import matplotlib.pyplot as plt
import numpy as np
import scipy.stats as ss
from read_chirp_data import *
from utility import *
from IPython import embed

# define sampling rate and data path
sampling_rate = 40 #kHz
data_dir = "../data"
dataset = "2018-11-14-al-invivo-1"
inch_factor = 2.54
# parameters for binning, smoothing and plotting
cut_window = 60
chirp_size = 14 #ms
neuronal_delay = 5 #ms
chirp_start = int((-chirp_size/2+neuronal_delay+cut_window)*sampling_rate)
chirp_end = int((chirp_size/2+neuronal_delay+cut_window+1)*sampling_rate)
num_bin = 12
window = 1 #ms
time_axis = np.arange(-cut_window, cut_window, 1/sampling_rate) #steps
spike_bins = np.arange(-cut_window, cut_window+1) #ms

# read data from files
spikes = read_chirp_spikes(os.path.join(data_dir, dataset))
#eod = read_chirp_eod(os.path.join(data_dir, dataset))
#chirp_times = read_chirp_times(os.path.join(data_dir, dataset))

# make a delta f map for the quite more complicated keys
df_map = map_keys(spikes)

# differentiate between phases
phase_vec = np.arange(0, 1+1/num_bin, 1/num_bin)
cut_range = np.arange(-cut_window*sampling_rate, cut_window*sampling_rate, 1)

# make dictionaries for spiketimes
df_phase_time = {}
df_phase_binary = {}

# iterate over delta f, repetition, phases and a single chirp
for deltaf in df_map.keys():
    df_phase_time[deltaf] = {}
    df_phase_binary[deltaf] = {}
    for rep in df_map[deltaf]:
        chirp_size = int(rep[-1].strip('Hz'))
        # print(chirp_size)
        if chirp_size == 150:
            continue
        for phase in spikes[rep]:
            for idx in np.arange(num_bin):
                # check the phase
                if phase[1] > phase_vec[idx] and phase[1] < phase_vec[idx+1]:

                    # get spikes between 60 ms before and after the chirp
                    spikes_to_cut = np.asarray(spikes[rep][phase])
                    spikes_cut = spikes_to_cut[(spikes_to_cut > -cut_window) & (spikes_to_cut < cut_window)]
                    spikes_raster = spikes_to_cut[(spikes_to_cut > -cut_window+5) & (spikes_to_cut < cut_window-5)]
                    spikes_idx = np.round(spikes_cut*sampling_rate)
                    # also save as binary, 0 no spike, 1 spike
                    binary_spikes = np.isin(cut_range, spikes_idx)*1

                    # add the spikes to the dictionaries with the correct df and phase
                    if idx in df_phase_time[deltaf].keys():
                        df_phase_time[deltaf][idx].append(spikes_raster)
                        df_phase_binary[deltaf][idx] = np.vstack((df_phase_binary[deltaf][idx], binary_spikes))
                    else:
                        df_phase_time[deltaf][idx] = [spikes_raster]
                        df_phase_binary[deltaf][idx] = binary_spikes


# for plotting and calculating iterate over delta f and phases
for df in df_phase_time.keys():
    for index_phase, phase in enumerate(df_phase_time[df].keys()):

        # plot
        plot_trials = df_phase_time[df][phase]
        plot_trials_binary = np.mean(df_phase_binary[df][phase], axis=0)

        # calculation
        #overall_spikerate = (np.sum(plot_trials_binary)/len(plot_trials_binary))*sampling_rate*1000

        smoothed_spikes = smooth(plot_trials_binary, window, 1./sampling_rate)

        fig, ax = plt.subplots(2, 1, sharex=True, figsize=(18/inch_factor, 13/inch_factor))
        for i, trial in enumerate(plot_trials):
            ax[0].scatter(trial, np.ones(len(trial))+i, marker='|', color='k')

        ax[1].plot(time_axis[0+5*sampling_rate:-5*sampling_rate], smoothed_spikes[0+5*sampling_rate:-5*sampling_rate]*1000, color='royalblue', lw = 2)

        ax[0].set_title('df = %s Hz' %(df), fontsize = 18)
        ax[0].set_ylabel('repetition', fontsize=22)
        ax[0].yaxis.set_label_coords(-0.1, 0.5)
        ax[0].set_yticks(np.arange(1, len(plot_trials)+1,2))
        ax[0].set_yticklabels(np.arange(1, len(plot_trials)+1,2), fontsize=18)

        ax[1].set_xlabel('time [ms]', fontsize=22)
        ax[1].yaxis.set_label_coords(-0.1, 0.5)
        ax[1].set_ylabel('firing rate [Hz]', fontsize=22)
        plt.xticks(fontsize=18)
        plt.yticks(fontsize=18)
        fig.tight_layout()
        #plt.show()
        #exit()
        namefigure = '../figures/%s_%i_%i_firingrate.png' %(dataset, df, index_phase)
        plt.savefig(namefigure)