import yaml
from expander import filter_proxy, expand_config, build_mihomo_config

PROXY_FULL = {
    "name": "node1",
    "type": "ss",
    "server": "1.2.3.4",
    "port": 443,
    "password": "secret",
    "cipher": "aes-256-gcm",
    "alive": True,           # runtime field — should be stripped
    "history": [],           # runtime field — should be stripped
    "extra": {"foo": "bar"}, # runtime field — should be stripped
}

BASE_YAML = """
proxies: []
proxy-providers:
  provider1:
    type: http
    url: https://example.com/sub
    interval: 3600
proxy-groups:
  - name: Proxy
    type: select
    use:
      - provider1
rules:
  - MATCH,DIRECT
"""


def test_filter_proxy_removes_runtime_fields():
    filtered = filter_proxy(PROXY_FULL)
    assert "alive" not in filtered
    assert "history" not in filtered
    assert "extra" not in filtered
    assert filtered["name"] == "node1"
    assert filtered["server"] == "1.2.3.4"


def test_expand_config_replaces_providers_with_proxies():
    proxies = [
        {"name": "node1", "type": "ss", "server": "1.2.3.4", "port": 443,
         "password": "pwd", "cipher": "aes-256-gcm"},
    ]
    result = expand_config(BASE_YAML, {"provider1": proxies})
    cfg = yaml.safe_load(result)

    assert "proxy-providers" not in cfg
    assert any(p["name"] == "node1" for p in cfg["proxies"])


def test_expand_config_fills_use_in_proxy_groups():
    proxies = [
        {"name": "node1", "type": "ss", "server": "1.2.3.4", "port": 443,
         "password": "pwd", "cipher": "aes-256-gcm"},
        {"name": "node2", "type": "ss", "server": "5.6.7.8", "port": 443,
         "password": "pwd", "cipher": "aes-256-gcm"},
    ]
    result = expand_config(BASE_YAML, {"provider1": proxies})
    cfg = yaml.safe_load(result)

    proxy_group = next(g for g in cfg["proxy-groups"] if g["name"] == "Proxy")
    assert "use" not in proxy_group
    assert "node1" in proxy_group["proxies"]
    assert "node2" in proxy_group["proxies"]


def test_expand_config_preserves_existing_proxies():
    base = """
proxies:
  - name: static-node
    type: direct
proxy-providers:
  p1:
    type: http
    url: https://example.com/sub
    interval: 3600
proxy-groups: []
rules: []
"""
    result = expand_config(base, {"p1": [{"name": "dynamic-node", "type": "ss",
                                           "server": "1.2.3.4", "port": 443}]})
    cfg = yaml.safe_load(result)
    names = [p["name"] for p in cfg["proxies"]]
    assert "static-node" in names
    assert "dynamic-node" in names


def test_expand_config_empty_providers():
    result = expand_config(BASE_YAML, {})
    cfg = yaml.safe_load(result)
    assert "proxy-providers" not in cfg


def test_build_mihomo_config_merges_providers():
    yaml1 = """
proxy-providers:
  p1:
    type: http
    url: https://a.example.com/sub
    interval: 3600
    health-check:
      enable: true
      url: http://www.gstatic.com/generate_204
      interval: 300
"""
    yaml2 = """
proxy-providers:
  p2:
    type: http
    url: https://b.example.com/sub
    interval: 3600
"""
    result = build_mihomo_config([yaml1, yaml2], "mysecret")
    cfg = yaml.safe_load(result)

    assert cfg["external-controller"] == "0.0.0.0:9090"
    assert cfg["secret"] == "mysecret"
    assert cfg["mixed-port"] == 7890
    assert cfg["allow-lan"] is False
    assert "p1" in cfg["proxy-providers"]
    assert "p2" in cfg["proxy-providers"]
    assert cfg["proxy-providers"]["p1"]["health-check"]["enable"] is True


def test_build_mihomo_config_deduplicates_by_name():
    yaml1 = """
proxy-providers:
  p1:
    type: http
    url: https://original.example.com/sub
    interval: 3600
"""
    yaml2 = """
proxy-providers:
  p1:
    type: http
    url: https://duplicate.example.com/sub
    interval: 3600
"""
    result = build_mihomo_config([yaml1, yaml2], "s")
    cfg = yaml.safe_load(result)
    assert cfg["proxy-providers"]["p1"]["url"] == "https://original.example.com/sub"


def test_build_mihomo_config_no_providers():
    result = build_mihomo_config(["proxies: []"], "s")
    cfg = yaml.safe_load(result)
    assert "proxy-providers" not in cfg