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#include "EventFilter/L1TRawToDigi/interface/OmtfLinkMappingCsc.h"

namespace omtf {

  MapEleIndex2CscDet mapEleIndex2CscDet() {
    MapEleIndex2CscDet result;
    for (unsigned int fed = 1380; fed <= 1381; fed++) {
      //Endcap label. 1=forward (+Z); 2=backward (-Z)
      unsigned int endcap = (fed == 1380) ? 2 : 1;
      for (unsigned int amc = 1; amc <= 6; amc++) {
        for (unsigned int link = 0; link <= 34; link++) {
          unsigned int stat = 0;
          unsigned int ring = 0;
          unsigned int cham = 0;
          switch (link) {
            case (0): {
              stat = 1;
              ring = 2;
              cham = 3;
              break;
            }  //  (0,  9, 2, 3 ), --channel_0  OV1A_4 chamber_ME1/2/3  layer_9 input 2, 3
            case (1): {
              stat = 1;
              ring = 2;
              cham = 4;
              break;
            }  //  (1,  9, 4, 5 ), --channel_1  OV1A_5 chamber_ME1/2/4  layer_9 input 4, 5
            case (2): {
              stat = 1;
              ring = 2;
              cham = 5;
              break;
            }  //  (2,  9, 6, 7 ), --channel_2  OV1A_6 chamber_ME1/2/5  layer_9 input 6, 7
            case (3): {
              stat = 1;
              ring = 3;
              cham = 3;
              break;
            }  //  (3,  6, 2, 3 ), --channel_3  OV1A_7 chamber_ME1/3/3  layer_6 input 2, 3
            case (4): {
              stat = 1;
              ring = 3;
              cham = 4;
              break;
            }  //  (4,  6, 4, 5 ), --channel_4  OV1A_8 chamber_ME1/3/4  layer_6 input 4, 5
            case (5): {
              stat = 1;
              ring = 3;
              cham = 5;
              break;
            }  //  (5,  6, 6, 7 ), --channel_5  OV1A_9 chamber_ME1/3/5  layer_6 input 6, 7
            case (6): {
              stat = 1;
              ring = 2;
              cham = 6;
              break;
            }  //  (6,  9, 8, 9 ), --channel_6  OV1B_4 chamber_ME1/2/6  layer_9 input 8, 9
            case (7): {
              stat = 1;
              ring = 2;
              cham = 7;
              break;
            }  //  (7,  9, 10,11), --channel_7  OV1B_5 chamber_ME1/2/7  layer_9 input 10,11
            case (8): {
              stat = 1;
              ring = 2;
              cham = 8;
              break;
            }  //  (8,  9, 12,13), --channel_8  OV1B_6 chamber_ME1/2/8  layer_9 input 12,13
            case (9): {
              stat = 1;
              ring = 3;
              cham = 6;
              break;
            }  //  (9,  6, 8, 9 ), --channel_9  OV1B_7 chamber_ME1/3/6  layer_6 input 8, 9
            case (10): {
              stat = 1;
              ring = 3;
              cham = 7;
              break;
            }  //  (10, 6, 10,11), --channel_10 OV1B_8 chamber_ME1/3/7  layer_6 input 10,11
            case (11): {
              stat = 1;
              ring = 3;
              cham = 8;
              break;
            }  //  (11, 6, 12,13), --channel_11 OV1B_9 chamber_ME1/3/8  layer_6 input 12,13
            case (12): {
              stat = 2;
              ring = 2;
              cham = 3;
              break;
            }  //  (12, 7, 2, 3 ), --channel_0  OV2_4  chamber_ME2/2/3  layer_7 input 2, 3
            case (13): {
              stat = 2;
              ring = 2;
              cham = 4;
              break;
            }  //  (13, 7, 4, 5 ), --channel_1  OV2_5  chamber_ME2/2/4  layer_7 input 4, 5
            case (14): {
              stat = 2;
              ring = 2;
              cham = 5;
              break;
            }  //  (14, 7, 6, 7 ), --channel_2  OV2_6  chamber_ME2/2/5  layer_7 input 6, 7
            case (15): {
              stat = 2;
              ring = 2;
              cham = 6;
              break;
            }  //  (15, 7, 8, 9 ), --channel_3  OV2_7  chamber_ME2/2/6  layer_7 input 8, 9
            case (16): {
              stat = 2;
              ring = 2;
              cham = 7;
              break;
            }  //  (16, 7, 10,11), --channel_4  OV2_8  chamber_ME2/2/7  layer_7 input 10,11
            case (17): {
              stat = 2;
              ring = 2;
              cham = 8;
              break;
            }  //  (17, 7, 12,13), --channel_5  OV2_9  chamber_ME2/2/8  layer_7 input 12,13
            case (18): {
              stat = 3;
              ring = 2;
              cham = 3;
              break;
            }  //  (18, 8, 2, 3 ), --channel_6  OV3_4  chamber_ME3/2/3  layer_8 input 2, 3
            case (19): {
              stat = 3;
              ring = 2;
              cham = 4;
              break;
            }  //  (19, 8, 4, 5 ), --channel_7  OV3_5  chamber_ME3/2/4  layer_8 input 4, 5
            case (20): {
              stat = 3;
              ring = 2;
              cham = 5;
              break;
            }  //  (20, 8, 6, 7 ), --channel_8  OV3_6  chamber_ME3/2/5  layer_8 input 6, 7
            case (21): {
              stat = 3;
              ring = 2;
              cham = 6;
              break;
            }  //  (21, 8, 8, 9 ), --channel_9  OV3_7  chamber_ME3/2/6  layer_8 input 8, 9
            case (22): {
              stat = 3;
              ring = 2;
              cham = 7;
              break;
            }  //  (22, 8, 10,11), --channel_10 OV3_8  chamber_ME3/2/7  layer_8 input 10,11
            case (23): {
              stat = 3;
              ring = 2;
              cham = 8;
              break;
            }  //  (23, 8, 12,13), --channel_11 OV3_9  chamber_ME3/2/8  layer_8 input 12,13
            case (24): {
              stat = 4;
              ring = 2;
              cham = 3;
              break;
            }  //--(24,  ,      ), --channel_3  OV4_4  chamber_ME4/2/3  layer   input
            case (25): {
              stat = 4;
              ring = 2;
              cham = 4;
              break;
            }  //--(25,  ,      ), --channel_4  OV4_5  chamber_ME4/2/4  layer   input
            case (26): {
              stat = 4;
              ring = 2;
              cham = 5;
              break;
            }  //--(26,  ,      ), --channel_5  OV4_6  chamber_ME4/2/5  layer   input
            case (27): {
              stat = 4;
              ring = 2;
              cham = 6;
              break;
            }  //--(27,  ,      ), --channel_7  OV4_7  chamber_ME4/2/6  layer   input
            case (28): {
              stat = 4;
              ring = 2;
              cham = 7;
              break;
            }  //--(28,  ,      ), --channel_8  OV4_8  chamber_ME4/2/7  layer   input
            case (29): {
              stat = 4;
              ring = 2;
              cham = 8;
              break;
            }  //--(29,  ,      ), --channel_9  OV4_9  chamber_ME4/2/8  layer   input
            case (30): {
              stat = 1;
              ring = 2;
              cham = 2;
              break;
            }  //  (30, 9, 0, 1 ), --channel_0  OV1B_6 chamber_ME1/2/2  layer_9 input 0, 1
            case (31): {
              stat = 1;
              ring = 3;
              cham = 2;
              break;
            }  //  (31, 6, 0, 1 ), --channel_1  OV1B_9 chamber_ME1/3/2  layer_6 input 0, 1
            case (32): {
              stat = 2;
              ring = 2;
              cham = 2;
              break;
            }  //  (32, 7, 0, 1 ), --channel_2  OV2_9  chamber_ME2/2/2  layer_7 input 0, 1
            case (33): {
              stat = 3;
              ring = 2;
              cham = 2;
              break;
            }  //  (33, 8, 0, 1 ), --channel_3  ON3_9  chamber_ME3/2/2  layer_8 input 0, 1
            case (34): {
              stat = 4;
              ring = 2;
              cham = 2;
              break;
            }  //--(34,  ,      ), --channel_4  ON4_9  chamber_ME4/2/2  layer   input
            default: {
              stat = 0;
              ring = 0;
              cham = 0;
              break;
            }
          }
          if (ring != 0) {
            int chamber = cham + (amc - 1) * 6;
            if (chamber > 36)
              chamber -= 36;
            CSCDetId cscDetId(endcap, stat, ring, chamber, 0);
            EleIndex omtfEle(fed, amc, link);
            result[omtfEle] = cscDetId;
          }
        }
      }
    }
    return result;
  }

  MapCscDet2EleIndex mapCscDet2EleIndex() {
    MapCscDet2EleIndex result;
    MapEleIndex2CscDet omtf2cscs = mapEleIndex2CscDet();

    for (const auto& omtf2csc : omtf2cscs) {
      uint32_t rawId = omtf2csc.second;
      auto it = result.find(rawId);
      if (result.end() == it) {
        result[rawId] = std::make_pair(omtf2csc.first, EleIndex());
      } else {
        it->second.second = omtf2csc.first;
      }
    }

    return result;
  }

}  // namespace omtf