from __future__ import annotations

import json
import unittest

from scripts.prepare_channel_metadata import prepare_channel_metadata
from scripts.release_lib import ReleaseToolError


def manifest(version: str, channel: str) -> bytes:
	value = {
		"application": "PristonTale-EU",
		"archive": {
			"name": f"PristonTale-EU-{version}.tar.gz",
			"sha256": "a" * 64,
			"size": 123,
			"url": f"https://gitea.example.test/releases/download/v{version}/PristonTale-EU-{version}.tar.gz",
		},
		"archive_sha256": "a" * 64,
		"archive_size": 123,
		"archive_url": f"https://gitea.example.test/releases/download/v{version}/PristonTale-EU-{version}.tar.gz",
		"channel": channel,
		"compatibility": {
			"config_schema": 1,
			"manifest_schema": 1,
			"minimum_config_schema": 1,
			"minimum_updater_version": "0.5.0",
		},
		"minimum_updater_version": "0.5.0",
		"notes_url": f"https://gitea.example.test/releases/tag/v{version}",
		"published_at": "2026-09-08T12:00:00Z",
		"schema": 1,
		"status": "active",
		"tag": f"v{version}",
		"version": version,
	}
	return (json.dumps(value, sort_keys=True) + "\n").encode()


def record(version: str, channel: str, status: str) -> dict[str, object]:
	return {
		"channel": channel,
		"compatibility": {
			"config_schema": 1,
			"minimum_config_schema": 1,
		},
		"manifest_url": f"https://gitea.example.test/releases/download/v{version}/manifest.json",
		"status": status,
		"tag": f"v{version}",
		"version": version,
	}


class ChannelMetadataTests(unittest.TestCase):
	def test_selects_latest_active_release_instead_of_withdrawn_head(self) -> None:
		history = {
			"schema": 1,
			"releases": [
				record("1.9.0", "stable", "withdrawn"),
				record("1.8.0", "stable", "active"),
			],
		}

		selected, prepared = prepare_channel_metadata(
			history,
			"stable",
			manifest("1.8.0", "stable"),
		)

		self.assertEqual(selected["version"], "1.8.0")
		self.assertEqual(prepared["status"], "active")

	def test_marks_channel_inactive_when_no_active_release_exists(self) -> None:
		history = {
			"schema": 1,
			"releases": [record("1.9.0-beta.1", "prerelease", "blocked")],
		}

		selected, prepared = prepare_channel_metadata(
			history,
			"prerelease",
			manifest("1.9.0-beta.1", "prerelease"),
		)

		self.assertEqual(selected["version"], "1.9.0-beta.1")
		self.assertEqual(prepared["status"], "blocked")

	def test_rejects_a_manifest_that_does_not_match_selected_history(self) -> None:
		history = {
			"schema": 1,
			"releases": [record("1.8.0", "stable", "active")],
		}
		with self.assertRaisesRegex(ReleaseToolError, "does not match"):
			prepare_channel_metadata(
				history,
				"stable",
				manifest("1.7.4", "stable"),
			)


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