# Necessary imports. Provides library functions to ease writing tests.
from lib import prebuild, testcase, SUBMITTY_INSTALL_DIR

import subprocess
import os
import glob
import shutil
import traceback

############################################################################
# COPY THE ASSIGNMENT FROM THE SAMPLE ASSIGNMENTS DIRECTORIES

SAMPLE_ASSIGNMENT_CONFIG = SUBMITTY_INSTALL_DIR + "/more_autograding_examples/cpp_buggy_custom/config"
SAMPLE_SUBMISSIONS       = SUBMITTY_INSTALL_DIR + "/more_autograding_examples/cpp_buggy_custom/submissions"

@prebuild
def initialize(test):
    try:
        os.mkdir(os.path.join(test.testcase_path, "assignment_config"))
    except OSError:
        pass
    try:
        data_path = os.path.join(test.testcase_path, "data")
        if os.path.isdir(data_path):
            shutil.rmtree(data_path)
        os.mkdir(data_path)
    except OSError:
        pass
    try:
        os.mkdir(os.path.join(test.testcase_path, "build"))
    except OSError:
        pass
    try:
        os.mkdir(os.path.join(test.testcase_path, "build/custom_validation_code"))
    except OSError:
        pass
    subprocess.call(["cp",
                     os.path.join(SAMPLE_ASSIGNMENT_CONFIG, "config.json"),
                     os.path.join(test.testcase_path, "assignment_config")])
    subprocess.call(["cp",
                     os.path.join(SAMPLE_ASSIGNMENT_CONFIG, "instructor_CMakeLists.txt"),
                     os.path.join(test.testcase_path, "build")])
    subprocess.call(["cp",
                     os.path.join(SAMPLE_ASSIGNMENT_CONFIG, "custom_validation_code", "grader.cpp"),
                     os.path.join(test.testcase_path, "build/custom_validation_code")])


############################################################################

def cleanup(test):
    subprocess.call(["rm"] + ["-rf"] +
                    glob.glob(os.path.join(test.testcase_path, "data", "test*")))
    subprocess.call(["rm"] + ["-f"] +
                    glob.glob(os.path.join(test.testcase_path, "data", "results*")))

@testcase
def schema_validation(test):
    cleanup(test)
    config_path = os.path.join(test.testcase_path, 'assignment_config', 'complete_config.json')
    try:
        test.validate_complete_config(config_path)
    except Exception:
        traceback.print_exc()
        raise

@testcase
def correct(test):
    cleanup(test)
    subprocess.call(["rm"] + ["-f"] +
                    glob.glob(os.path.join(test.testcase_path, "data/", "*.cpp")))
    subprocess.call(["cp",
                     os.path.join(SAMPLE_SUBMISSIONS, "correct.cpp"),
                     os.path.join(test.testcase_path, "data/")])
    test.run_compile()
    test.run_run()
    test.run_validator()
    test.diff("grade.txt","grade.txt_correct","-b")
    test.json_diff("results.json","results.json_correct")


