import gzip
import json
import os

from ray_release.config import Test
from ray_release.logger import logger
from ray_release.reporter.reporter import Reporter
from ray_release.result import Result

# Write to this directory. run_release_tests.sh will copy the content
# overt to DEFAULT_ARTIFACTS_DIR_HOST
DEFAULT_ARTIFACTS_DIR = "/tmp/artifacts"

ARTIFACT_TEST_CONFIG_FILE = "test_config.json"
ARTIFACT_RESULT_FILE = "result.json"
METRICS_RESULT_FILE = "metrics.json.gz"


class ArtifactsReporter(Reporter):
    """This is called on on buildkite runners."""

    def __init__(self, artifacts_dir: str = DEFAULT_ARTIFACTS_DIR):
        self.artifacts_dir = artifacts_dir

    def report_result(self, test: Test, result: Result):
        if not os.path.exists(self.artifacts_dir):
            os.makedirs(self.artifacts_dir, 0o755)

        test_config_file = os.path.join(self.artifacts_dir, ARTIFACT_TEST_CONFIG_FILE)
        with open(test_config_file, "wt") as fp:
            json.dump(test, fp, sort_keys=True, indent=4)

        result_file = os.path.join(self.artifacts_dir, ARTIFACT_RESULT_FILE)
        result_dict = result.__dict__
        metrics_dict = result_dict.pop("prometheus_metrics")
        with open(result_file, "wt") as fp:
            json.dump(result_dict, fp, sort_keys=True, indent=4)

        logger.info(
            f"Wrote test config and result to artifacts directory: {self.artifacts_dir}"
        )

        if metrics_dict:
            metrics_file = os.path.join(self.artifacts_dir, METRICS_RESULT_FILE)
            with gzip.open(metrics_file, "wt", encoding="UTF-8") as fp:
                json.dump(metrics_dict, fp, sort_keys=True, indent=4)

            logger.info(
                f"Wrote prometheus metrics to artifacts directory: {self.artifacts_dir}"
            )