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//! Filesystem browsing helpers.
use super::utils::normalize_path;
use crate::error::Result;
use crate::fs::node::{Node, NodeType};
use crate::session::Session;
impl Session {
/// Return the Cloud Drive root, Inbox, Trash, and Network nodes.
pub fn root_nodes(&self) -> Vec<&Node> {
self.nodes
.iter()
.filter(|n| {
matches!(
n.node_type,
NodeType::Root | NodeType::Inbox | NodeType::Trash | NodeType::Network
)
})
.collect()
}
/// List files in a directory.
///
/// # Arguments
/// * `path` - The path to list (e.g., "/Root", "/Root/Documents")
/// * `recursive` - If true, list all descendants recursively
///
/// The Cloud Drive root is `/Root`.
///
/// # Returns
/// Vector of nodes matching the path
pub fn list(&self, path: &str, recursive: bool) -> Result<Vec<&Node>> {
let normalized_path = normalize_path(path);
let search_prefix = if normalized_path == "/" {
"/".to_string()
} else {
format!("{}/", normalized_path)
};
let mut results = Vec::new();
for node in &self.nodes {
if let Some(node_path) = &node.path {
if recursive {
// Include all nodes under this path
if node_path.starts_with(&search_prefix) && node_path != &normalized_path {
results.push(node);
}
} else {
// Include only direct children
if let Some(stripped) = node_path.strip_prefix(&search_prefix)
&& !stripped.contains('/')
&& !stripped.is_empty()
{
results.push(node);
}
}
}
}
Ok(results)
}
/// List all contacts.
///
/// Returns all nodes of type Contact. Contacts are users who have
/// interacted with your shared files or folders.
///
/// # Example
/// ```no_run
/// # use megalib::SessionHandle;
/// # async fn example() -> megalib::error::Result<()> {
/// let mut session = SessionHandle::login("user@example.com", "password").await?;
/// session.refresh().await?;
/// for contact in session.list_contacts().await? {
/// println!("Contact: {}", contact.name);
/// }
/// # Ok(())
/// # }
/// ```
pub fn list_contacts(&self) -> Vec<&Node> {
self.nodes.iter().filter(|n| n.is_contact()).collect()
}
/// Get information about a file or folder by path.
///
/// # Arguments
/// * `path` - The path to stat
///
/// # Returns
/// Node information if found
pub fn stat_by_path(&self, path: &str) -> Option<&Node> {
let normalized_path = normalize_path(path);
self.nodes
.iter()
.find(|n| n.path.as_deref() == Some(&normalized_path))
}
/// Get a node by its handle.
///
/// # Arguments
/// * `handle` - The node handle (e.g., "ABC123xyz")
///
/// # Returns
/// Node reference if found
///
/// # Example
/// ```no_run
/// # use megalib::SessionHandle;
/// # async fn example() -> megalib::error::Result<()> {
/// let mut session = SessionHandle::login("user@example.com", "password").await?;
/// session.refresh().await?;
/// if let Some(node) = session.get_node_by_handle("ABC123").await? {
/// println!("Found: {}", node.name);
/// }
/// # Ok(())
/// # }
/// ```
pub fn get_node_by_handle(&self, handle: &str) -> Option<&Node> {
self.nodes.iter().find(|n| n.handle == handle)
}
/// Return the direct children of a node handle from the cached tree.
pub fn children_by_handle(&self, parent_handle: &str) -> Vec<&Node> {
self.nodes
.iter()
.filter(|n| n.parent_handle.as_deref() == Some(parent_handle))
.collect()
}
/// Return a direct child of a node handle by name.
pub fn child_node_by_name_handle(&self, parent_handle: &str, name: &str) -> Option<&Node> {
self.children_by_handle(parent_handle)
.into_iter()
.find(|node| node.name == name)
}
/// Return a direct child of a cached node by name.
pub fn child_node_by_name(&self, parent: &Node, name: &str) -> Option<&Node> {
self.child_node_by_name_handle(&parent.handle, name)
}
/// Return a direct child of a node handle by name and type.
pub fn child_node_by_name_type_handle(
&self,
parent_handle: &str,
name: &str,
node_type: NodeType,
) -> Option<&Node> {
self.children_by_handle(parent_handle)
.into_iter()
.find(|node| node.name == name && node.node_type == node_type)
}
/// Return a direct child of a cached node by name and type.
pub fn child_node_by_name_type(
&self,
parent: &Node,
name: &str,
node_type: NodeType,
) -> Option<&Node> {
self.child_node_by_name_type_handle(&parent.handle, name, node_type)
}
/// Return all descendants of a node handle from the cached tree.
pub fn descendants_by_handle(&self, parent_handle: &str) -> Vec<&Node> {
let Some(parent) = self.get_node_by_handle(parent_handle) else {
return Vec::new();
};
self.nodes
.iter()
.filter(|n| n.handle != parent.handle && self.node_has_ancestor(n, parent))
.collect()
}
/// Check if a node has a specific ancestor.
///
/// This walks up the parent chain to check if `ancestor` is in
/// the path from `node` to the root.
///
/// # Arguments
/// * `node` - The node to check
/// * `ancestor` - The potential ancestor node
///
/// # Returns
/// `true` if `ancestor` is in `node`'s parent chain
///
/// # Example
/// ```no_run
/// # use megalib::SessionHandle;
/// # async fn example() -> megalib::error::Result<()> {
/// let mut session = SessionHandle::login("user@example.com", "password").await?;
/// session.refresh().await?;
/// let file = session.stat("/Root/Documents/file.txt").await?.unwrap();
/// let folder = session.stat("/Root/Documents").await?.unwrap();
/// assert!(session.node_has_ancestor(&file, &folder).await?);
/// # Ok(())
/// # }
/// ```
pub fn node_has_ancestor(&self, node: &Node, ancestor: &Node) -> bool {
let mut current_handle = node.parent_handle.as_ref();
// Walk up the tree (max 100 levels to prevent infinite loops)
for _ in 0..100 {
match current_handle {
Some(handle) if handle == &ancestor.handle => return true,
Some(handle) => {
if let Some(parent) = self.get_node_by_handle(handle) {
current_handle = parent.parent_handle.as_ref();
} else {
return false;
}
}
None => return false,
}
}
false
}
/// Return all inbound share root nodes.
///
/// Mirrors the C++ SDK's `NodeManager::getNodesWithInShares`.
pub fn nodes_with_inshares(&self) -> Vec<&Node> {
self.nodes.iter().filter(|n| n.is_inshare).collect()
}
/// Return all outbound share root nodes.
///
/// Mirrors the C++ SDK's `NodeManager::getNodesWithOutShares`.
pub fn nodes_with_outshares(&self) -> Vec<&Node> {
self.nodes.iter().filter(|n| n.is_outshare).collect()
}
/// Return nodes with pending outgoing shares (not yet accepted/confirmed).
///
/// Mirrors the C++ SDK's `NodeManager::getNodesWithPendingOutShares`.
pub fn nodes_with_pending_outshares(&self) -> Vec<&Node> {
self.nodes
.iter()
.filter(|n| self.pending_outshares.contains_key(&n.handle))
.collect()
}
/// Return the Cloud Drive root, Inbox, Trash, and all inbound share roots.
///
/// Mirrors the C++ SDK's `NodeManager::getRootNodesAndInshares`.
pub fn root_nodes_and_inshares(&self) -> Vec<&Node> {
self.nodes
.iter()
.filter(|n| {
matches!(
n.node_type,
NodeType::Root | NodeType::Inbox | NodeType::Trash
) || n.is_inshare
})
.collect()
}
}
#[cfg(test)]
mod tests {
use crate::fs::{Node, NodeType};
use crate::session::Session;
fn node(name: &str, handle: &str, parent_handle: Option<&str>, node_type: NodeType) -> Node {
Node {
name: name.to_string(),
handle: handle.to_string(),
parent_handle: parent_handle.map(ToString::to_string),
node_type,
size: 0,
timestamp: 0,
key: vec![],
path: None,
link: None,
file_attr: None,
share_key: None,
share_handle: None,
is_inshare: false,
is_outshare: false,
share_access: None,
}
}
#[test]
fn root_nodes_returns_system_roots_only() {
let mut session = Session::test_dummy();
session.nodes = vec![
node("Root", "root", None, NodeType::Root),
node("Inbox", "inbox", None, NodeType::Inbox),
node("Trash", "trash", None, NodeType::Trash),
node("Network", "network", None, NodeType::Network),
node("Docs", "docs", Some("root"), NodeType::Folder),
];
let handles: Vec<&str> = session
.root_nodes()
.into_iter()
.map(|n| n.handle.as_str())
.collect();
assert_eq!(handles, vec!["root", "inbox", "trash", "network"]);
}
#[test]
fn children_lookup_uses_parent_handle() {
let mut session = Session::test_dummy();
session.nodes = vec![
node("Root", "root", None, NodeType::Root),
node("Docs", "docs", Some("root"), NodeType::Folder),
node("Photos", "photos", Some("root"), NodeType::Folder),
node("Nested", "nested", Some("docs"), NodeType::Folder),
];
let child_handles: Vec<&str> = session
.children_by_handle("root")
.into_iter()
.map(|n| n.handle.as_str())
.collect();
let nested_handles: Vec<&str> = session
.children_by_handle("docs")
.into_iter()
.map(|n| n.handle.as_str())
.collect();
assert_eq!(child_handles, vec!["docs", "photos"]);
assert_eq!(nested_handles, vec!["nested"]);
}
#[test]
fn descendants_walk_entire_subtree() {
let mut session = Session::test_dummy();
session.nodes = vec![
node("Root", "root", None, NodeType::Root),
node("Docs", "docs", Some("root"), NodeType::Folder),
node("Nested", "nested", Some("docs"), NodeType::Folder),
node("Deep", "deep", Some("nested"), NodeType::Folder),
node("notes.txt", "file", Some("docs"), NodeType::File),
node("deep.txt", "deep-file", Some("deep"), NodeType::File),
];
let descendant_handles: Vec<&str> = session
.descendants_by_handle("docs")
.into_iter()
.map(|n| n.handle.as_str())
.collect();
assert_eq!(
descendant_handles,
vec!["nested", "deep", "file", "deep-file"]
);
}
#[test]
fn child_lookup_by_name_and_type_uses_cached_parent() {
let mut session = Session::test_dummy();
session.nodes = vec![
node("Root", "root", None, NodeType::Root),
node("Docs", "docs-folder", Some("root"), NodeType::Folder),
node("Docs", "docs-file", Some("root"), NodeType::File),
node("Other", "other", Some("root"), NodeType::Folder),
];
let root = session.get_node_by_handle("root").unwrap().clone();
let by_name = session.child_node_by_name(&root, "Docs").unwrap();
let by_name_type = session
.child_node_by_name_type(&root, "Docs", NodeType::Folder)
.unwrap();
let by_name_type_handle = session
.child_node_by_name_type_handle("root", "Docs", NodeType::File)
.unwrap();
assert_eq!(by_name.handle, "docs-folder");
assert_eq!(by_name_type.handle, "docs-folder");
assert_eq!(by_name_type_handle.handle, "docs-file");
}
}