import falcon
import json
import os
from libindic.payyans import Payyans
instance = Payyans()

all_fonts = [
        'ambili',
        'charaka',
        'haritha',
        'indulekha',
        'karthika',
        'manorama',
        'matweb',
        'nandini',
        'panchari',
        'revathi',
        'template',
        'uma',
        ]

def convert(txt, font):
    # txt = txt.replace("ൺ", "ണ്‍") \
    # .replace("ൻ", "ന്‍") \
    # .replace("ർ", "ര്‍") \
    # .replace("ൽ", "ല്‍") \
    # .replace("ൾ", "ള്‍") \
    # .replace("ോ", "ോ") \
    # .replace("ൊ", "ൊ")

    return instance.Unicode2ASCII(txt, font)

class QResource:
    def on_post(self, req, resp):
        body = req.get_media()
        text = body.get( 'text' )
        font_name = body.get( 'font' )
        if( font_name not in all_fonts ):
            raise falcon.HTTPBadRequest('Invalid font')
        resp.set_header('content-type', 'application/json; charset=UTF-8')
        data = { }
        data['ascii'] = convert(text, font_name )
        resp.body = json.dumps( data, default=str )


class RedirectingResource:
    def on_get(self, req, resp):
        raise falcon.HTTPMovedPermanently('/index.html')

api = falcon.API()
api.add_route('/', RedirectingResource())
api.add_static_route('/', os.path.dirname(os.path.realpath(__file__)) + '/static' )
api.add_route('/api/a2u', QResource())