using GB5Shared.DTO.Framework.Login;
using Newtonsoft.Json;

namespace CMSBLL.Common;

// Shared by every BLL that composes data for an anonymous, domain-resolved public request
// (SiteDocumentBLL, DataSourceProxyBLL) — the caller's own LoginDTO.ClientId has no necessary
// relationship to the tenant that owns the resolved Site (the caller may have no login context
// at all, or may be a service account shared across every tenant), so every tenant-filtered
// query these flows make must run against a login carrying the domain-resolved TenantId, never
// the caller's original ClientId. See SiteDocumentBLL.ComposeAsync's original doc comment for
// the bug this fixed.
public static class LoginTenantRebase
{
    // JSON round-trip rather than a hand-picked field list — LoginDTO has ~80 properties and
    // QueryExecutor's exact connection-resolution needs aren't all enumerated here; cloning
    // everything serializable and then overriding just ClientId is the only way to be sure
    // DatabaseName/DatabaseType/etc. all survive intact. LoginDTO's few [JsonIgnore] fields are
    // WIP-callback-only state, irrelevant to this read-only composition.
    public static LoginDTO RebaseTenant(LoginDTO original, int tenantId)
    {
        var clone = JsonConvert.DeserializeObject<LoginDTO>(JsonConvert.SerializeObject(original))
            ?? new LoginDTO();
        clone.ClientId = tenantId;
        return clone;
    }
}