"""

Hg app, a web based mercurial repository managment based on pylons

"""

__version__ = '.'.join((str(each) for each in VERSION[:4]))

def get_version():

    """

    Returns shorter version (digit parts only) as string.

    """

    return '.'.join((str(each) for each in VERSION[:3]))

from pylons.controllers.util import abort, redirect

from pylons_app.lib.base import BaseController, render

from pylons_app.lib.utils import get_repo_slug

from pylons_app.model.hg_model import HgModel

from vcs.utils import diffs as differ

log = logging.getLogger(__name__)

class FilesController(BaseController):

    @LoginRequired()

    def __before__(self):

        super(FilesController, self).__before__()

    def index(self, repo_name, revision, f_path):

        hg_model = HgModel()

        c.repo = repo = hg_model.get_repo(c.repo_name)

        revision = request.POST.get('at_rev', None) or revision

        def get_next_rev(cur):

            max_rev = len(c.repo.revisions) - 1

            r = cur + 1

            if r > max_rev:

                r = max_rev

            return r

        def get_prev_rev(cur):

            r = cur - 1

            return r

        c.f_path = f_path

        try:

            cur_rev = repo.get_changeset(revision).revision

            prev_rev = repo.get_changeset(get_prev_rev(cur_rev)).raw_id

            next_rev = repo.get_changeset(get_next_rev(cur_rev)).raw_id

            c.url_prev = url('files_home', repo_name=c.repo_name,

                             revision=prev_rev, f_path=f_path) 

            c.url_next = url('files_home', repo_name=c.repo_name,

                             revision=next_rev, f_path=f_path)   

            c.changeset = repo.get_changeset(revision)

            try:

                c.file_msg = c.changeset.get_file_message(f_path)

            except:

                c.file_msg = None

            c.cur_rev = c.changeset.raw_id

            c.rev_nr = c.changeset.revision

            c.files_list = c.changeset.get_node(f_path)

            c.file_history = self._get_history(repo, c.files_list, f_path)

        except (RepositoryError, ChangesetError):

            c.files_list = None

        return render('files/files.html')

    def rawfile(self, repo_name, revision, f_path):

        hg_model = HgModel()

        c.repo = hg_model.get_repo(c.repo_name)

        file_node = c.repo.get_changeset(revision).get_node(f_path)

        response.content_type = file_node.mimetype

        response.content_disposition = 'attachment; filename=%s' \

                                                    % f_path.split('/')[-1] 

        return file_node.content

    def annotate(self, repo_name, revision, f_path):

        hg_model = HgModel()

        c.repo = hg_model.get_repo(c.repo_name)

        cs = c.repo.get_changeset(revision)

        c.file = cs.get_node(f_path)

        c.file_msg = cs.get_file_message(f_path)

        c.cur_rev = cs.raw_id

        c.f_path = f_path

        c.annotate = cs.get_file_annotate(f_path)

        return render('files/files_annotate.html')

    def archivefile(self, repo_name, revision, fileformat):

    def diff(self, repo_name, f_path):

        hg_model = HgModel()

        diff1 = request.GET.get('diff1')

        diff2 = request.GET.get('diff2')

        c.action = action = request.GET.get('diff')

        c.no_changes = diff1 == diff2

        c.f_path = f_path

        c.repo = hg_model.get_repo(c.repo_name)

        c.changeset_1 = c.repo.get_changeset(diff1)

        c.changeset_2 = c.repo.get_changeset(diff2)

        c.diff1 = 'r%s:%s' % (c.changeset_1.revision, c.changeset_1._short)

        c.diff2 = 'r%s:%s' % (c.changeset_2.revision, c.changeset_2._short)

        f_udiff = differ.get_udiff(c.changeset_1.get_node(f_path),

                            c.changeset_2.get_node(f_path))

        diff = differ.DiffProcessor(f_udiff)

        if action == 'download':

            diff_name = '%s_vs_%s.diff' % (diff1, diff2)

            response.content_type = 'text/plain'

            response.content_disposition = 'attachment; filename=%s' \

                                                    % diff_name             

            return diff.raw_diff()

        elif action == 'raw':

            c.cur_diff = '<pre class="raw">%s</pre>' % diff.raw_diff()

        elif action == 'diff':

            c.cur_diff = diff.as_html()

        return render('files/file_diff.html')

    def _get_history(self, repo, node, f_path):

        from vcs.nodes import NodeKind

        if not node.kind is NodeKind.FILE:

            return []

        changesets = node.history

        hist_l = []

        for chs in changesets:

            n_desc = 'r%s:%s' % (chs.revision, chs._short)

            hist_l.append((chs._short, n_desc,))

        return hist_l