{-| Module  : FiniteCategories
Description : An example of select1 diagram.
Copyright   : Guillaume Sabbagh 2021
License     : GPL-3
Maintainer  : guillaumesabbagh@protonmail.com
Stability   : experimental
Portability : portable

An example of select1 diagram.
-}
module ExampleDiagram.ExampleSelectOneDiagram
(
    selectOne,
    main
)
where
    import              RandomCompositionGraph.RandomCompositionGraph
    import              System.Random                                   
    import              ExportGraphViz.ExportGraphViz                   (catToPdf,diagToPdf,diagToPdf2)
    import              Diagram.Diagram                                 (mkSelect1, src)
    import              Utils.Sample
    import              FiniteCategory.FiniteCategory
    import              Data.Maybe                                      (fromJust)

    (rcg1,newGen) = (mkRandomCompositionGraph 10 10 3 (mkStdGen 567678))
    
    -- | We select one object in a random category.
    selectOne = fromJust $ mkSelect1 rcg1 (fst (pickOne (ob rcg1) newGen))

    -- | Export the diagram as a pdf with GraphViz.
    main = do 
        putStrLn "Start of ExampleSelectOneDiagram"
        catToPdf rcg1 "OutputGraphViz/Examples/Diagram/SelectOneDiagram/rcg1"
        catToPdf (src selectOne) "OutputGraphViz/Examples/Diagram/SelectOneDiagram/One"
        diagToPdf selectOne "OutputGraphViz/Examples/Diagram/SelectOneDiagram/functor"
        diagToPdf2 selectOne "OutputGraphViz/Examples/Diagram/SelectOneDiagram/diag"
        putStrLn "End of ExampleSelectOneDiagram"