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//
// Wildland Project
//
// Copyright © 2022 Golem Foundation
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 3 as published by
// the Free Software Foundation.
//
// 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 anyhow::Context as _;
use reedline_repl_rs::clap::{Arg, ArgMatches, Command};
use reedline_repl_rs::Repl;
use s_macro::s;
use wildland_corex::LocalSecureStorage;

use super::sledlss::SledLss;
use crate::{match_context, Context};

#[tracing::instrument(level = "trace", err(Debug), skip(args, context))]
fn h_lss_create(args: ArgMatches, context: &mut Context) -> anyhow::Result<Option<String>> {
    match_context!(context, lss => None, cargo => None)?;
    let path = args
        .get_one::<String>("path")
        .context("path not provided")?;
    context.set_lss(SledLss::new(s!(path)))?;
    Ok(Some(s!("global lss instance created")))
}

#[tracing::instrument(level = "trace", err(Debug), skip(args, context))]
fn h_lss_insert(args: ArgMatches, context: &mut Context) -> anyhow::Result<Option<String>> {
    let lss = match_context!(context, lss => Some(_))?;
    let key = args.get_one::<String>("key").context("key not provided")?;
    let value = args
        .get_one::<String>("value")
        .context("value not provided")?;
    lss.insert(s!(key), s!(value))?;
    Ok(Some(s!("key inserted")))
}

#[tracing::instrument(level = "trace", err(Debug), skip(args, context))]
fn h_lss_get(args: ArgMatches, context: &mut Context) -> anyhow::Result<Option<String>> {
    let lss = match_context!(context, lss => Some(_))?;
    let key = args.get_one::<String>("key").context("key not provided")?;
    let value = lss.get(s!(key))?;
    Ok(value)
}

#[tracing::instrument(level = "trace", err(Debug), skip(args, context))]
fn h_lss_contains_key(args: ArgMatches, context: &mut Context) -> anyhow::Result<Option<String>> {
    let lss = match_context!(context, lss => Some(_))?;
    let key = args.get_one::<String>("key").context("key not provided")?;
    let value = lss.contains_key(s!(key))?;
    Ok(Some(s!(value)))
}

#[tracing::instrument(level = "trace", err(Debug), skip(_args, context))]
fn h_lss_keys(_args: ArgMatches, context: &mut Context) -> anyhow::Result<Option<String>> {
    let lss = match_context!(context, lss => Some(_))?;
    let value = lss.keys()?;
    Ok(Some(value.join(",")))
}

#[tracing::instrument(level = "trace", err(Debug), skip(args, context))]
fn h_lss_remove(args: ArgMatches, context: &mut Context) -> anyhow::Result<Option<String>> {
    let lss = match_context!(context, lss => Some(_))?;
    let key = args.get_one::<String>("key").context("key not provided")?;
    let value = lss.remove(s!(key))?;
    Ok(value)
}

#[tracing::instrument(level = "trace", err(Debug), skip(_args, context))]
fn h_lss_len(_args: ArgMatches, context: &mut Context) -> anyhow::Result<Option<String>> {
    let lss = match_context!(context, lss => Some(_))?;
    let value = lss.len()?;
    Ok(Some(s!(value)))
}

#[tracing::instrument(level = "trace", err(Debug), skip(_args, context))]
fn h_lss_wipe(_args: ArgMatches, context: &mut Context) -> anyhow::Result<Option<String>> {
    let lss = match_context!(context, lss => Some(_))?;
    for each in lss.keys()? {
        lss.remove(s!(each))?;
    }
    Ok(Some(s!("lss wiped")))
}

#[tracing::instrument(level = "trace", err(Debug), skip(_args, context))]
fn h_lss_is_empty(_args: ArgMatches, context: &mut Context) -> anyhow::Result<Option<String>> {
    let lss = match_context!(context, lss => Some(_))?;
    let value = lss.is_empty()?;
    Ok(Some(s!(value)))
}

#[tracing::instrument(level = "trace", err(Debug), skip(_args, context))]
fn h_lss_wipe_clean(_args: ArgMatches, context: &mut Context) -> anyhow::Result<Option<String>> {
    let lss = match_context!(context, lss => Some(_))?;
    tracing::warn!("Wiping clean the local secure storage");
    let keys = lss.keys()?;
    for key in keys {
        lss.remove(s!(key))?;
    }
    Ok(Some(s!()))
}

pub fn extend(repl: Repl<Context, anyhow::Error>) -> Repl<Context, anyhow::Error> {
    repl.with_command(
        Command::new("lss-insert")
            .about("Insert a key/value pair into the local secure storage")
            .arg(Arg::new("key").required(true))
            .arg(Arg::new("value").required(true)),
        h_lss_insert,
    )
    .with_command(
        Command::new("lss-get")
            .about("Get a value from the local secure storage")
            .arg(Arg::new("key").required(true)),
        h_lss_get,
    )
    .with_command(
        Command::new("lss-create")
            .about("Create or load local secure storage")
            .arg(Arg::new("path").required(true)),
        h_lss_create,
    )
    .with_command(
        Command::new("lss-contains-key")
            .about("Check if a key exists in the local secure storage")
            .arg(Arg::new("key").required(true)),
        h_lss_contains_key,
    )
    .with_command(
        Command::new("lss-keys").about("Get all keys from the local secure storage"),
        h_lss_keys,
    )
    .with_command(
        Command::new("lss-remove")
            .about("Remove a key from the local secure storage")
            .arg(Arg::new("key").required(true)),
        h_lss_remove,
    )
    .with_command(
        Command::new("lss-len").about("Get the number of keys in the local secure storage"),
        h_lss_len,
    )
    .with_command(
        Command::new("lss-wipe").about("Wipe LSS content"),
        h_lss_wipe,
    )
    .with_command(
        Command::new("lss-is-empty").about("Check if the local secure storage is empty"),
        h_lss_is_empty,
    )
    .with_command(
        Command::new("lss-wipe-clean").about("wipe clean the local secure storage"),
        h_lss_wipe_clean,
    )
}