library dyAuth;

{ Important note about DLL memory management: ShareMem must be the
  first unit in your library's USES clause AND your project's (select
  Project-View Source) USES clause if your DLL exports any procedures or
  functions that pass strings as parameters or function results. This
  applies to all strings passed to and from your DLL--even those that
  are nested in records and classes. ShareMem is the interface unit to
  the BORLNDMM.DLL shared memory manager, which must be deployed along
  with your DLL. To avoid using BORLNDMM.DLL, pass string information
  using PChar or ShortString parameters.

  Important note about VCL usage: when this DLL will be implicitly
  loaded and this DLL uses TWicImage / TImageCollection created in
  any unit initialization section, then Vcl.WicImageInit must be
  included into your library's USES clause. }

uses
  System.SysUtils,
  System.Classes,
  IdHTTP,
  IdSSLOpenSSL,
  DateUtils,
  Neon.Core.Attributes in 'Neon.Core.Attributes.pas',
  Neon.Core.DynamicTypes in 'Neon.Core.DynamicTypes.pas',
  Neon.Core.Nullables in 'Neon.Core.Nullables.pas',
  Neon.Core.Persistence.JSON in 'Neon.Core.Persistence.JSON.pas',
  Neon.Core.Persistence in 'Neon.Core.Persistence.pas',
  Neon.Core.Persistence.Swagger in 'Neon.Core.Persistence.Swagger.pas',
  Neon.Core.Serializers.DB in 'Neon.Core.Serializers.DB.pas',
  Neon.Core.Serializers.RTL in 'Neon.Core.Serializers.RTL.pas',
  Neon.Core.Serializers.VCL in 'Neon.Core.Serializers.VCL.pas',
  Neon.Core.TypeInfo in 'Neon.Core.TypeInfo.pas',
  Neon.Core.Types in 'Neon.Core.Types.pas',
  Neon.Core.Utils in 'Neon.Core.Utils.pas',
  U_CommonData in 'U_CommonData.pas';

{$R *.res}

function UnixMillisecondsToTDateTime(UnixTimeStampMS: Int64): TDateTime;
begin
  // 将毫秒转换为秒，然后使用标准转换函数
  Result := UnixToDateTime(UnixTimeStampMS div 1000);

  // 添加剩余的毫秒部分
  // TDateTime中1天=86400秒，1秒=1000毫秒
  // 所以1毫秒 = 1/86400000 天
  Result := Result + (UnixTimeStampMS mod 1000) / 86400000.0;

  // 备注：也可以使用完整公式直接转换
  // Result := UnixTimeStampMS / 86400000.0 + 25569.0;
end;

function InternalPerformHttpPost(const AUrl: string; const printerUniqueCode: string; out AResponse: string): Boolean;
var
  HTTP: TIdHTTP;
  RequestList: TStringList; // 请求信息
begin
  Result := False;
  AResponse := '';
  HTTP := TIdHTTP.Create(nil);
  RequestList := TStringList.Create;
  try
    // 配置HTTP组件
    HTTP.HTTPOptions := HTTP.HTTPOptions + [hoForceEncodeParams];
    HTTP.Request.UserAgent := 'Delphi HTTP Client DLL';

    RequestList.Add('printerUniqueCode=' + printerUniqueCode);
    try
      AResponse := HTTP.Post(AUrl, RequestList);
      Result := True;
    except
      on E: Exception do
        AResponse := 'HTTP POST Error: ' + E.Message;
    end;
  finally
    HTTP.Free;
    RequestList.Free;
  end;
end;

function CheckPrinterAuth(const printerUniqueCode: PWideChar; out AResponse: TCheckResult): Boolean; stdcall;
var
  UrlStr, ResponseStr: string;
  ResByteArray: TByteArray;
  Response: THttpResponse;

  printerClient: TPrinterClient;
  ch: String;
  index: Integer;
begin
  Result := False;

  UrlStr := 'http://192.168.1.44:18652/apis0/authorize/checkPrinterPerms';
  if InternalPerformHttpPost(UrlStr, string(printerUniqueCode), ResponseStr) then begin
    Response := TNeon.JSONToObject<THttpResponse>(ResponseStr);
    try
      if Response.httpCode = 200 then begin
        printerClient := TNeon.JSONToObject<TPrinterClient>(Response.data);
        try
          AResponse.expireDate := printerClient.authorizeDateLong;
          AResponse.remainDays := DaysBetween(Now, UnixMillisecondsToTDateTime(AResponse.expireDate));

          index := 0;
          for ch in printerClient.permissions do begin
            AResponse.permissions[index] := StrToInt(ch);
            Inc(index);
          end;

        finally
          printerClient.Free;
        end;
      end
      else begin
        Result := False;
        Exit;
      end;

      Result := True;
    finally
      Response.Free;
    end;
  end
  else begin
    Result := False;
  end;
end;

function TestExport(const i: Integer): TCheckResult; stdcall;
begin
  Result.remainDays := i;
  Result.expireDate := 1000;
  Result.permissions[0] := 0;
  Result.permissions[1] := 1;
  Result.permissions[2] := 2;
  Result.permissions[3] := 3;
  Result.permissions[4] := 4;
end;

// 导出函数列表
exports
  CheckPrinterAuth, TestExport;

begin
  WriteLn('Testing HTTP Client DLL...');
  // 测试URL，可替换为其他有效地址
  var
  Url := 'http://192.168.1.44:18652/apis0/authorize/checkPrinterPerms';
  var
  uniqueCode := 'aaa';
  var
    Response: string;
  if InternalPerformHttpPost(Url, uniqueCode, Response) then begin
    WriteLn('Success:');
    WriteLn(Response);
  end
  else begin
    WriteLn('Failed:');
    WriteLn(Response);
  end;
  WriteLn('Press Enter to exit...');
  ReadLn; // 等待用户按键，以便查看输出

end.