#!/usr/bin/env python
# coding=utf-8
#
# CI script to check build logs for warnings.
# Reads the list of builds, in the format produced by find_apps.py or build_apps.py, and finds warnings in the
# log files for every build.
# Exits with a non-zero exit code if any warning is found.

import argparse
import logging
import os
import re
import sys

try:
    from find_build_apps import BuildItem, setup_logging
except ImportError:
    sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..'))
    from find_build_apps import BuildItem, setup_logging

WARNING_REGEX = re.compile(r'(?:error|warning)[^\w]', re.MULTILINE | re.IGNORECASE)

IGNORE_WARNS = [
    re.compile(r_str) for r_str in [
        r'library/error\.o',
        r'/.*error\S*\.o',
        r'.*error.*\.c\.obj',
        r'.*error.*\.cpp\.obj',
        r'.*error.*\.cxx\.obj',
        r'.*error.*\.cc\.obj',
        r'-Werror',
        r'error\.d',
        r'/.*error\S*.d',
        r'reassigning to symbol',
        r'changes choice state',
        r'crosstool_version_check\.cmake',
        r'CryptographyDeprecationWarning',
        r'Warning: \d+/\d+ app partitions are too small for binary'
    ]
]


def line_has_warnings(line):  # type: (str) -> bool
    if not WARNING_REGEX.search(line):
        return False

    has_warnings = True
    for ignored in IGNORE_WARNS:
        if re.search(ignored, line):
            has_warnings = False
            break

    return has_warnings


def main():  # type: () -> None
    parser = argparse.ArgumentParser(description='ESP-IDF app builder')
    parser.add_argument(
        '-v',
        '--verbose',
        action='count',
        help='Increase the logging level of the script. Can be specified multiple times.',
    )
    parser.add_argument(
        '--log-file',
        type=argparse.FileType('w'),
        help='Write the script log to the specified file, instead of stderr',
    )
    parser.add_argument(
        'build_list',
        type=argparse.FileType('r'),
        nargs='?',
        default=sys.stdin,
        help='Name of the file to read the list of builds from. If not specified, read from stdin.',
    )
    args = parser.parse_args()
    setup_logging(args)

    build_items = [BuildItem.from_json(line) for line in args.build_list]
    if not build_items:
        logging.warning('Empty build list')
        SystemExit(0)

    found_warnings = 0
    for build_item in build_items:
        if not build_item.build_log_path:
            logging.debug('No log file for {}'.format(build_item.work_dir))
            continue
        with open(build_item.build_log_path, 'r') as log_file:
            for line_no, line in enumerate(log_file):
                if line_has_warnings(line):
                    logging.error('Issue in app {}, config {}:'.format(build_item.app_dir, build_item.config_name))
                    logging.error(line.rstrip('\n'))
                    logging.error('See {}:{} for details'.format(os.path.basename(build_item.build_log_path),
                                                                 line_no + 1))
                    found_warnings += 1
                    break

    if found_warnings:
        logging.error('Checked {} builds, found {} warnings'.format(len(build_items), found_warnings))
        raise SystemExit(1)

    logging.info('No warnings found')


if __name__ == '__main__':
    main()