from __future__ import annotations

from yuxi.channels.adapters.whatsapp.accounts.account_config import merge_account_config
from yuxi.channels.adapters.whatsapp.accounts.account_selection import resolve_default_account
from yuxi.channels.adapters.whatsapp.accounts.accounts import AccountState, MultiAccountManager
from yuxi.channels.adapters.whatsapp.per_dm_config import PerDmConfig


class TestMergeAccountConfig:
    def test_override_simple_value(self):
        base = {"a": 1, "b": 2}
        override = {"b": 3, "c": 4}
        merged = merge_account_config(base, override)
        assert merged["a"] == 1
        assert merged["b"] == 3
        assert merged["c"] == 4

    def test_merge_nested_dicts(self):
        base = {"nested": {"x": 1, "y": 2}}
        override = {"nested": {"y": 20, "z": 30}}
        merged = merge_account_config(base, override)
        assert merged["nested"]["x"] == 1
        assert merged["nested"]["y"] == 20
        assert merged["nested"]["z"] == 30

    def test_override_nested_with_non_dict(self):
        base = {"nested": {"x": 1}}
        override = {"nested": "not_a_dict"}
        merged = merge_account_config(base, override)
        assert merged["nested"] == "not_a_dict"

    def test_empty_override(self):
        base = {"a": 1}
        merged = merge_account_config(base, {})
        assert merged == {"a": 1}

    def test_empty_base(self):
        merged = merge_account_config({}, {"a": 1})
        assert merged == {"a": 1}


class TestResolveDefaultAccount:
    def test_empty_list(self):
        assert resolve_default_account([]) is None

    def test_default_exists(self):
        assert resolve_default_account(["account1", "default", "account2"]) == "default"

    def test_no_default_returns_first(self):
        assert resolve_default_account(["account1", "account2"]) == "account1"

    def test_single_account(self):
        assert resolve_default_account(["only"]) == "only"


class TestAccountState:
    def test_create_basic(self):
        state = AccountState(
            account_id="test",
            config={"name": "Test"},
            auth_dir="/tmp/auth",
            bridge_port=1234,
        )
        assert state.account_id == "test"
        assert state.config["name"] == "Test"
        assert state.auth_dir == "/tmp/auth"
        assert state.bridge_port == 1234


class TestMultiAccountManager:
    def test_empty_config_creates_default(self):
        mgr = MultiAccountManager({})
        assert mgr.account_count == 1
        assert mgr.default_account_id == "default"
        assert mgr.get_config() == {}

    def test_default_account_id(self):
        mgr = MultiAccountManager({})
        assert mgr.default_account_id == "default"

    def test_get_config_default(self):
        mgr = MultiAccountManager({"setting": "value"})
        assert mgr.get_config()["setting"] == "value"

    def test_get_config_specific(self):
        mgr = MultiAccountManager({
            "accounts": {
                "acc1": {"setting": "value1"},
                "acc2": {"setting": "value2"},
            },
        })
        cfg = mgr.get_config("acc1")
        assert cfg["setting"] == "value1"

    def test_get_account_nonexistent(self):
        mgr = MultiAccountManager({})
        assert mgr.get_account("nonexistent") is None

    def test_list_account_ids(self):
        mgr = MultiAccountManager({
            "accounts": {
                "acc1": {},
                "acc2": {},
            },
        })
        ids = mgr.list_account_ids()
        assert set(ids) == {"acc1", "acc2"}

    def test_multiple_accounts_with_default_account_config(self):
        mgr = MultiAccountManager({
            "defaultAccount": "acc2",
            "accounts": {
                "acc1": {},
                "acc2": {},
            },
        })
        assert mgr.default_account_id == "acc2"

    def test_add_account(self):
        mgr = MultiAccountManager({})
        mgr.add_account("new_acc", {"setting": "value"})
        assert mgr.account_count == 2
        assert mgr.get_account("new_acc") is not None

    def test_remove_account(self):
        mgr = MultiAccountManager({
            "accounts": {
                "acc1": {},
                "acc2": {},
            },
        })
        assert mgr.remove_account("acc1") is True
        assert mgr.account_count == 1
        assert mgr.get_account("acc1") is None

    def test_remove_nonexistent_account(self):
        mgr = MultiAccountManager({})
        assert mgr.remove_account("nonexistent") is False

    def test_remove_default_account_reassigns(self):
        mgr = MultiAccountManager({
            "accounts": {
                "acc1": {},
                "acc2": {},
            },
        })
        old_default = mgr.default_account_id
        mgr.remove_account(old_default)
        assert mgr.default_account_id is not None
        assert mgr.account_count == 1

    def test_non_dict_account_config_uses_base(self):
        mgr = MultiAccountManager({
            "base_setting": "base_value",
            "accounts": {
                "acc1": "not_a_dict",
            },
        })
        cfg = mgr.get_config("acc1")
        assert cfg["base_setting"] == "base_value"

    def test_default_get_account_returns_default(self):
        mgr = MultiAccountManager({"setting": "val"})
        acc = mgr.get_account()
        assert acc is not None
        assert acc.account_id == "default"

    def test_get_config_none_returns_empty(self):
        mgr = MultiAccountManager({})
        mgr.remove_account("default")
        assert mgr.get_config() == {}


class TestPerDmConfig:
    def test_from_config_empty(self):
        cfg = PerDmConfig.from_config({})
        assert len(cfg.entries) == 0

    def test_from_config_with_entries(self):
        cfg = PerDmConfig.from_config({
            "direct": {
                "8613800138000": {"enabled": True, "systemPrompt": "custom"},
                "8613800138001": {"enabled": False},
            }
        })
        assert len(cfg.entries) == 2

    def test_from_config_bool_value(self):
        cfg = PerDmConfig.from_config({
            "direct": {
                "8613800138000": True,
            }
        })
        entry = cfg.get("8613800138000")
        assert entry is not None
        assert entry["enabled"] is True

    def test_get_by_phone_exact(self):
        cfg = PerDmConfig.from_config({
            "direct": {"8613800138000": {"enabled": True}}
        })
        assert cfg.get("8613800138000") is not None

    def test_get_by_phone_with_plus(self):
        cfg = PerDmConfig.from_config({
            "direct": {"8613800138000": {"enabled": True}}
        })
        assert cfg.get("+8613800138000") is not None

    def test_get_by_phone_normalized(self):
        cfg = PerDmConfig.from_config({
            "direct": {"+1 555 123 4567": {"enabled": False}}
        })
        entry = cfg.get("15551234567")
        assert entry is not None
        assert entry["enabled"] is False

    def test_get_nonexistent(self):
        cfg = PerDmConfig.from_config({})
        assert cfg.get("nonexistent") is None

    def test_is_enabled_default_true(self):
        cfg = PerDmConfig.from_config({})
        assert cfg.is_enabled("8613800138000") is True

    def test_is_enabled_false(self):
        cfg = PerDmConfig.from_config({
            "direct": {"8613800138000": {"enabled": False}}
        })
        assert cfg.is_enabled("8613800138000") is False

    def test_system_prompt_exists(self):
        cfg = PerDmConfig.from_config({
            "direct": {"8613800138000": {"systemPrompt": "You are helpful"}}
        })
        assert cfg.system_prompt("8613800138000") == "You are helpful"

    def test_system_prompt_none(self):
        cfg = PerDmConfig.from_config({})
        assert cfg.system_prompt("unknown") is None

    def test_system_prompt_not_set(self):
        cfg = PerDmConfig.from_config({
            "direct": {"8613800138000": {"enabled": True}}
        })
        assert cfg.system_prompt("8613800138000") is None