# Copyright (c) 2025 Patrick Motsch
# All rights reserved.
"""
Integration tests for RBAC database filtering.
Tests that database queries correctly filter records based on RBAC rules.
Uses real database connection for integration testing.
"""

import pytest
from modules.connectors.connectorDbPostgre import DatabaseConnector
from modules.datamodels.datamodelUam import User, AccessLevel, UserPermissions
from modules.shared.configuration import APP_CONFIG


@pytest.fixture(scope="class")
def db():
    """Create real database connector for integration tests."""
    dbHost = APP_CONFIG.get("DB_HOST", "localhost")
    dbDatabase = APP_CONFIG.get("DB_DATABASE", "poweron_test")
    dbUser = APP_CONFIG.get("DB_USER", "postgres")
    dbPassword = APP_CONFIG.get("DB_PASSWORD", "")
    dbPort = APP_CONFIG.get("DB_PORT", 5432)
    
    db = DatabaseConnector(
        dbHost=dbHost,
        dbDatabase=dbDatabase,
        dbUser=dbUser,
        dbPassword=dbPassword,
        dbPort=dbPort
    )
    yield db
    db.close()


class TestRbacDatabaseFiltering:
    """Test RBAC database filtering."""
    
    def testBuildRbacWhereClauseAllAccess(self, db):
        """Test WHERE clause building for ALL access level."""
        
        permissions = UserPermissions(
            view=True,
            read=AccessLevel.ALL,
            create=AccessLevel.ALL,
            update=AccessLevel.ALL,
            delete=AccessLevel.ALL
        )
        
        user = User(
            id="test_user_all",
            username="testuser",
            roleLabels=["sysadmin"],
        )
        
        whereClause = db.buildRbacWhereClause(permissions, user, "SomeTable")
        
        # ALL access should return None (no filtering)
        assert whereClause is None
    
    def testBuildRbacWhereClauseMyAccess(self, db):
        """Test WHERE clause building for MY access level."""
        
        permissions = UserPermissions(
            view=True,
            read=AccessLevel.MY,
            create=AccessLevel.MY,
            update=AccessLevel.MY,
            delete=AccessLevel.MY
        )
        
        user = User(
            id="test_user_my",
            username="testuser",
            roleLabels=["user"],
        )
        
        whereClause = db.buildRbacWhereClause(permissions, user, "SomeTable")
        
        assert whereClause is not None
        assert whereClause["condition"] == '"sysCreatedBy" = %s'
        assert whereClause["values"] == ["test_user_my"]
    
    def testBuildRbacWhereClauseGroupAccess(self, db):
        """Test WHERE clause building for GROUP access level."""
        
        permissions = UserPermissions(
            view=True,
            read=AccessLevel.GROUP,
            create=AccessLevel.GROUP,
            update=AccessLevel.GROUP,
            delete=AccessLevel.GROUP
        )
        
        mandate_id = "test_mandate_group"
        user = User(
            id="test_user_group",
            username="testuser",
            roleLabels=["admin"],
        )
        
        whereClause = db.buildRbacWhereClause(
            permissions, user, "SomeTable", mandateId=mandate_id
        )
        
        assert whereClause is not None
        assert whereClause["condition"] == '("mandateId" = %s OR "mandateId" IS NULL)'
        assert whereClause["values"] == ["test_mandate_group"]
    
    def testBuildRbacWhereClauseNoAccess(self, db):
        """Test WHERE clause building for NONE access level."""
        
        permissions = UserPermissions(
            view=True,
            read=AccessLevel.NONE,
            create=AccessLevel.NONE,
            update=AccessLevel.NONE,
            delete=AccessLevel.NONE
        )
        
        user = User(
            id="test_user_none",
            username="testuser",
            roleLabels=["viewer"],
        )
        
        whereClause = db.buildRbacWhereClause(permissions, user, "SomeTable")
        
        assert whereClause is not None
        assert whereClause["condition"] == "1 = 0"  # Always false
        assert whereClause["values"] == []
    
    def testBuildRbacWhereClauseUserInDBTable(self, db):
        """Test WHERE clause building for UserInDB table with MY access."""
        
        permissions = UserPermissions(
            view=True,
            read=AccessLevel.MY,
            create=AccessLevel.MY,
            update=AccessLevel.MY,
            delete=AccessLevel.MY
        )
        
        user = User(
            id="test_user_in_db",
            username="testuser",
            roleLabels=["user"],
        )
        
        whereClause = db.buildRbacWhereClause(permissions, user, "UserInDB")
        
        # UserInDB with MY access should filter by id field
        assert whereClause is not None
        assert whereClause["condition"] == '"id" = %s'
        assert whereClause["values"] == ["test_user_in_db"]
    
    def testBuildRbacWhereClauseUserConnectionTable(self, db):
        """GROUP on UserConnection resolves member userIds via UserMandate (multi-tenant)."""
        from modules.datamodels.datamodelUam import UserInDB, Mandate
        from modules.datamodels.datamodelMembership import UserMandate

        testMandateId = "rbac_test_mandate_uc"
        user1Id = "rbac_test_user_uc1"
        user2Id = "rbac_test_user_uc2"
        userMandateIds = []

        try:
            mandate = Mandate(
                id=testMandateId,
                name="rbac-test-mandate-uc",
                label="RBAC test",
            )
            mandatePayload = mandate.model_dump()
            mandatePayload["id"] = mandate.id
            db.recordCreate(Mandate, mandatePayload)

            for uid, uname in (
                (user1Id, "rbac_uc_user1"),
                (user2Id, "rbac_uc_user2"),
            ):
                u = UserInDB(
                    id=uid,
                    username=uname,
                    email=f"{uid}@example.com",
                    hashedPassword="not-used",
                )
                payload = u.model_dump()
                payload["id"] = u.id
                db.recordCreate(UserInDB, payload)

            for uid in (user1Id, user2Id):
                um = UserMandate(userId=uid, mandateId=testMandateId, enabled=True)
                umPayload = um.model_dump()
                umPayload["id"] = um.id
                createdUm = db.recordCreate(UserMandate, umPayload)
                if createdUm and createdUm.get("id"):
                    userMandateIds.append(createdUm["id"])
                else:
                    userMandateIds.append(um.id)

            permissions = UserPermissions(
                view=True,
                read=AccessLevel.GROUP,
                create=AccessLevel.GROUP,
                update=AccessLevel.GROUP,
                delete=AccessLevel.GROUP,
            )

            user = User(
                id=user1Id,
                username="rbac_uc_user1",
                roleLabels=["admin"],
            )

            whereClause = db.buildRbacWhereClause(
                permissions, user, "UserConnection", mandateId=testMandateId
            )

            assert whereClause is not None
            assert whereClause["condition"] != "1 = 0"
            assert "userId" in whereClause["condition"]
            assert "IN" in whereClause["condition"]
            assert set(whereClause["values"]) == {user1Id, user2Id}
        finally:
            for umId in userMandateIds:
                try:
                    db.recordDelete(UserMandate, umId)
                except Exception:
                    pass
            for uid in (user1Id, user2Id):
                try:
                    db.recordDelete(UserInDB, uid)
                except Exception:
                    pass
            try:
                db.recordDelete(Mandate, testMandateId)
            except Exception:
                pass