# Prepare Python environment

import scipy.io as sio
from pathlib import Path

data_dir = Path("../../../data/04-B1-02-AFI")
data_file = "fig4.mat"

#Load either archived or generated plot variables
mat_contents = sio.loadmat(data_dir / data_file)

params = mat_contents["params"]
T1_range = mat_contents["T1_range"][0]
r_analytical = mat_contents["r_analytical"]
r_approximation = mat_contents["r_approximation"]

## Plot
# PYTHON CODE
# Module imports

import matplotlib.pyplot as plt
import chart_studio.plotly as py
import plotly.graph_objs as go
import numpy as np
from plotly import __version__
from plotly.offline import download_plotlyjs, init_notebook_mode, plot, iplot
config={'showLink': False, 'displayModeBar': False}
# PYTHON CODE
# PYTHON CODE

init_notebook_mode(connected=True)

data1 = [dict(
        visible = False,
        mode = 'lines',
        x = params["EXC_FA"][0][0][0],
        y = abs(np.squeeze(np.asarray(r_analytical[ii]))),
        name = 'Analytical',
        text = 'Analytical',
        hoverinfo = 'x+y+text') for ii in range(len(T1_range))]

data1[10]['visible'] = True

data2 = [dict(
        visible = False,
        mode = 'lines',
        x = params["EXC_FA"][0][0][0],
        y = abs(np.squeeze(np.asarray(r_approximation[ii]))),
        name = 'Approximation',
        text = 'Approximation',
        hoverinfo = 'x+y+text') for ii in range(len(T1_range))]

data2[10]['visible'] = True

data = data1 + data2

steps = []
for i in range(len(T1_range)):
    step = dict(
        method = 'restyle',  
        args = ['visible', [False] * len(data1)],
        label = str(T1_range[i])
        )
    step['args'][1][i] = True # Toggle i'th trace to "visible"
    steps.append(step)

sliders = [dict(
    x = 0,
    y = -0.02,
    active = 10,
    currentvalue = {"prefix": "T1 value (ms): <b>"},
    pad = {"t": 50, "b": 10},
    steps = steps)]

layout = go.Layout(
    width=580,
    height=450,
    margin=go.layout.Margin(
        l=80,
        r=40,
        b=60,
        t=10,
    ),
    annotations=[
        dict(
            x=0.5004254919715793,
            y=-0.18,
            showarrow=False,
            text='Excitation Flip Angle (°)',
            font=dict(
                family='Times New Roman',
                size=22
            ),
            xref='paper',
            yref='paper'
        ),
        dict(
            x=-0.15,
            y=0.5,
            showarrow=False,
            text='r = S<sub>2</sub>/S<sub>1</sub>',
            font=dict(
                family='Times New Roman',
                size=22
            ),
            textangle=-90,
            xref='paper',
            yref='paper'
        ),
    ],
    xaxis=dict(
        autorange=False,
        range=[0, params['EXC_FA'][0][0][0][-1]],
        showgrid=False,
        linecolor='black',
        linewidth=2
    ),
    yaxis=dict(
        autorange=True,
        showgrid=False,
        linecolor='black',
        linewidth=2
    ),
    legend=dict(
        x=0.5,
        y=0.9,
        traceorder='normal',
        font=dict(
            family='Times New Roman',
            size=12,
            color='#000'
        ),
        bordercolor='#000000',
        borderwidth=2
    ), 
    sliders=sliders
)

fig = dict(data=data, layout=layout)

iplot(fig, filename = 'basic-line', config = config)