from pathlib import Path
from datetime import datetime
from collections import Counter
from functools import reduce
import re
import string

import sys

do_yesterday = len(sys.argv) > 1

from common import parse_foods_file

foods, recipes = parse_foods_file()

entry_re = re.compile(r'^(\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}) ', re.MULTILINE)
diet_re = re.compile(r'@diet (\d+g) ([a-zA-Z]+)')

day_index = -2 if do_yesterday else -1

current_day = list(sorted((Path.home() / 'workspace' /
    'journal').glob('*.md')))[day_index]

header, *tmp = entry_re.split(current_day.read_text())
entries = list(zip(tmp[::2], tmp[1::2]))

daily_grams = 0.0
daily_calories = 0.0
daily_protein = 0.0

for (timestamp, content) in sorted(entries, key=lambda x: x[0]):
    content = '\n'.join(
        part.replace('\n', ' ')
        for part in content.split('\n\n')
    )

    has_printed = False
    entry_calories = 0.0
    entry_protein = 0.0
    for diet in diet_re.finditer(content):
        if not has_printed:
            print(f'-- {timestamp}')
            has_printed = True
            
        value, name = diet.groups()
        value = float(value.removesuffix('g'))

        if name in recipes:
            food = recipes[name]

            if value == 0.0:
                value = food['TOTAL']

            food = {k: v*(value/food['TOTAL']) for k,v in food.items()}
        elif name in foods:
            if value == 0.0:
                value = 100

            food = {k: v*(value/100.0) for k,v in foods[name].items()}
        else:
            breakpoint()
            print(f'ERROR: Invalid diet entry: {content}')
            continue

        protein = round(food.get('Protein', 0.0), 2)
        calories = round(food.get('Energy', 0.0), 2)

        entry_calories += calories
        entry_protein += protein

        print(f'{name:<20} {value:<6}g, {calories:<6}kcal, {protein:<6}g protein')

    if has_printed:
        entry_calories = round(entry_calories, 2)
        entry_protein = round(entry_protein, 2)
        print(f'-- TOTAL: {entry_calories}kcal, {entry_protein}g protein')
        print()

    daily_calories += entry_calories
    daily_protein += entry_protein

print(f'-- DAILY TOTAL ({daily_calories}kcal, {daily_protein}g protein)')