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// file : brep/package-search.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <brep/package-search>
#include <string>
#include <memory> // make_shared()
#include <cstddef> // size_t
#include <xml/serializer>
#include <odb/database.hxx>
#include <odb/transaction.hxx>
#include <web/xhtml>
#include <web/module>
#include <web/mime-url-encoding>
#include <brep/page>
#include <brep/options>
#include <brep/package>
#include <brep/package-odb>
#include <brep/shared-database>
using namespace std;
using namespace cli;
using namespace odb::core;
namespace brep
{
void package_search::
init (scanner& s)
{
MODULE_DIAG;
options_ = make_shared<options::package_search> (
s, unknown_mode::fail, unknown_mode::fail);
db_ = shared_database (options_->db_host (), options_->db_port ());
}
template <typename T>
static inline query<T>
search_param (const string& q)
{
using query = query<T>;
return "(" +
(q.empty ()
? query ("NULL")
: "plainto_tsquery (" + query::_val (q) + ")") +
")";
}
void package_search::
handle (request& rq, response& rs)
{
using namespace xml;
using namespace web;
using namespace web::xhtml;
MODULE_DIAG;
params::package_search pr;
try
{
param_scanner s (rq.parameters ());
pr = params::package_search (s, unknown_mode::fail, unknown_mode::fail);
}
catch (const unknown_argument& e)
{
throw invalid_request (400, e.what ());
}
// @@ Would be nice to have a manipulator indenting string properly
// according to the most nested element identation.
//
const char* ident ("\n ");
const char* title ("Package Search");
serializer s (rs.content (), title);
s << HTML
<< HEAD
<< TITLE << title << ~TITLE
<< CSS_STYLE << ident
<< A_STYLE () << ident
<< DIV_PAGER_STYLE () << ident
<< "#packages {font-size: x-large;}" << ident
<< ".package {margin: 0.5em 0 0;}" << ident
<< ".name {font-size: x-large;}" << ident
<< ".tags {margin: 0.3em 0 0;}" << ident
<< "form {margin: 0.5em 0 0 0;}"
<< ~CSS_STYLE
<< ~HEAD
<< BODY;
const string& sq (pr.query ()); // Search query.
string qp (sq.empty () ? "" : "q=" + mime_url_encode (sq));
size_t rop (options_->results_on_page ());
transaction t (db_->begin ());
size_t pc (
db_->query_value<latest_package_count> (
search_param<latest_package_count> (sq)));
s << DIV(ID="packages") << "Packages (" << pc << ")" << ~DIV
<< FORM_SEARCH (sq);
auto r (
db_->query<latest_package_search_rank> (
search_param<latest_package_search_rank> (sq) +
"ORDER BY rank DESC, name" +
"OFFSET" + to_string (pr.page () * rop) +
"LIMIT" + to_string (rop)));
for (const auto& pr: r)
{
shared_ptr<package> p (db_->load<package> (pr.id));
s << DIV(CLASS="package")
<< DIV(CLASS="name")
<< A
<< HREF << "/go/" << mime_url_encode (p->id.name);
// Propagate search criteria to the package version search url.
//
if (!qp.empty ())
s << "?" << qp;
s << ~HREF
<< p->id.name
<< ~A
<< ~DIV
<< DIV(CLASS="summary") << p->summary << ~DIV
<< DIV_TAGS (p->tags)
<< DIV_LICENSES (p->license_alternatives)
<< DIV(CLASS="dependencies")
<< "Dependencies: " << p->dependencies.size ()
<< ~DIV
<< ~DIV;
}
t.commit ();
string u (qp.empty () ? "/" : ("/?" + qp));
s << DIV_PAGER (pr.page (), pc, rop, options_->pages_in_pager (), u)
<< ~BODY
<< ~HTML;
}
}
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