# -*- coding: utf-8 -*-
"""Contract tests for channel adapters."""

from agent_reach.channels import get_all_channels
from agent_reach.config import Config


def test_channel_registry_contract():
    channels = get_all_channels()
    assert channels, "channel registry must not be empty"
    names = [ch.name for ch in channels]
    assert len(names) == len(set(names)), "channel names must be unique"

    for ch in channels:
        assert isinstance(ch.name, str) and ch.name
        assert isinstance(ch.description, str) and ch.description
        assert isinstance(ch.backends, list)
        assert ch.tier in {0, 1, 2}


def test_channel_check_contract_with_minimal_runtime(monkeypatch, tmp_path):
    # Keep contract tests deterministic by simulating "deps mostly absent".
    monkeypatch.setattr("shutil.which", lambda _cmd: None)
    config = Config(config_path=tmp_path / "config.yaml")

    for ch in get_all_channels():
        status, message = ch.check(config)
        assert status in {"ok", "warn", "off", "error"}
        assert isinstance(message, str) and message.strip()


def test_channel_can_handle_contract():
    url_samples = {
        "github": "https://github.com/panniantong/agent-reach",
        "twitter": "https://x.com/user/status/1",
        "youtube": "https://youtube.com/watch?v=abc",
        "reddit": "https://reddit.com/r/python",
        "bilibili": "https://www.bilibili.com/video/BV1xx411",
        "xiaohongshu": "https://www.xiaohongshu.com/explore/123",
        "douyin": "https://www.douyin.com/video/123",
        "linkedin": "https://www.linkedin.com/in/test",
        "bosszhipin": "https://www.zhipin.com/web/geek/job?query=python",
        "rss": "https://example.com/feed.xml",
        "exa_search": "https://example.com",
        "web": "https://example.com",
    }
    for ch in get_all_channels():
        sample = url_samples.get(ch.name, "https://example.com")
        result = ch.can_handle(sample)
        assert isinstance(result, bool)