module gnpy-eqpt-config {
  yang-version 1;
  namespace "gnpy:gnpy-eqpt-config";

  prefix "gnpyeqpt";

  organization
    "Telecom Infra Project OOPT PSE
     Working Group";

  contact
    "WG Web:   <https://github.com/Telecominfraproject/oopt-gnpy>
     contact:  <mailto:ahmed.triki@orange.com>
     contact:  <mailto:esther.lerouzic@orange.com>
   ";

  description "Base YANG model for gnpy equipment library input for path computation - 2020 - candi preversion";

  revision "2020-10-22" {
    description "draft for experimental/2020-candi";
    reference "Base YANG model for equipment library input for path computation with gnpy";
  }

  /*
   * Identities


  identity edfa-type-def {
    description "base identity for variable gain and fixed gain";
  }

  identity variable-gain{
    base edfa-type-def ;
    description "'variable_gain' is a simplified model simulating a 2-coil 
      EDFA with internal, input and output VOAs. The NF vs gain response is calculated 
      accordingly based on the input parameters: nf_min, nf_max, and gain_flatmax. It 
      is not a simple interpolation but a 2-stage NF calculation.";
  }

  identity fixed-gain{
    base edfa-type-def ;
    description "'fixed_gain' is a fixed gain model. NF == Cte == nf0 if gain_min < gain < gain_flatmax";
  }

  identity fiber-variety {
    description "base identity for fiber variety";
  }

  identity transceiver-variety {
    description "base identity for transceiver variety";
  }

  */
  grouping variable-gain {
    leaf nf_min {
      type decimal64 {
        fraction-digits 2;
      }
      units dB;
    }
    leaf nf_max {
      type decimal64 {
        fraction-digits 2;
      }
      units dB;
    }
    leaf out_voa_auto{
      type boolean ;
      description "auto_design feature to optimize the amplifier output VOA. If true, output VOA is present 
      and will be used to push amplifier gain to its maximum, within EOL power margins.";
    }
  }

  grouping fixed-gain{
    leaf nf0 {
      type decimal64 {
        fraction-digits 2;
      }
      units dB;
    }
  }

  grouping no-type-def{
    leaf advanced_config_from_json {
      type string ;
      description " filename with json edfa";
      
    }
  }
  

  grouping openroadm{
    leaf-list nf_coef {
      type decimal64 {
        fraction-digits 5;
      }
      //default [8.1e-4,6.142e-2,1.558,19.97] ;
    }
  }

  grouping dual-stage {
    leaf raman {
      type boolean;
    }
    leaf preamp_variety {
      type leafref {
          path "../../Edfa/type_variety";
        }
    }
    leaf booster_variety {
      type leafref {
          path "../../Edfa/type_variety";
        }
    }
  }

  grouping edfa-common {
    leaf allowed_for_design{
      type boolean ;
      description "If false, the amplifier will not be picked by auto-design but it can still be used as a 
      manual input (from JSON or Excel template topology files.)";
    }
    leaf gain_flatmax {
      type decimal64 {
        fraction-digits 2;
      }
      units dB;
    }
    leaf gain_min {
      type decimal64 {
        fraction-digits 2;
      }
      units dB;
    }
    leaf p_max {
      type decimal64 {
        fraction-digits 2;
      }
      units dBm;
    }
    leaf type_def {
      type identityref{
        base edfa-type-def ;
      }
    }
    choice type_of_model {
      case variable-gain {
        when "type_def = 'variable-gain'";
        uses variable-gain ;
      }
      case fixed-gain{
        when "type_def = 'fixed-gain'";
        uses fixed-gain;
      }
      case no-type-def{
        when "type_def = 'no-type-def'";
        uses no-type-def;
      }
      case openroadm{
        when "type_def = 'openroadm'";
        uses openroadm;
      }
      case dual_stage {
        when "type_def = 'dual_stage'";
        uses dual-stage ;
      }
    }
  }

  grouping common-fiber {
    description "common parameters for fiber and raman fiber";
    leaf type_variety {
      type string ;
      }
      description "a unique name to ID the fiber in the JSON or Excel template topology input file";
    leaf dispersion{
      type decimal64 {
        fraction-digits 8;
      }
      units s.m-1.m-1;
    }
    leaf gamma{
      type decimal64 {
        fraction-digits 8;
      }
      units w-1.m-1 ;
      description "2pi.n2/(lambda*Aeff) (w-2.m-1)";
    }
    leaf pmd_coef{
      type decimal64 {
        fraction-digits 16;
      }
      units s.sqrt(m)-1;
    }      
  }

  grouping eqpt{
    list Edfa {
      key type_variety;
      leaf type_variety {
        type string;
        description "a unique name to ID the amplifier in the JSON/Excel template topology input file";
      }
      uses edfa-common;
    }

    list Fiber {
      key type_variety;
      uses common-fiber;
    }

    list RamanFiber {
      uses common-fiber;
      container raman_efficiency {
        leaf-list cr {
          type decimal64 {
            fraction-digits 8;
          }
        }
        leaf-list frequency_offset {
          type decimal64 {
            fraction-digits 8;
          }
        }
      }
    }

    list Span {
      leaf power_mode {
        type boolean ;
      }
      leaf-list delta_power_range_db {
        type decimal64 {
          fraction-digits 2;
        }
      }
      leaf max_length {
        type decimal64 {
          fraction-digits 2;
        }
        units km;
        default 150.0 ;
      }
      leaf max_loss {
        type decimal64 {
          fraction-digits 2;
        }
        units dB;
      }
      leaf max_fiber_lineic_loss_for_raman {
        type decimal64 {
          fraction-digits 2;
        }
        units dB.km-1;      
      }
      leaf target_extended_gain {
        type decimal64 {
          fraction-digits 2;
        }
        units dB;
      }
      leaf length_units{
        type string ;
        default "km";
      }
      leaf padding{
        type decimal64 {
          fraction-digits 2;
        }
        default 10.0 ;
      }
      leaf EOL{
         type decimal64 {
          fraction-digits 2;
        }
        default 0.0 ;
      }
      leaf con_in{
        type decimal64 {
          fraction-digits 2;
        }
        default 0.0 ;
      }
      leaf con_out{
        type decimal64 {
          fraction-digits 2;
        }    
        default 0.0 ;
      }
    }

    list Roadm {
      leaf target_pch_out_db {
        type decimal64 {
          fraction-digits 2;
        }
      }
      leaf add_drop_osnr {
        type decimal64 {
          fraction-digits 2;
        }
      }
      leaf pmd {
        type decimal64 {
          fraction-digits 2;
        }
      }
      container restrictions {
        leaf-list preamp_variety_list {
          type string;
        }
        leaf-list booster_variety_list {
          type string;
        }
      }
    }

    list SI {
      leaf f_min {
        type decimal64 {
          fraction-digits 2;
        }
      }
      leaf f_max {
        type decimal64 {
          fraction-digits 2;
        }
      }
      leaf baud_rate {
        type decimal64 {
          fraction-digits 2;
        }
      }
      leaf spacing {
        type decimal64 {
          fraction-digits 2;
        }
      }
      leaf power_dbm {
        type decimal64 {
          fraction-digits 2;
        }
      }
      leaf-list power_range_db {
        type decimal64 {
          fraction-digits 2;
        }
      }
      leaf roll_off {
        type decimal64 {
          fraction-digits 2;
        }
      }
      leaf tx_osnr {
        type decimal64 {
          fraction-digits 2;
        }
      }
      leaf sys_margins {
        type decimal64 {
          fraction-digits 2;
        }
      }
    }

    list Transceiver {
      leaf type_variety {
        type string ;
        description "a unique name to ID the transceiver in the JSON or Excel template topology input file";
      }
      container frequency {
        leaf min {
          type decimal64 {
              fraction-digits 2;
            }
          units Hz ;
        }
        leaf max {
          type decimal64 {
              fraction-digits 2;
            }
          units Hz ;
        }
        description "Min/max frequency of transponder eg 191.35e12  and 196.1e12";
      }
      list mode {
        leaf format {
          type string ;
          description "unique name of the mode";
        }
        leaf baud_rate {
          type decimal64 {
              fraction-digits 2;
            }
          units baud ;
          description "baud_rate";
        }
        leaf OSNR {
          type decimal64 {
              fraction-digits 2;
            }
          units dB ;
          description "min required OSNR in 0.1nm (dB)";
        }
        leaf tx_osnr {
          type decimal64 {
              fraction-digits 2;
            }
          units dB ;
          description "min required OSNR in 0.1nm (dB)";
        }
        leaf min_spacing {
          type decimal64 {
              fraction-digits 2;
            }
          units GHz ;
          description "...";
        }    
        leaf bit_rate {
          type decimal64 {
              fraction-digits 2;
            }
          units bit/s ;
          description "bit rate";
        }
        leaf roll_off {
          type decimal64 {
              fraction-digits 2;
            }
          description "...";
        }
        leaf cost {
          type decimal64 {
              fraction-digits 2;
            }
          description "arbitrary unit";
        }
      }
    }
  }
}