/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */

use serde_derive::{Deserialize, Serialize};
use serde_json::{Map, Value};

use crate::evaluator::split_locale;
use crate::stateless::matcher::AppContext;

#[derive(Serialize, Deserialize, Debug, Clone, Default)]
pub struct TargetingAttributes {
    pub language: Option<String>,
    pub region: Option<String>,
    #[serde(flatten)]
    pub app_context: AppContext,
    // This should be last so that any calculated fields (e.g. language and region)
    // are not overwriting the explicit fields set by the request.
    #[serde(flatten)]
    pub request_context: Map<String, Value>,
}

impl TargetingAttributes {
    pub fn new(app_context: AppContext, request_context: Map<String, Value>) -> Self {
        let (language, region) = match request_context
            .get("locale")
            .unwrap_or(&Value::Null)
            .as_str()
        {
            Some(locale) => split_locale(locale.to_string()),
            _ => (None, None),
        };

        Self {
            app_context,
            request_context,
            language,
            region,
        }
    }
}