From 4fd89ecfadca404149117ef237be47821e82e752 Mon Sep 17 00:00:00 2001
From: Alexis Fourmaux <fourmaux.alexis.perso@ungol.fr>
Date: Sat, 30 May 2026 17:00:44 +0200
Subject: [PATCH] =?UTF-8?q?add:=20ajoute=20la=20biblioth=C3=A8que=20SimuGa?=
 =?UTF-8?q?z=20qui=20g=C3=A9n=C3=A8re=20des=20donn=C3=A9es?=
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---
 lib/SimuGaz/SimuGaz.cpp | 70 +++++++++++++++++++++++++++++++++++++++++
 lib/SimuGaz/SimuGaz.h   |  7 +++++
 2 files changed, 77 insertions(+)
 create mode 100644 lib/SimuGaz/SimuGaz.cpp
 create mode 100644 lib/SimuGaz/SimuGaz.h

diff --git a/lib/SimuGaz/SimuGaz.cpp b/lib/SimuGaz/SimuGaz.cpp
new file mode 100644
index 0000000..36e698f
--- /dev/null
+++ b/lib/SimuGaz/SimuGaz.cpp
@@ -0,0 +1,70 @@
+#include <SimuGaz.h>
+#include <Preferences.h>
+
+#define INITIAL_CONSUMPTION 1594.87f
+#define INITIAL_SECONDS 11462400  // date initiale = 13/05/2026 16:00
+#define AVERAGE_DAILY_CONSUMPTION 2.66f
+
+// Source : opendata.grdf.fr/explore/dataset/correction_climatique_grdf/
+// Profil résidentiel chauffage (P011), moyenne 2019-2023, normalisée sur 12 mois
+static const float GRDF_MONTHLY_COEFF[12] = {
+    2.21f, // Janvier
+    2.05f, // Février
+    1.62f, // Mars
+    0.97f, // Avril
+    0.55f, // Mai
+    0.22f, // Juin
+    0.15f, // Juillet
+    0.17f, // Août
+    0.38f, // Septembre
+    0.85f, // Octobre
+    1.52f, // Novembre
+    2.11f, // Décembre
+};
+
+Preferences prefs;
+
+// Base annuelle : 972 m³/an pour 100m² (CRE)
+// - base mensuelle moyenne = 81 m³/mois
+// - base journalière moyenne = 2.66 m³/j
+
+float consumptionM3;
+uint32_t totalSeconds;
+
+void get_stored_values(){
+    prefs.begin("simugaz");
+    consumptionM3 = prefs.getFloat("consumption_m3", INITIAL_CONSUMPTION);
+    totalSeconds = prefs.getUInt("seconds", INITIAL_SECONDS);
+    prefs.end();
+}
+
+void store_values(){
+    prefs.begin("simugaz");
+    prefs.putFloat("consumption_m3", consumptionM3);
+    prefs.putUInt("seconds", totalSeconds);
+    prefs.end();
+}
+
+uint32_t simulateGasPulses(uint32_t intervalSeconds)
+{
+    get_stored_values();
+    totalSeconds += intervalSeconds;
+
+    uint32_t month = (totalSeconds / (86400UL * 30UL)) % 12;
+
+    float dailyBase = AVERAGE_DAILY_CONSUMPTION * GRDF_MONTHLY_COEFF[month];
+
+    // Variabilité journalière ±15%
+    float dailyVariation = 1.0f + 0.30f * ((float)(esp_random() % 1000) / 1000.0f - 0.5f);
+    
+    // Résolution compteur Gazpar : 0.010 m³ par impulsion
+    float incrementM3 = dailyBase * intervalSeconds / 86400.0f * dailyVariation;
+    consumptionM3 += incrementM3;
+    uint32_t pulseCount = (uint32_t)(consumptionM3 / 0.010f);
+    uint32_t incrementPulses = (uint32_t)(incrementM3 / 0.010f);
+    
+    store_values();
+    
+    Serial.printf("[GAZ] Incrément de %lu impulsions - Total : %lu impulsions (%.3f m³)\n", incrementPulses, pulseCount, pulseCount * 0.010f);
+    return pulseCount;
+}
\ No newline at end of file
diff --git a/lib/SimuGaz/SimuGaz.h b/lib/SimuGaz/SimuGaz.h
new file mode 100644
index 0000000..a7ca631
--- /dev/null
+++ b/lib/SimuGaz/SimuGaz.h
@@ -0,0 +1,7 @@
+#pragma once
+
+#include <Arduino.h>
+
+uint32_t simulateGasPulses(uint32_t intervalSeconds = 86400);
+void get_stored_values();
+void store_values();
\ No newline at end of file