Initial commit

src/application/dtos/file_dto.rs

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+use serde::Serialize;
+use crate::domain::entities::file::File;
+
+/// DTO for file responses
+#[derive(Debug, Serialize)]
+pub struct FileDto {
+    /// File ID
+    pub id: String,
+    
+    /// File name
+    pub name: String,
+    
+    /// Path to the file (relative)
+    pub path: String,
+    
+    /// Size in bytes
+    pub size: u64,
+    
+    /// MIME type
+    pub mime_type: String,
+    
+    /// Parent folder ID
+    pub folder_id: Option<String>,
+    
+    /// Creation timestamp
+    pub created_at: u64,
+    
+    /// Last modification timestamp
+    pub modified_at: u64,
+}
+
+impl From<File> for FileDto {
+    fn from(file: File) -> Self {
+        Self {
+            id: file.id,
+            name: file.name,
+            path: file.path.to_string_lossy().to_string(),
+            size: file.size,
+            mime_type: file.mime_type,
+            folder_id: file.folder_id,
+            created_at: file.created_at,
+            modified_at: file.modified_at,
+        }
+    }
+}

src/application/dtos/folder_dto.rs

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+use serde::{Serialize, Deserialize};
+use crate::domain::entities::folder::Folder;
+
+/// DTO for folder creation requests
+#[derive(Debug, Deserialize)]
+pub struct CreateFolderDto {
+    /// Name of the folder to create
+    pub name: String,
+    
+    /// Parent folder ID (None for root level)
+    pub parent_id: Option<String>,
+}
+
+/// DTO for folder rename requests
+#[derive(Debug, Deserialize)]
+pub struct RenameFolderDto {
+    /// New name for the folder
+    pub name: String,
+}
+
+/// DTO for folder move requests
+#[derive(Debug, Deserialize)]
+pub struct MoveFolderDto {
+    /// New parent folder ID (None for root level)
+    pub parent_id: Option<String>,
+}
+
+/// DTO for folder responses
+#[derive(Debug, Serialize)]
+pub struct FolderDto {
+    /// Folder ID
+    pub id: String,
+    
+    /// Folder name
+    pub name: String,
+    
+    /// Path to the folder (relative)
+    pub path: String,
+    
+    /// Parent folder ID
+    pub parent_id: Option<String>,
+    
+    /// Creation timestamp
+    pub created_at: u64,
+    
+    /// Last modification timestamp
+    pub modified_at: u64,
+    
+    /// Whether this is a root folder
+    pub is_root: bool,
+}
+
+impl From<Folder> for FolderDto {
+    fn from(folder: Folder) -> Self {
+        let is_root = folder.parent_id.is_none();
+        Self {
+            id: folder.id,
+            name: folder.name,
+            path: folder.path.to_string_lossy().to_string(),
+            parent_id: folder.parent_id,
+            created_at: folder.created_at,
+            modified_at: folder.modified_at,
+            is_root,
+        }
+    }
+}

src/application/dtos/i18n_dto.rs

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+use serde::{Serialize, Deserialize};
+use crate::domain::services::i18n_service::Locale;
+
+/// DTO for locale information
+#[derive(Debug, Serialize, Deserialize)]
+pub struct LocaleDto {
+    /// Locale code (e.g., "en", "es")
+    pub code: String,
+    
+    /// Locale name in its own language (e.g., "English", "Español")
+    pub name: String,
+}
+
+impl From<Locale> for LocaleDto {
+    fn from(locale: Locale) -> Self {
+        let (code, name) = match locale {
+            Locale::English => ("en", "English"),
+            Locale::Spanish => ("es", "Español"),
+        };
+        
+        Self {
+            code: code.to_string(),
+            name: name.to_string(),
+        }
+    }
+}
+
+/// DTO for translation request
+#[derive(Debug, Deserialize)]
+pub struct TranslationRequestDto {
+    /// The translation key
+    pub key: String,
+    
+    /// The locale code (optional, defaults to "en")
+    pub locale: Option<String>,
+}
+
+/// DTO for translation response
+#[derive(Debug, Serialize)]
+pub struct TranslationResponseDto {
+    /// The translation key
+    pub key: String,
+    
+    /// The locale code used for translation
+    pub locale: String,
+    
+    /// The translated text
+    pub text: String,
+}
+
+/// DTO for translation error
+#[derive(Debug, Serialize)]
+pub struct TranslationErrorDto {
+    /// The translation key that was not found
+    pub key: String,
+    
+    /// The locale code used for translation
+    pub locale: String,
+    
+    /// The error message
+    pub error: String,
+}

src/application/dtos/mod.rs

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+pub mod file_dto;
+pub mod folder_dto;
+pub mod i18n_dto;
+

src/application/mod.rs

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+pub mod dtos;
+pub mod services;
+

src/application/services/file_service.rs

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+use std::sync::Arc;
+
+use crate::domain::repositories::file_repository::{FileRepository, FileRepositoryResult};
+use crate::application::dtos::file_dto::FileDto;
+
+/// Service for file operations
+pub struct FileService {
+    file_repository: Arc<dyn FileRepository>,
+}
+
+impl FileService {
+    /// Creates a new file service
+    pub fn new(file_repository: Arc<dyn FileRepository>) -> Self {
+        Self { file_repository }
+    }
+    
+    /// Uploads a new file from bytes
+    pub async fn upload_file_from_bytes(
+        &self,
+        name: String,
+        folder_id: Option<String>,
+        content_type: String,
+        content: Vec<u8>,
+    ) -> FileRepositoryResult<FileDto>
+    {
+        let file = self.file_repository.save_file_from_bytes(name, folder_id, content_type, content).await?;
+        Ok(FileDto::from(file))
+    }
+    
+    /// Gets a file by ID
+    pub async fn get_file(&self, id: &str) -> FileRepositoryResult<FileDto> {
+        let file = self.file_repository.get_file_by_id(id).await?;
+        Ok(FileDto::from(file))
+    }
+    
+    /// Lists files in a folder
+    pub async fn list_files(&self, folder_id: Option<&str>) -> FileRepositoryResult<Vec<FileDto>> {
+        let files = self.file_repository.list_files(folder_id).await?;
+        Ok(files.into_iter().map(FileDto::from).collect())
+    }
+    
+    /// Deletes a file
+    pub async fn delete_file(&self, id: &str) -> FileRepositoryResult<()> {
+        self.file_repository.delete_file(id).await
+    }
+    
+    /// Gets file content
+    pub async fn get_file_content(&self, id: &str) -> FileRepositoryResult<Vec<u8>> {
+        self.file_repository.get_file_content(id).await
+    }
+    
+    /// Moves a file to a new folder implementing direct save with new location without deleting first
+    pub async fn move_file(&self, file_id: &str, folder_id: Option<String>) -> FileRepositoryResult<FileDto> {
+        // Get the current file complete info
+        let source_file = match self.file_repository.get_file_by_id(file_id).await {
+            Ok(f) => f,
+            Err(e) => {
+                tracing::error!("Error al obtener archivo (ID: {}): {}", file_id, e);
+                return Err(e);
+            }
+        };
+        
+        tracing::info!("Moviendo archivo: {} (ID: {}) de carpeta: {:?} a carpeta: {:?}", 
+                      source_file.name, file_id, source_file.folder_id, folder_id);
+        
+        // Special handling for PDF files
+        let is_pdf = source_file.name.to_lowercase().ends_with(".pdf");
+        if is_pdf {
+            tracing::info!("Moviendo un archivo PDF: {}", source_file.name);
+        }
+        
+        // No hacer nada si ya estamos en la carpeta de destino
+        if source_file.folder_id == folder_id {
+            tracing::info!("El archivo ya está en la carpeta de destino, no es necesario moverlo");
+            return Ok(FileDto::from(source_file));
+        }
+        
+        // Step 1: Get file content
+        tracing::info!("Leyendo contenido del archivo: {}", source_file.name);
+        let content = match self.file_repository.get_file_content(file_id).await {
+            Ok(content) => {
+                tracing::info!("Contenido del archivo leído correctamente: {} bytes", content.len());
+                content
+            },
+            Err(e) => {
+                tracing::error!("Error al leer el contenido del archivo {}: {}", file_id, e);
+                return Err(e);
+            }
+        };
+        
+        // Step 2: Save the file to the new location with a new ID
+        tracing::info!("Guardando archivo en nueva ubicación: {} en carpeta: {:?}", source_file.name, folder_id);
+        let new_file = match self.file_repository.save_file_from_bytes(
+            source_file.name.clone(),
+            folder_id.clone(),
+            source_file.mime_type.clone(),
+            content
+        ).await {
+            Ok(file) => {
+                tracing::info!("Archivo guardado en nueva ubicación con ID: {}", file.id);
+                file
+            },
+            Err(e) => {
+                tracing::error!("Error al guardar archivo en nueva ubicación: {}", e);
+                return Err(e);
+            }
+        };
+        
+        // Step 3: Only after ensuring new file is saved, try to delete the old file
+        // If this fails, it's not critical - we already have the file in the new location
+        tracing::info!("Eliminando archivo original con ID: {}", file_id);
+        match self.file_repository.delete_file(file_id).await {
+            Ok(_) => tracing::info!("Archivo original eliminado correctamente"),
+            Err(e) => {
+                tracing::warn!("Error al eliminar archivo original (ID: {}): {} - archivo duplicado posible", file_id, e);
+                // Continue even if delete fails - at worst we'll have duplicate files
+            }
+        }
+        
+        tracing::info!("Archivo movido exitosamente: {} (ID: {}) a carpeta: {:?}", 
+                       new_file.name, new_file.id, folder_id);
+        
+        Ok(FileDto::from(new_file))
+    }
+}

src/application/services/folder_service.rs

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+use std::path::PathBuf;
+use std::sync::Arc;
+
+use crate::domain::repositories::folder_repository::{FolderRepository, FolderRepositoryResult};
+use crate::application::dtos::folder_dto::{CreateFolderDto, RenameFolderDto, MoveFolderDto, FolderDto};
+
+/// Service for folder operations
+pub struct FolderService {
+    folder_repository: Arc<dyn FolderRepository>,
+}
+
+impl FolderService {
+    /// Creates a new folder service
+    pub fn new(folder_repository: Arc<dyn FolderRepository>) -> Self {
+        Self { folder_repository }
+    }
+    
+    /// Creates a new folder
+    pub async fn create_folder(&self, dto: CreateFolderDto) -> FolderRepositoryResult<FolderDto> {
+        let parent_path = match &dto.parent_id {
+            Some(parent_id) => {
+                let parent = self.folder_repository.get_folder_by_id(parent_id).await?;
+                Some(parent.path)
+            },
+            None => None
+        };
+        
+        let folder = self.folder_repository.create_folder(dto.name, parent_path).await?;
+        Ok(FolderDto::from(folder))
+    }
+    
+    /// Gets a folder by ID
+    pub async fn get_folder(&self, id: &str) -> FolderRepositoryResult<FolderDto> {
+        let folder = self.folder_repository.get_folder_by_id(id).await?;
+        Ok(FolderDto::from(folder))
+    }
+    
+    /// Gets a folder by path
+    #[allow(dead_code)]
+    pub async fn get_folder_by_path(&self, path: &str) -> FolderRepositoryResult<FolderDto> {
+        let path_buf = PathBuf::from(path);
+        let folder = self.folder_repository.get_folder_by_path(&path_buf).await?;
+        Ok(FolderDto::from(folder))
+    }
+    
+    /// Lists folders in a parent folder
+    pub async fn list_folders(&self, parent_id: Option<&str>) -> FolderRepositoryResult<Vec<FolderDto>> {
+        let folders = self.folder_repository.list_folders(parent_id).await?;
+        Ok(folders.into_iter().map(FolderDto::from).collect())
+    }
+    
+    /// Renames a folder
+    pub async fn rename_folder(&self, id: &str, dto: RenameFolderDto) -> FolderRepositoryResult<FolderDto> {
+        let folder = self.folder_repository.rename_folder(id, dto.name).await?;
+        Ok(FolderDto::from(folder))
+    }
+    
+    /// Moves a folder to a new parent
+    pub async fn move_folder(&self, id: &str, dto: MoveFolderDto) -> FolderRepositoryResult<FolderDto> {
+        let folder = self.folder_repository.move_folder(id, dto.parent_id.as_deref()).await?;
+        Ok(FolderDto::from(folder))
+    }
+    
+    /// Deletes a folder
+    pub async fn delete_folder(&self, id: &str) -> FolderRepositoryResult<()> {
+        self.folder_repository.delete_folder(id).await
+    }
+}

src/application/services/i18n_application_service.rs

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+use std::sync::Arc;
+
+use crate::domain::services::i18n_service::{I18nService, I18nResult, Locale};
+
+/// Service for i18n operations
+pub struct I18nApplicationService {
+    i18n_service: Arc<dyn I18nService>,
+}
+
+impl I18nApplicationService {
+    /// Creates a new i18n application service
+    pub fn new(i18n_service: Arc<dyn I18nService>) -> Self {
+        Self { i18n_service }
+    }
+    
+    /// Get a translation for a key and locale
+    pub async fn translate(&self, key: &str, locale: Option<Locale>) -> I18nResult<String> {
+        let locale = locale.unwrap_or(Locale::default());
+        self.i18n_service.translate(key, locale).await
+    }
+    
+    /// Load translations for a locale
+    pub async fn load_translations(&self, locale: Locale) -> I18nResult<()> {
+        self.i18n_service.load_translations(locale).await
+    }
+    
+    /// Load translations for all available locales
+    #[allow(dead_code)]
+    pub async fn load_all_translations(&self) -> Vec<(Locale, I18nResult<()>)> {
+        let locales = self.i18n_service.available_locales().await;
+        let mut results = Vec::new();
+        
+        for locale in locales {
+            let result = self.i18n_service.load_translations(locale).await;
+            results.push((locale, result));
+        }
+        
+        results
+    }
+    
+    /// Get available locales
+    pub async fn available_locales(&self) -> Vec<Locale> {
+        self.i18n_service.available_locales().await
+    }
+    
+    /// Check if a locale is supported
+    #[allow(dead_code)]
+    pub async fn is_supported(&self, locale: Locale) -> bool {
+        self.i18n_service.is_supported(locale).await
+    }
+}

src/application/services/mod.rs

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+pub mod file_service;
+pub mod folder_service;
+pub mod i18n_application_service;
+