# Auto-generated by ibm_db setup.py
# Registers clidriver DLL directory for Python 3.8+ on Windows.
# This module is imported at startup via ibm_db_dll.pth.
import os, sys, site, sysconfig

if sys.platform == "win32" and hasattr(os, "add_dll_directory"):
    candidates = []

    # 1. IBM_DB_HOME environment variable (highest priority)
    ibm_home = os.environ.get("IBM_DB_HOME")
    if ibm_home:
        candidates.append(os.path.join(ibm_home.strip('"'), "bin"))
    else:
        # 2. User site-packages/clidriver (pip install --user)
        try:
            usp = site.getusersitepackages()
            if usp:
                candidates.append(os.path.join(usp, "clidriver", "bin"))
        except Exception:
            pass

        # 3. System site-packages/clidriver (standard pip install)
        candidates.append(
            os.path.join(sysconfig.get_path("purelib"), "clidriver", "bin")
        )

        # 4. PATH entries that look like DB2/clidriver installs
        for d in os.environ.get("PATH", "").split(";"):
            if d and os.path.basename(d).lower() == "bin":
                if (os.path.isfile(os.path.join(d, "db2cli.exe")) or
                        os.path.isdir(os.path.join(os.path.dirname(d), "license"))):
                    candidates.append(d)

    # Register the first valid DLL directory
    for p in candidates:
        if p and os.path.isdir(p):
            os.add_dll_directory(p)
            break