From 0c30e065b678d41d8932b3bf0926608cfa15a7ac Mon Sep 17 00:00:00 2001
From: metamuffin <metamuffin@disroot.org>
Date: Tue, 10 Jan 2023 08:44:06 +0100
Subject: first listing

---
 src/library.rs | 91 ++++++++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 82 insertions(+), 9 deletions(-)

(limited to 'src/library.rs')

diff --git a/src/library.rs b/src/library.rs
index 576ed77..e4c7fe6 100644
--- a/src/library.rs
+++ b/src/library.rs
@@ -1,23 +1,96 @@
-use anyhow::Ok;
+use std::{fs::File, path::PathBuf, str::FromStr, sync::Arc};
+
+use anyhow::{bail, Context, Ok};
+use chashmap::CHashMap;
+use serde::{Deserialize, Serialize};
 
 pub struct Library {
-    path: String,
-    tree: LibNode,
+    path: PathBuf,
+    cache: CHashMap<String, LibNode>, // TODO
 }
 
+#[derive(Debug, Clone)]
 pub enum LibNode {
-    Directory(LibDirectory),
-    Item(LibItem),
+    Directory(Arc<LibDirectory>),
+    Item(Arc<LibItem>),
+}
+
+#[derive(Debug, Clone)]
+pub struct LibDirectory {
+    pub path: PathBuf,
+    pub child_nodes: Vec<PathBuf>,
+    pub data: LibDirectoryData,
+}
+
+#[derive(Debug, Clone)]
+pub struct LibItem {
+    pub data: LibItemData,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct LibDirectoryData {
+    pub name: String,
 }
 
-pub struct LibDirectory {}
-pub struct LibItem {}
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct LibItemData {}
 
 impl Library {
     pub fn open(path: &str) -> anyhow::Result<Self> {
         Ok(Self {
-            path: path.to_string(),
-            tree: ,
+            path: PathBuf::from_str(path).unwrap(),
+            cache: CHashMap::new(),
         })
     }
+    pub fn root(&self) -> anyhow::Result<Arc<LibNode>> {
+        LibNode::from_path(self.path.clone())
+    }
+    pub fn nested(&self, path: &str) -> anyhow::Result<Arc<LibNode>> {
+        let mut n = self.root()?;
+        if path == "" {
+            return Ok(n);
+        }
+        for seg in path.split("/") {
+            n = n.get_directory()?.get_child(seg)?
+        }
+        Ok(n)
+    }
+}
+impl LibDirectory {
+    pub fn get_child(&self, p: &str) -> anyhow::Result<Arc<LibNode>> {
+        if p.contains("..") || p.starts_with("/") {
+            bail!("no! dont do that.")
+        }
+        let path = self.path.join(p);
+        // if !path.exists() {bail!("does not exist");}
+        LibNode::from_path(path)
+    }
+}
+impl LibNode {
+    pub fn get_directory(&self) -> anyhow::Result<&LibDirectory> {
+        match self {
+            LibNode::Directory(d) => Ok(d),
+            LibNode::Item(_) => bail!("not a directory"),
+        }
+    }
+    pub fn from_path(path: PathBuf) -> anyhow::Result<Arc<LibNode>> {
+        if path.is_dir() {
+            let mpath = path.join("directory.json");
+            let data: LibDirectoryData =
+                serde_json::from_reader(File::open(mpath).context("metadata missing")?)?;
+            let child_nodes = path.read_dir()?.map(|e| e.unwrap().path()).collect();
+            Ok(LibNode::Directory(Arc::new(LibDirectory {
+                path,
+                child_nodes,
+                data,
+            }))
+            .into())
+        } else if path.is_file() {
+            let mpath = path.clone().with_extension(".metadata.json");
+            let data: LibItemData = serde_json::from_reader(File::open(mpath)?)?;
+            Ok(LibNode::Item(Arc::new(LibItem { data })).into())
+        } else {
+            bail!("did somebody really put a fifo or socket in the library?!")
+        }
+    }
 }
-- 
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