//! RBAC Management API tests
//!
//! Tests for role and permission management REST endpoints

// ============================================================================
// Test 1: Role Management Endpoints
// ============================================================================

/// Test creating a new role
#[test]
fn test_create_role_success() {
    // POST /api/roles with valid CreateRoleRequest should return 201 Created
    // Response should include role ID, name, permissions, created_at timestamp
}

/// Test creating role with empty name should fail
#[test]
fn test_create_role_empty_name() {
    // POST /api/roles with empty name should return 400 Bad Request
}

/// Test creating duplicate role should fail
#[test]
fn test_create_role_duplicate() {
    // Creating role with same name twice should return 409 Conflict
}

/// Test listing all roles
#[test]
fn test_list_roles_success() {
    // GET /api/roles should return 200 OK with array of RoleDto
    // Should include pagination support (limit, offset)
}

/// Test listing roles with pagination
#[test]
fn test_list_roles_with_pagination() {
    // GET /api/roles?limit=10&offset=5 should respect pagination parameters
}

/// Test getting role by ID
#[test]
fn test_get_role_success() {
    // GET /api/roles/{role_id} should return 200 OK with RoleDto
}

/// Test getting non-existent role
#[test]
fn test_get_role_not_found() {
    // GET /api/roles/{non_existent_id} should return 404 Not Found
}

/// Test updating role details
#[test]
fn test_update_role_success() {
    // PUT /api/roles/{role_id} with updated name/description should return 200
    // Should update updated_at timestamp
}

/// Test updating role preserves permissions unless explicitly changed
#[test]
fn test_update_role_preserves_permissions() {
    // PUT /api/roles/{role_id} without permissions field should keep existing permissions
}

/// Test deleting a role
#[test]
fn test_delete_role_success() {
    // DELETE /api/roles/{role_id} should return 204 No Content
}

/// Test deleting role in use should fail
#[test]
fn test_delete_role_in_use() {
    // DELETE /api/roles/{role_id} when users have this role should return 409 Conflict
    // With message about active assignments
}

// ============================================================================
// Test 2: Permission Management Endpoints
// ============================================================================

/// Test creating a new permission
#[test]
fn test_create_permission_success() {
    // POST /api/permissions with valid CreatePermissionRequest should return 201 Created
    // Response should include permission ID, resource, action, created_at
}

/// Test creating permission with invalid resource format
#[test]
fn test_create_permission_invalid_resource() {
    // Resource should follow format "resource:action" or similar
    // Invalid format should return 400 Bad Request
}

/// Test creating duplicate permission should fail
#[test]
fn test_create_permission_duplicate() {
    // Creating permission with same resource:action twice should return 409 Conflict
}

/// Test listing all permissions
#[test]
fn test_list_permissions_success() {
    // GET /api/permissions should return 200 OK with array of PermissionDto
}

/// Test filtering permissions by resource
#[test]
fn test_list_permissions_filter_by_resource() {
    // GET /api/permissions?resource=query should return only query permissions
}

/// Test getting permission by ID
#[test]
fn test_get_permission_success() {
    // GET /api/permissions/{permission_id} should return 200 OK with PermissionDto
}

/// Test getting non-existent permission
#[test]
fn test_get_permission_not_found() {
    // GET /api/permissions/{non_existent_id} should return 404 Not Found
}

/// Test deleting a permission
#[test]
fn test_delete_permission_success() {
    // DELETE /api/permissions/{permission_id} should return 204 No Content
}

/// Test deleting permission in use should fail
#[test]
fn test_delete_permission_in_use() {
    // DELETE /api/permissions/{permission_id} when roles use it should return 409 Conflict
}

// ============================================================================
// Test 3: User-Role Assignment Endpoints
// ============================================================================

/// Test assigning a role to a user
#[test]
fn test_assign_role_success() {
    // POST /api/user-roles with valid AssignRoleRequest should return 201 Created
    // Should create UserRoleDto with assigned_at timestamp
}

/// Test assigning non-existent role should fail
#[test]
fn test_assign_role_not_found() {
    // POST /api/user-roles with invalid role_id should return 404 Not Found
}

/// Test assigning role twice should fail
#[test]
fn test_assign_role_duplicate() {
    // Assigning same role to same user twice should return 409 Conflict
}

/// Test listing user-role assignments
#[test]
fn test_list_user_roles_success() {
    // GET /api/user-roles should return 200 OK with array of UserRoleDto
}

/// Test filtering user-roles by `user_id`
#[test]
fn test_list_user_roles_filter_by_user() {
    // GET /api/user-roles?user_id={user_id} should return only that user's roles
}

/// Test filtering user-roles by `role_id`
#[test]
fn test_list_user_roles_filter_by_role() {
    // GET /api/user-roles?role_id={role_id} should return only that role's users
}

/// Test revoking a role from a user
#[test]
fn test_revoke_role_success() {
    // DELETE /api/user-roles/{user_id}/{role_id} should return 204 No Content
}

/// Test revoking non-existent assignment should fail
#[test]
fn test_revoke_role_not_found() {
    // DELETE /api/user-roles/{user_id}/{role_id} when assignment doesn't exist should return 404
}

// ============================================================================
// Test 4: Audit Endpoints
// ============================================================================

/// Test querying permission access audit logs
#[test]
fn test_query_permission_audit_success() {
    // GET /api/audit/permissions should return 200 OK with array of audit events
}

/// Test filtering audit logs by `user_id`
#[test]
fn test_query_permission_audit_filter_by_user() {
    // GET /api/audit/permissions?user_id={user_id} should return only that user's accesses
}

/// Test filtering audit logs by permission
#[test]
fn test_query_permission_audit_filter_by_permission() {
    // GET /api/audit/permissions?permission_id={perm_id} should return only that permission's
    // accesses
}

/// Test filtering audit logs by time range
#[test]
fn test_query_permission_audit_filter_by_time() {
    // GET /api/audit/permissions?start_time={iso}&end_time={iso} should return events in range
}

/// Test filtering audit logs by status
#[test]
fn test_query_permission_audit_filter_by_status() {
    // GET /api/audit/permissions?status=denied should return only denied accesses
}

/// Test audit pagination
#[test]
fn test_query_permission_audit_pagination() {
    // GET /api/audit/permissions?limit=20&offset=40 should respect pagination
}

// ============================================================================
// Test 5: Authorization & Access Control
// ============================================================================

/// Test creating role requires admin permission
#[test]
fn test_create_role_requires_admin() {
    // POST /api/roles without admin:write permission should return 403 Forbidden
}

/// Test listing roles doesn't require special permission
#[test]
fn test_list_roles_no_special_permission() {
    // GET /api/roles should work for authenticated users
}

/// Test modifying role requires admin permission
#[test]
fn test_update_role_requires_admin() {
    // PUT /api/roles/{role_id} without admin:write should return 403 Forbidden
}

/// Test deleting role requires admin permission
#[test]
fn test_delete_role_requires_admin() {
    // DELETE /api/roles/{role_id} without admin:write should return 403 Forbidden
}

/// Test querying audit logs requires audit:read permission
#[test]
fn test_query_audit_requires_permission() {
    // GET /api/audit/permissions without audit:read should return 403 Forbidden
}

// ============================================================================
// Test 6: Multi-Tenancy
// ============================================================================

/// Test creating role respects `tenant_id`
#[test]
fn test_create_role_respects_tenant() {
    // Role created in tenant A should not be visible to tenant B
}

/// Test listing roles filters by tenant
#[test]
fn test_list_roles_filters_by_tenant() {
    // GET /api/roles should only return roles for current tenant
}

/// Test user-role assignment respects tenant
#[test]
fn test_assign_role_respects_tenant() {
    // Cannot assign role from tenant A to user in tenant B
}

/// Test audit logs filter by tenant
#[test]
fn test_audit_logs_filter_by_tenant() {
    // GET /api/audit/permissions should only return events for current tenant
}

// ============================================================================
// Test 7: Error Handling & Validation
// ============================================================================

/// Test invalid JSON in request body returns 400
#[test]
fn test_invalid_json_request() {
    // POST /api/roles with malformed JSON should return 400 Bad Request
}

/// Test missing required fields returns 400
#[test]
fn test_missing_required_fields() {
    // POST /api/roles without required 'name' field should return 400
}

/// Test invalid permission resource format returns 400
#[test]
fn test_invalid_permission_format() {
    // POST /api/permissions with malformed resource:action should return 400
}

/// Test concurrent role creation handles race conditions
#[test]
fn test_concurrent_role_creation() {
    // Multiple simultaneous creates of same role should fail gracefully
    // One should succeed, others should return 409 Conflict
}

/// Test cascade behavior when deleting with dependents
#[test]
fn test_cascade_delete_protection() {
    // DELETE /api/roles/{role_id} with active users should refuse
    // Suggest cascade delete or revoking assignments first
}

// ============================================================================
// Test 8: API Consistency
// ============================================================================

/// Test all endpoints return consistent error format
#[test]
fn test_consistent_error_format() {
    // All error responses should have structure: {error: "message", code: "ERROR_CODE"}
}

/// Test all endpoints return consistent timestamp format (ISO 8601)
#[test]
fn test_consistent_timestamp_format() {
    // All created_at, updated_at, assigned_at should be ISO 8601 UTC
}

/// Test all list endpoints support pagination
#[test]
fn test_all_list_endpoints_support_pagination() {
    // GET /api/roles, /api/permissions, /api/user-roles should all support limit/offset
}

/// Test all create endpoints return the created resource
#[test]
fn test_create_endpoints_return_resource() {
    // POST /api/roles, /api/permissions, /api/user-roles should return full DTO
}

// ── db_backend_tests ──────────────────────────────────────────────────────────

mod db_backend_tests {
    #![allow(clippy::unwrap_used)] // Reason: test code, panics acceptable
    #![allow(clippy::cast_precision_loss)] // Reason: test metrics reporting
    #![allow(clippy::cast_sign_loss)] // Reason: test data uses small positive integers
    #![allow(clippy::cast_possible_truncation)] // Reason: test data values are bounded
    #![allow(clippy::cast_possible_wrap)] // Reason: test data values are bounded
    #![allow(clippy::missing_panics_doc)] // Reason: test helpers
    #![allow(clippy::missing_errors_doc)] // Reason: test helpers
    #![allow(missing_docs)] // Reason: test code
    #![allow(clippy::items_after_statements)] // Reason: test helpers defined near use site

    use super::super::db_backend::*;

    #[test]
    fn test_parse_permission_valid() {
        let (resource, action) = parse_permission("content:write").unwrap();
        assert_eq!(resource, "content");
        assert_eq!(action, "write");
    }

    #[test]
    fn test_parse_permission_wildcard() {
        let (resource, action) = parse_permission("*:*").unwrap();
        assert_eq!(resource, "*");
        assert_eq!(action, "*");
    }

    #[test]
    fn test_parse_permission_invalid() {
        assert!(
            matches!(parse_permission("no_colon"), Err(RbacDbError::QueryError(_))),
            "expected QueryError for permission without colon, got: {:?}",
            parse_permission("no_colon")
        );
    }

    #[test]
    fn test_rbac_db_error_display() {
        assert_eq!(format!("{}", RbacDbError::RoleNotFound), "Role not found");
        assert_eq!(format!("{}", RbacDbError::RoleDuplicate), "Role already exists");
    }
}

#[cfg(test)]
#[allow(clippy::unwrap_used)] // Reason: test code; pool ctor errors must panic to surface test setup failures
mod router_construction {
    //! See `crates/fraiseql-server/src/observers/routes.rs::tests` for context:
    //! axum validates path-capture syntax inside `Router::route`, so any
    //! lingering `:param` literal panics here at build time (issue #316).

    use std::sync::Arc;

    use sqlx::PgPool;

    use crate::api::rbac_management::{
        RbacManagementState, db_backend::RbacDbBackend, rbac_management_router,
    };

    fn lazy_pool() -> PgPool {
        PgPool::connect_lazy("postgres://test:test@localhost/test").unwrap()
    }

    #[tokio::test]
    async fn rbac_router_constructs() {
        let state = RbacManagementState {
            db: Arc::new(RbacDbBackend::new(lazy_pool())),
        };
        let _ = rbac_management_router(state);
    }
}
