BuildTools.fs

module BuildTools

open Fake.Core
open Fake.DotNet

module Tools =
    let private findTool tool winTool =
        let tool = if Environment.isUnix then tool else winTool
        match ProcessUtils.tryFindFileOnPath tool with
        | Some t -> t
        | _ ->
            let errorMsg =
                tool + " was not found in path. " +
                "Please install it and make sure it's available from your path. "
            failwith errorMsg

    let private runTool (cmd:string) args workingDir =
        let arguments = args |> String.split ' ' |> Arguments.OfArgs
        Command.RawCommand (cmd, arguments)
        |> CreateProcess.fromCommand
        |> CreateProcess.withWorkingDirectory workingDir
        |> CreateProcess.ensureExitCode
        |> Proc.run
        |> ignore

    let dotnet cmd workingDir =
        let result =
            DotNet.exec (DotNet.Options.withWorkingDirectory workingDir) cmd ""
        if result.ExitCode <> 0 then failwithf "'dotnet %s' failed in %s" cmd workingDir

    let femto = runTool "femto"
    let node = runTool (findTool "node" "node.exe")
    let yarn = runTool (findTool "yarn" "yarn.cmd")
    let npm = runTool (findTool "npm" "npm.cmd")