try:
    from .base_engine import *
except ImportError:
    from base_engine import *
import re


class FFMPEG(BaseRenderEngine):

    @classmethod
    def version(cls):
        version = None
        try:
            ver_out = subprocess.check_output([cls.renderer_path(), '-version'],
                                              timeout=SUBPROCESS_TIMEOUT).decode('utf-8')
            match = re.match(".*version\s*(\S+)\s*Copyright", ver_out)
            if match:
                version = match.groups()[0]
        except Exception as e:
            logger.error("Failed to get FFMPEG version: {}".format(e))
        return version

    @classmethod
    def get_encoders(cls):
        raw_stdout = subprocess.check_output([cls.renderer_path(), '-encoders'], stderr=subprocess.DEVNULL,
                                               timeout=SUBPROCESS_TIMEOUT).decode('utf-8')
        pattern = '(?P<type>[VASFXBD.]{6})\s+(?P<name>\S{2,})\s+(?P<description>.*)'
        encoders = [m.groupdict() for m in re.finditer(pattern, raw_stdout)]
        return encoders

    @classmethod
    def get_all_formats(cls):
        raw_stdout = subprocess.check_output([cls.renderer_path(), '-formats'], stderr=subprocess.DEVNULL,
                                              timeout=SUBPROCESS_TIMEOUT).decode('utf-8')
        pattern = '(?P<type>[DE]{1,2})\s+(?P<name>\S{2,})\s+(?P<description>.*)'
        formats = [m.groupdict() for m in re.finditer(pattern, raw_stdout)]
        return formats

    @classmethod
    def get_output_formats(cls):
        return [x for x in cls.get_all_formats() if 'E' in x['type'].upper()]

    @classmethod
    def get_frame_count(cls, path_to_file):
        raw_stdout = subprocess.check_output([cls.renderer_path(), '-i', path_to_file, '-map', '0:v:0', '-c', 'copy',
                                               '-f', 'null', '-'], stderr=subprocess.STDOUT,
                                              timeout=SUBPROCESS_TIMEOUT).decode('utf-8')
        match = re.findall(r'frame=\s*(\d+)', raw_stdout)
        if match:
            frame_number = int(match[-1])
            return frame_number


if __name__ == "__main__":
    print(FFMPEG.get_frame_count('/Users/brett/Desktop/Big_Fire_02.mov'))