From e544eb2ed52e679767e1691370bdd86e45e6d1f2 Mon Sep 17 00:00:00 2001
From: guille <Guillermo.GutierrezMorote@concordia.ca>
Date: Wed, 22 Nov 2023 08:51:53 +0100
Subject: [PATCH] initial implementation of trnsys exporter

---
 hub/exports/building_energy/trnsys.py         | 63 +++++++++++++++++++
 .../energy_building_exports_factory.py        | 12 ++++
 2 files changed, 75 insertions(+)
 create mode 100644 hub/exports/building_energy/trnsys.py

diff --git a/hub/exports/building_energy/trnsys.py b/hub/exports/building_energy/trnsys.py
new file mode 100644
index 00000000..7dbe3325
--- /dev/null
+++ b/hub/exports/building_energy/trnsys.py
@@ -0,0 +1,63 @@
+"""
+export a city into B18 (TRNSYS 18) format
+SPDX - License - Identifier: LGPL - 3.0 - or -later
+Copyright © 2022 Concordia CERC group
+Project Coder Guille Gutierrez guillermo.gutierrezmorote@concordia.ca
+"""
+
+from pathlib import Path
+
+
+class Trnsys:
+  """
+  TRNSYS class
+  """
+
+  def __init__(self, city, path, target_buildings=None):
+    self._city = city
+    self._path = path
+    self._buildings = self._city.buildings
+    if target_buildings is not None:
+      buildings = []
+      for building in target_buildings:
+        buildings.append(self._city.city_object(building))
+      self._buildings = buildings
+
+  def _building_information(self, f, building):
+    f.write('[Building Information]\n')
+    f.write(f'Name: {building.name}\n')
+    f.write(f'Location: {self._city.location.city}, {self._city.location.country}\n')
+    f.write(f'Total Floors: {building.storeys_above_ground}\n')
+    f.write(f'Year Build: {building.year_of_construction}\n')
+
+  @staticmethod
+  def _geometry_information(f, building):
+    f.write('[Geometry]\n')
+    f.write(f'Length: {building.upper_corner[0] - building.lower_corner[0]}\n')
+    f.write(f'Width: {building.upper_corner[1] - building.lower_corner[1]}\n')
+    f.write(f'Height: {building.upper_corner[2] - building.lower_corner[2]}\n')
+
+  @staticmethod
+  def _wall_construction(f, building):
+    basic_thermal_boundary = building.walls[0].associated_thermal_boundaries[0]
+
+    f.write('[Wall Construction]\n')
+    f.write(f'Wall Type: Multi-Layered Wall\n')
+    f.write(f'Layers: {len(basic_thermal_boundary.layers)}')
+    f.write(f'Height: {building.upper_corner[2] - building.lower_corner[2]}\n')
+
+  @staticmethod
+  def _wall_information(f, building):
+    f.write('[Wall Section]\n')
+    f.write(f'Material: {building.upper_corner[0] - building.lower_corner[0]}\n')
+    f.write(f'Width: {building.upper_corner[1] - building.lower_corner[1]}\n')
+    f.write(f'Height: {building.upper_corner[2] - building.lower_corner[2]}\n')
+
+  def export(self):
+    for building in self._buildings:
+      path = Path(self._path / f'{building.name}.b18')
+      with open(path, 'w', encoding='utf-8') as f:
+        self._building_information(f, building)
+        Trnsys._geometry_information(f, building)
+        Trnsys._wall_information(f, building)
+
diff --git a/hub/exports/energy_building_exports_factory.py b/hub/exports/energy_building_exports_factory.py
index 952e4a12..abbb9de1 100644
--- a/hub/exports/energy_building_exports_factory.py
+++ b/hub/exports/energy_building_exports_factory.py
@@ -12,6 +12,7 @@ import requests
 from hub.exports.building_energy.energy_ade import EnergyAde
 from hub.exports.building_energy.idf import Idf
 from hub.exports.building_energy.insel.insel_monthly_energy_balance import InselMonthlyEnergyBalance
+from hub.exports.building_energy.trnsys import Trnsys
 from hub.helpers.utils import validate_import_export_type
 from hub.imports.weather.helpers.weather import Weather as wh
 
@@ -60,6 +61,17 @@ class EnergyBuildingsExportsFactory:
     return Idf(self._city, self._path, (idf_data_path / 'Minimal.idf'), (idf_data_path / 'Energy+.idd'), weather_path,
                target_buildings=self._target_buildings)
 
+  @property
+  def _trnsys(self):
+    """
+    Export the city to TRNSYS 18 format
+
+    Currently only b18 files will be generated
+
+    :return: None
+    """
+    return Trnsys(self._city, self._path, target_buildings=self._target_buildings)
+
   @property
   def _insel_monthly_energy_balance(self):
     """