# -*- coding: utf-8 -*-

"""

    rhodecode.controllers.files

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~

    Files controller for RhodeCode

    :created_on: Apr 21, 2010

    :author: marcink

    :copyright: (C) 2010-2012 Marcin Kuzminski <marcin@python-works.com>

    :license: GPLv3, see COPYING for more details.

"""

# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from __future__ import with_statement

import os

import logging

import traceback

import tempfile

from pylons import request, response, tmpl_context as c, url

from pylons.i18n.translation import _

from pylons.controllers.util import redirect

from pylons.decorators import jsonify

from rhodecode.lib import diffs

from rhodecode.lib import helpers as h

from rhodecode.lib.compat import OrderedDict

from rhodecode.lib.utils2 import convert_line_endings, detect_mode, safe_str

from rhodecode.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator

from rhodecode.lib.base import BaseRepoController, render

from rhodecode.lib.vcs.backends.base import EmptyChangeset

from rhodecode.lib.vcs.conf import settings

from rhodecode.lib.vcs.exceptions import RepositoryError, \

    ChangesetDoesNotExistError, EmptyRepositoryError, \

    ImproperArchiveTypeError, VCSError, NodeAlreadyExistsError

from rhodecode.lib.vcs.nodes import FileNode

from rhodecode.model.repo import RepoModel

from rhodecode.model.scm import ScmModel

from rhodecode.model.db import Repository

from rhodecode.controllers.changeset import anchor_url, _ignorews_url,\

    _context_url, get_line_ctx, get_ignore_ws

log = logging.getLogger(__name__)

class FilesController(BaseRepoController):

    def __before__(self):

        super(FilesController, self).__before__()

        c.cut_off_limit = self.cut_off_limit

    def __get_cs_or_redirect(self, rev, repo_name, redirect_after=True):

        """

        Safe way to get changeset if error occur it redirects to tip with

        proper message

        :param rev: revision to fetch

        :param repo_name: repo name to redirect after

        """

        try:

            return c.rhodecode_repo.get_changeset(rev)

        except EmptyRepositoryError, e:

            if not redirect_after:

                return None

            url_ = url('files_add_home',

                       repo_name=c.repo_name,

                       revision=0, f_path='')

            add_new = '<a href="%s">[%s]</a>' % (url_, _('click here to add new file'))

            h.flash(h.literal(_('There are no files yet %s') % add_new),

                    category='warning')

            redirect(h.url('summary_home', repo_name=repo_name))

        except RepositoryError, e:

            h.flash(str(e), category='warning')

            redirect(h.url('files_home', repo_name=repo_name, revision='tip'))

    def __get_filenode_or_redirect(self, repo_name, cs, path):

        """

        Returns file_node, if error occurs or given path is directory,

        it'll redirect to top level path

        :param repo_name: repo_name

        :param cs: given changeset

        :param path: path to lookup

        """

        try:

            file_node = cs.get_node(path)

            if file_node.is_dir():

                raise RepositoryError('given path is a directory')

        except RepositoryError, e:

            h.flash(str(e), category='warning')

            redirect(h.url('files_home', repo_name=repo_name,

                           revision=cs.raw_id))

        return file_node

    @LoginRequired()

    @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',

                                   'repository.admin')

    def index(self, repo_name, revision, f_path, annotate=False):

        # redirect to given revision from form if given

        post_revision = request.POST.get('at_rev', None)

        if post_revision:

            cs = self.__get_cs_or_redirect(post_revision, repo_name)

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

                         revision=cs.raw_id, f_path=f_path))

        c.changeset = self.__get_cs_or_redirect(revision, repo_name)

        c.branch = request.GET.get('branch', None)

        c.f_path = f_path

        c.annotate = annotate

        cur_rev = c.changeset.revision

        # prev link

        try:

            prev_rev = c.rhodecode_repo.get_changeset(cur_rev).prev(c.branch)

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

                         revision=prev_rev.raw_id, f_path=f_path)

            if c.branch:

                c.url_prev += '?branch=%s' % c.branch

        except (ChangesetDoesNotExistError, VCSError):

            c.url_prev = '#'

        # next link

        try:

            next_rev = c.rhodecode_repo.get_changeset(cur_rev).next(c.branch)

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

                     revision=next_rev.raw_id, f_path=f_path)

            if c.branch:

                c.url_next += '?branch=%s' % c.branch

        except (ChangesetDoesNotExistError, VCSError):

            c.url_next = '#'

        # files or dirs

        try:

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

            if c.file.is_file():

                _hist = c.rhodecode_repo.get_changeset().get_file_history(f_path)

                c.file_history = self._get_node_history(None, f_path, _hist)

                c.authors = []

                for a in set([x.author for x in _hist]):

                    c.authors.append((h.email(a), h.person(a)))

            else:

                c.authors = c.file_history = []

        except RepositoryError, e:

            h.flash(str(e), category='warning')

            redirect(h.url('files_home', repo_name=repo_name,

                           revision='tip'))

        if request.environ.get('HTTP_X_PARTIAL_XHR'):

            return render('files/files_ypjax.html')

        return render('files/files.html')

    @LoginRequired()

    @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',

                                   'repository.admin')

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

        cs = self.__get_cs_or_redirect(revision, repo_name)

        file_node = self.__get_filenode_or_redirect(repo_name, cs, f_path)

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

            safe_str(f_path.split(Repository.url_sep())[-1])

        response.content_type = file_node.mimetype

        return file_node.content

    @LoginRequired()

    @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',

                                   'repository.admin')

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

        cs = self.__get_cs_or_redirect(revision, repo_name)

        file_node = self.__get_filenode_or_redirect(repo_name, cs, f_path)

        raw_mimetype_mapping = {

            # map original mimetype to a mimetype used for "show as raw"

            # you can also provide a content-disposition to override the

            # default "attachment" disposition.

            # orig_type: (new_type, new_dispo)

            # show images inline:

            'image/x-icon': ('image/x-icon', 'inline'),

            'image/png': ('image/png', 'inline'),

            'image/gif': ('image/gif', 'inline'),

            'image/jpeg': ('image/jpeg', 'inline'),

            'image/svg+xml': ('image/svg+xml', 'inline'),

        }

        mimetype = file_node.mimetype

        try:

            mimetype, dispo = raw_mimetype_mapping[mimetype]

        except KeyError:

            # we don't know anything special about this, handle it safely

            if file_node.is_binary:

                # do same as download raw for binary files

                mimetype, dispo = 'application/octet-stream', 'attachment'

            else:

                # do not just use the original mimetype, but force text/plain,

                # otherwise it would serve text/html and that might be unsafe.

                # Note: underlying vcs library fakes text/plain mimetype if the

                # mimetype can not be determined and it thinks it is not

                # binary.This might lead to erroneous text display in some

                # cases, but helps in other cases, like with text files

                # without extension.

                mimetype, dispo = 'text/plain', 'inline'

        if dispo == 'attachment':

            dispo = 'attachment; filename=%s' % \

                        safe_str(f_path.split(os.sep)[-1])

        response.content_disposition = dispo

        response.content_type = mimetype

        return file_node.content

    @LoginRequired()

    @HasRepoPermissionAnyDecorator('repository.write', 'repository.admin')

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

        repo = Repository.get_by_repo_name(repo_name)

        if repo.enable_locking and repo.locked[0]:

            h.flash(_('This repository is has been locked by %s on %s')

                % (h.person_by_id(repo.locked[0]),

                   h.fmt_date(h.time_to_datetime(repo.locked[1]))),

                  'warning')

            return redirect(h.url('files_home',

                                  repo_name=repo_name, revision='tip'))

        r_post = request.POST

        c.cs = self.__get_cs_or_redirect(revision, repo_name)

        c.file = self.__get_filenode_or_redirect(repo_name, c.cs, f_path)

        if c.file.is_binary:

            return redirect(url('files_home', repo_name=c.repo_name,

                         revision=c.cs.raw_id, f_path=f_path))

        c.f_path = f_path

        if r_post:

            old_content = c.file.content

            sl = old_content.splitlines(1)

            first_line = sl[0] if sl else ''

            # modes:  0 - Unix, 1 - Mac, 2 - DOS

            mode = detect_mode(first_line, 0)

            content = convert_line_endings(r_post.get('content'), mode)

            message = r_post.get('message') or (_('Edited %s via RhodeCode')

                                                % (f_path))

            author = self.rhodecode_user.full_contact

            if content == old_content:

                h.flash(_('No changes'),

                    category='warning')

                return redirect(url('changeset_home', repo_name=c.repo_name,

                                    revision='tip'))

            try:

                self.scm_model.commit_change(repo=c.rhodecode_repo,

                                             repo_name=repo_name, cs=c.cs,

                                             user=self.rhodecode_user,

                                             author=author, message=message,

                                             content=content, f_path=f_path)

                h.flash(_('Successfully committed to %s') % f_path,

                        category='success')

            except Exception:

                log.error(traceback.format_exc())

                h.flash(_('Error occurred during commit'), category='error')

            return redirect(url('changeset_home',

                                repo_name=c.repo_name, revision='tip'))

        return render('files/files_edit.html')

    @LoginRequired()

    @HasRepoPermissionAnyDecorator('repository.write', 'repository.admin')

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

        repo = Repository.get_by_repo_name(repo_name)

        if repo.enable_locking and repo.locked[0]:

            h.flash(_('This repository is has been locked by %s on %s')

                % (h.person_by_id(repo.locked[0]),

                   h.fmt_date(h.time_to_datetime(repo.locked[1]))),

                  'warning')

            return redirect(h.url('files_home',

                                  repo_name=repo_name, revision='tip'))

        r_post = request.POST

        c.cs = self.__get_cs_or_redirect(revision, repo_name,

                                         redirect_after=False)

        if c.cs is None:

            c.cs = EmptyChangeset(alias=c.rhodecode_repo.alias)

        c.f_path = f_path

        if r_post:

            unix_mode = 0

            content = convert_line_endings(r_post.get('content'), unix_mode)

            message = r_post.get('message') or (_('Added %s via RhodeCode')

                                                % (f_path))

            location = r_post.get('location')

            filename = r_post.get('filename')

            file_obj = r_post.get('upload_file', None)

            if file_obj is not None and hasattr(file_obj, 'filename'):

                filename = file_obj.filename

                content = file_obj.file

            node_path = os.path.join(location, filename)

            author = self.rhodecode_user.full_contact

            if not content:

                h.flash(_('No content'), category='warning')

                return redirect(url('changeset_home', repo_name=c.repo_name,

                                    revision='tip'))

            if not filename:

                h.flash(_('No filename'), category='warning')

                return redirect(url('changeset_home', repo_name=c.repo_name,

                                    revision='tip'))

            try:

                self.scm_model.create_node(repo=c.rhodecode_repo,

                                           repo_name=repo_name, cs=c.cs,

                                           user=self.rhodecode_user,

                                           author=author, message=message,

                                           content=content, f_path=node_path)

                h.flash(_('Successfully committed to %s') % node_path,

                        category='success')

            except NodeAlreadyExistsError, e:

                h.flash(_(e), category='error')

<dl>

	<dt class="file_history">${_('History')}</dt>

	<dd>

        <div>

    		<div style="float:left">

    		${h.form(h.url('files_diff_home',repo_name=c.repo_name,f_path=c.f_path),method='get')}

    		${h.submit('diff',_('diff to revision'),class_="ui-btn")}

    		${h.submit('show_rev',_('show at revision'),class_="ui-btn")}

    		${h.end_form()}

    		</div>

            <div class="file_author">

                <div class="item">${h.literal(ungettext(u'%s author',u'%s authors',len(c.authors)) % ('<b>%s</b>' % len(c.authors))) }</div>

                %for email, user in c.authors:

                  <div class="contributor tooltip" style="float:left" title="${h.tooltip(user)}">

                    <div class="gravatar" style="margin:1px"><img alt="gravatar" src="${h.gravatar_url(email, 20)}"/> </div>

                  </div>

                %endfor

            </div>

        </div>

        <div style="clear:both"></div>

	</dd>

</dl>

<div id="body" class="codeblock">

	<div class="code-header">

        <div class="stats">

            <div class="left img"><img src="${h.url('/images/icons/file.png')}"/></div>

            <div class="left item"><pre>${h.format_byte_size(c.file.size,binary=True)}</pre></div>

            <div class="left item last"><pre>${c.file.mimetype}</pre></div>

            <div class="buttons">

              %if c.annotate:

              %else:

              %endif

              % if h.HasRepoPermissionAny('repository.write','repository.admin')(c.repo_name):

               % if not c.file.is_binary:

               % endif

              % endif

            </div>

        </div>

        <div class="author">

            <div class="gravatar">

            </div>

        </div>

	</div>

	<div class="code-body">

	   %if c.file.is_binary:

	       ${_('Binary file (%s)') % c.file.mimetype}

	   %else:

		% if c.file.size < c.cut_off_limit:

            %if c.annotate:

              ${h.pygmentize_annotation(c.repo_name,c.file,linenos=True,anchorlinenos=True,lineanchors='L',cssclass="code-highlight")}

            %else:

			  ${h.pygmentize(c.file,linenos=True,anchorlinenos=True,lineanchors='L',cssclass="code-highlight")}

            %endif

		%else:

			${_('File is too big to display')} ${h.link_to(_('show as raw'),

		%endif

     %endif

	</div>

</div>

<script type="text/javascript">

YUE.onDOMReady(function(){

    function highlight_lines(lines){

        for(pos in lines){

          YUD.setStyle('L'+lines[pos],'background-color','#FFFFBE');

        }

    }

    page_highlights = location.href.substring(location.href.indexOf('#')+1).split('L');

    if (page_highlights.length == 2){

       highlight_ranges  = page_highlights[1].split(",");

       var h_lines = [];

       for (pos in highlight_ranges){

            var _range = highlight_ranges[pos].split('-');

            if(_range.length == 2){

                var start = parseInt(_range[0]);

                var end = parseInt(_range[1]);

                if (start < end){

                    for(var i=start;i<=end;i++){

                        h_lines.push(i);

                    }

                }

            }

            else{

                h_lines.push(parseInt(highlight_ranges[pos]));

            }

      }

    highlight_lines(h_lines);

    //remember original location

    var old_hash  = location.href.substring(location.href.indexOf('#'));

    // this makes a jump to anchor moved by 3 posstions for padding

    window.location.hash = '#L'+Math.max(parseInt(h_lines[0])-3,1);

    //sets old anchor

    window.location.hash = old_hash;

    }

    YUE.on('show_rev','click',function(e){

    	YUE.preventDefault(e);

        var cs = YUD.get('diff1').value;

        %if c.annotate:

          var url = "${h.url('files_annotate_home',repo_name=c.repo_name,revision='__CS__',f_path=c.f_path)}".replace('__CS__',cs);

        %else:

          var url = "${h.url('files_home',repo_name=c.repo_name,revision='__CS__',f_path=c.f_path)}".replace('__CS__',cs);

        %endif

        window.location = url;

    });

    YUE.on('hlcode','mouseup',getSelectionLink("${_('Selection link')}"))

   });

</script>