RepoSetup.fs

/// Preparing a codebase based on a 'RepoSpec'
module FCSBenchmark.Generator.RepoSetup

open System.IO
open LibGit2Sharp

[<CLIMutable>]
type RepoSpec =
    {
        Name : string
        GitUrl : string
        Revision : string
    }

    override this.ToString () =
        $"{this.Name} ({this.GitUrl}) @ {this.Revision}"

type Config =
    {
        BaseDir : string
        ForceFCSBuild : bool
    }

let revisionDir (config : Config) (spec : RepoSpec) : string =
    Path.Combine (config.BaseDir, spec.Name, spec.Revision)

let prepareRepo (config : Config) (spec : RepoSpec) : Repository =
    log.Information ("Preparing repo {spec}", spec)
    let dir = revisionDir config spec

    if Repository.IsValid dir |> not then
        use repo = Git.clone dir spec.GitUrl
        Git.checkout repo spec.Revision
        repo
    else
        log.Information (
            "{dir} already exists and is a git repository - will assume the repository revision is already checked out",
            dir
        )

        new Repository (dir)