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/*
 * This file is part of ActivityStreams.
 *
 * Copyright © 2020 Riley Trautman
 *
 * ActivityStreams 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.
 *
 * ActivityStreams 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 ActivityStreams.  If not, see <http://www.gnu.org/licenses/>.
 */

use crate::{
    activity::{
        kind::QuestionType,
        properties::{ActivityProperties, QuestionProperties},
        Activity, IntransitiveActivity,
    },
    object::{properties::ObjectProperties, Object},
    PropRefs,
};
use serde::{Deserialize, Serialize};

/// Represents a question being asked.
///
/// Question objects are an extension of IntransitiveActivity. That is, the Question object is an
/// Activity, but the direct object is the question itself and therefore it would not contain an
/// object property.
///
/// Either of the anyOf and oneOf properties MAY be used to express possible answers, but a
/// Question object MUST NOT have both properties.
#[derive(Clone, Debug, Default, Deserialize, Serialize, PropRefs)]
#[serde(rename_all = "camelCase")]
pub struct Question {
    #[serde(rename = "type")]
    #[serde(alias = "objectType")]
    #[serde(alias = "verb")]
    pub kind: QuestionType,

    /// Adds all valid question properties to this struct
    #[serde(flatten)]
    #[activitystreams(None)]
    pub question_props: QuestionProperties,

    /// Adds all valid object properties to this struct
    #[serde(flatten)]
    #[activitystreams(Object)]
    pub object_props: ObjectProperties,

    /// Adds all valid activity properties to this struct
    #[serde(flatten)]
    #[activitystreams(Activity)]
    pub activity_props: ActivityProperties,
}

impl IntransitiveActivity for Question {}