import json
import re
from dataclasses import dataclass
from typing import Any

import pytest

from mealie.core.config import get_app_settings
from mealie.core.settings.settings import AppSettings


def test_non_default_settings(monkeypatch):
    monkeypatch.setenv("DEFAULT_GROUP", "Test Group")
    monkeypatch.setenv("DEFAULT_HOUSEHOLD", "Test Household")
    monkeypatch.setenv("API_PORT", "8000")
    monkeypatch.setenv("API_DOCS", "False")

    get_app_settings.cache_clear()
    app_settings = get_app_settings()

    assert app_settings.DEFAULT_GROUP == "Test Group"
    assert app_settings.DEFAULT_HOUSEHOLD == "Test Household"
    assert app_settings.API_PORT == 8000
    assert app_settings.API_DOCS is False

    assert app_settings.REDOC_URL is None
    assert app_settings.DOCS_URL is None


def test_default_connection_args(monkeypatch):
    monkeypatch.setenv("DB_ENGINE", "sqlite")
    get_app_settings.cache_clear()
    app_settings = get_app_settings()
    assert re.match(r"sqlite:////.*mealie*.db", app_settings.DB_URL)


def test_pg_connection_args(monkeypatch):
    monkeypatch.setenv("DB_ENGINE", "postgres")
    monkeypatch.setenv("POSTGRES_SERVER", "postgres")
    get_app_settings.cache_clear()
    app_settings = get_app_settings()
    assert app_settings.DB_URL == "postgresql://mealie:mealie@postgres:5432/mealie"


psql_validation_cases = [
    (
        "unencoded_to_encoded_password",
        [
            "POSTGRES_PASSWORD",
            "P@ssword!@#$%%^^&&**()+;'\"'<>?{}[]",
            "P%40ssword%21%40%23%24%25%25%5E%5E%26%26%2A%2A%28%29%2B%3B%27%22%27%3C%3E%3F%7B%7D%5B%5D",
        ],
    ),
    (
        "unencoded_to_encoded_url",
        [
            "POSTGRES_URL_OVERRIDE",
            "postgresql://mealie:P@ssword!@#$%%^^&&**()+;'\"'<>?{}[]@postgres:5432/mealie",
            "postgresql://mealie:P%40ssword%21%40%23%24%25%25%5E%5E%26%26%2A%2A%28%29%2B%3B%27%22%27%3C%3E%3F%7B%7D%5B%5D@postgres:5432/mealie",
        ],
    ),
    (
        "unencoded_to_encoded_no_port_url",
        [
            "POSTGRES_URL_OVERRIDE",
            "postgresql://mealie:P@ssword!@#$%%^^&&**()+;'\"'<>?{}[]@postgres/mealie",
            "postgresql://mealie:P%40ssword%21%40%23%24%25%25%5E%5E%26%26%2A%2A%28%29%2B%3B%27%22%27%3C%3E%3F%7B%7D%5B%5D@postgres/mealie",
        ],
    ),
    (
        "no_encode_needed_password",
        [
            "POSTGRES_PASSWORD",
            "MyPassword",
            "MyPassword",
        ],
    ),
    (
        "no_encode_needed_url",
        [
            "POSTGRES_URL_OVERRIDE",
            "postgresql://mealie:MyPassword@postgres:5432/mealie",
            "postgresql://mealie:MyPassword@postgres:5432/mealie",
        ],
    ),
    (
        "no_password_url",
        [
            "POSTGRES_URL_OVERRIDE",
            "postgresql://mealie@postgres:5432/mealie",
            "postgresql://mealie@postgres:5432/mealie",
        ],
    ),
    (
        "no_password_no_port_url",
        [
            "POSTGRES_URL_OVERRIDE",
            "postgresql://mealie@postgres/mealie",
            "postgresql://mealie@postgres/mealie",
        ],
    ),
    (
        "unix_socket_with_empty_password",
        [
            "POSTGRES_URL_OVERRIDE",
            "postgresql://mealie:@/mealie?host=/run/postgresql",
            "postgresql://mealie:@/mealie?host=/run/postgresql",
        ],
    ),
    (
        "unix_socket_no_password",
        [
            "POSTGRES_URL_OVERRIDE",
            "postgresql://mealie@/mealie?host=/run/postgresql",
            "postgresql://mealie@/mealie?host=/run/postgresql",
        ],
    ),
    (
        "no_credentials_at_all",
        [
            "POSTGRES_URL_OVERRIDE",
            "postgresql:///mealie?host=/run/postgresql",
            "postgresql:///mealie?host=/run/postgresql",
        ],
    ),
    (
        "query_params_with_colon",
        [
            "POSTGRES_URL_OVERRIDE",
            "postgresql://user@host/db?sslmode=require&connect_timeout=10",
            "postgresql://user@host/db?sslmode=require&connect_timeout=10",
        ],
    ),
]

psql_cases = [x[1] for x in psql_validation_cases]
psql_cases_ids = [x[0] for x in psql_validation_cases]


@pytest.mark.parametrize("data", psql_cases, ids=psql_cases_ids)
def test_pg_connection_url_encode_password(data, monkeypatch):
    env, value, expected = data
    monkeypatch.setenv("DB_ENGINE", "postgres")
    monkeypatch.setenv(env, value)

    get_app_settings.cache_clear()
    app_settings = get_app_settings()

    pg_provider = app_settings.DB_PROVIDER
    expected = (
        expected
        if expected.startswith("postgresql://")
        else f"postgresql://{pg_provider.POSTGRES_USER}:{expected}@{pg_provider.POSTGRES_SERVER}:5432/{pg_provider.POSTGRES_DB}"
    )

    assert app_settings.DB_URL == expected


@dataclass(slots=True)
class SMTPValidationCase:
    host: str
    port: str
    auth_strategy: str
    from_name: str
    from_email: str
    user: str
    password: str
    is_valid: bool


smtp_validation_cases = [
    (
        "bad_data_tls",
        SMTPValidationCase("", "", "tls", "", "", "", "", False),
    ),
    (
        "bad_data_ssl",
        SMTPValidationCase("", "", "ssl", "", "", "", "", False),
    ),
    (
        "no_auth",
        SMTPValidationCase("email.mealie.io", "25", "none", "Mealie", "mealie@mealie.io", "", "", True),
    ),
    (
        "good_data_tls",
        SMTPValidationCase(
            "email.mealie.io",
            "587",
            "tls",
            "Mealie",
            "mealie@mealie.io",
            "mealie@mealie.io",
            "mealie-password",
            True,
        ),
    ),
    (
        "good_data_ssl",
        SMTPValidationCase(
            "email.mealie.io",
            "465",
            "tls",
            "Mealie",
            "mealie@mealie.io",
            "mealie@mealie.io",
            "mealie-password",
            True,
        ),
    ),
]

smtp_cases = [x[1] for x in smtp_validation_cases]
smtp_cases_ids = [x[0] for x in smtp_validation_cases]


@pytest.mark.parametrize("data", smtp_cases, ids=smtp_cases_ids)
def test_smtp_enable_with_bad_data_tls(data: SMTPValidationCase):
    is_valid = AppSettings.validate_smtp(
        data.host,
        data.port,
        data.from_name,
        data.from_email,
        data.auth_strategy,
        data.user,
        data.password,
    ).enabled

    assert is_valid is data.is_valid


@dataclass(slots=True)
class EnvVar:
    name: str
    value: Any


class LDAPValidationCase:
    settings: list[EnvVar]
    is_valid: bool

    def __init__(
        self,
        enabled: bool,
        server_url: str | None,
        base_dn: str | None,
        is_valid: bool,
    ):
        self.settings = [
            EnvVar("LDAP_AUTH_ENABLED", enabled),
            EnvVar("LDAP_SERVER_URL", server_url),
            EnvVar("LDAP_BASE_DN", base_dn),
        ]
        self.is_valid = is_valid


ldap_validation_cases = [
    ("not enabled", LDAPValidationCase(False, None, None, False)),
    ("missing url", LDAPValidationCase(True, None, "dn", False)),
    ("missing base dn", LDAPValidationCase(True, "url", None, False)),
    ("all good", LDAPValidationCase(True, "url", "dn", True)),
]

ldap_cases = [x[1] for x in ldap_validation_cases]
ldap_cases_ids = [x[0] for x in ldap_validation_cases]


@pytest.mark.parametrize("data", ldap_cases, ids=ldap_cases_ids)
def test_ldap_settings_validation(data: LDAPValidationCase, monkeypatch: pytest.MonkeyPatch):
    for setting in data.settings:
        if setting.value is not None:
            monkeypatch.setenv(setting.name, setting.value)
        else:
            monkeypatch.delenv(setting.name, raising=False)

    get_app_settings.cache_clear()
    app_settings = get_app_settings()

    assert app_settings.LDAP_ENABLED is data.is_valid


class OIDCValidationCase:
    settings: list[EnvVar]
    is_valid: bool

    def __init__(
        self,
        enabled: bool,
        client_id: str | None,
        client_secret: str | None,
        configuration_url: str | None,
        groups_claim: str | None,
        user_group: str | None,
        admin_group: str | None,
        is_valid: bool,
    ):
        self.settings = [
            EnvVar("OIDC_AUTH_ENABLED", enabled),
            EnvVar("OIDC_CLIENT_ID", client_id),
            EnvVar("OIDC_CLIENT_SECRET", client_secret),
            EnvVar("OIDC_CONFIGURATION_URL", configuration_url),
            EnvVar("OIDC_GROUPS_CLAIM", groups_claim),
            EnvVar("OIDC_USER_GROUP", user_group),
            EnvVar("OIDC_ADMIN_GROUP", admin_group),
        ]
        self.is_valid = is_valid


oidc_validation_cases = [
    (
        "not enabled",
        OIDCValidationCase(False, None, None, None, None, None, None, False),
    ),
    (
        "missing client id",
        OIDCValidationCase(True, None, "secret", "url", "groups", "user", "admin", False),
    ),
    (
        "missing client secret",
        OIDCValidationCase(True, "id", None, "url", "groups", "user", "admin", False),
    ),
    (
        "missing url",
        OIDCValidationCase(True, "id", "secret", None, "groups", "user", "admin", False),
    ),
    (
        "all good no groups",
        OIDCValidationCase(True, "id", "secret", "url", None, None, None, True),
    ),
    (
        "all good with groups",
        OIDCValidationCase(True, "id", "secret", "url", "groups", "user", "admin", True),
    ),
]

oidc_cases = [x[1] for x in oidc_validation_cases]
oidc_cases_ids = [x[0] for x in oidc_validation_cases]


@pytest.mark.parametrize("data", oidc_cases, ids=oidc_cases_ids)
def test_oidc_settings_validation(data: OIDCValidationCase, monkeypatch: pytest.MonkeyPatch):
    for setting in data.settings:
        if setting.value is not None:
            monkeypatch.setenv(setting.name, setting.value)
        else:
            monkeypatch.delenv(setting.name, raising=False)

    get_app_settings.cache_clear()
    app_settings = get_app_settings()

    assert app_settings.OIDC_READY is data.is_valid


def test_sensitive_settings_mask(monkeypatch: pytest.MonkeyPatch):
    sensitive_settings = [
        "LDAP_QUERY_PASSWORD",
        "OPENAI_API_KEY",
        "SMTP_USER",
        "SMTP_PASSWORD",
        "OIDC_CLIENT_SECRET",
    ]
    for setting in sensitive_settings:
        monkeypatch.setenv(setting, "super_secret")

    get_app_settings.cache_clear()
    app_settings = get_app_settings()
    settings = app_settings.model_dump()
    settings_json = json.loads(app_settings.model_dump_json())

    for setting in sensitive_settings:
        assert settings[setting] == "*****"
        assert settings_json[setting] == "*****"
