# 1 "/mnt/c/Projects/VSIM/SimulationCore2/Redis/Redis_Interface.f90"
Module RedisInterface
! use iso_c_binding, only: c_char
    Interface
        SUBROUTINE addnums(a, b) BIND(C,name='addnums')
            USE, INTRINSIC :: ISO_C_BINDING, ONLY: C_INT
            IMPLICIT NONE
            INTEGER(C_INT) :: a, b
        END SUBROUTINE addnums

        SUBROUTINE initConnection_C(address,port,password,datakey,status) BIND(C, name='initConnection')
            use iso_c_binding, only: c_char,c_int
            character(kind=c_char) :: address(*)
            integer(kind=c_int)::port,status
            character(kind=c_char) :: password(*),datakey(*)
        END SUBROUTINE initConnection_C
        
        SUBROUTINE setData_C(part,str) BIND(C,name='setData')
            use iso_c_binding, only: c_char
            character(kind=c_char) :: str(*)
            character(kind=c_char) :: part(*)
        END SUBROUTINE setData_C

        FUNCTION getData_C(len) BIND(C,name='getData')
            use iso_c_binding, only: c_ptr,c_int
            integer(kind=c_int)::len
            type(c_ptr) :: getData_C
        END FUNCTION getData_C

        SUBROUTINE deallocateData() BIND(C, name='deallocData')
        END SUBROUTINE deallocateData

    End Interface

    contains

    SUBROUTINE initConnection(address,port,password, datakey,status)
        use iso_c_binding, only: c_null_char,c_char
! use json_module
        character(len=*) :: password,address,datakey
        integer::port,status
        character(len=:),allocatable::c_address,c_password,c_datakey
! type(json_file)            :: jsonfile
! type(json_value),pointer :: jsonvalue,jsonvalue2
! type(json_core) :: jsoncore

! call jsonfile%initialize()
! print *,"Initilized: simulation with ",configFilename
! call jsonfile%load_file(configFilename);
! if (jsonfile%failed()) then
!     print *,"can not open config file: ",configFilename ;
!     stop
! endif
! ! print *,"file read"
! call jsonfile%json_file_get_root(jsonvalue)
! call jsoncore%get(jsonvalue,'redis',jsonvalue2)
! call jsoncore%get(jsonvalue2,"address",address);
! call jsoncore%get(jsonvalue2,"port",port);
! call jsoncore%get(jsonvalue2,"password",password);
! call jsoncore%get(jsonvalue2,"datakey",datakey);

        c_datakey = datakey//c_null_char
        c_password = password//c_null_char
        c_address = address//c_null_char
        call initConnection_C(c_address,port,c_password,c_datakey,status)
! print *,"returned to initConnection"
    END SUBROUTINE initConnection

    SUBROUTINE setData(str)
            use SimulationVariables
            use iso_c_binding, only: c_null_char
            character(len=*):: str
            character(len=len_trim(str)+1)::c_str
            character(len=4)::part
            part = "out"//c_null_char
            c_str = str//c_null_char
            if(logging>4) print *,"setting Data: ",len_trim(str)
            call setData_C(part,c_str)
    END SUBROUTINE setData

    SUBROUTINE setInput(str)
        use SimulationVariables
        use iso_c_binding, only: c_null_char
        character(len=*):: str
        character(len=len_trim(str)+1)::c_str
        character(len=4)::part
        part = "in"//c_null_char
        c_str = str//c_null_char
        if(logging>4) print *,"setting Data: ",len_trim(str)
        call setData_C(part,c_str)
    END SUBROUTINE setInput

    SUBROUTINE getData(string)
        use iso_c_binding, only: c_char,c_ptr,c_f_pointer,c_null_ptr
! character(:),allocatable :: getData2
        character(:),allocatable :: string
        integer :: string_shape(1)
        type(c_ptr) :: c_string
        integer::l
        l = 30000
! print *,"reading data l=",l
        c_string = getData_C(l)
! print *,"data read. l=",l
! len = int(c_len,kind=kind(len))
        string_shape(1) =   l!int(l,kind=kind(Integer))
        if(.not. allocated(string)) then
            print *,"allocate string"
            allocate(character(l) :: string)
        endif
        call c_f_pointer(c_string, string, string_shape)
        c_string=c_null_ptr
        string = trim(string)
! print *,len_trim(string), "chars read."
! print *,string(1:l)
! getData2=string
    END SUBROUTINE getData

! SUBROUTINE getData2(string) !result(string)
!     use iso_c_binding, only: c_char,c_ptr,c_f_pointer,c_null_ptr
!     ! character(:),allocatable :: getData2
!     character(:),allocatable :: string
!     integer :: string_shape(1)
!     type(c_ptr) :: c_string
!     integer::l
!     ! print *,"reading data (getData2)"
!     c_string = getData_C(l)
!     ! string = c_str
!     ! len = int(c_len,kind=kind(len))
!     string_shape(1) =  l! int(l,kind=kind(integer))
!     if(.not. allocated(string)) allocate(character(l) :: string)
!     call c_f_pointer(c_string, string, string_shape)
!     c_string=c_null_ptr
!     ! print *,len_trim(string), "chars read."
!     ! print *,string(1:l)
!     ! getData2=string
! END SUBROUTINE getData2

END Module RedisInterface