Claude
1b49135ca9
Remove async-trait dependency and use native Rust async fn in traits. Replace Arc<dyn Trait> with Arc<ConcreteType> throughout the codebase to enable monomorphization and eliminate dynamic dispatch overhead. Key changes: - Remove write-behind cache (no implementation existed) - Fix should_transcode static method call - Use ContactStorageAdapter directly instead of dyn AddressBookUseCase - Clean up unused trait imports across services and DI https://claude.ai/code/session_01EbAFEfyJNLRmJHmmYDX3Tt
90 lines
2.7 KiB
Rust
90 lines
2.7 KiB
Rust
//! Thumbnail Port - Application layer abstraction for thumbnail generation.
|
||
//!
|
||
//! This module defines the port (trait) for thumbnail operations,
|
||
//! keeping the application and interface layers independent of specific
|
||
//! image processing implementations.
|
||
|
||
use crate::common::errors::DomainError;
|
||
use bytes::Bytes;
|
||
use std::path::{Path, PathBuf};
|
||
use std::sync::Arc;
|
||
|
||
/// Thumbnail sizes supported by the system.
|
||
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
|
||
pub enum ThumbnailSize {
|
||
/// Small icon for file listings (150×150)
|
||
Icon,
|
||
/// Medium preview for gallery view (400×400)
|
||
Preview,
|
||
/// Large preview for detail view (800×800)
|
||
Large,
|
||
}
|
||
|
||
impl ThumbnailSize {
|
||
/// Get the maximum dimension for this size.
|
||
pub fn max_dimension(&self) -> u32 {
|
||
match self {
|
||
ThumbnailSize::Icon => 150,
|
||
ThumbnailSize::Preview => 400,
|
||
ThumbnailSize::Large => 800,
|
||
}
|
||
}
|
||
|
||
/// Get the directory name for this size.
|
||
pub fn dir_name(&self) -> &'static str {
|
||
match self {
|
||
ThumbnailSize::Icon => "icon",
|
||
ThumbnailSize::Preview => "preview",
|
||
ThumbnailSize::Large => "large",
|
||
}
|
||
}
|
||
|
||
/// Get all thumbnail sizes.
|
||
pub fn all() -> &'static [ThumbnailSize] {
|
||
&[
|
||
ThumbnailSize::Icon,
|
||
ThumbnailSize::Preview,
|
||
ThumbnailSize::Large,
|
||
]
|
||
}
|
||
}
|
||
|
||
/// Statistics about the thumbnail cache.
|
||
#[derive(Debug, Clone)]
|
||
pub struct ThumbnailStatsDto {
|
||
pub cached_thumbnails: usize,
|
||
pub cache_size_bytes: usize,
|
||
pub max_cache_bytes: usize,
|
||
}
|
||
|
||
/// Port for thumbnail generation and retrieval.
|
||
///
|
||
/// Implementations handle the actual image processing, caching,
|
||
/// and storage of thumbnails, while the application layer only
|
||
/// interacts through this abstraction.
|
||
pub trait ThumbnailPort: Send + Sync + 'static {
|
||
/// Check if a file is an image that can have thumbnails.
|
||
fn is_supported_image(&self, mime_type: &str) -> bool;
|
||
|
||
/// Get a thumbnail, generating it on-demand if needed.
|
||
///
|
||
/// Returns the thumbnail bytes in WebP format.
|
||
async fn get_thumbnail(
|
||
&self,
|
||
file_id: &str,
|
||
size: ThumbnailSize,
|
||
original_path: &Path,
|
||
) -> Result<Bytes, DomainError>;
|
||
|
||
/// Generate all thumbnail sizes for a file in the background.
|
||
///
|
||
/// Called after file upload to pre-generate thumbnails.
|
||
fn generate_all_sizes_background(self: Arc<Self>, file_id: String, original_path: PathBuf);
|
||
|
||
/// Delete all thumbnails for a file.
|
||
async fn delete_thumbnails(&self, file_id: &str) -> Result<(), DomainError>;
|
||
|
||
/// Get cache statistics.
|
||
async fn get_stats(&self) -> ThumbnailStatsDto;
|
||
}
|