# import os
# import sys

# QGIS_APP = "/Applications/QGIS-LTR.app/Contents"
# QGIS_PREFIX = f"{QGIS_APP}/Resources"

# # ==== FIX VERY IMPORTANT ====
# os.environ["QGIS_PREFIX_PATH"] = QGIS_PREFIX
# os.environ["PROJ_LIB"] = f"{QGIS_PREFIX}/proj" 
# os.environ["GDAL_DATA"] = f"{QGIS_PREFIX}/gdal"
# os.environ["QT_PLUGIN_PATH"] = f"{QGIS_PREFIX}/plugins"
# # =============================

# os.environ["QT_QPA_PLATFORM"] = "offscreen"

# # Python path
# sys.path.append(f"{QGIS_PREFIX}/python")
# sys.path.append(f"{QGIS_PREFIX}/python/plugins")

# from qgis.core import QgsApplication
# from qgis.analysis import QgsNativeAlgorithms

# import processing
# from processing.core.Processing import Processing

# def start_qgis():
#     qgs = QgsApplication([], False)
#     qgs.initQgis()

#     # === WAJIB: initialize processing ===
#     Processing.initialize()
#     qgs.processingRegistry().addProvider(QgsNativeAlgorithms())

#     return qgs








import os
import sys

# ==== Linux QGIS installation prefix ====
QGIS_PREFIX = "/usr"

# QGIS Environment
os.environ["QGIS_PREFIX_PATH"] = QGIS_PREFIX
os.environ["QGIS_HOME"] = QGIS_PREFIX

# GDAL + PROJ
os.environ["PROJ_LIB"] = "/usr/share/proj"
os.environ["GDAL_DATA"] = "/usr/share/gdal"

# QT plugin path (Umum untuk Ubuntu/Debian)
os.environ["QT_PLUGIN_PATH"] = "/usr/lib/x86_64-linux-gnu/qt5/plugins"

# Put QGIS bin into PATH
os.environ["PATH"] = "/usr/bin:" + os.environ.get("PATH", "")

# Python paths
sys.path.append("/usr/lib/python3/dist-packages")
sys.path.append("/usr/lib/python3/dist-packages/qgis")
sys.path.append("/usr/lib/python3/dist-packages/qgis/plugins")
sys.path.append("/usr/lib/qgis")
sys.path.append("/usr/lib/qgis/plugins")

# Optional but recommended on headless servers
sys.path.append("/usr/lib/python3/dist-packages/PyQt5")

# QGIS imports
from qgis.core import QgsApplication
from qgis.analysis import QgsNativeAlgorithms

import processing
from processing.core.Processing import Processing


def start_qgis():
    qgs = QgsApplication([], False)
    qgs.initQgis()

    Processing.initialize()
    qgs.processingRegistry().addProvider(QgsNativeAlgorithms())

    return qgs