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/*
 * Vento, a CLI inventory for your files.
 * Copyright (C) 2023 Lux Aliaga
 *
 * This program 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.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 */

use crate::{
    common,
    message::{append_emoji, EmojiType},
};
use anyhow::Result;
use colored::Colorize;
use std::{fs::File, path::PathBuf};
use tar::Archive;
use xz2::read::XzDecoder;
use xz2::write::XzEncoder;

/// Exports an inventory slot into an xz tarball
pub fn export_inv(slot: &str, output: PathBuf, message: bool) -> Result<()> {
    let slotdir: PathBuf = match slot {
        "active" | "a" => common::env_config()?.active_dir,
        "inactive" | "i" => common::env_config()?.inactive_dir,
        _ => PathBuf::new(),
    };

    let archive = File::create(&output)?;
    let enc = XzEncoder::new(archive, 9);
    let mut tar = tar::Builder::new(enc);
    tar.append_dir_all("", slotdir)?;

    if message {
        println!(
            "{}{} {} {} {}",
            append_emoji(EmojiType::Success)?,
            "Exported".green(),
            match slot {
                "a" | "active" => "active".green(),
                "i" | "inactive" => "inactive".blue(),
                _ => slot.red(),
            }
            .bold(),
            "slot into".green(),
            &output.to_str().unwrap()
        );
    };
    Ok(())
}

/// Exports the Vento directory into an xz tarball
pub fn export_dir(output: PathBuf, message: bool) -> Result<()> {
    let dir: PathBuf = common::env_config()?.vento_dir;

    let archive = File::create(&output)?;
    let enc = XzEncoder::new(archive, 9);
    let mut tar = tar::Builder::new(enc);
    tar.append_dir_all("", dir)?;

    if message {
        println!(
            "{}{} {}",
            append_emoji(EmojiType::Success)?,
            "Exported Vento directory into".green(),
            &output.to_str().unwrap()
        );
    };
    Ok(())
}

/// Imports an xz tarball into an inventory slot
pub fn import_inv(input: PathBuf, slot: &str, message: bool) -> Result<()> {
    let slotdir: PathBuf = match slot {
        "active" | "a" => common::env_config()?.active_dir,
        "inactive" | "i" => common::env_config()?.inactive_dir,
        _ => PathBuf::new(),
    };

    let tar_xz = File::open(&input)?;
    let tar = XzDecoder::new(tar_xz);
    let mut archive = Archive::new(tar);
    archive.unpack(&slotdir)?;

    if message {
        println!(
            "{}{} {} {} {} {}",
            append_emoji(EmojiType::Success)?,
            "Imported".green(),
            &input.to_str().unwrap(),
            "into".green(),
            match slot {
                "a" | "active" => "active".green(),
                "i" | "inactive" => "inactive".blue(),
                _ => slot.red(),
            }
            .bold(),
            "slot".green()
        );
    };
    Ok(())
}

/// Imports an xz tarball into the Vento directory
pub fn import_dir(input: PathBuf, message: bool) -> Result<()> {
    let dir: PathBuf = common::env_config()?.vento_dir;

    let tar_xz = File::open(&input)?;
    let tar = XzDecoder::new(tar_xz);
    let mut archive = Archive::new(tar);
    archive.unpack(&dir)?;

    if message {
        println!(
            "{}{} {} {}",
            append_emoji(EmojiType::Success)?,
            "Imported".green(),
            &input.to_str().unwrap(),
            "into Vento directory".green(),
        );
    };
    Ok(())
}