"""
集成测试: 审核策略是否生效
覆盖: DDL/DML/安全/性能规则 → Redis/MongoDB规则 → 开关控制 → 评分系统
"""
import pytest
from httpx import AsyncClient


def _auth(token: str) -> dict:
    return {"Authorization": f"Bearer {token}"}


async def _setup(admin_token, client):
    """创建测试实例"""
    inst = await client.post("/api/v1/instances", json={
        "name": "审核测试MySQL", "db_type": "mysql",
        "host": "127.0.0.1", "port": 3306,
        "username": "root", "password": "test", "database": "test_db",
        "env": "production",
    }, headers=_auth(admin_token))
    assert inst.status_code == 201
    mysql_id = inst.json()["id"]

    redis = await client.post("/api/v1/instances", json={
        "name": "审核测试Redis", "db_type": "redis",
        "host": "127.0.0.1", "port": 6379,
        "username": "", "password": "test", "database": "0",
        "env": "production",
    }, headers=_auth(admin_token))
    assert redis.status_code == 201
    redis_id = redis.json()["id"]

    return mysql_id, redis_id


async def _audit(client, token, sql, instance_id, database="test_db"):
    return await client.post("/api/v1/tickets/audit", json={
        "sql_content": sql, "instance_id": instance_id, "database": database,
    }, headers=_auth(token))


# ══════════════════════════════════════════════════════════════
# 1. DDL 规则生效验证
# ══════════════════════════════════════════════════════════════

class TestDDLRulesEnforcement:
    async def test_create_table_no_pk(self, client, admin_token):
        mysql_id, _ = await _setup(admin_token, client)
        resp = await _audit(client, admin_token,
            "CREATE TABLE t1 (name VARCHAR(50))", mysql_id)
        assert resp.status_code == 200
        data = resp.json()
        assert data["score"] < 100  # 无主键应该扣分

    async def test_drop_table_production(self, client, admin_token):
        mysql_id, _ = await _setup(admin_token, client)
        resp = await _audit(client, admin_token,
            "DROP TABLE users", mysql_id)
        assert resp.status_code == 200
        data = resp.json()
        assert data["score"] < 80  # DROP TABLE 应该低分

    async def test_truncate_warning(self, client, admin_token):
        mysql_id, _ = await _setup(admin_token, client)
        resp = await _audit(client, admin_token,
            "TRUNCATE TABLE users", mysql_id)
        assert resp.status_code == 200
        # TRUNCATE 应该触发警告或错误
        data = resp.json()
        assert data["score"] < 100

    async def test_float_type_warning(self, client, admin_token):
        mysql_id, _ = await _setup(admin_token, client)
        resp = await _audit(client, admin_token,
            "CREATE TABLE t (id INT PRIMARY KEY, price FLOAT)", mysql_id)
        assert resp.status_code == 200
        data = resp.json()
        assert data["score"] < 100  # FLOAT 类型应扣分


# ══════════════════════════════════════════════════════════════
# 2. DML 规则生效验证
# ══════════════════════════════════════════════════════════════

class TestDMLRulesEnforcement:
    async def test_update_no_where(self, client, admin_token):
        mysql_id, _ = await _setup(admin_token, client)
        resp = await _audit(client, admin_token,
            "UPDATE users SET name='test'", mysql_id)
        assert resp.status_code == 200
        data = resp.json()
        assert data["score"] < 60  # 无WHERE的UPDATE应严重扣分

    async def test_delete_no_where(self, client, admin_token):
        mysql_id, _ = await _setup(admin_token, client)
        resp = await _audit(client, admin_token,
            "DELETE FROM users", mysql_id)
        assert resp.status_code == 200
        data = resp.json()
        assert data["score"] < 60

    async def test_insert_with_where_ok(self, client, admin_token):
        mysql_id, _ = await _setup(admin_token, client)
        resp = await _audit(client, admin_token,
            "UPDATE users SET name='test' WHERE id=1", mysql_id)
        assert resp.status_code == 200
        # 有WHERE的UPDATE应该高分
        assert resp.json()["score"] >= 70


# ══════════════════════════════════════════════════════════════
# 3. 性能规则
# ══════════════════════════════════════════════════════════════

class TestPerformanceRules:
    async def test_select_star(self, client, admin_token):
        mysql_id, _ = await _setup(admin_token, client)
        resp = await _audit(client, admin_token,
            "SELECT * FROM users WHERE id=1", mysql_id)
        assert resp.status_code == 200
        # SELECT * 应该扣分
        assert resp.json()["score"] < 100

    async def test_clean_select(self, client, admin_token):
        mysql_id, _ = await _setup(admin_token, client)
        resp = await _audit(client, admin_token,
            "SELECT id, name FROM users WHERE id=1", mysql_id)
        assert resp.status_code == 200
        assert resp.json()["score"] >= 80

    async def test_join_no_on(self, client, admin_token):
        mysql_id, _ = await _setup(admin_token, client)
        resp = await _audit(client, admin_token,
            "SELECT * FROM users JOIN orders", mysql_id)
        assert resp.status_code == 200
        assert resp.json()["score"] < 100

    async def test_large_in_list(self, client, admin_token):
        mysql_id, _ = await _setup(admin_token, client)
        ids = ",".join(str(i) for i in range(200))
        resp = await _audit(client, admin_token,
            f"SELECT * FROM users WHERE id IN ({ids})", mysql_id)
        assert resp.status_code == 200
        assert resp.json()["score"] < 100


# ══════════════════════════════════════════════════════════════
# 4. Redis 审核规则
# ══════════════════════════════════════════════════════════════

class TestRedisAuditRules:
    async def test_flushall_critical(self, client, admin_token):
        _, redis_id = await _setup(admin_token, client)
        resp = await _audit(client, admin_token, "FLUSHALL", redis_id, "db0")
        assert resp.status_code == 200
        assert resp.json()["risk_level"] in ("high", "critical")

    async def test_flushdb_critical(self, client, admin_token):
        _, redis_id = await _setup(admin_token, client)
        resp = await _audit(client, admin_token, "FLUSHDB", redis_id, "db0")
        assert resp.status_code == 200
        assert resp.json()["risk_level"] in ("high", "critical")

    async def test_keys_pattern_high(self, client, admin_token):
        _, redis_id = await _setup(admin_token, client)
        resp = await _audit(client, admin_token, "KEYS *", redis_id, "db0")
        assert resp.status_code == 200
        assert resp.json()["risk_level"] in ("medium", "high", "critical")

    async def test_get_low_risk(self, client, admin_token):
        _, redis_id = await _setup(admin_token, client)
        resp = await _audit(client, admin_token, "GET mykey", redis_id, "db0")
        assert resp.status_code == 200
        assert resp.json()["risk_level"] in ("low", "medium")

    async def test_config_set_warning(self, client, admin_token):
        _, redis_id = await _setup(admin_token, client)
        resp = await _audit(client, admin_token,
            "CONFIG SET maxmemory 100mb", redis_id, "db0")
        assert resp.status_code == 200


# ══════════════════════════════════════════════════════════════
# 5. 审核评分系统
# ══════════════════════════════════════════════════════════════

class TestAuditScoring:
    async def test_clean_sql_high_score(self, client, admin_token):
        mysql_id, _ = await _setup(admin_token, client)
        resp = await _audit(client, admin_token,
            "SELECT id, name FROM users WHERE id=1 LIMIT 10", mysql_id)
        assert resp.status_code == 200
        assert resp.json()["score"] >= 80

    async def test_dangerous_sql_low_score(self, client, admin_token):
        mysql_id, _ = await _setup(admin_token, client)
        resp = await _audit(client, admin_token,
            "DELETE FROM users", mysql_id)
        assert resp.status_code == 200
        assert resp.json()["score"] < 60

    async def test_score_between_0_100(self, client, admin_token):
        mysql_id, _ = await _setup(admin_token, client)
        for sql in ["SELECT 1", "DROP TABLE t", "UPDATE t SET a=1",
                     "SELECT * FROM t WHERE id=1"]:
            resp = await _audit(client, admin_token, sql, mysql_id)
            assert resp.status_code == 200
            score = resp.json()["score"]
            assert 0 <= score <= 100, f"Score {score} out of range for: {sql}"


# ══════════════════════════════════════════════════════════════
# 6. 审核规则 CRUD + 开关
# ══════════════════════════════════════════════════════════════

class TestAuditRuleManagement:
    async def test_list_rules(self, client, admin_token):
        resp = await client.get("/api/v1/audit-rules",
                                 headers=_auth(admin_token))
        assert resp.status_code == 200
        rules = resp.json()
        assert isinstance(rules, list)
        assert len(rules) > 0  # 应有种子数据

    async def test_create_and_toggle_rule(self, client, admin_token):
        # 创建自定义规则
        resp = await client.post("/api/v1/audit-rules", json={
            "rule_id": "custom_test_001",
            "name": "自定义测试规则",
            "type": "DML",
            "severity": "warning",
            "enabled": True,
            "description": "集成测试用规则",
        }, headers=_auth(admin_token))
        assert resp.status_code in (200, 201)
        rule_id = resp.json().get("id")

        if rule_id:
            # 禁用规则
            resp2 = await client.put(f"/api/v1/audit-rules/{rule_id}", json={
                "enabled": False,
            }, headers=_auth(admin_token))
            assert resp2.status_code == 200

            # 重新启用
            resp3 = await client.put(f"/api/v1/audit-rules/{rule_id}", json={
                "enabled": True,
            }, headers=_auth(admin_token))
            assert resp3.status_code == 200

    async def test_rule_type_filter(self, client, admin_token):
        for rule_type in ["DDL", "DML", "security", "performance"]:
            resp = await client.get(f"/api/v1/audit-rules?type={rule_type}",
                                     headers=_auth(admin_token))
            assert resp.status_code == 200

    async def test_rules_stats(self, client, admin_token):
        resp = await client.get("/api/v1/audit-rules/stats",
                                 headers=_auth(admin_token))
        # stats 可能存在也可能不存在
        assert resp.status_code in (200, 404)