// Copyright (C) 2026 Doan Luu Duc Tai <doan@luuduct.ai>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

#![doc = "Isolated WASI command entry point for chat cryptography."]

use std::io::{self, Read, Write};

fn main() -> io::Result<()> {
    let mut request = zeroize::Zeroizing::new(String::new());
    io::stdin()
        .lock()
        .take(8_388_609)
        .read_to_string(&mut request)?;
    let result = if request.is_empty() {
        stack_chat_crypto::compatibility_probe().map_err(io::Error::other)?
    } else {
        match stack_chat_crypto::dispatch(&request) {
            Ok(output) => output,
            Err(error) => serde_json::to_string(&serde_json::json!({"error":error}))?,
        }
    };
    writeln!(io::stdout().lock(), "{result}")
}