app.py

import streamlit as st
import os
import importlib
import inspect
import numpy as np
import torch
from PIL import Image
# from aoc.year_2021.code.day_1 import streamlit_1, streamlit_torch_1
# from aoc.year_2021.code.day_2 import streamlit_2
# from aoc.year_2021.code.day_3 import streamlit_torch_3
# from aoc.year_2021.code.day_4 import streamlit_4
# from aoc.year_2021.code.day_5 import streamlit_5


st.sidebar.markdown("**AoC 2021 app** by Yassine Alouini")
logo = Image.open('logo.png')
st.sidebar.image(logo, width=64)

day = st.sidebar.selectbox("Select the day: ", [5])
day_input = st.sidebar.text_area("Paste your input here: ", "")
show_code = st.sidebar.radio("Show code? ", [True, False])
show_torch_code = st.sidebar.radio("Show PyTorch code? ", [True, False])


def streamlit_5(data_input):
    """ Day 5 solution (mainly using numpy)
    """
    import numpy as np
    import re
    import streamlit as st

    tmp = data_input.rstrip().split("\n")

    # Using complex numbers as (x, y) representation
    starts, ends = [], []
    for row in tmp:
        x1, y1, x2, y2 = re.findall(r'\d+', row)
        starts.append(int(x1) + 1j * int(y1))
        ends.append(int(x2) + 1j * int(y2))

    # Dimension of the grid
    d = max(map(abs, starts)) + 1

    def solve(part_2=False):
        a = np.zeros((int(d), int(d)))
        for start_point, end_point in zip(starts, ends):
            start_x = min(int(start_point.real), int(end_point.real))
            end_x = max(int(start_point.real), int(end_point.real))
            start_y = min(int(start_point.imag), int(end_point.imag))
            end_y = max(int(start_point.imag), int(end_point.imag))
            # Compute cosine and sine to find if diagonal or anti-diagonal
            diff = start_point - end_point
            c = (diff.real) / abs(diff)
            s = (diff.imag) / abs(diff)
            sliced_a = a[start_x: end_x + 1, start_y: end_y + 1]
            criterion = round(s * c, 1)
            if part_2:
                if criterion == 0.5:
                    np.fill_diagonal(sliced_a, sliced_a.diagonal() + 1)
                elif criterion == -0.5:
                    # Need to flip the sliced matrix to get the correct diagonal
                    np.fill_diagonal(np.fliplr(sliced_a), 
                                     np.fliplr(sliced_a).diagonal() + 1)
            # Either horizontal or vertical
            if criterion == 0:
                sliced_a += 1
        return a
    
    st.write("Solution to part I: ", (solve()>= 2).sum())
    st.write("Solution to part II: ", (solve(part_2=True)>= 2).sum())



# if day == 1 and (day_input is not None and day_input != ""):
#     if show_code:
#         st.code(inspect.getsource(streamlit_1))
#         streamlit_1(day_input)
#     if show_torch_code:
#         st.code(inspect.getsource(streamlit_torch_1))
#         streamlit_torch_1(day_input)

# if day == 2 and (day_input is not None and day_input != ""):
#     if show_code:
#         st.code(inspect.getsource(streamlit_2))
#         streamlit_2(day_input)
#     # if show_torch_code:
#     #     st.code(inspect.getsource(day_1_torch))
#     #     day_1_torch(day_input)

# if day == 3 and (day_input is not None and day_input != ""):
#     # if show_code:
#     #     st.code(inspect.getsource(streamlit_3))
#     #     streamlit_2(day_input)
#     if show_torch_code:
#         st.code(inspect.getsource(streamlit_torch_3))
#         streamlit_torch_3(day_input)

# if day == 4 and (day_input is not None and day_input != ""):
#     if show_code:
#         st.code(inspect.getsource(streamlit_4))
#         streamlit_4(day_input)
#     # if show_torch_code:
#     #     st.code(inspect.getsource(streamlit_torch_3))
#     #     streamlit_torch_3(day_input)

if day == 5 and (day_input is not None and day_input != ""):
    if show_code:
        st.code(inspect.getsource(streamlit_5))
        streamlit_5(day_input)
    # if show_torch_code:
    #     st.code(inspect.getsource(streamlit_torch_3))
    #     streamlit_torch_3(day_input)