Can import ZIP

moneymgr_backend/src/controllers/backup_controller.rs

@@ -6,7 +6,10 @@ use crate::converters::finances_manager_converter::{
 };
 use crate::extractors::auth_extractor::AuthExtractor;
 use crate::extractors::file_extractor::FileExtractor;
-use crate::models::accounts::AccountType;
+use crate::models::accounts::{Account, AccountID, AccountType};
+use crate::models::files;
+use crate::models::files::FileID;
+use crate::models::movements::Movement;
 use crate::services::accounts_service::UpdateAccountQuery;
 use crate::services::movements_service::UpdateMovementQuery;
 use crate::services::{accounts_service, files_service, movements_service};
@@ -14,10 +17,20 @@ use crate::utils::time_utils::{format_date, time};
 use actix_files::NamedFile;
 use actix_web::{HttpRequest, HttpResponse};
 use serde::Serialize;
+use serde::de::DeserializeOwned;
+use std::collections::HashMap;
 use std::fs::File;
-use std::io::Write;
-use zip::ZipWriter;
+use std::io::{Cursor, Read, Seek, Write};
 use zip::write::SimpleFileOptions;
+use zip::{ZipArchive, ZipWriter};
+
+#[derive(thiserror::Error, Debug)]
+pub enum BackupControllerError {
+    #[error("The account with id {0:?} does not exists!")]
+    NonexistentAccountId(AccountID),
+    #[error("The file with id {0:?} does not exists!")]
+    NonexistentFileId(FileID),
+}
 
 /// Generate export filename
 fn export_filename(ext: &str) -> String {
@@ -153,3 +166,94 @@ pub async fn zip_export(req: HttpRequest, auth: AuthExtractor) -> HttpResult {
 
     Ok(file.into_response(&req))
 }
+
+/// Read JSON from archive
+fn unzip_json<E: DeserializeOwned, R: Read + Seek>(
+    zip: &mut ZipArchive<R>,
+    path: &str,
+) -> anyhow::Result<E> {
+    let mut file = zip.by_name(path)?;
+    let mut content = String::with_capacity(file.size() as usize);
+    file.read_to_string(&mut content)?;
+
+    Ok(serde_json::from_str(&content)?)
+}
+
+/// Replace all data with data included in ZIP file
+pub async fn zip_import(auth: AuthExtractor, file: FileExtractor) -> HttpResult {
+    // Parse provided files
+    let zip_cursor = Cursor::new(file.buff);
+    let mut zip = ZipArchive::new(zip_cursor)?;
+
+    let new_accounts: Vec<Account> = unzip_json(&mut zip, constants::zip_export::ACCOUNTS_FILE)?;
+    let new_movements: Vec<Movement> = unzip_json(&mut zip, constants::zip_export::MOVEMENTS_FILE)?;
+    let new_files: Vec<files::File> = unzip_json(&mut zip, constants::zip_export::FILES_FILE)?;
+    // TODO : inbox
+
+    // Delete all data
+    accounts_service::delete_all_user(auth.user_id()).await?;
+    files_service::delete_all_user(auth.user_id()).await?;
+
+    // Create the files
+    let mut files_mapping = HashMap::new();
+    for file in new_files {
+        let mut zip_file = zip
+            .by_name(&format!(
+                "{}{}",
+                constants::zip_export::FILES_DIR,
+                file.sha512
+            ))
+            .map_err(|e| anyhow::anyhow!("Could not find file with hash {}: {}", file.sha512, e))?;
+        let mut file_buff = Vec::with_capacity(zip_file.size() as usize);
+        zip_file.read_to_end(&mut file_buff)?;
+        let created_file =
+            files_service::create_file_with_file_name(auth.user_id(), &file.file_name, &file_buff)
+                .await?;
+        files_mapping.insert(file.id(), created_file);
+    }
+
+    // Create the accounts
+    let mut accounts_mapping = HashMap::new();
+    for account in new_accounts {
+        let created_account = accounts_service::create(
+            auth.user_id(),
+            &UpdateAccountQuery {
+                name: account.name.to_string(),
+                r#type: account.account_type(),
+            },
+        )
+        .await?;
+
+        if account.default_account {
+            accounts_service::set_default(auth.user_id(), created_account.id()).await?;
+        }
+
+        accounts_mapping.insert(account.id(), created_account);
+    }
+
+    // Create the movements
+    for movement in new_movements {
+        movements_service::create(&UpdateMovementQuery {
+            account_id: accounts_mapping
+                .get(&movement.account_id())
+                .ok_or_else(|| BackupControllerError::NonexistentAccountId(movement.account_id()))?
+                .id(),
+            time: movement.time as u64,
+            label: movement.label.to_string(),
+            file_id: movement
+                .file_id()
+                .map(|file_id| {
+                    files_mapping
+                        .get(&file_id)
+                        .ok_or(BackupControllerError::NonexistentFileId(file_id))
+                })
+                .transpose()?
+                .map(|f| f.id()),
+            amount: movement.amount,
+            checked: movement.checked,
+        })
+        .await?;
+    }
+
+    Ok(HttpResponse::Accepted().finish())
+}

moneymgr_backend/src/controllers/files_controller.rs

@@ -102,7 +102,7 @@ pub async fn serve_file(req: HttpRequest, file: &File, download_file: bool) -> H
 
 /// Delete an uploaded file
 pub async fn delete(file_extractor: FileIdExtractor) -> HttpResult {
-    match files_service::delete_file_if_unused(file_extractor.as_ref().id()).await {
+    match files_service::delete_file_if_unused(file_extractor.as_ref().id(), true).await {
         Ok(true) => Ok(HttpResponse::Accepted().finish()),
         Ok(false) => Ok(HttpResponse::Conflict().finish()),
         Err(e) => {

moneymgr_backend/src/controllers/mod.rs

@@ -1,3 +1,4 @@
+use crate::controllers::backup_controller::BackupControllerError;
 use actix_web::http::StatusCode;
 use actix_web::{HttpResponse, ResponseError};
 use std::error::Error;
@@ -35,6 +36,8 @@ pub enum HttpFailure {
     ZipError(#[from] ZipError),
     #[error("a standard I/O manipulation error occurred: {0}")]
     StdIoError(#[from] std::io::Error),
+    #[error("an error occurred while performing backup/recovery operation: {0}")]
+    BackupControllerError(#[from] BackupControllerError),
 }
 
 impl ResponseError for HttpFailure {

moneymgr_backend/src/main.rs

@@ -174,6 +174,10 @@ async fn main() -> std::io::Result<()> {
                 "/api/backup/zip/export",
                 web::get().to(backup_controller::zip_export),
             )
+            .route(
+                "/api/backup/zip/import",
+                web::post().to(backup_controller::zip_import),
+            )
             // Static assets
             .route("/", web::get().to(static_controller::root_index))
             .route(

moneymgr_backend/src/models/accounts.rs

@@ -28,7 +28,7 @@ impl Display for AccountType {
     }
 }
 
-#[derive(Queryable, Debug, Clone, serde::Serialize)]
+#[derive(Queryable, Debug, Clone, serde::Serialize, serde::Deserialize)]
 pub struct Account {
     id: i32,
     pub name: String,

moneymgr_backend/src/models/files.rs

@@ -2,10 +2,12 @@ use crate::models::users::UserID;
 use crate::schema::*;
 use diesel::prelude::*;
 
-#[derive(Debug, Clone, Copy, serde::Serialize, serde::Deserialize, PartialEq, Eq)]
+#[derive(
+    Debug, Clone, Copy, serde::Serialize, serde::Deserialize, PartialEq, Eq, Hash, PartialOrd, Ord,
+)]
 pub struct FileID(pub i32);
 
-#[derive(Queryable, Debug, serde::Serialize)]
+#[derive(Queryable, Debug, serde::Serialize, serde::Deserialize)]
 pub struct File {
     id: i32,
     pub time_create: i64,

moneymgr_backend/src/models/movements.rs

@@ -7,7 +7,7 @@ use diesel::{Insertable, Queryable, QueryableByName};
 pub struct MovementID(pub i32);
 
 /// Single movement information
-#[derive(Queryable, QueryableByName, Debug, Clone, serde::Serialize)]
+#[derive(Queryable, QueryableByName, Debug, Clone, serde::Serialize, serde::Deserialize)]
 pub struct Movement {
     /// The ID of the movement
     id: i32,

moneymgr_backend/src/services/accounts_service.rs

@@ -97,3 +97,11 @@ pub async fn delete(id: AccountID) -> anyhow::Result<()> {
 
     Ok(())
 }
+
+/// Delete all the accounts of a user
+pub async fn delete_all_user(user: UserID) -> anyhow::Result<()> {
+    for account in get_list_user(user).await? {
+        delete(account.id()).await?;
+    }
+    Ok(())
+}

moneymgr_backend/src/services/files_service.rs

@@ -13,6 +13,8 @@ use mime_guess::Mime;
 enum FilesServiceError {
     #[error("UnknownMimeType!")]
     UnknownMimeType,
+    #[error("Could not delete all the files of the user: a file is still referenced!")]
+    DeleteAllUserFileStillReferenced,
 }
 
 pub async fn create_file_with_file_name(
@@ -84,11 +86,11 @@ pub async fn get_file_content(file: &File) -> anyhow::Result<Vec<u8>> {
 
 /// Delete the file if it is not referenced anymore in the database. Returns true
 /// if the file was actually deleted, false otherwise
-pub async fn delete_file_if_unused(id: FileID) -> anyhow::Result<bool> {
+pub async fn delete_file_if_unused(id: FileID, skip_age_check: bool) -> anyhow::Result<bool> {
     let file = get_file_with_id(id)?;
 
     // Check if the file is old enough
-    if file.time_create as u64 + constants::MIN_FILE_LIFETIME > time() {
+    if file.time_create as u64 + constants::MIN_FILE_LIFETIME > time() && !skip_age_check {
         return Ok(false);
     }
 
@@ -129,10 +131,21 @@ pub async fn run_garbage_collector() -> anyhow::Result<usize> {
     let mut count_deleted = 0;
 
     for file in get_entire_list().await? {
-        if delete_file_if_unused(file.id()).await? {
+        if delete_file_if_unused(file.id(), false).await? {
             count_deleted += 1;
         }
     }
 
     Ok(count_deleted)
 }
+
+/// Delete all the files of a given user
+pub async fn delete_all_user(user_id: UserID) -> anyhow::Result<()> {
+    for file in get_all_files_user(user_id).await? {
+        if !delete_file_if_unused(file.id(), true).await? {
+            return Err(FilesServiceError::DeleteAllUserFileStillReferenced.into());
+        }
+    }
+
+    Ok(())
+}