From bc2ed11bb44634d283b3d522e44024d813fedbf5 Mon Sep 17 00:00:00 2001
From: OMGeeky <aalaalgmx@gmail.com>
Date: Sun, 18 Feb 2024 15:16:57 +0100
Subject: [PATCH] meta file content

---
 Cargo.lock                                 |  1 +
 concept.md                                 |  7 ++--
 gdriver-common/Cargo.toml                  |  1 +
 gdriver-common/src/drive_structure.rs      |  1 +
 gdriver-common/src/drive_structure/meta.rs | 41 ++++++++++++++++++++++
 gdriver-common/src/ipc/gdriver_service.rs  | 13 ++++++-
 6 files changed, 58 insertions(+), 6 deletions(-)
 create mode 100644 gdriver-common/src/drive_structure/meta.rs

diff --git a/Cargo.lock b/Cargo.lock
index 71a6c49..ff53a12 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -432,6 +432,7 @@ dependencies = [
  "futures",
  "lazy_static",
  "serde",
+ "serde_json",
  "tarpc",
  "thiserror",
  "tokio",
diff --git a/concept.md b/concept.md
index 09fe53e..cac3fbd 100644
--- a/concept.md
+++ b/concept.md
@@ -27,11 +27,8 @@ the filename being the file id with no extension. The metadata will be on a file
 the meta folder, this file will always be created (or updated), no matter if only the content or only the metadata was 
 requested. 
 
-The meta file will be a simple UTF-8 file, containing a number from 0 to 2:
-
-- 0: only metadata was fetched, no content available
-- 1: content was fetched to cache
-- 2: content was fetched to downloads
+The meta file will be a simple UTF-8 json-file, containing the metadata of the file and the download state 
+(MetadataOnly/Cached/Downloaded)
 
 ---
 
diff --git a/gdriver-common/Cargo.toml b/gdriver-common/Cargo.toml
index 5245780..7718525 100644
--- a/gdriver-common/Cargo.toml
+++ b/gdriver-common/Cargo.toml
@@ -15,5 +15,6 @@ confique={ version = "0.2" }
 thiserror = "1.0"
 anyhow = "1.0.79"
 directories = "5.0"
+serde_json = "1.0.111"
 #[patch.crates-io]
 #confique = {path="~/Documents/git/OMGeeky/confique "}
diff --git a/gdriver-common/src/drive_structure.rs b/gdriver-common/src/drive_structure.rs
index 31aafdb..5ef6a77 100644
--- a/gdriver-common/src/drive_structure.rs
+++ b/gdriver-common/src/drive_structure.rs
@@ -1 +1,2 @@
 pub mod drive_id;
+pub mod meta;
diff --git a/gdriver-common/src/drive_structure/meta.rs b/gdriver-common/src/drive_structure/meta.rs
new file mode 100644
index 0000000..7ffe012
--- /dev/null
+++ b/gdriver-common/src/drive_structure/meta.rs
@@ -0,0 +1,41 @@
+use crate::prelude::*;
+use serde::{Deserialize, Serialize};
+use std::collections::BTreeMap;
+use std::fs::File;
+use std::path::Path;
+pub type TIMESTAMP = (i64, u32);
+#[derive(Serialize, Deserialize, Clone, PartialEq, Debug)]
+pub struct Metadata {
+    pub state: FileState,
+    pub size: u64,
+    pub last_accessed: TIMESTAMP,
+    pub last_modified: TIMESTAMP,
+    pub last_metadata_changed: TIMESTAMP,
+    pub kind: FileKind,
+    pub mode: u16,
+    pub hardlinks: u32,
+    pub uid: u32,
+    pub gid: u32,
+    pub xattrs: BTreeMap<Vec<u8>, Vec<u8>>,
+}
+pub fn read_metadata_file(path: &Path) -> Result<Metadata> {
+    let reader = File::open(path)?;
+    Ok(serde_json::from_reader(reader)?)
+}
+pub fn write_metadata_file(path: &Path, metadata: &Metadata) -> Result<()> {
+    let reader = File::open(path)?;
+    Ok(serde_json::to_writer(reader, metadata)?)
+}
+#[derive(Serialize, Deserialize, Copy, Clone, PartialEq, Debug)]
+pub enum FileState {
+    Downloaded,
+    Cached,
+    MetadataOnly,
+}
+
+#[derive(Serialize, Deserialize, Copy, Clone, PartialEq, Debug)]
+pub enum FileKind {
+    File,
+    Directory,
+    Symlink,
+}
diff --git a/gdriver-common/src/ipc/gdriver_service.rs b/gdriver-common/src/ipc/gdriver_service.rs
index 65d3780..287d97c 100644
--- a/gdriver-common/src/ipc/gdriver_service.rs
+++ b/gdriver-common/src/ipc/gdriver_service.rs
@@ -1,6 +1,6 @@
 use crate::prelude::*;
 use std::ffi::OsString;
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 
 use serde::{Deserialize, Serialize};
 
@@ -45,6 +45,17 @@ pub struct GDriverSettings {
     cache_path: PathBuf,
     downloaded_path: PathBuf,
 }
+impl GDriverSettings {
+    pub fn metadata_path(&self) -> &Path {
+        &self.metadata_path
+    }
+    pub fn cache_path(&self) -> &Path {
+        &self.cache_path
+    }
+    pub fn downloaded_path(&self) -> &Path {
+        &self.downloaded_path
+    }
+}
 
 impl Default for GDriverSettings {
     fn default() -> Self {