from flask import Flask, render_template, request
import numpy as np
import concurrent.futures

app = Flask(__name__)


def multiply_matrices(matrix_a, matrix_b):
    if len(matrix_a[0]) != len(matrix_b):
        raise ValueError("Incompatible matrix dimensions for multiplication")

    result = [[0 for _ in range(len(matrix_b[0]))] for _ in range(len(matrix_a))]

    for i in range(len(matrix_a)):
        for j in range(len(matrix_b[0])):
            for k in range(len(matrix_b)):
                result[i][j] += matrix_a[i][k] * matrix_b[k][j]

    return result

def multiply_matrices_parallel(matrix_a, matrix_b, num_threads):
    if len(matrix_a[0]) != len(matrix_b):
        raise ValueError("Incompatible matrix dimensions for multiplication")

    result = [[0 for _ in range(len(matrix_b[0]))] for _ in range(len(matrix_a))]

    with concurrent.futures.ThreadPoolExecutor(max_workers=num_threads) as executor:
        futures = []
        for i in range(len(matrix_a)):
            futures.append(executor.submit(_multiply_row, matrix_a, matrix_b, i))

        for i, future in enumerate(concurrent.futures.as_completed(futures)):
            result[i] = future.result()

    return result

def _multiply_row(matrix_a, matrix_b, i):
    row_result = [0 for _ in range(len(matrix_b[0]))]
    for j in range(len(matrix_b[0])):
        for k in range(len(matrix_b)):
            row_result[j] += matrix_a[i][k] * matrix_b[k][j]
    return row_result



@app.route('/')
def index():
    return render_template('index.html')


@app.route('/multiply', methods=['POST'])
def multiply():
    n = int(request.form.get('matrix_a'))
    matrix_a = np.random.randint(10, size=(n, n))
    matrix_b = np.random.randint(10, size=(n, n))

    operation_type = request.form.get('operation_type')

    if operation_type == 'sequential':
        result = multiply_matrices(matrix_a, matrix_b)
    elif operation_type == 'parallel':
        result = multiply_matrices_parallel(matrix_a, matrix_b)
    else:
        return "Invalid operation type"

    return render_template('result.html', matrix_a=matrix_a, matrix_b=matrix_b, result=result)


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