import io
import os
import sys
import unittest
from unittest import mock

sys.path.insert(0, os.path.dirname(__file__))

from _helpers import TempDirMixin

from app import db, image_studio, image_studio_export, image_studio_generation, image_studio_images


class ImageStudioE2ETests(TempDirMixin, unittest.TestCase):
    def _png_bytes(self, color=(80, 130, 220)):
        from PIL import Image

        output = io.BytesIO()
        Image.new("RGB", (32, 32), color).save(output, format="PNG")
        return output.getvalue()

    def _config(self, temp_dir):
        return {
            "data_dir": temp_dir,
            "db_path": os.path.join(temp_dir, "cmshopee.db"),
            "image_dir": os.path.join(temp_dir, "images"),
            "ai": {
                "backend": "cmhub",
                "image_concurrency": 2,
                "retry": 0,
                "resolution": "1k",
                "jpg_quality": 90,
                "cmhub": {
                    "base_url": "https://cmhub.example.com",
                    "image_alias": "image-hd",
                    "connect_timeout": 3,
                    "download_with_curl": "false",
                },
            },
        }

    def _runtime(self):
        return {
            "base_url": "https://cmhub.example.com",
            "api_key": "sk-test",
            "alias": "image-hd",
            "connect_timeout": 3,
            "use_system_proxy": False,
            "download_with_curl": "false",
        }

    def test_mock_ai_studio_project_to_export_flow(self):
        with self.make_temp_dir() as temp_dir:
            cfg = self._config(temp_dir)
            db.init_db(cfg["db_path"])
            project = image_studio.create_or_get_project(
                account_alias="alias",
                account_slug="alias_slug",
                item_id="51100639510",
                draft_prompt="完整提示词",
                path=cfg["db_path"],
            )
            original = image_studio.sync_original_asset_urls(
                project.id,
                [{"index": 1, "src": "https://cdn.example.com/original.png"}],
                path=cfg["db_path"],
            )[0]

            remote = image_studio_images.RemoteImage(
                url=original.remote_url,
                content=self._png_bytes(),
                content_type="image/png",
                final_url=original.remote_url,
                redirected=False,
            )
            with mock.patch("app.image_studio_images.download_remote_image", return_value=remote):
                source = image_studio_images.download_original_asset(
                    original.id,
                    path=cfg["db_path"],
                    config=cfg,
                )

            submitted = []

            def fake_submit(method, url, api_key, **kwargs):
                task_id = f"cmhub-task-{len(submitted) + 1}"
                submitted.append(task_id)
                return {
                    "task_id": task_id,
                    "status": "queued",
                    "call_id": f"call-{len(submitted)}",
                    "points_cost": 2,
                    "points_balance": 100 - len(submitted) * 2,
                }

            def fake_poll(method, url, api_key, **kwargs):
                task_id = url.rsplit("/", 1)[-1]
                return {
                    "task_id": task_id,
                    "status": "succeeded",
                    "result": {"image_url": f"https://cdn.example.com/{task_id}.png"},
                }

            with mock.patch("app.image_studio_generation._runtime", return_value=self._runtime()), \
                    mock.patch(
                        "app.image_studio_generation.ai._cmhub_call_with_retry",
                        side_effect=fake_submit,
                    ), \
                    mock.patch("app.image_studio_generation.ai._cmhub_call_once", side_effect=fake_poll), \
                    mock.patch(
                        "app.image_studio_generation.ai._download_cmhub_image_with_retry",
                        return_value=(self._png_bytes(color=(10, 200, 120)), 0.1),
                    ):
                summary = image_studio_generation.generate_image_jobs(
                    project.id,
                    source.id,
                    "完整提示词",
                    2,
                    config=cfg,
                    path=cfg["db_path"],
                )

            self.assertEqual(2, summary["success"])
            generated = image_studio.list_assets(project.id, kind="generated_main", path=cfg["db_path"])
            self.assertEqual(2, len(generated))
            image_studio.replace_selections(
                project.id,
                "main",
                [asset.id for asset in generated],
                path=cfg["db_path"],
            )
            image_studio.replace_selections(project.id, "detail", [source.id], path=cfg["db_path"])

            export_parent = os.path.join(temp_dir, "exports")
            os.makedirs(export_parent)
            result = image_studio_export.export_project_selection(
                project.id,
                export_parent,
                path=cfg["db_path"],
                config=cfg,
            )

            self.assertEqual(2, result.main_count)
            self.assertEqual(1, result.detail_count)
            self.assertEqual(
                [
                    "51100639510_主图_1.jpg",
                    "51100639510_主图_2.jpg",
                    "51100639510_详情图_1.jpg",
                ],
                [os.path.basename(item.output_path) for item in result.files],
            )
            self.assertTrue(all(os.path.isfile(item.output_path) for item in result.files))

        self.assert_removed(temp_dir)


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