from kallithea.model.forms import PullRequestForm, PullRequestPostForm

from kallithea.model.pull_request import CreatePullRequestAction, CreatePullRequestIterationAction, PullRequestModel

log = logging.getLogger(__name__)

def _get_reviewer(user_id):

    """Look up user by ID and validate it as a potential reviewer."""

    try:

        user = db.User.get(int(user_id))

    except ValueError:

        user = None

    if user is None or user.is_default_user:

        webutils.flash(_('Invalid reviewer "%s" specified') % user_id, category='error')

        raise HTTPBadRequest()

    return user

class PullrequestsController(BaseRepoController):

    def _get_repo_refs(self, repo, rev=None, branch=None, branch_rev=None):

        the selectors in pullrequest.html

        rev: a revision that must be in the list somehow and selected by default

        branch: a branch that must be in the list and selected by default - even if closed

        branch_rev: a revision of which peers should be preferred and available."""

        # list named branches that has been merged to this named branch - it should probably merge back

        peers = []

        if branch_rev:

            # a revset not restricting to merge() would be better

            # (especially because it would get the branch point)

            # ... but is currently too expensive

            # including branches of children could be nice too

            peerbranches = set()

            for i in repo._repo.revs(

                b"sort(parents(branch(id(%s)) and merge()) - branch(id(%s)), -rev)",

                ascii_bytes(branch_rev), ascii_bytes(branch_rev),

            ):

                for abranch in repo.get_changeset(i).branches:

                    if abranch not in peerbranches:

                        n = 'branch:%s:%s' % (abranch, repo.get_changeset(abranch).raw_id)

                        peers.append((n, abranch))

                        peerbranches.add(abranch)

                selected = n

        tags = []

        for tag, tagrev in repo.tags.items():

            if tag == 'tip':

                continue

            n = 'tag:%s:%s' % (tag, tagrev)

            tags.append((n, tag))

            # note: even if rev == tagrev, don't select the static tag - it must be chosen explicitly

        # prio 1: rev was selected as existing entry above

        # prio 2: create special entry for rev; rev _must_ be used

        specials = []

        if rev and selected is None:

            selected = 'rev:%s:%s' % (rev, rev)

            specials = [(selected, '%s: %s' % (_("Changeset"), rev[:12]))]

        # prio 3: most recent peer branch

        if peers and not selected:

            selected = peers[0][0]

        # prio 4: tip revision

        if not selected:

                if tipbranch:

                    selected = 'branch:%s:%s' % (tipbranch, tiprev)

                else:

                    selected = 'tag:null:' + repo.EMPTY_CHANGESET

                    tags.append((selected, 'null'))

            else:  # Git

                if not repo.branches:

                    selected = ''  # doesn't make sense, but better than nothing

                elif 'master' in repo.branches:

                    selected = 'branch:master:%s' % repo.branches['master']

                else:

                    k, v = list(repo.branches.items())[0]

                    selected = 'branch:%s:%s' % (k, v)

        groups = [(specials, _("Special")),

                  (peers, _("Peer branches")),

                  (bookmarks, _("Bookmarks")),

                  (branches, _("Branches")),

                  (tags, _("Tags")),

                  ]

        return [g for g in groups if g[0]], selected

    def _is_allowed_to_change_status(self, pull_request):

        if pull_request.is_closed():

            return False

        owner = request.authuser.user_id == pull_request.owner_id

        reviewer = db.PullRequestReviewer.query() \

            .filter(db.PullRequestReviewer.pull_request == pull_request) \

            .filter(db.PullRequestReviewer.user_id == request.authuser.user_id) \

def short_id(x):

    return x[:12]

def hide_credentials(x):

    return ''.join(credentials_filter(x))

def show_id(cs):

    """

    Configurable function that shows ID

    by default it's r123:fffeeefffeee

    :param cs: changeset instance

    """

    def_len = safe_int(kallithea.CONFIG.get('show_sha_length', 12))

    show_rev = asbool(kallithea.CONFIG.get('show_revision_number', False))

    raw_id = cs.raw_id[:def_len]

    if show_rev:

        return 'r%s:%s' % (cs.revision, raw_id)

    else:

        return raw_id

@cache_region('long_term', 'user_attr_or_none')

def user_attr_or_none(author, show_attr):

    """Try to match email part of VCS committer string with a local user and return show_attr

    - or return None if user not found"""

    email = author_email(author)

    if email:

        user = db.User.get_by_email(email)

        if user is not None:

            return getattr(user, show_attr)

    return None

def email_or_none(author):

    """Try to match email part of VCS committer string with a local user.

    Return primary email of user, email part of the specified author name, or None."""

    if not author:

        return None

    email = user_attr_or_none(author, 'email')

    if email is not None:

        return email # always use user's main email address - not necessarily the one used to find user

    # extract email from the commit string

    email = author_email(author)

    if email:

                                    <i class="icon-diff-${op}"></i>

                                    ${h.link_to(path, '#%s' % fid)}

                                </span>

                                <div class="changes">${h.fancy_file_stats(stats)}</div>

                            </div>

                        %endfor

                    %endfor

                </div>

        </div>

    </div>

    <%namespace name="comment" file="/changeset/changeset_file_comment.html"/>

    <%namespace name="diff_block" file="/changeset/diff_block.html"/>

    ${diff_block.diff_block_js()}

    %for cs in c.cs_ranges:

        <div class="panel-body">

          ## diff block

          <div class="h3">

          ${h.gravatar_div(h.email_or_none(cs.author), size=20)}

          <a data-toggle="tooltip" title="${cs.message}" href="${h.url('changeset_home',repo_name=c.cs_repo.repo_name,revision=cs.raw_id)}">${h.show_id(cs)}</a>

            <div class="right">

              <span>

                %if len(cs.parents)>1:

                <span class="label label-merge">${_('Merge')}</span>

                %endif

                  %for book in cs.bookmarks:

                  <span class="label label-bookmark" title="${_('Bookmark %s') % book}">

                     ${h.link_to(book,h.url('changeset_home',repo_name=c.cs_repo.repo_name,revision=cs.raw_id))}

                  </span>

                  %endfor

                %endif

                %for tag in cs.tags:

                    <span class="label label-tag" title="${_('Tag %s') % tag}">

                    ${h.link_to(tag,h.url('changeset_home',repo_name=c.cs_repo.repo_name,revision=cs.raw_id))}</span>

                %endfor

                %for branch in cs.branches:

                  <span class="label label-branch" title="${_('Branch %s') % branch}">

                    ${h.link_to(branch,h.url('changeset_home',repo_name=c.cs_repo.repo_name,revision=cs.raw_id))}

                  </span>

                %endfor

              </span>

            </div>

          </div>

          <% a_rev, cs_rev, file_diff_data = c.changes[cs.raw_id] %>

          ${diff_block.diff_block(c.repo_name, 'rev', a_rev, a_rev,

                                  c.repo_name, 'rev', cs_rev, cs_rev, file_diff_data)}

        </div>

    %endfor

</div>

# ${c.db_repo_scm_instance.alias.upper()} changeset patch

# User ${c.changeset.author |n}

# Date ${c.changeset.date}

# Node ID ${c.changeset.raw_id}

${c.parent_tmpl}

${c.changeset.message |n}

From ${c.changeset.raw_id} ${c.changeset.date}

From: ${c.changeset.author |n}

Date: ${c.changeset.date}

Subject: [PATCH] ${c.changeset.message |n}

---

%endif

${c.diff|n}

              ${h.link_to_ref(c.pull_request.org_repo.repo_name, c.cs_ref_type, c.cs_ref_name, c.cs_rev)}

              %if c.cs_ref_type != 'branch':

                ${_('on')} ${h.link_to_ref(c.pull_request.org_repo.repo_name, 'branch', c.cs_branch_name)}

              %endif

            </div>

          </div>

        </div>

        <div class="form-group">

          <label>${_('Target')}:</label>

          <div>

            %if c.is_range:

              ${_("This is just a range of changesets and doesn't have a target or a real merge ancestor.")}

            %else:

              ${h.link_to_ref(c.pull_request.other_repo.repo_name, c.a_ref_type, c.a_ref_name)}

              ## we don't know other rev - c.a_rev is ancestor and not necessarily on other_name_branch branch

            %endif

          </div>

        </div>

        <div class="form-group">

          <label>${_('Pull changes')}:</label>

          <div>

            %if c.cs_ranges:

              <div>

               ## TODO: use cs_ranges[-1] or org_ref_parts[1] in both cases?

                 <span>hg pull ${c.pull_request.org_repo.clone_url(clone_uri_tmpl=c.clone_uri_tmpl)} -r ${c.cs_ranges[-1].short_id}</span>

                 <span>git pull ${c.pull_request.org_repo.clone_url(clone_uri_tmpl=c.clone_uri_tmpl)} ${c.pull_request.org_ref_parts[1]}</span>

               %endif

              </div>

            %endif

          </div>

        </div>

        <div class="form-group">

          <label>${_('Created on')}:</label>

          <div>

              <div>${h.fmt_date(c.pull_request.created_on)}</div>

          </div>

        </div>

        <div class="form-group">

          <label>${_('Owner')}:</label>

          <div class="pr-not-edit">

                  ${h.gravatar_div(c.pull_request.owner.email, size=20)}

                  <span>${c.pull_request.owner.full_name_and_username}</span><br/>

                  <span><a href="mailto:${c.pull_request.owner.email}">${c.pull_request.owner.email}</a></span><br/>

          </div>

          <div class="pr-do-edit" style="display:none">

               ${h.text('owner', class_='form-control', value=c.pull_request.owner.username, placeholder=_('Type name of user'))}

          </div>

        </div>

            ${_('Quick Start')}

        %endif

        </div>

    </div>

    <div class="panel-body">

        <div id="shortlog_data">

            %if c.cs_pagination:

                ${changelog_table.changelog(c.repo_name, c.cs_pagination, c.cs_statuses, c.cs_comments, show_checkbox=False)}

                ${c.cs_pagination.pager()}

            %else:

                %if h.HasRepoPermissionLevel('write')(c.repo_name):

                <h4>${_('Add or upload files directly via Kallithea')}</h4>

                <div>

                  <div id="add_node_id" class="add_node">

                      <a class="btn btn-default btn-xs" href="${h.url('files_add_home',repo_name=c.repo_name,revision=0,f_path='', anchor='edit')}">${_('Add New File')}</a>

                  </div>

                </div>

                %endif

                <h4>${_('Push new repository')}</h4>

                <pre>

${c.db_repo_scm_instance.alias} clone ${c.clone_repo_url}

${c.db_repo_scm_instance.alias} add README # add first file

${c.db_repo_scm_instance.alias} commit -m "Initial" # commit with message

                </pre>

                <h4>${_('Existing repository?')}</h4>

                <pre>

git remote add origin ${c.clone_repo_url}

git push -u origin master

                %else:

hg push ${c.clone_repo_url}

                %endif

                </pre>

            %endif

        </div>

    </div>

</div>

%if c.readme_data:

<div id="readme" class="anchor">

</div>

<div class="panel panel-primary">

    <div class="panel-heading" title="${_('Readme file from revision %s:%s') % (c.db_repo.landing_rev[0], c.db_repo.landing_rev[1])}">

        <div class="panel-title">

            <a href="${h.url('files_home',repo_name=c.repo_name,revision='tip',f_path=c.readme_file)}">${c.readme_file}</a>

        </div>

    </div>

    <div class="readme panel-body">

        ${c.readme_data|n}

    </div>

</div>