First working version of support for versions

src/index.rs

@@ -1,14 +1,13 @@
+use std::collections::hash_map::Iter;
+use std::collections::HashMap;
 use std::fs::File;
 use std::path::Path;
 
 use serde::{Deserialize, Serialize};
 
 use crate::error::BakareError;
-use crate::error::BakareError::RepositoryPathNotAbsolute;
 use crate::repository::{ItemId, Version};
 use crate::repository_item::RepositoryItem;
-use std::collections::hash_map::Iter;
-use std::collections::HashMap;
 
 #[derive(Clone, Debug, PartialOrd, PartialEq, Ord, Eq, Serialize, Deserialize)]
 pub struct IndexItem {
@@ -48,11 +47,11 @@ impl IndexItem {
         }
     }
 
-    fn next_version(&self, id: ItemId) -> IndexItem {
+    fn next_version(&self, id: ItemId, relative_path: String) -> IndexItem {
         IndexItem {
-            relative_path: self.relative_path.clone(),
             original_source_path: self.original_source_path.clone(),
             version: self.version.next(),
+            relative_path,
             id,
         }
     }
@@ -85,20 +84,12 @@ impl Index {
         Path::new(&self.index_path)
     }
 
-    pub fn len(&self) -> usize {
-        self.items_by_file_id.len()
-    }
-
-    pub fn is_empty(&self) -> bool {
-        self.items_by_file_id.is_empty()
-    }
-
-    pub fn remember(&mut self, original_source_path: &Path, absolute_path: &Path, relative_path: &Path, id: ItemId) {
+    pub fn remember(&mut self, original_source_path: &Path, relative_path: &Path, id: ItemId) {
         let item = if let Some(old) = self
             .newest_items_by_source_path
             .get(&original_source_path.to_string_lossy().to_string())
         {
-            old.next_version(id)
+            old.next_version(id, relative_path.to_string_lossy().to_string())
         } else {
             IndexItem::from(
                 original_source_path.to_string_lossy().to_string(),
@@ -108,6 +99,7 @@ impl Index {
             )
         };
 
+        println!("remember {:?}", item);
         self.items_by_file_id.insert(item.id.clone(), item.clone());
         self.newest_items_by_source_path
             .insert(original_source_path.to_string_lossy().to_string(), item.clone());
@@ -140,7 +132,7 @@ impl Index {
     }
 
     pub fn item_by_id(&self, id: &ItemId) -> Result<Option<IndexItem>, BakareError> {
-        Ok(self.items_by_file_id.get(id).map(|i| i.clone()))
+        Ok(self.items_by_file_id.get(id).cloned())
     }
 
     pub fn newest_items(&self) -> IndexItemIterator {

src/repository.rs

@@ -2,7 +2,7 @@ use std::path::Path;
 use std::{fmt, fs, io};
 
 use crate::error::BakareError;
-use crate::index::{Index, IndexItem, IndexItemIterator};
+use crate::index::{Index, IndexItemIterator};
 use crate::repository_item::RepositoryItem;
 use serde::{Deserialize, Serialize};
 use sha2::Digest;
@@ -10,7 +10,6 @@ use sha2::Sha512;
 use std::fmt::Formatter;
 use std::fs::File;
 use std::io::BufReader;
-use std::ops::Add;
 
 /// represents a place where backup is stored an can be restored from.
 /// right now only on-disk directory storage is supported
@@ -102,15 +101,14 @@ impl<'a> Repository<'a> {
         if source_path.is_file() {
             fs::create_dir_all(destination_path.parent().unwrap())?;
             fs::copy(source_path, destination_path)?;
-
-            self.index
-                .remember(source_path, destination_path, destination_path.strip_prefix(self.path)?, id);
+            let relative_path = destination_path.strip_prefix(self.path)?;
+            self.index.remember(source_path, relative_path, id);
             self.index.save()?;
         }
         Ok(())
     }
 
-    pub fn newest_item_by_source__path(&self, path: &Path) -> Result<Option<RepositoryItem>, BakareError> {
+    pub fn newest_item_by_source_path(&self, path: &Path) -> Result<Option<RepositoryItem>, BakareError> {
         Ok(self
             .index
             .newest_item_by_source_path(path)?

src/test/assertions.rs

@@ -41,7 +41,7 @@ pub fn assert_restored_has_contents(
     let restore_repository = Repository::open(repository_path)?;
     let restore_target = tempdir()?;
     let restore_engine = restore::Engine::new(&restore_repository, &restore_target.path())?;
-    let item = restore_repository.newest_item_by_source__path(&source_file_full_path)?;
+    let item = restore_repository.newest_item_by_source_path(&source_file_full_path)?;
     restore_engine.restore(&item.unwrap())?;
     let restored_file_path = restore_target.path().join(source_file_full_path.strip_prefix("/")?);
     assert_target_file_contents(&restored_file_path, contents)
@@ -65,7 +65,7 @@ pub fn assert_restored_from_version_has_contents(
 pub fn item_id(repository_path: &Path, source_file_full_path: &Path) -> Result<ItemId, BakareError> {
     let id = {
         let reading_repository = Repository::open(repository_path)?;
-        let item = reading_repository.newest_item_by_source__path(&source_file_full_path)?;
+        let item = reading_repository.newest_item_by_source_path(&source_file_full_path)?;
         assert!(item.is_some());
         let item = item.unwrap();
         item.id().clone()

tests/system_tests.rs

@@ -32,7 +32,7 @@ fn restore_files_after_reopening_repository() -> Result<(), BakareError> {
     restore_all_from_reloaded_repository(&repository_path, &restore_target)?;
 
     let source_file_full_path = &source.file_path(source_file_relative_path);
-    assert_restored_has_contents(repository_path, source_file_full_path, "newest contents")
+    assert_restored_has_contents(repository_path, source_file_full_path, original_contents)
 }
 
 #[test]