#

# See LICENCE for detail

# Copyright (c) 2014 IRI

#

import json

import urllib

from flask.ext.admin import Admin

from flask.ext.admin.contrib.sqla import ModelView

from flask.ext.admin.contrib.sqla.form import AdminModelConverter

from flask.ext.admin.contrib.sqla.filters import BooleanEqualFilter

from flask.ext.admin.model.form import InlineFormAdmin, converts

from jinja2 import Markup

from wtforms import fields

from wtforms.ext.dateutil import fields as dateutil_fields

import database

import models

import config

from webapp import app

admin = Admin(app)

def build_ldt_url(view, context, model, name):

    # `view` is current administrative view

    # `context` is instance of jinja2.runtime.Context

    # `model` is model instance

    # `name` is property name

    if not model.project_id \

        or not model.categories_json \

        or not isinstance(model.categories_json, dict) \

        or not getattr(config,'LDT_PLATFORM_BASE_URL',None):

        return ''

    output = []

    for c in model.categories_json.get("categories",[]):

        if "subcategories" in c and len(c["subcategories"])>0:

            for sc in c["subcategories"]:

                output.append({"name": sc["code"],"keywords": [ sc["label"] ], "color" : sc["color"] })

        else:

            output.append({"name": c["code"],"keywords": [ c["label"] ], "color" : c["color"] })

    base_url = getattr(config,'LDT_PLATFORM_BASE_URL','') + "/ldt/embediframe/?"

    url_query_params = {'project_id': model.project_id, 'polemic': 'all', 'polemics_list': json.dumps(output, separators=(',',':'))}

    url = base_url + urllib.urlencode(url_query_params)

    return Markup("<a href=\"%s\" target=\"_blank\">%s</a>" % (url,url[:80]+"..."))

class EventView(ModelView):

    column_searchable_list = ('code', 'label')

    column_list = ('code', 'label', 'start_date', 'active')

    column_filters = ('code', 'label', 'start_date', 'active')

    form_create_rules = ('code', 'label', 'description', 'start_date')

    inline_models = (models.EventSession,)

    #form_edit_rules = ('label', 'description', 'start_date', 'active', 'code')

    def __init__(self, session, **kwargs):

        super(EventView, self).__init__(models.Event, session, **kwargs)

class DictToJSONField(fields.TextAreaField):

    def process_data(self, value):

        if value is None:

            value = {}

        self.data = json.dumps(value, indent=2)

    def process_formdata(self, valuelist):

        if valuelist:

            self.data = json.loads(valuelist[0])

        else:

class JsonAdminConverter(AdminModelConverter):

    @converts('JSON')

    def conv_JSON(self, field_args, **extra):

        return DictToJSONField(**field_args)

class EventSessionView(ModelView):

    column_default_sort = ( models.Event.code, True)

    column_sortable_list = (('event', models.Event.code),)

    column_auto_select_related = True

    column_list = ('event', 'project_id', 'order', 'categories_json', 'url')

    column_filters = ('event',)

    column_formatters = {'url': build_ldt_url, 'categories_json': lambda v, c, m, p: json.dumps(m.categories_json)[:80] if m.categories_json else ''}

    form_widget_args = {

        'categories_json': {

            'rows': 10,

            'class': 'input-xlarge'

        },

        'start_ts': {

            'class': 'input-xlarge'

        },

        'project_id': {

            'class': 'input-xlarge'

        }

    }

    model_form_converter=JsonAdminConverter

    def __init__(self, session, **kwargs):

        super(EventSessionView, self).__init__(models.EventSession, session, **kwargs)

admin.add_view(EventView(database.db_session))

admin.add_view(EventSessionView(database.db_session))