import io
import os
from pathlib import Path
import json
import uuid
import shutil
from attr import asdict
from allure_commons import hookimpl

INDENT = 4


class AllureFileLogger:

    def __init__(self, report_dir, clean=False):
        self._report_dir = Path(report_dir).absolute()
        if self._report_dir.is_dir() and clean:
            shutil.rmtree(self._report_dir)
        self._report_dir.mkdir(parents=True, exist_ok=True)

    def _report_item(self, item):
        indent = INDENT if os.environ.get("ALLURE_INDENT_OUTPUT") else None
        filename = item.file_pattern.format(prefix=uuid.uuid4())
        data = asdict(item, filter=lambda _, v: v or v is False)
        with io.open(self._report_dir / filename, 'w', encoding='utf8') as json_file:
            json.dump(data, json_file, indent=indent, ensure_ascii=False)

    @hookimpl
    def report_result(self, result):
        self._report_item(result)

    @hookimpl
    def report_container(self, container):
        self._report_item(container)

    @hookimpl
    def report_attached_file(self, source, file_name):
        destination = self._report_dir / file_name
        shutil.copy2(source, destination)

    @hookimpl
    def report_attached_data(self, body, file_name):
        destination = self._report_dir / file_name
        with open(destination, 'wb') as attached_file:
            if isinstance(body, str):
                attached_file.write(body.encode('utf-8'))
            else:
                attached_file.write(body)


class AllureMemoryLogger:

    def __init__(self):
        self.test_cases = []
        self.test_containers = []
        self.attachments = {}

    @hookimpl
    def report_result(self, result):
        data = asdict(result, filter=lambda _, v: v or v is False)
        self.test_cases.append(data)

    @hookimpl
    def report_container(self, container):
        data = asdict(container, filter=lambda _, v: v or v is False)
        self.test_containers.append(data)

    @hookimpl
    def report_attached_file(self, source, file_name):
        self.attachments[file_name] = source

    @hookimpl
    def report_attached_data(self, body, file_name):
        self.attachments[file_name] = body