Lines
0 %
Functions
use serde::{Deserialize, Serialize};
use crate::{
commands::{CommandRequest, CommandResponse, RequestParserError, ResponseParserError},
filter::Filter,
request_tokenizer::RequestTokenizer,
response_tokenizer::ResponseAttributes,
types::{DbSelectionPrintResponse, DbSongInfo, Sort, WindowRange},
};
#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct FindRequest {
filter: Filter,
sort: Option<Sort>,
window: Option<WindowRange>,
}
impl FindRequest {
pub fn new(filter: Filter, sort: Option<Sort>, window: Option<WindowRange>) -> Self {
Self {
filter,
sort,
window,
impl CommandRequest for FindRequest {
type Response = FindResponse;
const COMMAND: &'static str = "find";
const MIN_ARGS: u32 = 1;
const MAX_ARGS: Option<u32> = Some(3);
fn serialize(&self) -> String {
let mut cmd = format!("{} {}", Self::COMMAND, self.filter);
if let Some(sort) = &self.sort {
cmd.push_str(&format!(" sort {}", sort));
if let Some(window) = &self.window {
cmd.push_str(&format!(" window {}", window));
cmd.push('\n');
cmd
fn parse(mut parts: RequestTokenizer<'_>) -> Result<Self, RequestParserError> {
let filter = match parts.next() {
Some(f) => {
Filter::parse(f).map_err(|_| RequestParserError::SyntaxError(1, f.to_owned()))?
None => return Err(Self::missing_arguments_error(0)),
let mut argument_index_counter = 0;
let mut sort_or_window = parts.next();
let mut sort = None;
if let Some("sort") = sort_or_window {
argument_index_counter += 1;
let s = parts
.next()
.ok_or(RequestParserError::MissingKeywordValue {
keyword: "sort",
argument_index: argument_index_counter,
})?;
sort = Some(
s.parse()
.map_err(|_| RequestParserError::SubtypeParserError {
expected_type: "Sort",
raw_input: s.to_string(),
})?,
);
sort_or_window = parts.next();
let mut window = None;
if let Some("window") = sort_or_window {
let w = parts
keyword: "window",
window = Some(
w.parse()
expected_type: "WindowRange",
raw_input: w.to_string(),
Self::throw_if_too_many_arguments(parts)?;
Ok(FindRequest {
})
pub struct FindResponse(Vec<DbSongInfo>);
impl FindResponse {
pub fn new(items: Vec<DbSongInfo>) -> Self {
FindResponse(items)
impl CommandResponse for FindResponse {
type Request = FindRequest;
fn parse(parts: ResponseAttributes<'_>) -> Result<Self, ResponseParserError> {
DbSelectionPrintResponse::parse(parts)?
.into_iter()
.map(|i| match i {
DbSelectionPrintResponse::Song(db_song_info) => Ok(db_song_info),
DbSelectionPrintResponse::Directory(_db_directory_info) => Err(
ResponseParserError::UnexpectedProperty("directory".to_string()),
),
DbSelectionPrintResponse::Playlist(_db_playlist_info) => Err(
ResponseParserError::UnexpectedProperty("playlist".to_string()),
.collect::<Result<Vec<DbSongInfo>, ResponseParserError>>()
.map(FindResponse)
fn serialize(&self) -> Vec<u8> {
unimplemented!("response serialization is not yet implemented for FindResponse")