#
# Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
# Copyright 2005-2007 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.

import os, mimetypes
import webutil
from mercurial import revlog
from mercurial.util import binary
from mercurial.repo import RepoError
from common import staticfile, ErrorResponse, HTTP_OK, HTTP_NOT_FOUND

# __all__ is populated with the allowed commands. Be sure to add to it if
# you're adding a new command, or the new command won't work.

__all__ = [
   'log', 'rawfile', 'file', 'changelog', 'shortlog', 'changeset', 'rev',
   'manifest', 'tags', 'summary', 'filediff', 'diff', 'annotate', 'filelog',
   'archive', 'static',
]

def log(web, req, tmpl):
    if 'file' in req.form and req.form['file'][0]:
        return filelog(web, req, tmpl)
    else:
        return changelog(web, req, tmpl)

def rawfile(web, req, tmpl):
    path = webutil.cleanpath(web.repo, req.form.get('file', [''])[0])
    if not path:
        content = web.manifest(tmpl, webutil.changectx(web.repo, req), path)
        req.respond(HTTP_OK, web.ctype)
        return content

    try:
        fctx = webutil.filectx(web.repo, req)
    except revlog.LookupError, inst:
        try:
            content = web.manifest(tmpl, webutil.changectx(web.repo, req), path)
            req.respond(HTTP_OK, web.ctype)
            return content
        except ErrorResponse:
            raise inst

    path = fctx.path()
    text = fctx.data()
    mt = mimetypes.guess_type(path)[0]
    if mt is None or binary(text):
        mt = mt or 'application/octet-stream'

    req.respond(HTTP_OK, mt, path, len(text))
    return [text]

def file(web, req, tmpl):
    path = webutil.cleanpath(web.repo, req.form.get('file', [''])[0])
    if path:
        try:
            return web.filerevision(tmpl, webutil.filectx(web.repo, req))
        except revlog.LookupError, inst:
            pass

    try:
        return web.manifest(tmpl, webutil.changectx(web.repo, req), path)
    except ErrorResponse:
        raise inst

def changelog(web, req, tmpl, shortlog = False):
    if 'node' in req.form:
        ctx = webutil.changectx(web.repo, req)
    else:
        if 'rev' in req.form:
            hi = req.form['rev'][0]
        else:
            hi = web.repo.changelog.count() - 1
        try:
            ctx = web.repo.changectx(hi)
        except RepoError:
            return web.search(tmpl, hi) # XXX redirect to 404 page?

    return web.changelog(tmpl, ctx, shortlog = shortlog)

def shortlog(web, req, tmpl):
    return changelog(web, req, tmpl, shortlog = True)

def changeset(web, req, tmpl):
    return web.changeset(tmpl, webutil.changectx(web.repo, req))

rev = changeset

def manifest(web, req, tmpl):
    return web.manifest(tmpl, webutil.changectx(web.repo, req),
                        webutil.cleanpath(web.repo, req.form['path'][0]))

def tags(web, req, tmpl):
    return web.tags(tmpl)

def summary(web, req, tmpl):
    return web.summary(tmpl)

def filediff(web, req, tmpl):
    return web.filediff(tmpl, webutil.filectx(web.repo, req))

diff = filediff

def annotate(web, req, tmpl):
    return web.fileannotate(tmpl, webutil.filectx(web.repo, req))

def filelog(web, req, tmpl):
    return web.filelog(tmpl, webutil.filectx(web.repo, req))

def archive(web, req, tmpl):
    type_ = req.form['type'][0]
    allowed = web.configlist("web", "allow_archive")
    if (type_ in web.archives and (type_ in allowed or
        web.configbool("web", "allow" + type_, False))):
        web.archive(tmpl, req, req.form['node'][0], type_)
        return []
    raise ErrorResponse(HTTP_NOT_FOUND, 'unsupported archive type: %s' % type_)

def static(web, req, tmpl):
    fname = req.form['file'][0]
    # a repo owner may set web.static in .hg/hgrc to get any file
    # readable by the user running the CGI script
    static = web.config("web", "static",
                        os.path.join(web.templatepath, "static"),
                        untrusted=False)
    return [staticfile(static, fname, req)]