from flask import Flask, render_template, request, redirect, url_for
import toml
import os

app = Flask(__name__)

mydir = os.path.dirname(os.path.abspath(__file__))
# print(mydir)
mydir = os.path.join(mydir, '../')
# print(mydir)

essentials = {'type': None, 'height': None,
              'width': None, 'posX': None, 'posY': None}
trello_options = {'board': None, 'list': None}
image_options = {'filename': None, 'scaleMode': None, 'bwStyle': None}


def convert(input):
    if isinstance(input, dict):
        return dict((convert(key), convert(value)) for key, value in input.iteritems())
    elif isinstance(input, list):
        return [convert(element) for element in input]
    elif isinstance(input, unicode):
        return input.encode('utf-8')
    else:
        return input

# HOMEPAGE
@app.route('/home', methods=['GET', 'POST'])
def home(): # Toml config passed to html page via two dicts. 
            # Form data passed back to webserver as JSON.
    config = read_config()
    widgLists, sysList = prep_dict_for_web(config)
    
    if request.method == 'POST':
        jsonData = request.get_json()
        print(jsonData)
        jsonData = convert(jsonData)

        # update system variables
        for key in sysList:
            print("%" + jsonData[key] + "$")
            if jsonData[key]:
                if isInt(jsonData[key]):
                    #print(request.form[key] + " is int")
                    sysList[key] = int(jsonData[key])
                else:
                    sysList[key] = jsonData[key]
        # update widget variables
        # for i in range(len(widgLists)):
        #   for key in widgLists[i]:
        #       if request.form[key+str(i)]:
        #           widgLists[i][key] = request.form[key+str(i)]
        for i in range(len(widgLists)):
            for key in widgLists[i]:
                # print(request.form[key+str(i)])
                if jsonData[key + str(i)]:
                    if isInt(jsonData[key + str(i)]):
                        #print(request.form[key+str(i)] + " is int")
                        widgLists[i][key] = int(jsonData[key + str(i)])
                    else:
                        widgLists[i][key] = jsonData[key + str(i)]

        update_config(widgLists, sysList)

    return render_template('home.html', title='Overview', widgLists=widgLists, sysList=sysList)


def isInt(s):
    try:
        int(s)
        return True
    except ValueError:
        return False


def prep_dict_for_web(config):
    widgLists = config['widgets']  # list of dicts
    sysList = {}  # dict
    for key in config:
        if key != 'widgets':
            sysList[key] = config[key]
    return widgLists, sysList


def read_config():
    uni_config = toml.load(os.path.join(mydir, 'config.toml'))
    config = convert(uni_config)
    # print(config)
    # config = {'widgets': [
    #{'width': 3, 'posX': 0, 'posY': 0, 'scaleMode': 'fill', 'bwStyle': 'mono', 'type': 'image', 'filename': 'forest.jpg', 'height': 3},
    #{'list': 'Plans', 'height': 3, 'width': 1, 'board': 'Organisation', 'posX': 0, 'posY': 0, 'type': 'trello'},
    #{'list': 'To Do:', 'height': 3, 'width': 2, 'board': 'E-paper', 'posX': 1, 'posY': 0, 'type': 'trello'}
    # ], 'cellsHeight': 3, 'resHeight': 384, 'resWidth': 640, 'cellsWidth': 3}
    return config


def update_config(widgLists, sysList):
    config = {'widgets': widgLists}
    for key in sysList:
        config[key] = sysList[key]
    convert(config)
    path = os.path.join(mydir, 'config.toml')
    with open(path, "w+") as config_file:
        config_file.write(toml.dumps(config))


if __name__ == '__main__':
    app.run(debug=True, host='0.0.0.0')