feat(indexer): started indexer

src/commands/add.rs

@@ -1,8 +1,12 @@
 use crate::config::config::Config;
-use crate::store::{ignorer::Ignorer, nsobject::NsObject};
+use crate::store::{
+    ignorer::Ignorer,
+    indexer::Indexer,
+    nsobject::{self, NsObject},
+};
 use std::fs;
 // use glob::glob;
-use std::path::{Path, PathBuf};
+use std::path::PathBuf;
 
 pub struct AddArgs {
     /// List of files/dirs to add
@@ -18,8 +22,16 @@ pub fn exec(args: AddArgs, config: Config) {
     let mut ignorer = Ignorer::new(config.get_root_unsafe());
     ignorer.active_nsignore(!args.force);
 
+    // Init indexer
+    let mut indexer = Indexer::new(config.get_root_unsafe());
+    dbg!(indexer.save());
+    dbg!(indexer.load());
+    return;
+
+    nsobject::init(config.get_root_unsafe());
+
     if args.all {
-        return add_dir(config.get_root_unsafe(), &mut ignorer);
+        return add_dir(config.get_root_unsafe(), &mut ignorer, &mut indexer);
     }
 
     for obj_to_add in args.files.iter() {
@@ -28,12 +40,12 @@ pub fn exec(args: AddArgs, config: Config) {
 
         if path_to_add.exists() {
             if path_to_add.is_dir() {
-                add_dir(&path_to_add, &mut ignorer);
+                add_dir(&path_to_add, &mut ignorer, &mut indexer);
             } else {
-                add_to_index(&path_to_add);
+                indexer.index_file(path_to_add);
             }
         } else if NsObject::from_local_path(&path_to_add).exists() {
-            add_to_index(&path_to_add);
+            indexer.index_file(path_to_add);
         } else {
             // try globbing
             // todo!()
@@ -58,8 +70,7 @@ pub fn exec(args: AddArgs, config: Config) {
 ///
 /// # Parameters
 /// * `dir`: the directory to add from
-/// * `force`: true if we should apply the nextsyncignore's rules
+fn add_dir(dir: &PathBuf, ignorer: &mut Ignorer, indexer: &mut Indexer) {
-fn add_dir(dir: &PathBuf, ignorer: &mut Ignorer) {
     let entries = match fs::read_dir(dir) {
         Ok(entries) => entries,
         Err(err) => {
@@ -84,14 +95,10 @@ fn add_dir(dir: &PathBuf, ignorer: &mut Ignorer) {
         }
 
         if entry.path().is_dir() {
-            add_dir(&entry.path(), ignorer);
+            indexer.index_dir(entry.path().clone());
-            add_to_index(&entry.path());
+            add_dir(&entry.path(), ignorer, indexer);
         } else {
-            add_to_index(&entry.path());
+            indexer.index_file(entry.path());
         }
     }
 }
-
-fn add_to_index(path: &PathBuf) {
-    println!("{}", path.display());
-}

src/store.rs

@@ -1,4 +1,5 @@
 pub mod ignorer;
+pub mod indexer;
 pub mod nsignore;
-pub mod object;
 pub mod nsobject;
+pub mod object;

src/store/indexer.rs

@@ -0,0 +1,117 @@
+use crate::store::object::ObjType;
+use std::fs::File;
+use std::io::{self, Read, Seek, SeekFrom, Write};
+use std::path::PathBuf;
+
+fn get_level(previous_level: u16, path: &PathBuf) -> (u16, IndexLevel) {
+    let mut level = 0;
+    let mut path = path.clone();
+    while path.pop() {
+        level += 1;
+    }
+
+    let index_level = if previous_level < level {
+        IndexLevel::Down
+    } else {
+        IndexLevel::Up
+    };
+
+    (level, index_level)
+}
+
+enum IndexLevel {
+    Up,
+    Down,
+}
+
+struct IndexedObj {
+    obj_type: ObjType,
+    level: IndexLevel,
+    path: PathBuf,
+}
+
+pub struct Indexer {
+    index_file: PathBuf,
+    previous_level: u16,
+    indexed_objs: Vec<IndexedObj>,
+}
+
+impl Indexer {
+    pub fn new(repo_root: &PathBuf) -> Self {
+        let mut index_file = repo_root.clone();
+        index_file.push(".nextsync");
+        index_file.push("index");
+
+        Indexer {
+            index_file,
+            previous_level: 0,
+            indexed_objs: Vec::new(),
+        }
+    }
+
+    pub fn load(&self) -> io::Result<()> {
+        let mut file = File::open(&self.index_file)?;
+        let mut str = String::new();
+
+        // Skip reserved bytes
+        let mut byte = [0; 1];
+        file.read_exact(&mut byte)?;
+        file.seek(SeekFrom::Start(1))?;
+
+        // Read usize value
+        let mut usize_bytes = [0; std::mem::size_of::<usize>()];
+        file.read_exact(&mut usize_bytes)?;
+        dbg!(ObjType::try_from(byte[0]));
+        let usize_value = usize::from_le_bytes(usize_bytes);
+
+        // Read PathBuf as string
+        let mut buffer = Vec::new();
+        file.read_to_end(&mut buffer)?;
+        let path_str = String::from_utf8(buffer).unwrap();
+        let path = PathBuf::from(path_str);
+
+        println!("usize value: {}", usize_value);
+        println!("Path: {:?}", path);
+        Ok(())
+    }
+
+    fn index_obj(&mut self, path: PathBuf, obj_type: ObjType) {
+        let (level, index_level) = get_level(self.previous_level, &path);
+        self.previous_level = level;
+
+        self.indexed_objs.push(IndexedObj {
+            obj_type,
+            level: index_level,
+            path: path.clone(),
+        });
+    }
+
+    pub fn index_file(&mut self, path: PathBuf) {
+        self.index_obj(path, ObjType::Blob);
+    }
+
+    pub fn index_dir(&mut self, path: PathBuf) {
+        self.index_obj(path, ObjType::Tree);
+    }
+
+    pub fn save(&self) -> io::Result<()> {
+        let mut file = File::create(&self.index_file)?;
+
+        // Write reserved bytes
+        let variant = ObjType::Blob;
+        let byte: u8 = variant.into();
+        file.write_all(&[byte])?;
+
+        // Write usize value
+        let usize_value: usize = 12;
+        let usize_bytes = usize_value.to_le_bytes();
+        file.write_all(&usize_bytes)?;
+
+        // Write PathBuf as string
+        let path = PathBuf::from("/jodi/");
+        let path_str = path.to_str().unwrap();
+        file.write_all(path_str.as_bytes())?;
+
+        Ok(())
+    }
+}

src/store/nsobject.rs

@@ -4,6 +4,12 @@ use crypto::sha1::Sha1;
 use std::path::PathBuf;
 use std::sync::OnceLock;
 
+pub static REPO_ROOT: OnceLock<PathBuf> = OnceLock::new();
+
+pub fn init(repo_root: &PathBuf) {
+    REPO_ROOT.set(repo_root.clone());
+}
+
 type NsObjectChilds = Vec<Box<NsObject>>;
 
 struct NsObjectPath {
@@ -14,7 +20,12 @@ impl From<&str> for NsObjectPath {
     fn from(hash: &str) -> Self {
         let (dir, res) = hash.split_at(2);
 
-        let mut ns_obj_path = PathBuf::new();
+        let mut ns_obj_path = match REPO_ROOT.get() {
+            Some(path) => path.clone(),
+            None => {
+                panic!("fatal: 'REPO_ROOT' not set, you must initialize nsobject before using it!")
+            }
+        };
         ns_obj_path.push(dir);
         ns_obj_path.push(res);
 
@@ -107,15 +118,14 @@ impl NsObject {
     /// first line consists of all size fixed datas (obj_type, size, modified)
     /// next lines are the size variable datas
     ///
-    /// * if it is a Tree obj after an empty line there will be the definition 
+    /// * if it is a Tree obj after an empty line there will be the definition
     /// of its subobjs (one line by subobj) *
     /// obj_type + hash
     pub fn save(&self) -> Result<(), ()> {
-        if !self.get_obj_path().exists {
+        if !self.get_obj_path().exists() {
             // delete current obj
             // delete reference on parent
         } else {
-
         }
         Ok(())
     }

src/store/object.rs

@@ -12,13 +12,34 @@ pub struct ObjMetadata {
     modified: Option<SystemTime>,
 }
 
-#[derive(PartialEq, Clone)]
+#[derive(PartialEq, Clone, Debug)]
+#[repr(u8)]
 pub enum ObjType {
     Obj,
     Blob,
     Tree,
 }
 
+impl From<ObjType> for u8 {
+    fn from(variant: ObjType) -> Self {
+        variant as u8
+    }
+}
+
+
+impl TryFrom<u8> for ObjType {
+    type Error = String;
+
+    fn try_from(byte: u8) -> Result<Self, Self::Error> {
+        match byte {
+            0 => Ok(ObjType::Obj),
+            1 => Ok(ObjType::Blob),
+            2 => Ok(ObjType::Tree),
+            _ => Err(format!("Invalid byte value: {}", byte)),
+        }
+    }
+}
+
 #[derive(PartialEq, Clone)]
 pub enum ObjStatus {
     Undefined,