From 0bd765064bb7e46a7d2d42c3d2d6e39d555ed3e5 Mon Sep 17 00:00:00 2001
From: ghost <noreply@localhost>
Date: Mon, 1 May 2023 20:09:28 +0300
Subject: [PATCH] implement extended search mode support #9

---
 README.md          | 15 ++++++++++++---
 library/filter.php |  6 ++++--
 public/api.php     |  7 ++++---
 public/search.php  |  5 +++--
 4 files changed, 23 insertions(+), 10 deletions(-)

diff --git a/README.md b/README.md
index a0322dd..1da6253 100644
--- a/README.md
+++ b/README.md
@@ -63,6 +63,7 @@ Could be enabled or disabled by `API_SEARCH_ENABLED` option
 GET action=search  - required
 GET query={string} - optional, search request, empty if not provided
 GET page={int}     - optional, search results page, 1 if not provided
+GET mode=SphinxQL  - optional, enable extended SphinxQL syntax
 ```
 
 ##### Hosts distribution
@@ -91,9 +92,7 @@ GET action=manifest - required
 
 #### Search textual filtering
 
-https://sphinxsearch.com/docs/current.html#extended-syntax
-
-##### Supported constructions
+##### Default constructions
 
 ```
 operator OR:
@@ -126,6 +125,16 @@ boosted^1.234 boostedfieldend$^1.234
 
 ```
 
+##### Extended syntax
+
+https://sphinxsearch.com/docs/current.html#extended-syntax
+
+Could be enabled with following attributes
+
+```
+GET m=SphinxQL
+```
+
 #### Roadmap / ideas
 
 * [x] Web pages full text ranking search
diff --git a/library/filter.php b/library/filter.php
index 897eff1..275b7b2 100644
--- a/library/filter.php
+++ b/library/filter.php
@@ -55,9 +55,11 @@ class Filter {
     return $data;
   }
 
-  static public function sphinxSearchQuery(string $query) {
+  static public function searchQuery(string $query, string $mode = 'default') {
 
-    $query = str_replace(['\\', '/', '~', '@', '!', '"', '(', ')'], ['\\\\', '\/', '\~', '\@', '\!', '\"', '\(', '\)'], $query);
+    if ($mode == 'default') {
+        $query = str_replace(['\\', '/', '~', '@', '!', '"', '(', ')'], ['\\\\', '\/', '\~', '\@', '\!', '\"', '\(', '\)'], $query);
+    }
 
     $query = trim($query);
 
diff --git a/public/api.php b/public/api.php
index 11c6548..6f0ef74 100644
--- a/public/api.php
+++ b/public/api.php
@@ -30,12 +30,13 @@ if (API_ENABLED) {
 
 
         // Filter request data
+        $mode  = !empty($_GET['mode']) ? Filter::url($_GET['mode']) : 'default';
         $query = !empty($_GET['query']) ? Filter::url($_GET['query']) : '';
-        $page  = !empty($_GET['page']) ? Filter::url($_GET['page']) : 1;
+        $page  = !empty($_GET['page']) ? (int) $_GET['page'] : 1;
 
         // Make search request
-        $sphinxResultsTotal = $sphinx->searchHostPagesTotal(Filter::sphinxSearchQuery($query));
-        $sphinxResults      = $sphinx->searchHostPages(Filter::sphinxSearchQuery($query), $page * API_SEARCH_PAGINATION_RESULTS_LIMIT - API_SEARCH_PAGINATION_RESULTS_LIMIT, API_SEARCH_PAGINATION_RESULTS_LIMIT, $sphinxResultsTotal);
+        $sphinxResultsTotal = $sphinx->searchHostPagesTotal(Filter::searchQuery($query, $mode));
+        $sphinxResults      = $sphinx->searchHostPages(Filter::searchQuery($query, $mode), $page * API_SEARCH_PAGINATION_RESULTS_LIMIT - API_SEARCH_PAGINATION_RESULTS_LIMIT, API_SEARCH_PAGINATION_RESULTS_LIMIT, $sphinxResultsTotal);
 
         // Generate results
         $dbResults = [];
diff --git a/public/search.php b/public/search.php
index dbf1f45..2c20bad 100644
--- a/public/search.php
+++ b/public/search.php
@@ -24,6 +24,7 @@ $placeholder = Filter::plural($totalPages, [sprintf(_('Over %s page or enter the
                                             ]);
 
 // Filter request data
+$m = !empty($_GET['m']) ? Filter::url($_GET['m']) : 'default';
 $q = !empty($_GET['q']) ? Filter::url($_GET['q']) : '';
 $p = !empty($_GET['p']) ? (int) $_GET['p'] : 1;
 
@@ -106,8 +107,8 @@ if (filter_var($q, FILTER_VALIDATE_URL) && preg_match(CRAWL_URL_REGEXP, $q)) {
 // Search request
 if (!empty($q)) {
 
-  $resultsTotal = $sphinx->searchHostPagesTotal(Filter::sphinxSearchQuery($q));
-  $results      = $sphinx->searchHostPages(Filter::sphinxSearchQuery($q), $p * WEBSITE_PAGINATION_SEARCH_RESULTS_LIMIT - WEBSITE_PAGINATION_SEARCH_RESULTS_LIMIT, WEBSITE_PAGINATION_SEARCH_RESULTS_LIMIT, $resultsTotal);
+  $resultsTotal = $sphinx->searchHostPagesTotal(Filter::searchQuery($q, $m));
+  $results      = $sphinx->searchHostPages(Filter::searchQuery($q, $m), $p * WEBSITE_PAGINATION_SEARCH_RESULTS_LIMIT - WEBSITE_PAGINATION_SEARCH_RESULTS_LIMIT, WEBSITE_PAGINATION_SEARCH_RESULTS_LIMIT, $resultsTotal);
 
 } else {