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// This file is part of Locus <https://github.com/gemrest/locus>.
// Copyright (C) 2022-2022 Fuwn <[email protected]>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 3.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// Copyright (C) 2022-2022 Fuwn <[email protected]>
// SPDX-License-Identifier: GPL-3.0-only
use crate::search::{INDEX, SCHEMA};
pub fn module(router: &mut windmark::Router) {
crate::track_mount(
router,
"/search",
"A search engine for this Gemini capsule",
Box::new(|context| {
let mut response =
String::from("# SEARCH\n\n=> /search?action=go Search!");
if let Some(query) = context.url.query_pairs().next() {
if query.0 == "action" && query.1 == "go" {
return windmark::Response::Input(
"What would you like to search for?".to_string(),
);
}
{
let path = (*SCHEMA.lock().unwrap()).get_field("path").unwrap();
let description =
(*SCHEMA.lock().unwrap()).get_field("description").unwrap();
let content = (*SCHEMA.lock().unwrap()).get_field("content").unwrap();
let mut results = String::new();
let searcher = (*INDEX.lock().unwrap())
.reader_builder()
.reload_policy(tantivy::ReloadPolicy::OnCommit)
.try_into()
.unwrap()
.searcher();
let top_docs = searcher
.search(
&tantivy::query::QueryParser::for_index(
&(*INDEX.lock().unwrap()),
vec![path, description, content],
)
.parse_query(&query.0.to_string())
.unwrap(),
&tantivy::collector::TopDocs::with_limit(crate::SEARCH_SIZE),
)
.unwrap();
for (_score, document_address) in top_docs {
let retrieved_document = searcher.doc(document_address).unwrap();
macro_rules! text {
($field:ident) => {{
retrieved_document
.get_first($field)
.unwrap()
.as_text()
.unwrap()
}};
($document:ident, $field:ident) => {{
$document.get_first($field).unwrap().as_text().unwrap()
}};
}
results +=
&format!("=> {} {}{}\n", text!(path), text!(description), {
let mut lines = retrieved_document
.get_first(content)
.unwrap()
.as_text()
.unwrap()
.lines()
.skip(2);
lines.next().map_or_else(
|| "".to_string(),
|first_line| {
format!(
"\n> ... {}\n> {}\n> {} ...",
first_line,
lines.next().unwrap_or(""),
lines.next().unwrap_or("")
)
},
)
});
}
response += &format!(
"\n\nYou searched for \"{}\"!\n\n## RESULTS\n\n{}\n\nIn need of \
more results? This search engine populates its index with route \
paths and route descriptions on startup. However, route content \
isn't populated until the route is first visited. After a \
route's first visit, it is updated after every five minutes, at \
time of visit.",
query.0,
if results.is_empty() {
"There are no results for your query...".to_string()
} else {
results.trim_end().to_string()
},
);
}
}
crate::success!(response, context)
}),
);
}
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