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from __future__ import annotations

import tempfile
import unittest
from pathlib import Path

from fastapi import status
from fastapi.testclient import TestClient

from app.api.dependencies import get_container
from app.main import create_app
from tests.integration.api.support import (
    FakeProcessRemoteImage,
    FakeProcessUploadedImage,
    FailingProcessRemoteImage,
    InvalidProcessRemoteImage,
    make_container,
)

TEST_IMAGE_URL = "https://httpbin.org/image/jpeg"


class ApiProcessUrlIntegrationTests(unittest.TestCase):
    def test_process_url_returns_job_id_on_success(self) -> None:
        with tempfile.TemporaryDirectory() as temp_dir:
            root = Path(temp_dir)
            process_remote_image = FakeProcessRemoteImage()
            app = create_app()
            app.dependency_overrides[get_container] = lambda: make_container(
                root,
                process_remote_image=process_remote_image,
                process_uploaded_image=FakeProcessUploadedImage(),
            )
            client = TestClient(app)
            try:
                response = client.post("/process/url", json={"sourceUrl": TEST_IMAGE_URL})

                self.assertEqual(status.HTTP_200_OK, response.status_code)
                self.assertEqual("test-remote-job", response.json()["jobId"])
                self.assertEqual(1, len(process_remote_image.calls))
                self.assertEqual(TEST_IMAGE_URL, process_remote_image.calls[0].source_url)
            finally:
                client.close()
                app.dependency_overrides.clear()

    def test_process_url_returns_500_for_runtime_errors(self) -> None:
        with tempfile.TemporaryDirectory() as temp_dir:
            root = Path(temp_dir)
            app = create_app()
            app.dependency_overrides[get_container] = lambda: make_container(
                root,
                process_remote_image=FailingProcessRemoteImage(),
                process_uploaded_image=FakeProcessUploadedImage(),
            )
            client = TestClient(app)
            try:
                response = client.post("/process/url", json={"sourceUrl": TEST_IMAGE_URL})

                self.assertEqual(status.HTTP_500_INTERNAL_SERVER_ERROR, response.status_code)
                self.assertEqual("Internal processing error.", response.json()["detail"])
            finally:
                client.close()
                app.dependency_overrides.clear()

    def test_process_url_returns_400_for_value_errors(self) -> None:
        with tempfile.TemporaryDirectory() as temp_dir:
            root = Path(temp_dir)
            app = create_app()
            app.dependency_overrides[get_container] = lambda: make_container(
                root,
                process_remote_image=InvalidProcessRemoteImage(),
                process_uploaded_image=FakeProcessUploadedImage(),
            )
            client = TestClient(app)
            try:
                response = client.post("/process/url", json={"sourceUrl": TEST_IMAGE_URL})

                self.assertEqual(status.HTTP_400_BAD_REQUEST, response.status_code)
                self.assertEqual("invalid source", response.json()["detail"])
            finally:
                client.close()
                app.dependency_overrides.clear()


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