# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

import sys
import unittest
from os import path

import mozunit
from test_histogramtools_non_strict import load_histogram

TELEMETRY_ROOT_PATH = path.abspath(
    path.join(path.dirname(__file__), path.pardir, path.pardir)
)
sys.path.append(TELEMETRY_ROOT_PATH)
# The parsers live in a subdirectory of "build_scripts", account for that.
# NOTE: if the parsers are moved, this logic will need to be updated.
sys.path.append(path.join(TELEMETRY_ROOT_PATH, "build_scripts"))
from mozparsers import parse_histograms
from mozparsers.shared_telemetry_utils import ParserError


class TestParser(unittest.TestCase):
    def test_usecounter_collection_enabled(self):
        SAMPLE_HISTOGRAM = {
            "USE_COUNTER2_TEST_HISTOGRAM": {
                "expires_in_version": "never",
                "kind": "boolean",
                "description": "Whether a foo used bar",
            }
        }
        histograms = load_histogram(SAMPLE_HISTOGRAM)
        parse_histograms.load_allowlist()

        hist = parse_histograms.Histogram(
            "USE_COUNTER2_TEST_HISTOGRAM",
            histograms["USE_COUNTER2_TEST_HISTOGRAM"],
            strict_type_checks=True,
        )

        ParserError.exit_func()
        self.assertEqual(hist.dataset(), "nsITelemetry::DATASET_ALL_CHANNELS")
        self.assertEqual(hist.products(), ["firefox", "fennec"])

    def test_usecounter_histogram(self):
        SAMPLE_HISTOGRAM = {
            "USE_COUNTER2_TEST_HISTOGRAM": {
                "expires_in_version": "never",
                "kind": "boolean",
                "description": "Whether a foo used bar",
            }
        }
        histograms = load_histogram(SAMPLE_HISTOGRAM)
        parse_histograms.load_allowlist()

        hist = parse_histograms.Histogram(
            "USE_COUNTER2_TEST_HISTOGRAM",
            histograms["USE_COUNTER2_TEST_HISTOGRAM"],
            strict_type_checks=True,
        )

        ParserError.exit_func()
        self.assertEqual(hist.expiration(), "never")
        self.assertEqual(hist.kind(), "boolean")
        self.assertEqual(hist.description(), "Whether a foo used bar")
        self.assertEqual(hist.products(), ["firefox", "fennec"])


if __name__ == "__main__":
    mozunit.main()