from libcpp.string cimport string
import cython
cimport cython

from libcpp.vector cimport vector

cimport AbstractState

# Default string in Python 3.x is a unicode string (type str)
# Default string in Python 2.x is a byte string(type bytes) 
#
# Create a fused type that allows for either unicode string or bytestring
# We encode unicode strings using the ASCII encoding since we know they are all
# ASCII strings 
ctypedef fused string_like:
    cython.bytes
    cython.unicode
        
# cdef extern from "CoolPropDLL.h":
#     int _set_reference_stateS "set_reference_stateS"(char *, char *)
#     int _set_reference_stateD "set_reference_stateD"(char *, double T, double rho, double h0, double s0)
#     int _get_standard_unit_system "get_standard_unit_system"()
    
cdef extern from "CoolPropTools.h" namespace "CoolProp":
    bint _ValidNumber "ValidNumber"(double)
    
cdef extern from "CoolProp.h" namespace "CoolProp":
    double _PropsSI "CoolProp::PropsSI"(string Output, string Name1, double Prop1, string Name2, double Prop2, string FluidName) 
    vector[double] _PropsSI "CoolProp::PropsSI"(string Output, string Name1, vector[double] Prop1, string Name2, vector[double] Prop2, string FluidName, vector[double] fractions)
    string _get_global_param_string "CoolProp::get_global_param_string"(string ParamName)
    
#     double _Props1SI "Props1SI"(string Ref, string Output)
    
#     double _IProps "IProps"(long Output, long Name1, double Prop1, long Name2, double Prop2, long Ref)
    
#     double _Props "Props"(string Output, string Name1, double Prop1, string Name2, double Prop2, string Ref)
#     double _Props1 "Props1"(string Ref, string Output)
    
#     string _get_fluid_param_string "get_fluid_param_string"(string ParamName, string FluidName)
    
#     long _set_phase "set_phase" (string phase)
#     long _get_Fluid_index "get_Fluid_index" (string Fluid)
    long _get_parameter_index "get_parameter_index" (string param)
#     
#     string _add_REFPROP_fluid "add_REFPROP_fluid"(string FluidName) except +
#     
#     int _get_debug_level "get_debug_level"()
#     void _set_debug_level "set_debug_level"(int level)
#     
#     string _get_BibTeXKey "get_BibTeXKey"(string Ref, string key)
    
    # Convenience functions
#     int _IsFluidType "IsFluidType"(char* Ref, char* Type)
        
# cdef extern from "HumidAirProp.h":
#     double _HAProps "HAProps"(char *OutputName, char *Input1Name, double Input1, char *Input2Name, double Input2, char *Input3Name, double Input3)
#     double _HAProps_Aux "HAProps_Aux"(char* Name,double T, double p, double W, char *units)
#     double _cair_sat "cair_sat"(double T)
       
cdef class State:
    cdef AbstractState.AbstractState pAS
    cdef readonly string Fluid, phase
    cdef int iFluid,iParam1,iParam2,iOutput
    cdef double T_, rho_, p_
    cdef readonly bint is_CPFluid
    
    cpdef set_Fluid(self, string Fluid, string backend)
#     cpdef speed_test(self, int N)
#     cpdef update(self, dict params)
#     cpdef update_ph(self, double p, double h)
    cpdef update_Trho(self, double T, double rho)
#     cpdef State copy(self)
#     cpdef double Props(self, long iOutput) except *
#     cpdef long Phase(self) except *
    
#     cpdef double get_Q(self) except *
#     cpdef double get_T(self) except *
#     cpdef double get_p(self) except *
#     cpdef double get_h(self) except *
#     cpdef double get_rho(self) except *
#     cpdef double get_s(self) except *
#     cpdef double get_u(self) except *
#     cpdef double get_visc(self) except *
#     cpdef double get_cond(self) except *
#     cpdef double get_cp(self) except *
#     cpdef double get_cp0(self) except *
#     cpdef double get_cv(self) except *
#     cpdef double get_MM(self) except *
#     cpdef double get_dpdT(self) except *
#     cpdef double get_speed_sound(self) except *
#     cpdef get_Tsat(self, double Q = *)
#     cpdef get_subcooling(self)
#     cpdef get_superheat(self)cdef class State:
#     cdef CoolPropStateClassSI CPS
#     cdef readonly string Fluid, phase
#     cdef int iFluid,iParam1,iParam2,iOutput
#     cdef double T_, rho_, p_
#     cdef readonly bint is_CPFluid
#     
#     cpdef set_Fluid(self, string_like Fluid)
    cpdef speed_test(self, int N)
#     cpdef update(self, dict params)
#     cpdef update_ph(self, double p, double h)
#     cpdef update_Trho(self, double T, double rho)
#     cpdef State copy(self)
#     cpdef double Props(self, long iOutput) except *
#     cpdef long Phase(self) except *
#     
#     cpdef double get_Q(self) except *
#     cpdef double get_T(self) except *
#     cpdef double get_p(self) except *
#     cpdef double get_h(self) except *
#     cpdef double get_rho(self) except *
#     cpdef double get_s(self) except *
#     cpdef double get_u(self) except *
#     cpdef double get_visc(self) except *
#     cpdef double get_cond(self) except *
#     cpdef double get_cp(self) except *
#     cpdef double get_cp0(self) except *
#     cpdef double get_cv(self) except *
#     cpdef double get_MM(self) except *
#     cpdef double get_dpdT(self) except *
#     cpdef double get_speed_sound(self) except *
#     cpdef get_Tsat(self, double Q = *)
#     cpdef get_subcooling(self)
#     cpdef get_superheat(self)