From ed02747ebc1d5808d13d7010d20116a758fd1447 Mon Sep 17 00:00:00 2001
From: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
Date: Mon, 15 Apr 2024 12:02:19 +1200
Subject: [PATCH] Fix project version longer than 30 characters breaking
 compilation (#6535)

---
 esphome/core/base_automation.h | 2 +-
 esphome/core/config.py         | 1 +
 esphome/core/defines.h         | 1 +
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/esphome/core/base_automation.h b/esphome/core/base_automation.h
index b0ae0aff84..1bf0efb9a4 100644
--- a/esphome/core/base_automation.h
+++ b/esphome/core/base_automation.h
@@ -134,7 +134,7 @@ class ProjectUpdateTrigger : public Trigger<std::string>, public Component {
     uint32_t hash = fnv1_hash(ESPHOME_PROJECT_NAME);
     ESPPreferenceObject pref = global_preferences->make_preference<char[30]>(hash, true);
     char previous_version[30];
-    char current_version[30] = ESPHOME_PROJECT_VERSION;
+    char current_version[30] = ESPHOME_PROJECT_VERSION_30;
     if (pref.load(&previous_version)) {
       int cmp = strcmp(previous_version, current_version);
       if (cmp < 0) {
diff --git a/esphome/core/config.py b/esphome/core/config.py
index 792f9da6dd..2d87796987 100644
--- a/esphome/core/config.py
+++ b/esphome/core/config.py
@@ -394,6 +394,7 @@ async def to_code(config):
     if project_conf := config.get(CONF_PROJECT):
         cg.add_define("ESPHOME_PROJECT_NAME", project_conf[CONF_NAME])
         cg.add_define("ESPHOME_PROJECT_VERSION", project_conf[CONF_VERSION])
+        cg.add_define("ESPHOME_PROJECT_VERSION_30", project_conf[CONF_VERSION][:30])
         for conf in project_conf.get(CONF_ON_UPDATE, []):
             trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID])
             await cg.register_component(trigger, conf)
diff --git a/esphome/core/defines.h b/esphome/core/defines.h
index 22153de5de..f13ae968f0 100644
--- a/esphome/core/defines.h
+++ b/esphome/core/defines.h
@@ -11,6 +11,7 @@
 #define ESPHOME_BOARD "dummy_board"
 #define ESPHOME_PROJECT_NAME "dummy project"
 #define ESPHOME_PROJECT_VERSION "v2"
+#define ESPHOME_PROJECT_VERSION_30 "v2"
 #define ESPHOME_VARIANT "ESP32"
 
 // Feature flags