Documentation pass

src/editor/commands.rs

@@ -1,3 +1,4 @@
+//! Commands to run from the command line other than launching a server instance
 pub mod editor;
 pub mod fetch;
 pub mod init;

src/editor/commands/editor.rs

@@ -1,3 +1,6 @@
+//! Command for editing the record associated with a provided query string
+//! in the system-defined editor
+
 use crate::args_parser::SaveSettings;
 use crate::editor::open_in_editor::open_resource_in_editor;
 use crate::schema::lookup_handler::LookupHandler;

src/editor/commands/fetch.rs

@@ -1,7 +1,6 @@
 use crate::args_parser::SaveSettings;
 use crate::editor::finger_remote::finger_many_fedi;
 use crate::schema::resource_list::ResourceList;
-use std::io::{BufRead, BufReader};
 use std::path::PathBuf;
 use tracing::{debug, error, info, instrument, trace, warn};
 

src/editor/finger_remote.rs

@@ -1,3 +1,5 @@
+//! Utilities for running a WebFinger query against a remote target
+
 use crate::editor::finger_remote::FediFingerError::UrlBuildFailed;
 use crate::schema::resource::Resource;
 use reqwest::blocking::Client;
@@ -6,7 +8,7 @@ use std::fmt::Display;
 use thiserror::Error;
 use tracing::{debug, error, instrument};
 
-/// Error type returned by `finger_url`
+/// Error type returned by [`finger_url`]
 #[derive(Debug, Error)]
 #[allow(clippy::enum_variant_names)]
 pub enum FingerError {
@@ -18,7 +20,7 @@ pub enum FingerError {
     ParseFailed(reqwest::Error),
 }
 
-/// Run a WebFinger request at the provided URL and parse it as a `Resource`
+/// Run a WebFinger request at the provided URL and parse it as a [`Resource`]
 #[instrument(skip(client))]
 pub fn finger_url(client: &Client, url: Url) -> Result<Resource, FingerError> {
     use FingerError::*;
@@ -31,7 +33,7 @@ pub fn finger_url(client: &Client, url: Url) -> Result<Resource, FingerError> {
     Ok(response)
 }
 
-/// Error type returned by `finger_fedi`
+/// Error type returned by [`finger_fedi`]
 #[derive(Debug, Error)]
 pub enum FediFingerError {
     #[error("Couldn't find the middle @ symbol")]

src/editor/mod.rs

@@ -1,3 +1,4 @@
+//! Utilities for editing records in a database stored on disk
 pub mod commands;
 pub mod finger_remote;
 pub mod open_in_editor;

src/editor/open_in_editor.rs

@@ -1,3 +1,5 @@
+//! Utilities for opening a string in the system-defined editor 
+
 use crate::schema::resource::Resource;
 use std::fmt::{Debug, Display};
 use std::io::{Read, Seek, SeekFrom, Write};
@@ -6,7 +8,7 @@ use tempfile::NamedTempFile;
 use thiserror::Error;
 use tracing::{debug, instrument, trace, warn};
 
-/// Error type returned by `spawn_editor`
+/// Error type returned by [`spawn_editor`]
 #[derive(Debug, Error)]
 pub enum EditorSpawnError {
     #[error("failed to parse out absolute path of editor: {0}")]
@@ -27,7 +29,8 @@ pub enum EditorSpawnError {
     BufferReadbackFailed(std::io::Error),
 }
 
-/// Spawn the system editor to edit the provided `buffer`. Returns the edited buffer or an error if something goes wrong
+/// Spawn the system editor to edit the provided `buffer`.
+/// Returns the edited buffer or an error if something goes wrong
 #[instrument(skip_all)]
 pub fn spawn_editor(buffer: impl AsRef<str> + Display) -> Result<String, EditorSpawnError> {
     use EditorSpawnError::*;

src/editor/try_reload_server.rs

@@ -1,3 +1,5 @@
+//! Utility functions for attempting to reload a running server instance of the application
+
 use crate::args_parser::ServerReloadOptions;
 use nix::sys::signal::{kill, Signal};
 use nix::unistd::Pid;
@@ -7,8 +9,9 @@ use std::str::FromStr;
 use thiserror::Error;
 use tracing::{error, info};
 
+/// Error type returned by [`try_reload_server`] and [`load_pid`]
 #[derive(Debug, Error)]
-pub enum ServerReloadError {
+enum ServerReloadError {
     #[error("Couldn't find PID file at {0}")]
     PIDFileNotFound(String),
     #[error("Failed to open PID file: {0}")]
@@ -21,6 +24,7 @@ pub enum ServerReloadError {
     FailedToSendSignal(#[from] nix::errno::Errno),
 }
 
+/// Tries to load and parse the PID file at the provided path
 fn load_pid(pid_file_path: &Path) -> Result<Pid, ServerReloadError> {
     use ServerReloadError::*;
     if !pid_file_path.exists() {
@@ -34,12 +38,14 @@ fn load_pid(pid_file_path: &Path) -> Result<Pid, ServerReloadError> {
     Ok(Pid::from_raw(pid))
 }
 
+/// Tries to send a reload command to the server instance
 fn try_reload_server(pid_file_path: &Path) -> Result<(), ServerReloadError> {
     let pid = load_pid(pid_file_path)?;
     kill(pid, Signal::SIGHUP)?;
     Ok(())
 }
 
+/// Attempts to reload an already running server instance of the application, logging an error if it was unsuccessful.
 pub fn reload(pid_file_path: PathBuf, options: ServerReloadOptions) {
     if options.reload_server {
         info!("Attempting to reload server...");

src/schema/lookup_handler.rs

@@ -1,3 +1,5 @@
+//! Struct for storing WebFinger resources and running queries against them
+
 use crate::schema::resource::Resource;
 use crate::schema::resource_list::{ResourceList, ResourceLoadError};
 use std::collections::HashMap;
@@ -25,25 +27,31 @@ pub enum DataLoadError {
 }
 
 impl LookupHandler {
-    /// Load and prepare a new LookupHandler from the file at `path`
+    /// Load and prepare a new [`LookupHandler`] from the file at `path`
     #[instrument(level = "debug", skip(path))]
     pub fn load(path: impl AsRef<Path> + Debug) -> Result<Self, DataLoadError> {
         Self::build_from_resource_list(ResourceList::load(path)?)
     }
 
+    /// Load and prepare a new [`LookupHandler`] from the provided reader
     #[cfg(test)]
     fn load_from_reader(reader: impl std::io::Read) -> Result<Self, DataLoadError> {
         Self::build_from_resource_list(ResourceList::load_from_reader(reader)?)
     }
 
+    /// Build a new [`LookupHandler`] from the provided [`ResourceList`]
     fn build_from_resource_list(resources: ResourceList) -> Result<Self, DataLoadError> {
-        let mut lookup = HashMap::new();
         debug!("Building lookup map...");
+
+        let mut lookup = HashMap::new();
         for (index, resource) in resources.0.iter().enumerate() {
             for lookup_to_add in resource.keys() {
                 let lookup_to_add = lookup_to_add.to_lowercase();
+
                 debug!("Adding {lookup_to_add} for {}", resource.subject);
-                if let Some(duplicate) = lookup.insert(lookup_to_add.clone(), index) {
+                let duplicate = lookup.insert(lookup_to_add.clone(), index);
+
+                if let Some(duplicate) = duplicate {
                     return Err(DataLoadError::DuplicateLookupFound {
                         duplicated: lookup_to_add,
                         subjects: [
@@ -54,24 +62,33 @@ impl LookupHandler {
                 }
             }
         }
+
         info!("Aggregated {} lookup strings", lookup.len());
         Ok(LookupHandler { resources, lookup })
     }
 
+    /// Run the provided `resource_query` on the index and return a borrow of the returned resource
     #[instrument(level = "debug")]
     pub fn lookup(&self, resource_query: &str) -> Option<&Resource> {
         self.lookup_with_index(resource_query)
             .map(|(_index, resource)| resource)
     }
 
+    /// Run the provided `resource_query` on the index and
+    /// return a borrow of the returned resource and its index in the database
     pub fn lookup_with_index(&self, resource_query: &str) -> Option<(usize, &Resource)> {
         let resource_query = resource_query.to_lowercase();
+
         let resource_index = *self.lookup.get(resource_query.as_str())?;
+
         let found_resource = &self.resources.0[resource_index];
+
         debug!("Lookup for {resource_query} returned {found_resource:?}");
         Some((resource_index, found_resource))
     }
 
+    /// Convert the [`LookupHandler`] into its internal [`ResourceList`]
+    #[allow(dead_code)]
     pub fn into_inner(self) -> ResourceList {
         self.resources
     }

src/schema/mod.rs

@@ -1,3 +1,5 @@
+//! "Schema" of the internal representation of WebFinger data
+
 pub mod lookup_handler;
 pub mod resource;
 pub mod resource_list;

src/schema/resource.rs

@@ -1,3 +1,5 @@
+//! A single WebFinger resource and associated utility functions
+
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 use std::fmt::{Debug, Display, Formatter};
@@ -6,11 +8,15 @@ use tracing::debug;
 /// A single WebFinger resource
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub struct Resource {
+    /// The subject of this resource
     pub subject: String,
+    /// Known aliases of the resource to also respond to
     #[serde(skip_serializing_if = "Option::is_none")]
     pub aliases: Option<Vec<String>>,
+    /// List of properties associated with the resource
     #[serde(skip_serializing_if = "Option::is_none")]
     pub properties: Option<HashMap<String, Option<String>>>,
+    /// Links associated with the resource
     #[serde(skip_serializing_if = "Option::is_none")]
     pub links: Option<Vec<Link>>,
 }
@@ -23,6 +29,7 @@ impl Display for Resource {
 }
 
 impl Resource {
+    /// Creates a new completely blank WebFinger resource with the provided subject
     pub fn new(subject: String) -> Self {
         Self {
             subject,
@@ -33,7 +40,7 @@ impl Resource {
     }
 
     /// Returns the aliases of the given record. If the `aliases` field is
-    /// entirely missing, returns &[].
+    /// entirely missing, returns an empty array.
     pub fn keys(&self) -> impl Iterator<Item = &String> {
         let aliases = if let Some(aliases) = &self.aliases {
             aliases.as_slice()
@@ -44,13 +51,18 @@ impl Resource {
         aliases.iter().chain(std::iter::once(&self.subject))
     }
 
+    /// Replaces the current `subject` field of the WebFinger resource
+    /// with a new value and pushes the old value into the aliases field
+    /// if it is not already present there
     pub fn add_new_primary_subject(&mut self, mut subject: String) {
         if subject == self.subject {
             debug!("New and old subjects match, skipping...");
             return;
         }
+
         debug!("Swapping new and old subject");
         std::mem::swap(&mut subject, &mut self.subject);
+
         debug!("Pushing current subject into aliases");
         if let Some(ref mut aliases) = self.aliases {
             if !aliases.contains(&subject) {
@@ -147,14 +159,13 @@ pub struct Link {
 /// Functions to generate data for testing functions that manipulate `Resource` structs
 pub mod test_data {
     use crate::schema::resource::Resource;
+
+    /// A [`Resource`] with only the `subject` field set
     pub fn barebones_user() -> Resource {
-        Resource {
-            subject: "acct:user@domain.tld".to_string(),
-            aliases: None,
-            properties: None,
-            links: None,
-        }
+        Resource::new("acct:user@domain.tld".to_string())
     }
+
+    /// A default [`Resource`] with a single alias
     pub fn user_with_single_alias() -> Resource {
         Resource {
             subject: "acct:user@domain.tld".to_string(),
@@ -164,6 +175,7 @@ pub mod test_data {
         }
     }
 
+    /// A default [`Resource`] with a single alias that matches the subject
     pub fn user_with_matching_subject_and_alias() -> Resource {
         Resource {
             subject: "acct:user@domain.tld".to_string(),

src/schema/resource_list.rs

@@ -1,3 +1,5 @@
+//! An array of [`Resource`]s with a builtin way to serialise and deserialise to file and/or stream
+
 use crate::args_parser::CollisionHandling;
 use crate::schema::resource::Resource;
 use std::collections::HashSet;
@@ -6,9 +8,11 @@ use std::path::Path;
 use thiserror::Error;
 use tracing::{debug, info, instrument, trace, warn};
 
+/// A dynamic array of [`Resource`]s
 #[derive(Debug, Clone)]
 pub struct ResourceList(pub Vec<Resource>);
 
+/// Error type returned by [`ResourceList::load`] and [`ResourceList::load_from_reader`]
 #[derive(Debug, Error)]
 pub enum ResourceLoadError {
     #[error("failed to open the resource database: {0}")]
@@ -17,7 +21,9 @@ pub enum ResourceLoadError {
     FileParse(#[from] serde_json::Error),
 }
 
+/// Error type returned by [`ResourceList::save`] and [`ResourceList::save_to_writer`]
 #[derive(Debug, Error)]
+#[allow(unused)]
 pub enum ResourceSaveError {
     #[error("Failed to open the resource database for writing: {0}")]
     FileOpen(std::io::Error),
@@ -28,7 +34,7 @@ pub enum ResourceSaveError {
 }
 
 impl ResourceList {
-    /// Loads the `Resource`s from the given `path`
+    /// Loads the [`Resource`]s from the given `path`
     #[instrument(level = "debug")]
     pub fn load(path: impl AsRef<Path> + Debug) -> Result<Self, ResourceLoadError> {
         info!("Loading data from {path:?}...");
@@ -36,7 +42,7 @@ impl ResourceList {
         Self::load_from_reader(file)
     }
 
-    /// Loads the `Resource`s from the given reader
+    /// Loads the [`Resource`]s from the given reader
     pub fn load_from_reader(reader: impl std::io::Read) -> Result<Self, ResourceLoadError> {
         let reader = std::io::BufReader::new(reader);
         debug!("Parsing as JSON...");
@@ -46,6 +52,8 @@ impl ResourceList {
         Ok(Self(resources))
     }
 
+    /// Save the [`Resource`]s to the given `path`, backing up the file if it is already present
+    /// to `path.bak`
     #[instrument(level = "debug", skip(path, self))]
     pub fn save(&self, path: impl AsRef<Path>) -> Result<(), ResourceSaveError> {
         info!("Creating backup before writing...");
@@ -57,6 +65,7 @@ impl ResourceList {
         self.save_to_writer(file)
     }
 
+    /// Save the [`Resource`]s into the given `writer`
     pub fn save_to_writer(&self, writer: impl std::io::Write) -> Result<(), ResourceSaveError> {
         trace!("{self:?}");
         let writer = std::io::BufWriter::new(writer);
@@ -64,7 +73,8 @@ impl ResourceList {
         Ok(serde_json::to_writer(writer, &self.0)?)
     }
 
-    /// Merges `new_records` into the `ResourceList` with lookup collisions being handled as defined in `collision_handling`
+    /// Merges `new_records` into the [`ResourceList`] with lookup collisions
+    /// being handled as defined in `collision_handling`
     #[instrument(level = "debug", skip(self, new_records))]
     pub fn merge_records(
         &mut self,
@@ -74,6 +84,7 @@ impl ResourceList {
         debug!("Building hashset of already taken queries...");
         let unique_check: HashSet<String> =
             HashSet::from_iter(self.0.iter().flat_map(Resource::keys).cloned());
+
         for record in new_records {
             let record_keys = HashSet::from_iter(record.keys().cloned());
             let collisions = unique_check