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/*
 * meli - configuration module.
 *
 * Copyright 2019 Manos Pitsidianakis
 *
 * This file is part of meli.
 *
 * meli 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.
 *
 * meli 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 meli. If not, see <http://www.gnu.org/licenses/>.
 */

#[cfg(feature = "gpgme")]
use super::default_vals::*;
#[cfg(feature = "gpgme")]
use melib::conf::ToggleFlag;

#[cfg(feature = "gpgme")]
/// Settings for digital signing and encryption
#[derive(Debug, Deserialize, Clone, Serialize)]
#[serde(deny_unknown_fields)]
pub struct PGPSettings {
    /// auto verify signed e-mail according to RFC3156
    /// Default: true
    #[serde(default = "true_val", alias = "auto-verify-signatures")]
    pub auto_verify_signatures: bool,

    /// auto decrypt encrypted e-mail
    /// Default: true
    #[serde(default = "true_val", alias = "auto-decrypt")]
    pub auto_decrypt: bool,

    /// always sign sent e-mail
    /// Default: false
    #[serde(default = "false_val", alias = "auto-sign")]
    pub auto_sign: bool,

    /// Auto encrypt sent e-mail
    /// Default: false
    #[serde(default = "false_val", alias = "auto-encrypt")]
    pub auto_encrypt: bool,

    // https://tools.ietf.org/html/rfc4880#section-12.2
    /// Default: None
    #[serde(default = "none", alias = "sign-key")]
    pub sign_key: Option<String>,

    /// Default: None
    #[serde(default = "none", alias = "decrypt-key")]
    pub decrypt_key: Option<String>,

    /// Default: None
    #[serde(default = "none", alias = "encrypt-key")]
    pub encrypt_key: Option<String>,

    /// Allow remote lookups
    /// Default: None
    #[serde(default = "internal_value_false", alias = "allow-remote-lookups")]
    pub allow_remote_lookup: ToggleFlag,

    /// Remote lookup mechanisms.
    /// Default: "local,wkd"
    #[serde(
        default = "default_lookup_mechanism",
        alias = "remote-lookup-mechanisms"
    )]
    pub remote_lookup_mechanisms: melib::gpgme::LocateKey,
}

#[cfg(feature = "gpgme")]
fn default_lookup_mechanism() -> melib::gpgme::LocateKey {
    melib::gpgme::LocateKey::LOCAL | melib::gpgme::LocateKey::WKD
}

#[cfg(feature = "gpgme")]
impl Default for PGPSettings {
    fn default() -> Self {
        PGPSettings {
            auto_verify_signatures: true,
            auto_decrypt: true,
            auto_sign: false,
            auto_encrypt: false,
            sign_key: None,
            decrypt_key: None,
            encrypt_key: None,
            allow_remote_lookup: internal_value_false::<ToggleFlag>(),
            remote_lookup_mechanisms: default_lookup_mechanism(),
        }
    }
}

#[cfg(not(feature = "gpgme"))]
#[derive(Debug, Default, Deserialize, Clone, Serialize)]
#[serde(deny_unknown_fields)]
pub struct PGPSettings;