mediarepo/mediarepo-daemon/mediarepo-model/src/repo.rs

use crate::file::File;
use crate::storage::Storage;
use mediarepo_core::error::{RepoError, RepoResult};
use mediarepo_database::get_database;
use sea_orm::DatabaseConnection;
use std::path::PathBuf;
use tokio::fs::OpenOptions;
use tokio::io::BufReader;

pub struct Repo {
    db: DatabaseConnection,
    main_storage: Option<Storage>,
}

impl Repo {
    pub(crate) fn new(db: DatabaseConnection) -> Self {
        Self {
            db,
            main_storage: None,
        }
    }

    /// Connects to the database with the given uri
    pub async fn connect<S: AsRef<str>>(uri: S) -> RepoResult<Self> {
        let db = get_database(uri).await?;
        Ok(Self::new(db))
    }

    /// Returns all available storages
    pub async fn storages(&self) -> RepoResult<Vec<Storage>> {
        Storage::all(self.db.clone()).await
    }

    /// Returns a storage by path
    pub async fn storage_by_path<S: ToString>(&self, path: S) -> RepoResult<Option<Storage>> {
        Storage::by_path(self.db.clone(), path).await
    }

    /// Sets the main storage
    pub async fn set_main_storage<S: ToString>(&mut self, path: S) -> RepoResult<()> {
        self.main_storage = Storage::by_path(self.db.clone(), path).await?;
        Ok(())
    }

    /// Adds a storage to the repository
    pub async fn add_storage<S1: ToString, S2: ToString>(
        &self,
        name: S1,
        path: S2,
    ) -> RepoResult<Storage> {
        Storage::create(self.db.clone(), name, path).await
    }

    /// Returns a file by its mapped hash
    pub async fn file_by_hash<S: AsRef<str>>(&self, hash: S) -> RepoResult<Option<File>> {
        File::by_hash(self.db.clone(), hash).await
    }

    /// Returns a list of all stored files
    pub async fn files(&self) -> RepoResult<Vec<File>> {
        File::all(self.db.clone()).await
    }

    /// Adds a file to the database by its readable path in the file system
    pub async fn add_file_by_path(&self, path: PathBuf) -> RepoResult<File> {
        let os_file = OpenOptions::new().read(true).open(&path).await?;
        let reader = BufReader::new(os_file);

        let storage = self.get_main_storage()?;
        let hash = storage.add_file(reader).await?;
        let file = self
            .file_by_hash(hash)
            .await?
            .expect("Invalid database state.");

        Ok(file)
    }

    fn get_main_storage(&self) -> RepoResult<&Storage> {
        if let Some(storage) = &self.main_storage {
            Ok(storage)
        } else {
            Err(RepoError::from("No main storage configured."))
        }
    }
}