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#[cfg(feature = "frontend")]
use crate::SharedFiles;
use buildsrs_database::AnyMetadata;
use buildsrs_storage::AnyStorage;

/// Backend state.
///
/// This struct contains all shared state that is needed to implement the backend service.
#[derive(Clone, Debug)]
pub struct Backend {
    database: AnyMetadata,
    storage: AnyStorage,
    #[cfg(feature = "frontend")]
    frontend: SharedFiles,
}

impl Backend {
    /// Create new backend state from a database connection and storage instance.
    pub fn new(database: AnyMetadata, storage: AnyStorage) -> Self {
        Backend {
            database,
            storage,
            #[cfg(feature = "frontend")]
            frontend: Default::default(),
        }
    }

    /// Replace frontend files
    #[cfg(feature = "frontend")]
    #[must_use]
    pub fn with_frontend(self, frontend: SharedFiles) -> Self {
        Self { frontend, ..self }
    }

    /// Frontend files
    #[cfg(feature = "frontend")]
    pub fn frontend(&self) -> &SharedFiles {
        &self.frontend
    }

    /// Return a reference to the database.
    pub fn database(&self) -> &AnyMetadata {
        &self.database
    }

    /// Return a reference to the storage.
    pub fn storage(&self) -> &AnyStorage {
        &self.storage
    }
}