From 9fa3cb4544f73baaf7028261ff9c21b978972de7 Mon Sep 17 00:00:00 2001
From: Stephan Hadinger <stephan.hadinger@gmail.com>
Date: Wed, 15 Sep 2021 22:25:36 +0200
Subject: [PATCH] Berry add `path.last_modified()`

---
 lib/libesp32/Berry/default/be_path_tasmota_lib.c | 16 ++++++++++++++++
 lib/libesp32/Berry/default/be_port.cpp           | 11 +++++++++++
 lib/libesp32/Berry/generate/be_const_strtab.h    |  1 +
 .../Berry/generate/be_const_strtab_def.h         |  5 +++--
 .../Berry/generate/be_fixed_tasmota_path.h       |  3 ++-
 5 files changed, 33 insertions(+), 3 deletions(-)

diff --git a/lib/libesp32/Berry/default/be_path_tasmota_lib.c b/lib/libesp32/Berry/default/be_path_tasmota_lib.c
index 810a8e712..c722f01e1 100644
--- a/lib/libesp32/Berry/default/be_path_tasmota_lib.c
+++ b/lib/libesp32/Berry/default/be_path_tasmota_lib.c
@@ -16,6 +16,7 @@
 #include "be_strlib.h"
 #include "be_mem.h"
 #include "be_sys.h"
+#include <time.h>
 
 static int m_path_exists(bvm *vm)
 {
@@ -26,10 +27,25 @@ static int m_path_exists(bvm *vm)
     be_pushbool(vm, be_isexist(path));
     be_return(vm);
 }
+extern time_t be_last_modified(void *hfile);
+
+static int m_path_last_modified(bvm *vm)
+{
+    if (be_top(vm) >= 1 && be_isstring(vm, 1)) {
+        const char *path = be_tostring(vm, 1);
+        void * f = be_fopen(path, "r");
+        if (f) {
+            be_pushint(vm, be_last_modified(f));
+            be_return(vm);
+        }
+    }
+    be_return_nil(vm);
+}
 
 /* @const_object_info_begin
 module path (scope: global, file: tasmota_path) {
     exists, func(m_path_exists)
+    last_modified, func(m_path_last_modified)
 }
 @const_object_info_end */
 #include "../generate/be_fixed_tasmota_path.h"
diff --git a/lib/libesp32/Berry/default/be_port.cpp b/lib/libesp32/Berry/default/be_port.cpp
index cca5b3f61..88815a000 100644
--- a/lib/libesp32/Berry/default/be_port.cpp
+++ b/lib/libesp32/Berry/default/be_port.cpp
@@ -248,6 +248,17 @@ size_t be_fsize(void *hfile)
     return 0;
 }
 
+extern "C" time_t be_last_modified(void *hfile)
+{
+#ifdef USE_UFILESYS
+    if (ufsp != nullptr && hfile != nullptr) {
+        File * f_ptr = (File*) hfile;
+        return f_ptr->getLastWrite();
+    }
+#endif // USE_UFILESYS
+    return 0;
+}
+
 int be_isexist(const char *filename)
 {
 #ifdef USE_UFILESYS
diff --git a/lib/libesp32/Berry/generate/be_const_strtab.h b/lib/libesp32/Berry/generate/be_const_strtab.h
index c8862b6bd..e91b8a6ce 100644
--- a/lib/libesp32/Berry/generate/be_const_strtab.h
+++ b/lib/libesp32/Berry/generate/be_const_strtab.h
@@ -1,6 +1,7 @@
 extern const bcstring be_const_str_PZEM0XX_TX;
 extern const bcstring be_const_str__begin_transmission;
 extern const bcstring be_const_str_MHZ_TXD;
+extern const bcstring be_const_str_last_modified;
 extern const bcstring be_const_str_list;
 extern const bcstring be_const_str_lv_draw_mask_line_param_cfg;
 extern const bcstring be_const_str_screenshot;
diff --git a/lib/libesp32/Berry/generate/be_const_strtab_def.h b/lib/libesp32/Berry/generate/be_const_strtab_def.h
index d8614a757..b6a50513e 100644
--- a/lib/libesp32/Berry/generate/be_const_strtab_def.h
+++ b/lib/libesp32/Berry/generate/be_const_strtab_def.h
@@ -1,6 +1,7 @@
 be_define_const_str(PZEM0XX_TX, "PZEM0XX_TX", 944775704u, 0, 10, &be_const_str__begin_transmission);
 be_define_const_str(_begin_transmission, "_begin_transmission", 2779461176u, 0, 19, NULL);
-be_define_const_str(MHZ_TXD, "MHZ_TXD", 3310158233u, 0, 7, &be_const_str_list);
+be_define_const_str(MHZ_TXD, "MHZ_TXD", 3310158233u, 0, 7, &be_const_str_last_modified);
+be_define_const_str(last_modified, "last_modified", 772177145u, 0, 13, &be_const_str_list);
 be_define_const_str(list, "list", 217798785u, 0, 4, &be_const_str_lv_draw_mask_line_param_cfg);
 be_define_const_str(lv_draw_mask_line_param_cfg, "lv_draw_mask_line_param_cfg", 2154874825u, 0, 27, &be_const_str_screenshot);
 be_define_const_str(screenshot, "screenshot", 3894592561u, 0, 10, NULL);
@@ -1058,6 +1059,6 @@ static const bstring* const m_string_table[] = {
 
 static const struct bconststrtab m_const_string_table = {
     .size = 344,
-    .count = 688,
+    .count = 689,
     .table = m_string_table
 };
diff --git a/lib/libesp32/Berry/generate/be_fixed_tasmota_path.h b/lib/libesp32/Berry/generate/be_fixed_tasmota_path.h
index 92e49ecf9..7ff9e3d66 100644
--- a/lib/libesp32/Berry/generate/be_fixed_tasmota_path.h
+++ b/lib/libesp32/Berry/generate/be_fixed_tasmota_path.h
@@ -2,11 +2,12 @@
 
 static be_define_const_map_slots(m_libpath_map) {
     { be_const_key(exists, -1), be_const_func(m_path_exists) },
+    { be_const_key(last_modified, 0), be_const_func(m_path_last_modified) },
 };
 
 static be_define_const_map(
     m_libpath_map,
-    1
+    2
 );
 
 static be_define_const_module(