"""
sn_basis/test/run_tests.py

Zentraler Test-Runner für sn_basis.
Wrapper-konform, QGIS-unabhängig, CI- und IDE-fähig.
"""

import unittest
import datetime
import inspect
import os
import sys

from pathlib import Path

# ---------------------------------------------------------
# Pre-Bootstrap: Plugin-Root in sys.path eintragen
# ---------------------------------------------------------

THIS_FILE = Path(__file__).resolve()
PLUGIN_ROOT = THIS_FILE.parents[2]

if str(PLUGIN_ROOT) not in sys.path:
    sys.path.insert(0, str(PLUGIN_ROOT))

from sn_basis.functions import (
    get_plugin_root,
    add_to_sys_path,
)

# ---------------------------------------------------------
# Bootstrap: Plugin-Root in sys.path eintragen
# ---------------------------------------------------------

def bootstrap():
    """
    Simuliert das QGIS-Plugin-Startverhalten:
    stellt sicher, dass sn_basis importierbar ist.
    """
    plugin_root = get_plugin_root()
    add_to_sys_path(plugin_root)


bootstrap()

# ---------------------------------------------------------
# Farben
# ---------------------------------------------------------

RED = "\033[91m"
YELLOW = "\033[93m"
GREEN = "\033[92m"
CYAN = "\033[96m"
MAGENTA = "\033[95m"
RESET = "\033[0m"

GLOBAL_TEST_COUNTER = 0

# ---------------------------------------------------------
# Farbige TestResult-Klasse
# ---------------------------------------------------------

class ColoredTestResult(unittest.TextTestResult):
    
    _last_test_class: type | None = None


    def startTest(self, test):
        global GLOBAL_TEST_COUNTER
        GLOBAL_TEST_COUNTER += 1
        self.stream.write(f"{CYAN}[Test {GLOBAL_TEST_COUNTER}]{RESET}\n")
        super().startTest(test)

    def startTestClass(self, test):
        cls = test.__class__
        file = inspect.getfile(cls)
        filename = os.path.basename(file)

        self.stream.write(
            f"\n{MAGENTA}{'=' * 70}\n"
            f"Starte Testklasse: {filename} → {cls.__name__}\n"
            f"{'=' * 70}{RESET}\n"
        )

    def addError(self, test, err):
        super().addError(test, err)
        self.stream.write(f"{RED}ERROR{RESET}\n")

    def addFailure(self, test, err):
        super().addFailure(test, err)
        self.stream.write(f"{RED}FAILURE{RESET}\n")

    def addSkip(self, test, reason):
        super().addSkip(test, reason)
        self.stream.write(f"{YELLOW}SKIPPED{RESET}: {reason}\n")

    def addSuccess(self, test):
        super().addSuccess(test)
        self.stream.write(f"{GREEN}OK{RESET}\n")

# ---------------------------------------------------------
# Farbiger TestRunner
# ---------------------------------------------------------

class ColoredTestRunner(unittest.TextTestRunner):

    def _makeResult(self):
        result = ColoredTestResult(
            self.stream,
            self.descriptions,
            self.verbosity,
        )

        original_start_test = result.startTest

        def patched_start_test(test):
            if not hasattr(result, "_last_test_class") or \
               result._last_test_class != test.__class__:
                result.startTestClass(test)
                result._last_test_class = test.__class__
            original_start_test(test)

        result.startTest = patched_start_test
        return result


# ---------------------------------------------------------
# Testlauf starten
# ---------------------------------------------------------

def main():
    print("\n" + "=" * 70)
    print(
        f"{CYAN}Testlauf gestartet am: "
        f"{datetime.datetime.now():%Y-%m-%d %H:%M:%S}{RESET}"
    )
    print("=" * 70 + "\n")

    loader = unittest.TestLoader()

    suite = loader.discover(
        start_dir=os.path.dirname(__file__),
        pattern="test_*.py"
    )

    runner = ColoredTestRunner(verbosity=2)
    result = runner.run(suite)

    # Exit-Code für CI / Skripte
    return 0 if result.wasSuccessful() else 1


if __name__ == "__main__":
    raise SystemExit(main())