useDynLib(pcalg, .registration=TRUE)

###----- Imports ------------------------------------------------------

importFrom("stats", cor, cor.test, cov, cov2cor,
           fisher.test, pchisq, pnorm, qnorm,
           rbinom, rcauchy, rnorm, rt, runif,
           sd, setNames, symnum, uniroot)

importFrom("utils", combn, str)

importFrom("graphics", par, plot, title)
## For R >= 4.0.0, plot is in 'base' (but in 'graphics', too)
## if(getRversion() < "4.0.0")
##     importFrom("graphics", plot)

importMethodsFrom("methods", coerce, show)
importFrom("methods",
           setClass, setClassUnion, setMethod, setOldClass, setValidity,
           getClass, getClassDef, callGeneric, as, is, extends,
	   new, validObject,
	   signature, representation, prototype)

## aargh: slow loading {currently just for getGraph() and similar}
## importFrom("Matrix", coerce)
## importClassesFrom("Matrix", Matrix, sparseMatrix, TsparseMatrix)

importFrom("abind", abind)
importFrom("corpcor", pseudoinverse)

importFrom("robustbase",
	   covOGK, hard.rejection,
	   Qn, s_Qn, scaleTau2 #, Sn, s_Sn, s_mad, s_IQR
	   )

importFrom("graph",
           reverseEdgeDirections,
           edgeRenderInfo, "edgeRenderInfo<-")
importClassesFrom("graph", graph, graphAM, graphNEL)
importMethodsFrom("graph",
		  ## addEdge,
		  coerce,# as(., ...)
		  edges, edgeData,
		  edgeDataDefaults, "edgeDataDefaults<-",
		  isDirected,
		  nodes, "nodes<-",
		  numNodes, numEdges,
		  subGraph, ugraph)

importFrom("igraph", graph_from_adjacency_matrix, graph_from_graphnel, is_chordal, plot.igraph, dfs, sample_k_regular, as_adjacency_matrix, sample_smallworld, simplify, sample_bipartite, sample_pa, sample_islands, sample_degseq)

importFrom("RBGL",
	   biConnComp, johnson.all.pairs.sp, separates, bfs, connectedComp)
## problems on Mac;
## used in
## biConnComp: pdsep -> fci
## johnson.all.pairs.sp -> dsep (-> dsepTest), dreach (-> backdoor)
## separates -> dsep
## bfs -> dsep
## connectedComp -> pag2magAM, backdoor

## also    sp.between -- but only for deprecated beta.special(), hence RBGL::*

importFrom("ggm", isAcyclic, transClos, topOrder, msep)
importFrom("Rcpp", evalCpp) # Needed for any package relying on Rcpp headers...
  # Otherwise, there are runtime errors.

importFrom("bdsmatrix", gchol) ## for jointIda ("MCD")

importFrom("sfsmisc", digitsBase, is.whole)

importFrom("fastICA", fastICA)
importFrom("clue", solve_LSAP)
## importFrom("dagitty", dagitty, isAdjustmentSet, adjustmentSets)
###----- Exports ------------------------------------------------------

export(getGraph)# our S4 generic including methods

export(trueCov,
       randomDAG,
       wgtMatrix,
       rmvDAG,
       pcSelect,
       zStat,
       condIndFisherZ,
       pcorOrder,
       compareGraphs,
       getNextSet,
       mcor,
       pcSelect.presel,
       corGraph,
       dag2cpdag,
       ## adj.check,
       udag2pdag, udag2pdagSpecial, udag2pdagRelaxed,
       shd,
       pcAlgo, pcAlgo.Perfect,
       pdag2dag,
       udag2pag,
       beta.special,
       beta.special.pcObj,
       causalEffect,
       dreach, qreach,
       plotAG,
       skeleton,
       pc,
       gSquareBin,
       gSquareDis,
       gaussCItest,
       # gaussCItest.fast,
       dsep,
       dsepTest,
       disCItest,
       binCItest,
       ida,
       idaFast,
       legal.path,
       plotSG,
       pc.cons.intern,
       checkTriple,
       triple2numb,
       fci,
       pdsep,
       rfci,
       find.unsh.triple,
       udag2apag,
       dag2pag, # skeleton.dag2pag,
       iplotPC,
       showEdgeList,
       showAmat,
       visibleEdge,
       possibleDe,
       pag2magAM,
       backdoor,
       jointIda,
       dsep,
       dsepTest,
       ## Alain's :
       r.gauss.pardag,
       rmvnorm.ivent,
       gies,
       ges,
       gds,
       simy,
       mat2targets,
       targets2mat,
       dag2essgraph,
       opt.target,
       ## --- end{Alain}
       fciPlus,
       lingam, LINGAM,
       randDAG,
       gac,
       ## no longer: use as(*,"amat")
       ##  displayAmat,
       pdag2allDags,
       possDe,
       possAn,
       pcalg2dagitty,
       addBgKnowledge,
       adjustment,
       isValidGraph,
       ages,
       optAdjSet,
       ## Joris:
       dsepAM,
       dsepAMTest,
       pag2anc,
       pag2conf,
       pag2edge,
       searchAM)

## These are "internal" i.e., in man/pcalg-internal.Rd
## _FIXME ?_                     ---------------------
export(##ancTS,
       ## has.new.coll,
       ## ci.test,
       ## dep.triple,
       ## faith.check,
       ## find.sink,
       ## flipEdges,
       ## minUncovCircPath,
       ## minUncovPdPath,
       ## minDiscrPath,
       ## my.SpecialDag,
       ## reach, # NB: dreach(), qreach() *are* non-internal
       ## updateList,
       ## FIXME{MM}: document !
       rfci.vStruc,
       allDags,
       amat2dag)


exportClasses("pcAlgo",
              "fciAlgo",
              "gAlgo",
              "ParDAG",
              "GaussParDAG",
              "Score",
              "GaussL0penIntScore",
              "GaussL0penObsScore",
              "EssGraph")

exportMethods(# needed? "coerce",# <- defined via setAs(., ..) used via  as(A, "class_B")
              "summary", "show", "plot")

S3method(print, fciAlgo)
S3method(print, pcAlgo)
S3method(print, amat)
## FIXME: TODO
# S3method(print, LINGAM)

