from scipy.io import wavfile
import sys
samplerate, data = wavfile.read('./output.wav')

if len(sys.argv) < 2:
    print("Usage:", "python3", sys.argv[0], "<file.wav>")
    exit(1)

i = 0
countsilent = 0
samplefound = 0

avg = []
start = 0
end = 0
avg.append([0])

for sample in data:
    i+=1	
    if(sample[1]<100):
        countsilent += 1
    if(countsilent > 10000 and sample[1]>100):
        countsilent = 0
        #print(str(i)+": sample found")
        start = i
        samplefound = 1
    if(countsilent > 8000 and samplefound==1):
        samplefound = 0
        #print(str(i)+": sample ended")
        end = i
        avg[len(avg)-1]=avg[len(avg)-1]/(end-start)
        avg.append([0])
    if (samplefound == 1):
        avg[len(avg)-1] += sample[1]
        
alphabet = "abcdefghijklmnopqr stuvwxyz"
avgs = {}

i=0

res=""

for arr in avg:
    value = round(arr[0], 2)
    #print(value)
    if str(value) not in avgs:
        avgs[str(value)]=alphabet[i]
        #print(str(value), "is", alphabet[i])
        i+=1
    res+=avgs[str(value)]
    

print(res)
print("\n")
print("plug the substitution cipher into https://www.guballa.de/substitution-solver and hope it worked!")