# coding: utf-8

from django.shortcuts import render_to_response
from django.http import HttpResponseRedirect, HttpResponse
from django.template import RequestContext
from juser.models import User, UserGroup, DEPT
from jasset.models import Asset, BisGroup
from jperm.models import Perm, SudoPerm, CmdGroup, DeptPerm
from django.core.paginator import Paginator, EmptyPage, InvalidPage
from django.db.models import Q
from jumpserver.views import LDAP_ENABLE, ldap_conn, CONF, page_list_return, pages
from jumpserver.api import user_perm_asset_api, require_admin, require_super_user, require_login


if LDAP_ENABLE:
    LDAP_HOST_URL = CONF.get('ldap', 'host_url')
    LDAP_BASE_DN = CONF.get('ldap', 'base_dn')
    LDAP_ROOT_DN = CONF.get('ldap', 'root_dn')
    LDAP_ROOT_PW = CONF.get('ldap', 'root_pw')


def user_asset_cmd_groups_get(user_groups_select='', asset_groups_select='', cmd_groups_select=''):
    user_groups_select_list = []
    asset_groups_select_list = []
    cmd_groups_select_list = []

    for user_group_id in user_groups_select:
        user_groups_select_list.append(UserGroup.objects.get(id=user_group_id))

    for asset_group_id in asset_groups_select:
        asset_groups_select_list.append(BisGroup.objects.get(id=asset_group_id))

    for cmd_group_id in cmd_groups_select:
        cmd_groups_select_list.append(CmdGroup.objects.get(id=cmd_group_id))

    return user_groups_select_list, asset_groups_select_list, cmd_groups_select_list


@require_admin
def perm_add(request):
    header_title, path1, path2 = u'主机授权添加', u'授权管理', u'授权添加'

    if request.method == 'GET':
        user_groups = UserGroup.objects.filter(id__gt=2)
        asset_groups = BisGroup.objects.all()

    else:
        name = request.POST.get('name', '')
        user_groups_select = request.POST.getlist('user_groups_select')
        asset_groups_select = request.POST.getlist('asset_groups_select')
        comment = request.POST.get('comment', '')

        user_groups, asset_groups = user_asset_cmd_groups_get(user_groups_select, asset_groups_select, '')[0:2]

        perm = Perm(name=name, comment=comment)
        perm.save()

        perm.user_group = user_groups
        perm.asset_group = asset_groups
        msg = '添加成功'
    return render_to_response('jperm/perm_add.html', locals(), context_instance=RequestContext(request))


def dept_add_asset(dept_id, asset_list):
    dept = DEPT.objects.filter(id=dept_id)
    if dept:
        dept = dept[0]
        old_perm_asset = [perm.asset for perm in dept.deptperm_set.all()]
        new_perm_asset = []
        for asset_id in asset_list:
            asset = Asset.objects.filter(id=asset_id)
            new_perm_asset.extend(asset)

        asset_add = [asset for asset in new_perm_asset if asset not in old_perm_asset]
        asset_del = [asset for asset in old_perm_asset if asset not in new_perm_asset]

        for asset in asset_del:
            DeptPerm.objects.filter(dept=dept, asset=asset).delete()
        for asset in asset_add:
            DeptPerm(dept=dept, asset=asset).save()


@require_super_user
def dept_perm_edit(request):
    header_title, path1, path2 = u'部门授权添加', u'授权管理', u'部门授权添加'
    if request.method == 'GET':
        dept_id = request.GET.get('id', '')
        dept = DEPT.objects.filter(id=dept_id)
        if dept:
            dept = dept[0]
            asset_all = Asset.objects.all()
            asset_select = [perm.asset for perm in dept.deptperm_set.all()]
            assets = [asset for asset in asset_all if asset not in asset_select]
    else:
        dept_id = request.POST.get('dept_id')
        asset_select = request.POST.getlist('asset_select')
        dept_add_asset(dept_id, asset_select)
        return HttpResponseRedirect('/jperm/dept_perm_list/')
    return render_to_response('jperm/dept_perm_edit.html', locals(), context_instance=RequestContext(request))


@require_admin
def perm_list(request):
    header_title, path1, path2 = u'小组授权', u'授权管理', u'授权详情'
    keyword = request.GET.get('search', '')
    if keyword:
        contact_list = UserGroup.objects.filter(Q(name__icontains=keyword) | Q(comment__icontains=keyword))
    else:
        contact_list = UserGroup.objects.all().order_by('name')

    contact_list, p, contacts, page_range, current_page, show_first, show_end = pages(contact_list, request)
    return render_to_response('jperm/perm_list.html', locals(), context_instance=RequestContext(request))


@require_super_user
def dept_perm_list(request):
    header_title, path1, path2 = '查看部门', '授权管理', '部门授权'
    keyword = request.GET.get('search')
    if keyword:
        contact_list = DEPT.objects.filter(Q(name__icontains=keyword) | Q(comment__icontains=keyword)).order_by('name')
    else:
        contact_list = DEPT.objects.filter(id__gt=1)

    contact_list, p, contacts, page_range, current_page, show_first, show_end = pages(contact_list, request)

    return render_to_response('jperm/dept_perm_list.html', locals(), context_instance=RequestContext(request))


def perm_group_update(user_group_id, asset_groups_id_list):
    user_group = UserGroup.objects.filter(id=user_group_id)
    if user_group:
        user_group = user_group[0]
        old_asset_group = [perm.asset_group for perm in user_group.perm_set.all()]
        new_asset_group = []

        for asset_group_id in asset_groups_id_list:
            new_asset_group.extend(BisGroup.objects.filter(id=asset_group_id))

        del_asset_group = [asset_group for asset_group in old_asset_group if asset_group not in new_asset_group]
        add_asset_group = [asset_group for asset_group in new_asset_group if asset_group not in old_asset_group]

        for asset_group in del_asset_group:
            Perm.objects.filter(user_group=user_group, asset_group=asset_group).delete()

        for asset_group in add_asset_group:
            Perm(user_group=user_group, asset_group=asset_group).save()


@require_super_user
def perm_edit(request):
    if request.method == 'GET':
        header_title, path1, path2 = u'编辑授权', u'授权管理', u'授权编辑'
        user_group_id = request.GET.get('id', '')
        user_group = UserGroup.objects.filter(id=user_group_id)
        if user_group:
            user_group = user_group[0]
            asset_groups_all = BisGroup.objects.all()
            asset_groups_select = [perm.asset_group for perm in user_group.perm_set.all()]
            asset_groups = [asset_group for asset_group in asset_groups_all if asset_group not in asset_groups_select]
    else:
        user_group_id = request.POST.get('user_group_id')
        asset_group_id_list = request.POST.getlist('asset_groups_select')
        perm_group_update(user_group_id, asset_group_id_list)

        return HttpResponseRedirect('/jperm/perm_list/')
    return render_to_response('jperm/perm_edit.html', locals(), context_instance=RequestContext(request))


@require_admin
def perm_detail(request):
    header_title, path1, path2 = u'编辑授权', u'授权管理', u'授权详情'
    perm_id = request.GET.get('id')
    perm = Perm.objects.filter(id=perm_id)
    if perm:
        perm = perm[0]
        user_groups = perm.user_group.all()
        asset_groups = perm.asset_group.all()

        users_list = []
        assets_list = []

        for user_group in user_groups:
            users_list.extend(user_group.user_set.all())
        for asset_group in asset_groups:
            assets_list.extend(asset_group.asset_set.all())

    return render_to_response('jperm/perm_detail.html', locals(), context_instance=RequestContext(request))


@require_admin
def perm_del(request):
    perm_id = request.GET.get('id')
    perm = Perm.objects.filter(id=perm_id)
    if perm:
        perm = perm[0]
        perm.delete()
    return HttpResponseRedirect('/jperm/perm_list/')


@require_admin
def perm_asset_detail(request):
    header_title, path1, path2 = u'用户授权主机', u'权限管理', u'用户主机详情'
    user_id = request.GET.get('id')
    user = User.objects.filter(id=user_id)
    if user:
        user = user[0]
        assets_list = user_perm_asset_api(user.username)
    return render_to_response('jperm/perm_asset_detail.html', locals(), context_instance=RequestContext(request))


def sudo_db_add(name, user_runas, user_groups_select, asset_groups_select, cmd_groups_select, comment):
    user_groups_select_list, asset_groups_select_list, cmd_groups_select_list = \
        user_asset_cmd_groups_get(user_groups_select, asset_groups_select, cmd_groups_select)

    sudo_perm = SudoPerm(name=name, user_runas=user_runas, comment=comment)
    sudo_perm.save()
    sudo_perm.user_group = user_groups_select_list
    sudo_perm.asset_group = asset_groups_select_list
    sudo_perm.cmd_group = cmd_groups_select_list


def sudo_db_update(sudo_perm_id, name, user_runas, user_groups_select, asset_groups_select, cmd_groups_select, comment):
    user_groups_select_list, asset_groups_select_list, cmd_groups_select_list = \
        user_asset_cmd_groups_get(user_groups_select, asset_groups_select, cmd_groups_select)
    sudo_perm = SudoPerm.objects.filter(id=sudo_perm_id)
    if sudo_perm:
        sudo_perm.update(name=name, user_runas=user_runas, comment=comment)
        sudo_perm = sudo_perm[0]
        sudo_perm.user_group = user_groups_select_list
        sudo_perm.asset_group = asset_groups_select_list
        sudo_perm.cmd_group = cmd_groups_select_list


def unicode2str(unicode_list):
    return [str(i) for i in unicode_list]


def sudo_ldap_add(name, users_runas, user_groups_select, asset_groups_select,
                  cmd_groups_select, update=False, old_name=''):
    user_groups_select_list, asset_groups_select_list, cmd_groups_select_list = \
        user_asset_cmd_groups_get(user_groups_select, asset_groups_select, cmd_groups_select)

    users = []
    assets = []
    cmds = []
    users_runas = users_runas.split(',')
    asset_all = False

    for user_group in user_groups_select_list:
        users.extend(user_group.user_set.all())

    for asset_group in asset_groups_select_list:
        if u'ALL' in asset_group.name:
            asset_all = True
            break
        else:
            assets.extend(asset_group.asset_set.all())

    for cmd_group in cmd_groups_select_list:
        cmds.extend(cmd_group.cmd.split(','))

    users_name = [user.username for user in users]
    if asset_all:
        assets_ip = ['ALL']
    else:
        assets_ip = [asset.ip for asset in assets]

    sudo_dn = 'cn=%s,ou=Sudoers,%s' % (name, LDAP_BASE_DN)
    sudo_attr = {'objectClass': ['top', 'sudoRole'],
                 'cn': ['%s' % str(name)],
                 'sudoCommand': unicode2str(cmds),
                 'sudoHost': unicode2str(assets_ip),
                 'sudoOption': ['!authenticate'],
                 'sudoRunAsUser': unicode2str(users_runas),
                 'sudoUser': unicode2str(users_name)}

    if update:
        old_sudo_dn = 'cn=%s,ou=Sudoers,%s' % (old_name, LDAP_BASE_DN)
        ldap_conn.delete(old_sudo_dn)

    ldap_conn.add(sudo_dn, sudo_attr)


@require_admin
def sudo_add(request):
    header_title, path1, path2 = u'Sudo授权', u'权限管理', u'添加Sudo权限'
    user_groups = UserGroup.objects.filter(id__gt=2)
    asset_groups = BisGroup.objects.all()
    cmd_groups = CmdGroup.objects.all()

    if request.method == 'POST':
        name = request.POST.get('name')
        users_runas = request.POST.get('runas', 'root')
        user_groups_select = request.POST.getlist('user_groups_select')
        asset_groups_select = request.POST.getlist('asset_groups_select')
        cmd_groups_select = request.POST.getlist('cmd_groups_select')
        comment = request.POST.get('comment', '')

        sudo_db_add(name, users_runas, user_groups_select, asset_groups_select, cmd_groups_select, comment)
        sudo_ldap_add(name, users_runas, user_groups_select, asset_groups_select, cmd_groups_select)

        msg = '添加成功'
    return render_to_response('jperm/sudo_add.html', locals(), context_instance=RequestContext(request))


@require_admin
def sudo_list(request):
    header_title, path1, path2 = u'Sudo授权', u'权限管理', u'Sudo权限详情'
    contact_list = SudoPerm.objects.all()

    contact_list, p, contacts, page_range, current_page, show_first, show_end = pages(contact_list, request)
    return render_to_response('jperm/sudo_list.html', locals(), context_instance=RequestContext(request))


@require_admin
def sudo_edit(request):
    header_title, path1, path2 = u'Sudo授权', u'授权管理', u'Sudo修改'

    if request.method == 'GET':
        sudo_perm_id = request.GET.get('id', '0')
        sudo_perm = SudoPerm.objects.filter(id=int(sudo_perm_id))
        if sudo_perm:
            user_group_all = UserGroup.objects.filter(id__gt=2)
            asset_group_all = BisGroup.objects.filter()
            cmd_group_all = CmdGroup.objects.all()

            sudo_perm = sudo_perm[0]
            user_group_permed = sudo_perm.user_group.all()
            asset_group_permed = sudo_perm.asset_group.all()
            cmd_group_permed = sudo_perm.cmd_group.all()

            user_groups = [user_group for user_group in user_group_all if user_group not in user_group_permed]
            asset_groups = [asset_group for asset_group in asset_group_all if asset_group not in asset_group_permed]
            cmd_groups = [cmd_group for cmd_group in cmd_group_all if cmd_group not in cmd_group_permed]

            name = sudo_perm.name
            user_runas = sudo_perm.user_runas
            comment = sudo_perm.comment

    else:
        sudo_perm_id = request.POST.get('sudo_perm_id')
        name = request.POST.get('name')
        users_runas = request.POST.get('runas', 'root')
        user_groups_select = request.POST.getlist('user_groups_select')
        asset_groups_select = request.POST.getlist('asset_groups_select')
        cmd_groups_select = request.POST.getlist('cmd_groups_select')
        comment = request.POST.get('comment', '')

        sudo_perm = SudoPerm.objects.get(id=sudo_perm_id)
        old_name = sudo_perm.name
        sudo_db_update(sudo_perm_id, name, users_runas, user_groups_select,
                       asset_groups_select, cmd_groups_select, comment)
        sudo_ldap_add(name, users_runas, user_groups_select, asset_groups_select,
                      cmd_groups_select, update=True, old_name=str(old_name))
        msg = '修改成功'

        return HttpResponseRedirect('/jperm/sudo_list/')

    return render_to_response('jperm/sudo_edit.html', locals(), context_instance=RequestContext(request))


@require_admin
def sudo_detail(request):
    header_title, path1, path2 = u'Sudo授权详情', u'授权管理', u'授权详情'
    sudo_perm_id = request.GET.get('id')
    sudo_perm = SudoPerm.objects.filter(id=sudo_perm_id)
    if sudo_perm:
        sudo_perm = sudo_perm[0]
        user_groups = sudo_perm.user_group.all()
        asset_groups = sudo_perm.asset_group.all()
        cmd_groups = sudo_perm.cmd_group.all()

        users_list = []
        assets_list = []
        cmds_list = []

        for user_group in user_groups:
            users_list.extend(user_group.user_set.all())
        for asset_group in asset_groups:
            assets_list.extend(asset_group.asset_set.all())
        for cmd_group in cmd_groups:
            cmds_list.append({cmd_group.name: cmd_group.cmd.split(',')})

        return render_to_response('jperm/sudo_detail.html', locals(), context_instance=RequestContext(request))


@require_admin
def sudo_del(request):
    sudo_perm_id = request.GET.get('id', '0')
    sudo_perm = SudoPerm.objects.filter(id=int(sudo_perm_id))
    if sudo_perm:
        name = sudo_perm[0].name
        sudo_perm.delete()
        sudo_dn = 'cn=%s,ou=Sudoers,%s' % (name, LDAP_BASE_DN)
        ldap_conn.delete(sudo_dn)
    return HttpResponseRedirect('/jperm/sudo_list/')


@require_admin
def cmd_add(request):
    header_title, path1, path2 = u'sudo命令添加', u'授权管理', u'命令组添加'

    if request.method == 'POST':
        name = request.POST.get('name')
        cmd = ','.join(request.POST.get('cmd').split())
        comment = request.POST.get('comment')

        CmdGroup.objects.create(name=name, cmd=cmd, comment=comment)
        msg = u'命令组添加成功'

        return HttpResponseRedirect('/jperm/cmd_list/')

    return render_to_response('jperm/sudo_cmd_add.html', locals(), context_instance=RequestContext(request))


@require_admin
def cmd_edit(request):
    header_title, path1, path2 = u'sudo命令修改', u'授权管理管理', u'命令组修改'

    cmd_group_id = request.GET.get('id')
    cmd_group = CmdGroup.objects.filter(id=cmd_group_id)

    if cmd_group:
        cmd_group = cmd_group[0]
        cmd_group_id = cmd_group.id
        name = cmd_group.name
        cmd = '\n'.join(cmd_group.cmd.split(','))
        comment = cmd_group.comment

    if request.method == 'POST':
        cmd_group_id = request.POST.get('cmd_group_id')
        name = request.POST.get('name')
        cmd = ','.join(request.POST.get('cmd').split())
        comment = request.POST.get('comment')

        cmd_group = CmdGroup.objects.filter(id=cmd_group_id)
        if cmd_group:
            cmd_group.update(name=name, cmd=cmd, comment=comment)
            return HttpResponseRedirect('/jperm/cmd_list/')
    return render_to_response('jperm/sudo_cmd_add.html', locals(), context_instance=RequestContext(request))


@require_admin
def cmd_list(request):
    header_title, path1, path2 = u'sudo命令查看', u'权限管理', u'Sudo命令添加'

    cmd_groups = contact_list = CmdGroup.objects.all()
    p = paginator = Paginator(contact_list, 10)

    try:
        page = int(request.GET.get('page', '1'))
    except ValueError:
        page = 1

    try:
        contacts = paginator.page(page)
    except (EmptyPage, InvalidPage):
        contacts = paginator.page(paginator.num_pages)
    return render_to_response('jperm/sudo_cmd_list.html', locals(), context_instance=RequestContext(request))


@require_admin
def cmd_del(request):
    cmd_group_id = request.GET.get('id')
    cmd_group = CmdGroup.objects.filter(id=cmd_group_id)

    if cmd_group:
        cmd_group[0].delete()
    return HttpResponseRedirect('/jperm/cmd_list/')
