import settings
from django import forms, http, template
from django.contrib.auth.decorators import login_required
from django.shortcuts import get_object_or_404, render_to_response
from django.http import HttpResponse

import os, commands

from models import *

try:
    GITCOMMAND = settings.GITCOMMAND
except AttributeError:
    GITCOMMAND='git'


# Create your views here.

def repo_info(request, repo,branch=None):
    therepo = get_object_or_404(Repository, slug=repo)
    (GITPREFIX, heads, tags) = therepo.scan()
    
    branches = commands.getoutput(GITPREFIX + ' branch')
    filelist = commands.getoutput(GITPREFIX + ' ls-files')
    shortlog = therepo.shortlog()

    return render_to_response('git_browse/repository_info.html', \
                      dict(object=therepo, \
                            filelist=filelist, \
                            tags=tags, \
                            heads=heads, \
                            shortlog=shortlog,))

def view_tree(request, repo, hash=None,branch=None):
    therepo = get_object_or_404(Repository, slug=repo)
    (GITPREFIX, heads, tags) = therepo.scan()
    
    if(hash == None): 
        head_ref = commands.getoutput('cd ' + therepo.path + '; cat HEAD')
        head_ref = head_ref.split()[1]
        hash = commands.getoutput('cd ' +  therepo.path + '; cat ' + head_ref)
    
    tree_ls = commands.getoutput(GITPREFIX + ' ls-tree ' + hash)
    tree_objs = list()
    blob_objs = list()
    for line in tree_ls.splitlines():
        l = line.split()
        if len(l) < 4:
            continue
        if l[1] == 'tree':
            tree_objs.append(tree_from_str(line))
        if l[1] == 'blob':
            tree_objs.append(blob_from_str(line))

    return render_to_response('git_browse/tree.html',
                      dict(object=therepo,
                            blob_objs=blob_objs,
                            tree_objs=tree_objs,
                            hash=hash,
                            all_objs=tree_objs+blob_objs,))

def view_log(request, repo, hash=None):
    therepo = get_object_or_404(Repository, slug=repo)
    (GITPREFIX, heads, tags) = therepo.scan()
    
    logtxt = commands.getoutput(GITPREFIX + ' log | cat')
    log_items = logtxt.split('\ncommit ')
    if (log_items[0] == ''):
        log_items.pop(0)
    if (log_items[0].startswith('commit ')):
        log_items[0] = log_items[0][7:]
    log_objs = list()
    for li in log_items:
        logobj = dict()
        lines = li.splitlines()
        if len(lines) < 3: continue
        logobj['hash'] = lines[0]
        logobj['author'] = lines[1][8:]
        logobj['date'] = lines[2][8:]
        logobj['comment'] = ''
        for l in lines[4:]:
            if l.startswith('    '):
                logobj['comment'] += l[4:] + '\n'
        log_objs.append(logobj)
    
    return render_to_response('git_browse/full_log.html',
                      dict(object=therepo,
                            log_objs=log_objs,))

def view_blob(request, repo, hash):
    therepo = get_object_or_404(Repository, slug=repo)
    (GITPREFIX, heads, tags) = therepo.scan()
    b = Blob(id=hash,repo=therepo)
    b.update()

    return render_to_response('git_browse/blob.html',
                      dict(object=therepo,
                        heads=heads,
                        tags=tags,
                        hash=b.id,
                        size=b.size,
                        contents=b.contents))

def view_commit(request, repo, hash):
    therepo = get_object_or_404(Repository, slug=repo)
    (GITPREFIX, heads, tags) = therepo.scan()
    c = Commit(id=hash,repo=therepo)
    c.update()

    try:
        from pygments import highlight
        from pygments.lexers import DiffLexer
        from pygments.formatters import HtmlFormatter
        c.pretty_diff = highlight(c.rawdiff, DiffLexer(), HtmlFormatter())
    except: pass

    return render_to_response('git_browse/commit.html',
                      dict(object=therepo, heads=heads, tags=tags,
                      commit=c))

def view_obj(request, repo, hash, branch=None):
    therepo = get_object_or_404(Repository, slug=repo)
    (GITPREFIX, heads, tags) = therepo.scan()
    
    obj_type = commands.getoutput(GITPREFIX + ' cat-file -t  ' + hash)
    obj_contents = commands.getoutput(GITPREFIX + ' cat-file -p  ' + hash)
    obj_size = commands.getoutput(GITPREFIX + ' cat-file -s  ' + hash)

    return render_to_response('git_browse/obj.html',
                      dict(object=therepo,
                        hash=hash,
                        type=obj_type,
                        size=float(obj_size),
                        contents=obj_contents))