(* This goal script is responsible for:
 *  - testing each new commit to the libguestfs source repo
 *  - checking for new upstream releases of libguestfs
 *  - testing new upstream releases
 *  - packaging them as a source tarball
 *  - testing the source tarball on a variety of systems
 *  - if all the above works, uploading the external website
 * Note this doesn't build the Fedora releases.  See 'libguestfs_fedora.ml'.
 *)

open Goaljobs
open Printf
open Config
open Libguestfs

(* Enable debugging. *)
let () =
  Unix.putenv "LIBGUESTFS_DEBUG" "1";
  Unix.putenv "LIBGUESTFS_TRACE" "1"

(* Log program output. *)
let from = "rjones@redhat.com"
let to_ = "rjones@redhat.com"
(*
let logfile = log_program_output ()
let () = eprintf "logging to %s\n%!" logfile
*)

let package = "libguestfs"

(* Goal: the website has been updated to 'version'. *)
let rec goal website_updated version =
  target (url_exists version.url);

  require (tarball_created version);
  require (tarball_tested version);

  (* We only update the website for the development releases. *)
  if not version.is_stable then
    require (website_built version);

  require (website_checked_in version);
  require (website_rsync_done version)

(* Goal: website has been rsync'd. *)
and website_rsync_done version =
  target (url_contains_string "http://libguestfs.org" version.version &&
          url_exists version.url);

  sh "
    cd %s
    ./.rsync
  " libguestfs_website_repo

(* Goal: Tarball added to repository and checked in. *)
and website_checked_in version =
  let key = sprintf "libguestfs_website_checked_in_%s" version.version in
  target (memory_exists key);
  onrun (fun () -> memory_set key "1");

  require (tarball_created version);
  require (tarball_tested version);

  sh "
    cd %s
    cp %s/tarballs/%s %s
    git add %s
    git add *.txt *.html
    git commit -m \"Version %s\"
  " libguestfs_website_repo
    buildtmp version.tarball version.urlpath
    version.urlpath
    version.version

(* Goal: website (local copy) has been built. *)
and website_built version =
  let index_file = sprintf "%s/index.html" libguestfs_website_repo in
  target (file_contains_string index_file version.version);

  require (tarball_created version);
  require (tarball_tested version);

  (* We should only update the website on development releases. *)
  assert (not version.is_stable);

  sh "
    tar zxf %s/tarballs/%s
    cd %s

    echo %s > localconfigure
    chmod +x localconfigure
    echo %s > localenv

    ./localconfigure
    make V=1
    make maintainer-upload-website WEBSITEDIR=%s
  " buildtmp version.tarball
    version.package_version
    (quote (libguestfs_localconfigure `Tarball))
    (quote (libguestfs_localenv (supermin version)))
    (quote libguestfs_website_repo)

(* Goal: the tarball has passed the required set of tests before
 * a release is allowed.
 *)
and tarball_tested version =
  let key = sprintf "libguestfs_tarball_tested_%s" version.version in
  target (memory_exists key);
  onrun (fun () -> memory_set key "1");

  require (tarball_created version);

  sh "
    tar zxf %s/tarballs/%s
    cd %s

    echo %s > localconfigure
    chmod +x localconfigure
    echo %s > localenv

    ./localconfigure
    make V=1
    make check-release
  " buildtmp version.tarball
    version.package_version
    (quote (libguestfs_localconfigure `Tarball))
    (quote (libguestfs_localenv (supermin version)))

(* Goal: the tarball has been created from git. *)
and tarball_created version =
  let filename = sprintf "%s/tarballs/%s" buildtmp version.tarball in
  target (file_exists filename);

  require (repo_up_to_date version.branch);

  let repodir = sprintf "%s/repos/%s-%s" buildtmp package version.branch in

  sh "
    cp -a %s libguestfs
    cd libguestfs
    git reset --hard %s

    echo %s > localconfigure
    chmod +x localconfigure
    echo %s > localenv

    ./localconfigure

    # Ensure the po-docs are updated.  Grrr this is ugly ...
    make ||:
    rm po-docs/podfiles
    make -C po-docs update-po

    make V=1
    make dist

    # Ensure redhat hardening flags didn't leak into the tarball.
    # https://bugzilla.redhat.com/show_bug.cgi?id=1214506
    if zcat %s | grep -q redhat-hardened; then exit 1; fi

    mv %s %s/tarballs/%s
  " repodir
    version.version
    (quote (libguestfs_localconfigure `Git))
    (quote (libguestfs_localenv (supermin version)))
    version.tarball
    version.tarball buildtmp version.tarball

(* Goal: test a commit. *)
and commit_tested branch commit =
  onfail (
    fun _ ->
      let subject = sprintf "goal: %s: FAILED" goalname in
      mailto ~from ~subject (*~attach:[logfile]*) to_
  );

  let key = sprintf "libguestfs_commit_tested_%s" commit in
  target (memory_exists key);
  onrun (fun () -> memory_set key "1");

  require (repo_up_to_date branch);

  let repodir = sprintf "%s/repos/%s-%s" buildtmp package branch in

  sh "
    cp -a %s libguestfs
    cd libguestfs
    git reset --hard %s

    echo %s > localconfigure
    chmod +x localconfigure
    echo %s > localenv

    ./localconfigure
    make V=1
    make check-release
  " repodir
    commit
    (quote (libguestfs_localconfigure `Git))
    (quote (libguestfs_localenv None))

and repo_up_to_date branch =
  git_force branch

let () =
  (* Add a periodic job to check for new git commits and test them. *)
  every libguestfs_query_mins minutes ~name:"new libguestfs commit" (
    fun () ->
      require (repo_up_to_date "master");
      let commit = git_latest_commit "master" in
      require (commit_tested "master" commit);
  );

  (* Periodic job to build new tarballs. *)
  every libguestfs_query_mins minutes ~name:"new libguestfs version" (
    fun () ->
      require (repo_up_to_date "master");
      let version = git_latest_version "master" in
      require (website_updated version)
  )

(* Allow these jobs to run from the command line. *)
let () =
  publish "commit" (
    function
    | [commit] -> require (commit_tested "master" commit)
    | [branch; commit] -> require (commit_tested branch commit)
    | _ ->
      failwith "use './libguestfs_upstream commit [<branch>] <commit>'"
  );
  publish "release" (
    function
    | [version] -> require (website_updated (vernames version))
    | _ ->
      failwith "use './libguestfs_upstream release <version>'"
  )