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/*
* Copyright (c) 2021, Spencer Dixon <spencercdixon@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "Providers.h"
#include "FuzzyMatch.h"
#include <AK/LexicalPath.h>
#include <AK/URL.h>
#include <LibCore/DirIterator.h>
#include <LibCore/ElapsedTimer.h>
#include <LibCore/File.h>
#include <LibCore/StandardPaths.h>
#include <LibDesktop/Launcher.h>
#include <LibGUI/Clipboard.h>
#include <LibGUI/FileIconProvider.h>
#include <LibJS/Interpreter.h>
#include <LibJS/Lexer.h>
#include <LibJS/Parser.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <errno.h>
#include <fcntl.h>
#include <serenity.h>
#include <spawn.h>
#include <unistd.h>
namespace Assistant {
void AppResult::activate() const
{
if (chdir(Core::StandardPaths::home_directory().characters()) < 0) {
perror("chdir");
exit(1);
}
m_app_file->spawn();
}
void CalculatorResult::activate() const
{
GUI::Clipboard::the().set_plain_text(title());
}
void FileResult::activate() const
{
Desktop::Launcher::open(URL::create_with_file_protocol(title()));
}
void TerminalResult::activate() const
{
pid_t pid;
char const* argv[] = { "Terminal", "-e", title().characters(), nullptr };
if ((errno = posix_spawn(&pid, "/bin/Terminal", nullptr, nullptr, const_cast<char**>(argv), environ))) {
perror("posix_spawn");
} else {
if (disown(pid) < 0)
perror("disown");
}
}
void URLResult::activate() const
{
Desktop::Launcher::open(URL::create_with_url_or_path(title()));
}
void AppProvider::query(String const& query, Function<void(NonnullRefPtrVector<Result>)> on_complete)
{
if (query.starts_with("=") || query.starts_with('$'))
return;
NonnullRefPtrVector<Result> results;
Desktop::AppFile::for_each([&](NonnullRefPtr<Desktop::AppFile> app_file) {
auto match_result = fuzzy_match(query, app_file->name());
if (!match_result.matched)
return;
auto icon = GUI::FileIconProvider::icon_for_executable(app_file->executable());
results.append(adopt_ref(*new AppResult(icon.bitmap_for_size(16), app_file->name(), {}, app_file, match_result.score)));
});
on_complete(move(results));
}
void CalculatorProvider::query(String const& query, Function<void(NonnullRefPtrVector<Result>)> on_complete)
{
if (!query.starts_with("="))
return;
auto vm = JS::VM::create();
auto interpreter = JS::Interpreter::create<JS::GlobalObject>(*vm);
auto source_code = query.substring(1);
auto parser = JS::Parser(JS::Lexer(source_code));
auto program = parser.parse_program();
if (parser.has_errors())
return;
interpreter->run(interpreter->global_object(), *program);
if (interpreter->exception())
return;
auto result = interpreter->vm().last_value();
String calculation;
if (!result.is_number()) {
calculation = "0";
} else {
calculation = result.to_string_without_side_effects();
}
NonnullRefPtrVector<Result> results;
results.append(adopt_ref(*new CalculatorResult(calculation)));
on_complete(move(results));
}
Gfx::Bitmap const* FileResult::bitmap() const
{
return GUI::FileIconProvider::icon_for_path(title()).bitmap_for_size(16);
}
FileProvider::FileProvider()
{
build_filesystem_cache();
}
void FileProvider::query(const String& query, Function<void(NonnullRefPtrVector<Result>)> on_complete)
{
build_filesystem_cache();
if (m_fuzzy_match_work)
m_fuzzy_match_work->cancel();
m_fuzzy_match_work = Threading::BackgroundAction<NonnullRefPtrVector<Result>>::create(
[this, query](auto& task) {
NonnullRefPtrVector<Result> results;
for (auto& path : m_full_path_cache) {
if (task.is_cancelled())
return results;
auto match_result = fuzzy_match(query, path);
if (!match_result.matched)
continue;
if (match_result.score < 0)
continue;
results.append(adopt_ref(*new FileResult(path, match_result.score)));
}
return results;
},
[on_complete = move(on_complete)](auto results) {
on_complete(move(results));
});
}
void FileProvider::build_filesystem_cache()
{
if (m_full_path_cache.size() > 0 || m_building_cache)
return;
m_building_cache = true;
m_work_queue.enqueue("/");
Threading::BackgroundAction<int>::create(
[this](auto&) {
String slash = "/";
Core::ElapsedTimer timer;
timer.start();
while (!m_work_queue.is_empty()) {
auto base_directory = m_work_queue.dequeue();
if (base_directory.template is_one_of("/proc"sv, "/sys"sv))
continue;
Core::DirIterator di(base_directory, Core::DirIterator::SkipDots);
while (di.has_next()) {
auto path = di.next_path();
struct stat st = {};
if (fstatat(di.fd(), path.characters(), &st, AT_SYMLINK_NOFOLLOW) < 0) {
perror("fstatat");
continue;
}
if (S_ISLNK(st.st_mode))
continue;
auto full_path = LexicalPath::join(slash, base_directory, path).string();
m_full_path_cache.append(full_path);
if (S_ISDIR(st.st_mode)) {
m_work_queue.enqueue(full_path);
}
}
}
dbgln("Built cache in {} ms", timer.elapsed());
return 0;
},
[this](auto) {
m_building_cache = false;
});
}
void TerminalProvider::query(String const& query, Function<void(NonnullRefPtrVector<Result>)> on_complete)
{
if (!query.starts_with('$'))
return;
auto command = query.substring(1);
NonnullRefPtrVector<Result> results;
results.append(adopt_ref(*new TerminalResult(move(command))));
on_complete(move(results));
}
void URLProvider::query(String const& query, Function<void(NonnullRefPtrVector<Result>)> on_complete)
{
if (query.is_empty() || query.starts_with('=') || query.starts_with('$'))
return;
URL url = URL(query);
if (url.scheme().is_empty())
url.set_scheme("http");
if (url.host().is_empty())
url.set_host(query);
if (url.paths().is_empty())
url.set_paths({ "" });
if (!url.is_valid())
return;
NonnullRefPtrVector<Result> results;
results.append(adopt_ref(*new URLResult(url)));
on_complete(results);
}
}
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