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use engine_shared::{newtypes::Blake2bHash, stored_value::StoredValue};
use types::Key;

use crate::tracking_copy::TrackingCopyQueryResult;

pub enum QueryResult {
    RootNotFound,
    ValueNotFound(String),
    CircularReference(String),
    Success(StoredValue),
}

#[derive(Debug, Clone, PartialEq, Eq)]
pub struct QueryRequest {
    state_hash: Blake2bHash,
    key: Key,
    path: Vec<String>,
}

impl QueryRequest {
    pub fn new(state_hash: Blake2bHash, key: Key, path: Vec<String>) -> Self {
        QueryRequest {
            state_hash,
            key,
            path,
        }
    }

    pub fn state_hash(&self) -> Blake2bHash {
        self.state_hash
    }

    pub fn key(&self) -> Key {
        self.key
    }

    pub fn path(&self) -> &[String] {
        &self.path
    }
}

impl From<TrackingCopyQueryResult> for QueryResult {
    fn from(tracking_copy_query_result: TrackingCopyQueryResult) -> Self {
        match tracking_copy_query_result {
            TrackingCopyQueryResult::ValueNotFound(message) => QueryResult::ValueNotFound(message),
            TrackingCopyQueryResult::CircularReference(message) => {
                QueryResult::CircularReference(message)
            }
            TrackingCopyQueryResult::Success(value) => QueryResult::Success(value),
        }
    }
}