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use super::features;
use super::types::FlagsmithValue;
use super::utils;
use super::utils::datetime;
use chrono::{DateTime, Utc};
use serde::{Deserialize, Serialize};
pub mod builders;

#[derive(Serialize, Deserialize, Debug, Clone)]
pub struct Trait {
    pub trait_key: String,
    pub trait_value: FlagsmithValue,
}

#[derive(Serialize, Deserialize, Debug)]
pub struct Identity {
    pub identifier: String,
    pub environment_api_key: String,

    #[serde(with = "datetime")]
    pub created_date: DateTime<Utc>,
    pub identity_features: Vec<features::FeatureState>,
    pub identity_traits: Vec<Trait>,

    #[serde(default = "utils::get_uuid")]
    pub identity_uuid: String,
    pub django_id: Option<u32>,
}

impl Identity {
    pub fn composite_key(&self) -> String {
        return self.environment_api_key.clone() + "_" + &self.identifier;
    }
    pub fn new(identifier: String, environment_api_key: String) -> Self {
        Identity {
            identifier,
            environment_api_key,
            created_date: chrono::Utc::now(),
            identity_features: vec![],
            identity_traits: vec![],
            identity_uuid: utils::get_uuid(),
            django_id: None,
        }
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn composite_key_is_correct() {
        let expected_composite_key = "test_api_key_test_user";
        let identity_json = r#"{
            "identifier": "test_user",
            "environment_api_key": "test_api_key",
            "created_date": "2022-03-02T12:31:05.309861",
            "identity_features": [],
            "identity_traits": [],
            "identity_uuid":""
        }"#;

        let identity: Identity = serde_json::from_str(identity_json).unwrap();
        assert_eq!(identity.composite_key(), expected_composite_key)
    }
}