#!/usr/bin/env python3

import hashlib
import json
import sys
import tempfile
import unittest
from pathlib import Path


PROJECT_ROOT = Path(__file__).resolve().parents[1]
sys.path[:0] = [
    str(PROJECT_ROOT / "packages" / "jwebot-config" / "src"),
    str(PROJECT_ROOT / "packages" / "jwebot-sdk" / "src"),
    str(PROJECT_ROOT / "packages" / "jwebot-official-extensions" / "src"),
    str(PROJECT_ROOT / "packages" / "jwebot-kernel" / "src"),
]

from jwebot_kernel.conversation_scope import (  # noqa: E402
    ConversationConfigError,
    ConversationKind,
    ConversationTarget,
    ShadowConversationRegistry,
    build_shadow_event,
)


def fingerprint(label: str) -> str:
    return hashlib.sha256(label.encode()).hexdigest()


class ConversationTargetTests(unittest.TestCase):
    def test_group_requires_an_explicit_mention(self):
        target = ConversationTarget(
            key="main-group",
            kind=ConversationKind.GROUP,
            title_fingerprint=fingerprint("main-group"),
        )

        self.assertEqual(
            target.question("@JWeBot hello", bot_mention="JWeBot"),
            "hello",
        )
        self.assertEqual(target.question("hello", bot_mention="JWeBot"), "")

    def test_direct_chat_accepts_only_commands_or_wake_words(self):
        target = ConversationTarget(
            key="test-direct",
            kind=ConversationKind.DIRECT,
            title_fingerprint=fingerprint("test-direct"),
            sender="Test User",
        )

        self.assertEqual(
            target.question("/状态", bot_mention="JWeBot"),
            "/状态",
        )
        self.assertEqual(
            target.question("JWeBot: hello", bot_mention="JWeBot"),
            "hello",
        )
        self.assertEqual(target.question("普通聊天", bot_mention="JWeBot"), "")

    def test_direct_chat_requires_a_configured_sender(self):
        with self.assertRaisesRegex(ConversationConfigError, "direct sender"):
            ConversationTarget(
                key="test-direct",
                kind=ConversationKind.DIRECT,
                title_fingerprint=fingerprint("test-direct"),
            )

    def test_title_identity_must_be_a_sha256_digest(self):
        with self.assertRaisesRegex(ConversationConfigError, "SHA-256"):
            ConversationTarget(
                key="test-direct",
                kind=ConversationKind.DIRECT,
                title_fingerprint="visible-contact-name",
                sender="Test User",
            )


class ShadowRegistryTests(unittest.TestCase):
    def test_registry_is_disabled_without_an_explicit_path(self):
        registry = ShadowConversationRegistry.from_environment({})

        self.assertFalse(registry.enabled)
        self.assertEqual(registry.targets, ())

    def test_disabled_registry_never_matches_targets(self):
        digest = fingerprint("test-direct")
        registry = ShadowConversationRegistry.from_mapping(
            {
                "format_version": 1,
                "enabled": False,
                "targets": [
                    {
                        "key": "test-direct",
                        "kind": "direct",
                        "title_fingerprint": digest,
                        "sender": "Test User",
                    }
                ],
            }
        )

        self.assertIsNone(registry.target_for_fingerprint(digest))

    def test_explicit_config_loads_only_shadow_targets(self):
        digest = fingerprint("test-direct")
        config = {
            "format_version": 1,
            "enabled": True,
            "targets": [
                {
                    "key": "test-direct",
                    "kind": "direct",
                    "title_fingerprint": digest,
                    "sender": "Test User",
                }
            ],
        }
        with tempfile.TemporaryDirectory() as directory:
            path = Path(directory) / "shadow.json"
            path.write_text(json.dumps(config), encoding="utf-8")
            registry = ShadowConversationRegistry.from_environment(
                {"JWEBOT_CONVERSATION_SHADOW_CONFIG": str(path)}
            )

        self.assertTrue(registry.enabled)
        self.assertEqual(registry.target_for_fingerprint(digest), registry.targets[0])

    def test_duplicate_title_fingerprints_are_rejected(self):
        digest = fingerprint("duplicate")
        with self.assertRaisesRegex(ConversationConfigError, "fingerprints"):
            ShadowConversationRegistry.from_mapping(
                {
                    "format_version": 1,
                    "enabled": True,
                    "targets": [
                        {
                            "key": "direct-a",
                            "kind": "direct",
                            "title_fingerprint": digest,
                            "sender": "Test A",
                        },
                        {
                            "key": "direct-b",
                            "kind": "direct",
                            "title_fingerprint": digest,
                            "sender": "Test B",
                        },
                    ],
                }
            )

    def test_group_targets_are_rejected_in_private_shadow_phase(self):
        with self.assertRaisesRegex(ConversationConfigError, "direct targets only"):
            ShadowConversationRegistry.from_mapping(
                {
                    "format_version": 1,
                    "enabled": True,
                    "targets": [
                        {
                            "key": "main-group",
                            "kind": "group",
                            "title_fingerprint": fingerprint("main-group"),
                        }
                    ],
                }
            )

    def test_unknown_delivery_field_is_rejected(self):
        with self.assertRaisesRegex(ConversationConfigError, "unknown fields"):
            ShadowConversationRegistry.from_mapping(
                {
                    "format_version": 1,
                    "enabled": True,
                    "delivery_enabled": True,
                    "targets": [],
                }
            )


class ShadowEventTests(unittest.TestCase):
    def test_direct_event_uses_verified_conversation_identity(self):
        digest = fingerprint("test-direct")
        target = ConversationTarget(
            key="test-direct",
            kind=ConversationKind.DIRECT,
            title_fingerprint=digest,
            sender="Test User",
        )

        event = build_shadow_event(
            target,
            observed_at="2026-10-20T12:00:00+08:00",
            text="/状态",
            body_confidence=0.98,
            visual_signature="visual-1",
            bot_mention="JWeBot",
        )

        self.assertEqual(event["sender"], "Test User")
        self.assertEqual(event["sender_confidence"], 1.0)
        self.assertEqual(event["question"], "/状态")
        self.assertTrue(event["mention_bot"])
        self.assertEqual(event["group_fingerprint"], digest)
        self.assertEqual(event["conversation_kind"], "direct")
        self.assertTrue(event["shadow_only"])
        self.assertFalse(event["dispatch_allowed"])

    def test_unaddressed_direct_message_is_observed_but_not_triggered(self):
        target = ConversationTarget(
            key="test-direct",
            kind=ConversationKind.DIRECT,
            title_fingerprint=fingerprint("test-direct"),
            sender="Test User",
        )

        event = build_shadow_event(
            target,
            observed_at="2026-10-20T12:00:00+08:00",
            text="普通聊天",
            body_confidence=0.98,
            visual_signature="visual-2",
            bot_mention="JWeBot",
        )

        self.assertEqual(event["question"], "")
        self.assertFalse(event["mention_bot"])
        self.assertTrue(event["shadow_only"])
        self.assertFalse(event["dispatch_allowed"])


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