from __future__ import annotations

import os
import time
import zipfile
from io import BytesIO
from typing import Any

from django.core.files.uploadedfile import SimpleUploadedFile
from django.urls import reverse

from sentry.models.debugfile import DifMeta, ProjectDebugFile, create_dif_from_id
from sentry.models.files.file import File
from sentry.testutils.cases import APITestCase, TestCase
from sentry.testutils.silo import region_silo_test

# This is obviously a freely generated UUID and not the checksum UUID.
# This is permissible if users want to send different UUIDs
PROGUARD_UUID = "6dc7fdb0-d2fb-4c8e-9d6b-bb1aa98929b1"
PROGUARD_SOURCE = b"""\
org.slf4j.helpers.Util$ClassContextSecurityManager -> org.a.b.g$a:
65:65:void <init>() -> <init>
67:67:java.lang.Class[] getClassContext() -> getClassContext
65:65:void <init>(org.slf4j.helpers.Util$1) -> <init>
"""


@region_silo_test
class DebugFileTest(TestCase):
    def test_delete_dif(self):
        dif = self.create_dif_file(
            debug_id="dfb8e43a-f242-3d73-a453-aeb6a777ef75-feedface", features=["debug", "unwind"]
        )

        dif_id = dif.id
        dif.delete()

        assert not ProjectDebugFile.objects.filter(id=dif_id).exists()
        assert not File.objects.filter(id=dif.file.id).exists()

    def test_find_dif_by_debug_id(self):
        debug_id1 = "dfb8e43a-f242-3d73-a453-aeb6a777ef75"
        debug_id2 = "19bd7a09-3e31-4911-a5cd-8e829b845407"
        debug_id3 = "7d402821-fae6-4ebc-bbb2-152f8e3b3352"

        self.create_dif_file(debug_id=debug_id1)
        dif1 = self.create_dif_file(debug_id=debug_id1)
        dif2 = self.create_dif_file(debug_id=debug_id2)

        difs = ProjectDebugFile.objects.find_by_debug_ids(
            project=self.project, debug_ids=[debug_id1, debug_id2, debug_id3]
        )

        assert difs[debug_id1].id == dif1.id
        assert difs[debug_id2].id == dif2.id
        assert debug_id3 not in difs

    def test_find_dif_by_feature(self):
        debug_id1 = "dfb8e43a-f242-3d73-a453-aeb6a777ef75"
        debug_id2 = "19bd7a09-3e31-4911-a5cd-8e829b845407"
        debug_id3 = "7d402821-fae6-4ebc-bbb2-152f8e3b3352"

        self.create_dif_file(debug_id=debug_id1, features=["debug"])
        dif1 = self.create_dif_file(debug_id=debug_id1, features=["debug"])
        self.create_dif_file(debug_id=debug_id1, features=["unwind"])
        dif2 = self.create_dif_file(debug_id=debug_id2)

        difs = ProjectDebugFile.objects.find_by_debug_ids(
            project=self.project, debug_ids=[debug_id1, debug_id2, debug_id3], features=["debug"]
        )

        assert difs[debug_id1].id == dif1.id
        assert difs[debug_id2].id == dif2.id
        assert debug_id3 not in difs

    def test_find_dif_by_features(self):
        debug_id1 = "dfb8e43a-f242-3d73-a453-aeb6a777ef75"
        debug_id2 = "19bd7a09-3e31-4911-a5cd-8e829b845407"
        debug_id3 = "7d402821-fae6-4ebc-bbb2-152f8e3b3352"

        dif1 = self.create_dif_file(debug_id=debug_id1, features=["debug", "unwind"])
        self.create_dif_file(debug_id=debug_id1, features=["debug"])
        self.create_dif_file(debug_id=debug_id1, features=["unwind"])
        dif2 = self.create_dif_file(debug_id=debug_id2)

        difs = ProjectDebugFile.objects.find_by_debug_ids(
            project=self.project,
            debug_ids=[debug_id1, debug_id2, debug_id3],
            features=["debug", "unwind"],
        )

        assert difs[debug_id1].id == dif1.id
        assert difs[debug_id2].id == dif2.id
        assert debug_id3 not in difs

    def test_find_legacy_dif_by_features(self):
        debug_id1 = "dfb8e43a-f242-3d73-a453-aeb6a777ef75"
        self.create_dif_file(debug_id=debug_id1)
        dif1 = self.create_dif_file(debug_id=debug_id1)

        # XXX: If no file has features, in a group, the newest one is chosen,
        # regardless of the required feature set.
        difs = ProjectDebugFile.objects.find_by_debug_ids(
            project=self.project, debug_ids=[debug_id1], features=["debug"]
        )
        assert difs[debug_id1].id == dif1.id

    def test_find_dif_miss_by_features(self):
        debug_id = "dfb8e43a-f242-3d73-a453-aeb6a777ef75"
        self.create_dif_file(debug_id=debug_id, features=[])

        difs = ProjectDebugFile.objects.find_by_debug_ids(
            project=self.project, debug_ids=[debug_id], features=["debug"]
        )
        assert debug_id not in difs


class CreateDebugFileTest(APITestCase):
    @property
    def file_path(self):
        return os.path.join(os.path.dirname(__file__), "fixtures", "crash.dsym")

    def create_dif(self, fileobj=None, file=None, **kwargs):
        args: dict[str, Any] = {
            "file_format": "macho",
            "arch": "x86_64",
            "debug_id": "67e9247c-814e-392b-a027-dbde6748fcbf",
            "data": {"features": ["debug"]},
            "path": "crash.dsym",
        }

        args.update(kwargs)
        return create_dif_from_id(self.project, DifMeta(**args), fileobj=fileobj, file=file)

    def test_create_dif_from_file(self):
        file = self.create_file(
            name="crash.dsym", checksum="dc1e3f3e411979d336c3057cce64294f3420f93a"
        )
        dif, created = self.create_dif(file=file)

        assert created
        assert dif is not None
        assert dif.file.type == "project.dif"
        assert "Content-Type" in dif.file.headers
        assert ProjectDebugFile.objects.filter(id=dif.id).exists()

    def test_create_dif_from_fileobj(self):
        with open(self.file_path, "rb") as f:
            dif, created = self.create_dif(fileobj=f)

        assert created
        assert dif is not None
        assert dif.file.type == "project.dif"
        assert "Content-Type" in dif.file.headers
        assert ProjectDebugFile.objects.filter(id=dif.id).exists()

    def test_keep_disjoint_difs(self):
        file = self.create_file(
            name="crash.dsym", checksum="dc1e3f3e411979d336c3057cce64294f3420f93a"
        )
        dif1, created1 = self.create_dif(file=file, data={"features": ["unwind"]})

        file = self.create_file(
            name="crash.dsym", checksum="2b92c5472f4442a27da02509951ea2e0f529511c"
        )
        dif2, created2 = self.create_dif(file=file, data={"features": ["debug"]})

        assert created1 and created2
        assert ProjectDebugFile.objects.filter(id=dif1.id).exists()
        assert ProjectDebugFile.objects.filter(id=dif2.id).exists()

    def test_keep_overlapping_difs(self):
        file = self.create_file(
            name="crash.dsym", checksum="dc1e3f3e411979d336c3057cce64294f3420f93a"
        )
        dif1, created1 = self.create_dif(file=file, data={"features": ["symtab", "unwind"]})

        file = self.create_file(
            name="crash.dsym", checksum="2b92c5472f4442a27da02509951ea2e0f529511c"
        )
        dif2, created2 = self.create_dif(file=file, data={"features": ["symtab", "debug"]})

        assert created1 and created2
        assert ProjectDebugFile.objects.filter(id=dif1.id).exists()
        assert ProjectDebugFile.objects.filter(id=dif2.id).exists()

    def test_keep_latest_dif(self):
        file = self.create_file(
            name="crash.dsym", checksum="dc1e3f3e411979d336c3057cce64294f3420f93a"
        )
        dif1, created1 = self.create_dif(file=file, data={"features": ["debug", "unwind"]})

        file = self.create_file(
            name="crash.dsym", checksum="2b92c5472f4442a27da02509951ea2e0f529511c"
        )
        dif2, created2 = self.create_dif(file=file, data={"features": ["debug"]})

        file = self.create_file(
            name="crash.dsym", checksum="3c60980275c4adc81a657f6aae00e11ed528b538"
        )
        dif3, created3 = self.create_dif(file=file, data={"features": []})

        # XXX: dif2 and dif3 would actually be redundant, but since they are more
        # recent than dif1 we keep both of them. This assumes that newer uploads
        # might contain more specific debug information and should therefore
        # receive precedence over older ones.
        assert created1 and created2 and created3
        assert ProjectDebugFile.objects.filter(id=dif1.id).exists()
        assert ProjectDebugFile.objects.filter(id=dif2.id).exists()
        assert ProjectDebugFile.objects.filter(id=dif3.id).exists()

    def test_skip_redundant_dif(self):
        with open(self.file_path, "rb") as f:
            dif1, created1 = self.create_dif(fileobj=f)

        with open(self.file_path, "rb") as f:
            dif2, created2 = self.create_dif(fileobj=f)

        assert created1
        assert not created2
        assert dif1 == dif2

    def test_remove_redundant_dif(self):
        file = self.create_file(
            name="crash.dsym", checksum="dc1e3f3e411979d336c3057cce64294f3420f93a"
        )
        dif1, created1 = self.create_dif(file=file, data={"features": ["debug"]})

        file = self.create_file(
            name="crash.dsym", checksum="2b92c5472f4442a27da02509951ea2e0f529511c"
        )
        dif2, created2 = self.create_dif(file=file, data={"features": ["debug"]})

        assert created1 and created2
        assert not ProjectDebugFile.objects.filter(id=dif1.id).exists()
        assert ProjectDebugFile.objects.filter(id=dif2.id).exists()


class DebugFilesClearTest(APITestCase):
    def test_simple_cache_clear(self):
        project = self.create_project(name="foo")

        url = reverse(
            "sentry-api-0-dsym-files",
            kwargs={"organization_slug": project.organization.slug, "project_slug": project.slug},
        )

        self.login_as(user=self.user)

        out = BytesIO()
        f = zipfile.ZipFile(out, "w")
        f.writestr("proguard/%s.txt" % PROGUARD_UUID, PROGUARD_SOURCE)
        f.writestr("ignored-file.txt", b"This is just some stuff")
        f.close()

        response = self.client.post(
            url,
            {
                "file": SimpleUploadedFile(
                    "symbols.zip", out.getvalue(), content_type="application/zip"
                )
            },
            format="multipart",
        )

        assert response.status_code == 201, response.content
        assert len(response.data) == 1
        assert response.data[0]["headers"] == {"Content-Type": "text/x-proguard+plain"}
        assert response.data[0]["sha1"] == "e6d3c5185dac63eddfdc1a5edfffa32d46103b44"
        assert response.data[0]["uuid"] == PROGUARD_UUID
        assert response.data[0]["objectName"] == "proguard-mapping"
        assert response.data[0]["cpuName"] == "any"
        assert response.data[0]["symbolType"] == "proguard"

        difs = ProjectDebugFile.difcache.fetch_difs(
            project=project, debug_ids=[PROGUARD_UUID], features=["mapping"]
        )
        assert len(difs) == 1
        assert os.path.isfile(difs[PROGUARD_UUID])

        # if we clear now, nothing happens
        ProjectDebugFile.difcache.clear_old_entries()
        assert os.path.isfile(difs[PROGUARD_UUID])

        # Put the time into the future
        real_time = time.time
        time.time = lambda: real_time() + 60 * 60 * 48
        try:
            ProjectDebugFile.difcache.clear_old_entries()
        finally:
            time.time = real_time

        # But it's gone now
        assert not os.path.isfile(difs[PROGUARD_UUID])
