control

open System
open FsUnit
open NUnit.Framework


module aln =
    //Описание типов
    type LineElement =
        |Word of string
        |Space of int

    type NewLineElement = Line of (LineElement list)*int*int
    //Функция рисующая n пробелов
    let nspace n =
        let rec nspace' n str =
            match n with
            |0->str
            |_->nspace' (n-1) (str+" ")
        nspace' n ""
    //Функция делящая слова на отдельные строчки и вставляющая по одному пробелу между словами
    let divide list num =
        let rec divide' list num acc list' list'' numwd =
             match list with
                |hd::tl ->
                    match hd with
                        |Word a when (list''=[]) -> divide' tl num (String.length a) (list') ([Word(a)]) (numwd+1)
                        |Word a when ((acc+String.length a+1<=num)) -> divide' tl num (acc+String.length a+1) (list') (list''@[Space(1)]@[Word(a)]) (numwd+1)
                        |Word a when ((acc+String.length a+1)>num)-> divide' (hd::tl) num (0) (list'@ [Line(list'', acc, numwd)]) ([]) (0)
                |[]->list'@[Line(list'',acc, numwd)]
        divide' list num 0 [] [] 0
    //Функции выравнивания по различным краям
    let rec alignleft list num =
        match list with
            |hd::tl->
                match hd with
                    |Line(list',a, numwd)->[Line(list'@[Space(num-a)], a, numwd)] @ alignleft tl num
            |[]->[]

    let rec aligncenter list num =
        match list with
            |hd::tl->
                match hd with
                    |Line(list',a, numwd)->[Line([Space((num-a)%2 + (num-a)/2)]@list'@[Space((num-a)/2)], a, numwd)] @ aligncenter tl num
            |[]->[]

    let rec alignright list num =
        match list with
            |Line(list',a, numwd)::tl->[Line([Space(num-a)]@list', a, numwd)] @ alignright tl num
            |[]->[]
    //Функция вставляющая нужное количество пробелов при выравнивании по ширине
    let newline list numwd numlet num =
        let rec newline' list numwd numlet num listnak=
           match list with
           |(Space k)::tl-> newline' tl (numwd-1) numlet num (Space (k+int(floor(float(num-numlet)/float(numwd-1))))::listnak)
           |(Word k)::tl -> newline' tl numwd numlet num (Word k::listnak)
           |[]->listnak
        Line(newline' list numwd numlet num [], numlet, numwd)

    //функция выравнивания по ширине
    let rec alignwidth list num =
          match list with
            |Line(list',a, numwd)::tl->(newline list' numwd a num)::(alignwidth tl num)
            |[]->[]

    //Функция пещатающая линию
    let rec printline line str=
        match line with
            |Space(k)::tl-> printline tl (str+nspace(k))
            |Word(k)::tl->  printline tl (str+k)
            |[]->printfn "%A" str
    //Функция печатающая текст
    let rec printtext list =
        match list with
            |Line(list', a, b)::tl->printline list' ""; printtext tl
            |[]->printfn  "";

[<TestFixture>]
module test =
    [<Test>]
    let ``Test`` () =
        let src = [aln.Word("jgxzczx") ; aln.Word ("svyaza"); aln.Word ("korova"); aln.Word ("at"); aln.Word("let"); aln.Word("kok"); aln.Word("s"); aln.Word("ere"); aln.Word("oblom"); aln.Word("Kirovreporting")]
        let temp = aln.divide src 20
        let out = aln.alignwidth temp
        out |> should equal [aln.Line ([aln.Word "svyaza"; aln.Space 7; aln.Word "jgxzczx"],14,2);
                                  aln.Line([aln.Word "s"; aln.Space 2; aln.Word "kok"; aln.Space 1; aln.Word "let"; aln.Space 1; aln.Word "at"; aln.Space 1; aln.Word "korova"],19,5);
                                  aln.Line ([aln.Word "oblom"; aln.Space 12; aln.Word "ere"],9,2);
                                  aln.Line ([aln.Word "Kirovreporting"],14,1)]


    [<EntryPoint>]
    let main argv =

        let list = [aln.Word("jgxzczx") ; aln.Word ("svyaza"); aln.Word ("korova"); aln.Word ("at"); aln.Word("let"); aln.Word("kok"); aln.Word("s"); aln.Word("ere"); aln.Word("oblom"); aln.Word("Kirovreporting")]

        let sc = aln.divide list 20

        let m = aln.alignright sc 20

        let r = aln.printtext m
        printfn "%A" argv
        0 // возвращение целочисленного кода выхода