path.to_string_lossy().contains("etc/dwvshrc") {
                eprintln!(
                    "dwvsh: unable to read global dwvshrc file: {}",
                    e.to_string().to_lowercase()
                );
            }
            return;
        }
    };

    let poem = match Poem::read(poetry) {
        Ok(poem) => poem,
        Err(e) => {
            eprintln!(
                "dwvsh: error in {}: {}",
                path.display(),
                e.to_string().to_lowercase()
            );
            return;
        }
    };

    let mut bins = vec![];
    match poem.recite(&mut bins, None) {
        Ok(_) => {}
        Err(e) => {
            eprintln!("dwvsh: {}", e.to_string().to_lowercase());
            return;
        }
    }
}