# hgweb/hgwebdir_mod.py - Web interface for a directory of repositories.

#

# Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>

# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>

#

# This software may be used and distributed according to the terms

# of the GNU General Public License, incorporated herein by reference.

from mercurial import demandimport; demandimport.enable()

import os, mimetools, cStringIO

from mercurial.i18n import gettext as _

from mercurial import ui, hg, util, templater

from common import get_mtime, staticfile, style_map

from hgweb_mod import hgweb

# This is a stopgap

class hgwebdir(object):

    def __init__(self, config, parentui=None):

        def cleannames(items):

            return [(name.strip(os.sep), path) for name, path in items]

        self.parentui = parentui

        self.motd = None

        self.style = None

        self.repos_sorted = ('name', False)

        if isinstance(config, (list, tuple)):

            self.repos = cleannames(config)

            self.repos_sorted = ('', False)

        elif isinstance(config, dict):

            self.repos = cleannames(config.items())

            self.repos.sort()

        else:

            if isinstance(config, util.configparser):

                cp = config

            else:

                cp = util.configparser()

                cp.read(config)

            self.repos = []

            if cp.has_section('web'):

                if cp.has_option('web', 'motd'):

                    self.motd = cp.get('web', 'motd')

                if cp.has_option('web', 'style'):

                    self.style = cp.get('web', 'style')

            if cp.has_section('paths'):

                self.repos.extend(cleannames(cp.items('paths')))

            if cp.has_section('collections'):

                for prefix, root in cp.items('collections'):

                    for path in util.walkrepos(root):

                        repo = os.path.normpath(path)

                        name = repo

                        if name.startswith(prefix):

                            name = name[len(prefix):]

                        self.repos.append((name.lstrip(os.sep), repo))

            self.repos.sort()

    def run(self):

        if not os.environ.get('GATEWAY_INTERFACE', '').startswith("CGI/1."):

            raise RuntimeError("This function is only intended to be called while running as a CGI script.")

        import mercurial.hgweb.wsgicgi as wsgicgi

        from request import wsgiapplication

        def make_web_app():

            return self

        wsgicgi.launch(wsgiapplication(make_web_app))

    def run_wsgi(self, req):

        def header(**map):

            header_file = cStringIO.StringIO(

                ''.join(tmpl("header", encoding=util._encoding, **map)))

            msg = mimetools.Message(header_file, 0)

            req.header(msg.items())

            yield header_file.read()

        def footer(**map):

            yield tmpl("footer", **map)

        def motd(**map):

            if self.motd is not None:

                yield self.motd

            else:

                yield config('web', 'motd', '')

        parentui = self.parentui or ui.ui(report_untrusted=False)

        def config(section, name, default=None, untrusted=True):

            return parentui.config(section, name, default, untrusted)

        url = req.env['REQUEST_URI'].split('?')[0]

        if not url.endswith('/'):

            url += '/'

        style = self.style

        if style is None:

            style = config('web', 'style', '')

        if req.form.has_key('style'):

            style = req.form['style'][0]

        mapfile = style_map(templater.templatepath(), style)

        tmpl = templater.templater(mapfile, templater.common_filters,

                                   defaults={"header": header,

                                             "footer": footer,

                                             "motd": motd,

                                             "url": url})

        def archivelist(ui, nodeid, url):

            allowed = ui.configlist("web", "allow_archive", untrusted=True)

            for i in [('zip', '.zip'), ('gz', '.tar.gz'), ('bz2', '.tar.bz2')]:

                if i[0] in allowed or ui.configbool("web", "allow" + i[0],

                                                    untrusted=True):

                    yield {"type" : i[0], "extension": i[1],

                           "node": nodeid, "url": url}

        def entries(sortcolumn="", descending=False, **map):

            def sessionvars(**map):

                fields = []

                if req.form.has_key('style'):

                    style = req.form['style'][0]

                    if style != get('web', 'style', ''):

                        fields.append(('style', style))

                separator = url[-1] == '?' and ';' or '?'

                for name, value in fields:

                    yield dict(name=name, value=value, separator=separator)

                    separator = ';'

            rows = []

            parity = 0

            for name, path in self.repos:

                u = ui.ui(parentui=parentui)

                try:

                    u.readconfig(os.path.join(path, '.hg', 'hgrc'))

                except IOError:

                    pass

                def get(section, name, default=None):

                    return u.config(section, name, default, untrusted=True)

                url = ('/'.join([req.env["REQUEST_URI"].split('?')[0], name])

                       .replace("//", "/")) + '/'

                # update time with local timezone

                try:

                    d = (get_mtime(path), util.makedate()[1])

                except OSError:

                    continue

                contact = (get("ui", "username") or # preferred

                           get("web", "contact") or # deprecated

                           get("web", "author", "")) # also

                description = get("web", "description", "")

                name = get("web", "name", name)

                row = dict(contact=contact or "unknown",

                           contact_sort=contact.upper() or "unknown",

                           name=name,

                           name_sort=name,

                           url=url,

                           description=description or "unknown",

                           description_sort=description.upper() or "unknown",

                           lastchange=d,

                           lastchange_sort=d[1]-d[0],

                           sessionvars=sessionvars,

                           archives=archivelist(u, "tip", url))

                if (not sortcolumn

                    or (sortcolumn, descending) == self.repos_sorted):

                    # fast path for unsorted output

                    row['parity'] = parity

                    parity = 1 - parity

                    yield row

                else:

                    rows.append((row["%s_sort" % sortcolumn], row))

            if rows:

                rows.sort()

                if descending:

                    rows.reverse()

                for key, row in rows:

                    row['parity'] = parity

                    parity = 1 - parity

                    yield row

        virtual = req.env.get("PATH_INFO", "").strip('/')

        if virtual.startswith('static/'):

            static = os.path.join(templater.templatepath(), 'static')

            fname = virtual[7:]

            req.write(staticfile(static, fname, req) or

                      tmpl('error', error='%r not found' % fname))

        elif virtual:

            while virtual:

                real = dict(self.repos).get(virtual)

                if real:

                    break

                up = virtual.rfind('/')

                if up < 0:

                    break

                virtual = virtual[:up]

            if real:

                req.env['REPO_NAME'] = virtual

                try:

                    repo = hg.repository(parentui, real)

                    hgweb(repo).run_wsgi(req)

                except IOError, inst:

                    req.write(tmpl("error", error=inst.strerror))

                except hg.RepoError, inst:

                    req.write(tmpl("error", error=str(inst)))

            else:

                req.write(tmpl("notfound", repo=virtual))

        else:

            if req.form.has_key('static'):

                static = os.path.join(templater.templatepath(), "static")

                fname = req.form['static'][0]

                req.write(staticfile(static, fname, req)

                          or tmpl("error", error="%r not found" % fname))

            else:

                sortable = ["name", "description", "contact", "lastchange"]

                sortcolumn, descending = self.repos_sorted

                if req.form.has_key('sort'):

                    sortcolumn = req.form['sort'][0]

                    descending = sortcolumn.startswith('-')

                    if descending:

                        sortcolumn = sortcolumn[1:]

                    if sortcolumn not in sortable:

                        sortcolumn = ""

                sort = [("sort_%s" % column,

                         "%s%s" % ((not descending and column == sortcolumn)

                                   and "-" or "", column))

                        for column in sortable]

                req.write(tmpl("index", entries=entries,

                               sortcolumn=sortcolumn, descending=descending,

                               **dict(sort)))