From f041c1eae008210a92adabd142f4db91e35cf3c2 Mon Sep 17 00:00:00 2001
From: Petr Ohlidal <petr@ohlidal.cz>
Date: Sun, 22 Aug 2021 00:17:23 +0200
Subject: [PATCH] :bug: "Fresh" category restored to orig. formula: max 1 day
 since install.

Broken by eb91d9c9dc8701ace5ee11ba0fdba531a4654f69 - since then, freshness was evaluated based on file/ZIP last modified time.
The preceding logic was also somewhat complicated - I think the formula was "max 1 day since last cache update which added content", but I'm not sure.
Anyway, I restored it to match v0.4.0.7 (year 2013) - Let's gather new feedback.
---
 source/main/gui/panels/GUI_MainSelector.cpp | 22 ++--------------
 source/main/gui/panels/GUI_MainSelector.h   |  2 --
 source/main/resources/CacheSystem.cpp       | 29 +++++++--------------
 source/main/resources/CacheSystem.h         |  1 +
 4 files changed, 12 insertions(+), 42 deletions(-)

diff --git a/source/main/gui/panels/GUI_MainSelector.cpp b/source/main/gui/panels/GUI_MainSelector.cpp
index a4f54d3f0e..ec564def01 100644
--- a/source/main/gui/panels/GUI_MainSelector.cpp
+++ b/source/main/gui/panels/GUI_MainSelector.cpp
@@ -426,25 +426,12 @@ void MainSelector::UpdateDisplayLists()
     query.cqy_filter_guid = m_filter_guid;
 
     App::GetCacheSystem()->Query(query);
-    if (m_selected_cid == CacheCategoryId::CID_All)
-    {
-        m_cache_file_freshness = query.cqy_res_last_update;
-    }
 
     m_selected_entry = -1;
     for (CacheQueryResult const& res: query.cqy_results)
     {
-        const bool is_fresh = this->IsEntryFresh(res.cqr_entry);
-        if (is_fresh)
-        {
-            query.cqy_res_category_usage[CacheCategoryId::CID_Fresh]++;
-        }
-
-        if (m_selected_cid != CacheCategoryId::CID_Fresh || is_fresh)
-        {
-            m_display_entries.push_back(res.cqr_entry);
-            m_selected_entry = 0;
-        }
+        m_display_entries.push_back(res.cqr_entry);
+        m_selected_entry = 0;
     }
 
     // Sort categories alphabetically
@@ -463,11 +450,6 @@ void MainSelector::UpdateDisplayLists()
     }
 }
 
-bool MainSelector::IsEntryFresh(CacheEntry* entry)
-{
-    return entry->filetime >= m_cache_file_freshness - 86400;
-}
-
 void MainSelector::UpdateSearchParams()
 {
     std::string input = m_search_input.ToCStr();
diff --git a/source/main/gui/panels/GUI_MainSelector.h b/source/main/gui/panels/GUI_MainSelector.h
index 6eb5732697..555884d3a1 100644
--- a/source/main/gui/panels/GUI_MainSelector.h
+++ b/source/main/gui/panels/GUI_MainSelector.h
@@ -73,7 +73,6 @@ class MainSelector
     void UpdateSearchParams();
     void Apply();
     void Cancel();
-    bool IsEntryFresh(CacheEntry* entry);
     void DrawAttrInt(const char* desc, int val) const;
     void DrawAttrFloat(const char* desc, float val) const;
     void DrawAttrSpecial(bool val, const char* label) const;
@@ -85,7 +84,6 @@ class MainSelector
     LoaderType         m_loader_type = LT_None;
     DisplayCategoryVec m_display_categories;
     DisplayEntryVec    m_display_entries;
-    std::time_t        m_cache_file_freshness;
     CacheSearchMethod  m_search_method = CacheSearchMethod::NONE;
     std::string        m_search_string;
     std::string        m_filter_guid;                //!< Used for skins
diff --git a/source/main/resources/CacheSystem.cpp b/source/main/resources/CacheSystem.cpp
index da1bc3db37..c4c3c56bb8 100644
--- a/source/main/resources/CacheSystem.cpp
+++ b/source/main/resources/CacheSystem.cpp
@@ -1222,6 +1222,7 @@ std::shared_ptr<SkinDef> CacheSystem::FetchSkinDef(CacheEntry* cache_entry)
 size_t CacheSystem::Query(CacheQuery& query)
 {
     Ogre::StringUtil::toLowerCase(query.cqy_search_string);
+    std::time_t cur_time = std::time(nullptr);
     for (CacheEntry& entry: m_entries)
     {
         // Filter by GUID
@@ -1256,30 +1257,18 @@ size_t CacheSystem::Query(CacheQuery& query)
             continue;
         }
 
+        // Category usage stats
         query.cqy_res_category_usage[entry.categoryid]++;
-        query.cqy_res_category_usage[CacheCategoryId::CID_All]++;
-
-        // Filter by category
-        switch (query.cqy_filter_category_id)
-        {
-        case CacheCategoryId::CID_Max:
-        case CacheCategoryId::CID_Hidden:
-        case CacheCategoryId::CID_SearchResults:
-            add = false; // Invalid query - skip all.
-            break;
 
-        case CacheCategoryId::CID_All:
-        case CacheCategoryId::CID_Fresh:
-            add = true; // Accept all (freshness is filtered externally).
-            break;
+        query.cqy_res_category_usage[CacheCategoryId::CID_All]++;
 
-        case CacheCategoryId::CID_Unsorted:
-        default:
-            add = query.cqy_filter_category_id == entry.categoryid;
-            break;
-        }
+        const bool is_fresh = (cur_time - entry.addtimestamp) < CACHE_FILE_FRESHNESS;
+        if (is_fresh)
+            query.cqy_res_category_usage[CacheCategoryId::CID_Fresh]++;
 
-        if (!add)
+        // Filter by category
+        if ((query.cqy_filter_category_id <= CacheCategoryId::CID_Max && query.cqy_filter_category_id != entry.categoryid) ||
+            (query.cqy_filter_category_id == CID_Fresh && !is_fresh))
         {
             continue;
         }
diff --git a/source/main/resources/CacheSystem.h b/source/main/resources/CacheSystem.h
index 29ae36c3b1..30c7527e29 100644
--- a/source/main/resources/CacheSystem.h
+++ b/source/main/resources/CacheSystem.h
@@ -37,6 +37,7 @@
 
 #define CACHE_FILE "mods.cache"
 #define CACHE_FILE_FORMAT 11
+#define CACHE_FILE_FRESHNESS 86400 // 60*60*24 = one day
 
 namespace RoR {