snarkvm 0.9.11

// Copyright (C) 2019-2022 Aleo Systems Inc.
// This file is part of the snarkVM library.

// The snarkVM library is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// The snarkVM library 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 General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with the snarkVM library. If not, see <https://www.gnu.org/licenses/>.

use crate::cli::Updater;

use anyhow::Result;
use clap::Parser;

#[derive(Debug, Parser)]
#[clap(name = "snarkVM", author = "The Aleo Team <hello@aleo.org>", setting = clap::AppSettings::ColoredHelp)]
pub struct CLI {
    /// Specify the verbosity [options: 0, 1, 2, 3]
    #[clap(default_value = "2", short, long)]
    pub verbosity: u8,
    /// Specify a subcommand.
    #[clap(subcommand)]
    pub command: Command,
}

#[derive(Debug, Parser)]
pub enum Command {
    /// Update snarkVM to the latest version
    Update {
        /// Lists all available versions of snarkVM
        #[clap(short = 'l', long)]
        list: bool,
        /// Suppress outputs to terminal
        #[clap(short = 'q', long)]
        quiet: bool,
    },
}

impl Command {
    /// Parse the command.
    pub fn start(&self) -> Result<String> {
        match self {
            Command::Update { list, quiet } => match list {
                true => match Updater::show_available_releases() {
                    Ok(output) => Ok(output),
                    Err(error) => Ok(format!("Failed to list the available versions of snarkVM\n{error}\n")),
                },
                false => {
                    let result = Updater::update_to_latest_release(!quiet);
                    if !quiet {
                        match result {
                            Ok(status) => {
                                if status.uptodate() {
                                    Ok("\nsnarkVM is already on the latest version".to_string())
                                } else if status.updated() {
                                    Ok(format!("\nsnarkVM has updated to version {}", status.version()))
                                } else {
                                    Ok("".to_string())
                                }
                            }
                            Err(e) => Ok(format!("\nFailed to update snarkVM to the latest version\n{}\n", e)),
                        }
                    } else {
                        Ok("".to_string())
                    }
                }
            }, // _ => Err(anyhow!("\nUnknown command\n")),
        }
    }
}