#!/bin/bash -eu

export CMD="./arpackmm --help" # For coverage
echo "$CMD"
eval "$CMD &> arpackmm.run.log"
echo ""
echo "========================================================================================"
echo ""

for eigPb in "--A As.mtx" "--nonSymPb --A An.mtx" "--nonSymPb --cpxPb --A Az.mtx --B Bz.mtx"
do
  for genPb in "" "--genPb"
  do
    for smallMag in "" "--mag SM --noCheck" # SM is known to be difficult to converge.
    do
      export shiftOpt=""
      if [[ "$eigPb" == *nonSymPb* ]]; then
        if [[ "$genPb" == *genPb* ]]; then
          continue # Skip to ensure stable test: tricky to convergence.
        else
          export shiftOpt="--shiftReal 100.0 --shiftImag 100.0"
        fi
      else
        if [[ "$genPb" == *genPb* ]]; then
          continue # Skip to ensure stable test: tricky to convergence.
        else
          export shiftOpt="--shiftReal 100.0"
        fi
      fi

      for shiftRI in "" "$shiftOpt"
      do
        for invert in "" "--invert"
        do
          for tol in "" "--tol 1.e-5"
          do
            for slv in "--slv BiCG --slvItrTol 1.e-06 --slvItrMaxIt 150" "--slv   CG --slvItrTol 1.e-06 --slvItrMaxIt 150" \
                       "--slv BiCG --slvItrPC ILU"                       "--slv   CG --slvItrPC ILU#1.e-06#2"              \
                       "--slv   LU"                                      "--slv   QR --slvDrtPivot 1.e-06"                 \
                       "--slv  LLT"                                      "--slv  LLT --slvDrtOffset 0."                    \
                       "--slv LDLT"                                      "--slv LDLT --slvDrtScale 1."
            do
              for rs in "" "--schur"
              do
                for dsPrec in "" "--simplePrec"
                do
                  for dsMat in "" "--dense false" "--dense true"
                  do
                    export extraGenPb=""
                    if [[ "$genPb" == *genPb* ]]; then
                      export extraGenPb="$shiftOpt" # Force shift if genPb.
                    fi

                    if [[ "$slv" == *CG* ]]; then
                      if [[ "$eigPb" == *nonSymPb* ]]; then
                        continue # Skip CG that could fail (CG is meant to deal with sym matrices).
                      fi
                    fi

                    if [[ "$slv" == *LLT* ]] || [[ "$slv" == *LDLT* ]]; then
                      if [[ "$eigPb" == *nonSymPb* ]] || [[ "$genPb" == *genPb* ]]; then
                        continue # Skip LLT/LDLT that could fail (LLT/LDLT are meant to deal with SPD matrices).
                      fi
                    fi

                    if [[ "$dsMat" == *dense* ]]; then
                      if [[ "$slv" == *CG* ]]; then
                        continue # Iterative solvers are not allowed when using dense matrices.
                      fi
                    fi

                    # Run arpackmm: use --nbCV 6 and --maxIt 200 to ease convergence, and, --verbose 3 for debug.
                    export CMD="./arpackmm $eigPb $genPb $smallMag $shiftRI $invert $tol $slv $rs $dsPrec $dsMat $extraGenPb --nbCV 6 --maxIt 200 --verbose 3 --debug 3"
                    echo "$CMD"
                    eval "$CMD &> arpackmm.run.log"
                    echo ""
                    echo "========================================================================================"
                    echo ""

                    # Run arpackmm: re-run with restart.
                    export CMD="$CMD --restart"
                    echo "$CMD"
                    eval "$CMD &> arpackmm.run.log"
                    echo ""
                    echo "========================================================================================"
                    echo ""
                  done
                done
              done
            done
          done
        done
      done
    done
  done
done

echo "OK"