using System.Security.Claims;
using DXPBLL.Auth;

namespace DXPSL.Common;

// Everything a DXP endpoint (or DXPHub) knows about the caller, taken ONLY from validated JWT
// claims (HttpContext.User.Claims after JWT bearer middleware verifies the signature) — never
// from request body/headers/hub-method parameters. See Part 2 of the DXP plan and
// DXPBLL.Auth.DXPClaimTypes.
public class DXPCallerContext
{
    public int    DxpUserId    { get; set; }
    public int    DxpPartyId   { get; set; }
    public int    TenantId     { get; set; }
    public string DatabaseName { get; set; } = string.Empty;
    public byte   DatabaseType { get; set; }
    public int    LocalPartyId { get; set; }
    public string RoleCode     { get; set; } = string.Empty;

    // Shared by DXPBaseEndpoint.GetCaller() and DXPHub's connection lifecycle so both parse the
    // exact same claim set the exact same way.
    public static DXPCallerContext FromClaims(IEnumerable<Claim> claims)
    {
        var dict = claims.ToDictionary(c => c.Type, c => c.Value);

        int GetInt(string key) => dict.TryGetValue(key, out var v) && int.TryParse(v, out var i) ? i : 0;
        byte GetByte(string key) => dict.TryGetValue(key, out var v) && byte.TryParse(v, out var b) ? b : (byte)0;
        string GetStr(string key) => dict.TryGetValue(key, out var v) ? v : string.Empty;

        return new DXPCallerContext
        {
            DxpUserId    = GetInt(DXPClaimTypes.DxpUserId),
            DxpPartyId   = GetInt(DXPClaimTypes.DxpPartyId),
            TenantId     = GetInt(DXPClaimTypes.TenantId),
            DatabaseName = GetStr(DXPClaimTypes.DatabaseName),
            DatabaseType = GetByte(DXPClaimTypes.DatabaseType),
            LocalPartyId = GetInt(DXPClaimTypes.LocalPartyId),
            RoleCode     = GetStr(DXPClaimTypes.RoleCode)
        };
    }
}