#!/usr/bin/env python3

import os
import sys

import common
import lkmc.import_path
import path_properties
import thread_pool

class Main(common.TestCliFunction):
    def __init__(self, *args, **kwargs):
        if not 'description' in kwargs:
            kwargs['description'] = '''\
https://github.com/cirosantilli/linux-kernel-module-cheat#user-mode-tests
TODO: expose all userland relevant ./run args here as well somehow.
'''
        if not 'defaults' in kwargs:
            kwargs['defaults'] = {}
        super().__init__(*args, **kwargs)
        self.add_argument(
            'tests',
            nargs='*',
            help='''\
If given, run only the given tests. Otherwise, run all tests.
'''
        )

    def setup_one(self):
        self.env['tests'] = self.resolve_targets(
            self.env['userland_source_dir'],
            self.env['tests']
        )

    def timed_main(self):
        run_args = self.get_common_args()
        if self.env['emulator'] == 'gem5':
            run_args['userland_build_id'] = 'static'
        had_failure = False
        rootdir_abs_len = len(self.env['root_dir'])
        with thread_pool.ThreadPool(
            self.run_test,
            nthreads=self.env['nproc'],
            thread_id_arg='thread_id',
        ) as my_thread_pool:
            try:
                for test in self.env['tests']:
                    for path, in_dirnames, in_filenames in self.sh.walk(test):
                        path_abs = os.path.abspath(path)
                        dirpath_relative_root = path_abs[rootdir_abs_len + 1:]
                        for in_filename in in_filenames:
                            if os.path.splitext(in_filename)[1] in self.env['build_in_exts']:
                                path_relative_root = os.path.join(dirpath_relative_root, in_filename)
                                my_path_properties = path_properties.get(path_relative_root)
                                if my_path_properties.should_be_tested(self.env):
                                    cur_run_args = run_args.copy()
                                    cur_run_args.update({
                                        'userland': os.path.relpath(os.path.join(path_abs, in_filename), os.getcwd()),
                                    })
                                    cur_run_args.update(my_path_properties['test_run_args'])
                                    run_test_args = {
                                        'expected_exit_status': my_path_properties['exit_status'],
                                        'run_args': cur_run_args,
                                        'run_obj':  lkmc.import_path.import_path_main('run'),
                                        'test_id': path_relative_root,
                                    }
                                    if my_path_properties['receives_signal']:
                                        run_test_args['expected_exit_status'] = 128 - my_path_properties['exit_status']
                                    error = my_thread_pool.submit(run_test_args)
                                    if error is not None:
                                        if self.env['quit_on_fail']:
                                            raise common.ExitLoop()
            except common.ExitLoop:
                pass
        error = my_thread_pool.get_error()
        if error is not None:
            print(error)
            return 1
        else:
            return 0

if __name__ == '__main__':
    Main().cli()