import requests
from bs4 import BeautifulSoup

import glob
import json


def download_recipes():

    next_category_page = "https://en.wikibooks.org/wiki/Category:Recipes"

    page_number = 0
    while next_category_page is not None:
        r = requests.get(next_category_page)
        next_category_page = None
        soup = BeautifulSoup(r.text, features="html.parser")
        mw_pages = soup.select("#mw-pages")[0]
        
        recipe_number = 0
        for a in mw_pages.find_all("a"):
            if a["href"].endswith("#mw-pages") and a.text == "next page":
                print(a["href"])
                next_category_page = f"https://en.wikibooks.org{a['href']}"

            elif a["href"].startswith("/wiki/Cookbook:"):
                r2 = requests.get(f"https://en.wikibooks.org{a['href']}")
                if r2.status_code == 200:
                    print("\tdownloading:", a["href"])
                    with open(f"recipes/recipe_{page_number:02}_{recipe_number:03}.html", "w") as f:
                        f.write(r2.text)
                else:
                    print("WARNING: could not download:", a["href"])
                recipe_number += 1

        page_number += 1

def parse_recipes():
    recipes = []
    for recipe_file in sorted(glob.glob("recipes/*.html")):
        print("parsing: ", recipe_file)
        recipe_data = parse_recipe(recipe_file)
        recipes.append({"filename": recipe_file, "recipe_data": recipe_data})
    with open("recipes_parsed.json", "w") as f:
        json.dump(recipes, f, ensure_ascii=False, indent=4)
    with open("recipes_parsed.mini.json", "w") as f:
        json.dump(recipes, f, ensure_ascii=True)
    

def parse_recipe(filename):
    with open(filename) as f:
        soup = BeautifulSoup(f.read(), features="html.parser")

    recipe_title = soup.select("#firstHeading")[0].get_text().replace("Cookbook:", "")

    recipe_url = soup.find("link", attrs={"rel": "canonical"})["href"]

    infoboxes = soup.select("table.infobox")
    if len(infoboxes) >= 1:
        recipe_info = parse_infobox(infoboxes[0])
    else:
        print(f"[{filename}] WARNING: no infobox found")
        recipe_info = None

    content = soup.select("div.mw-content-ltr")[0]
    section_name = None
    text_lines = []
    for i, child in enumerate(content):
        if child.name == "p" and child.get_text().startswith("Cookbook | Recipes | Ingredients |"): 
            continue  # skip the first p (navigation bar)
        
        elif child.name == "div" and " ".join(child.get("class", [])) == "mw-heading mw-heading2":
            section_name = child.find("h2").text
        
        elif child.name in ["p", "blockquote"]:
            text_lines.append({
                "text": child.get_text().strip(),
                "line_type": child.name,
                "section": section_name
            })

        elif child.name in ["ul", "ol"]:
            for li in child.find_all("li"):
                text_lines.append({
                "text": li.get_text().strip(),
                "line_type": child.name,
                "section": section_name
                })
    return {
        "url": recipe_url,
        "title": recipe_title,
        "infobox": recipe_info,
        "text_lines": text_lines
    }

def parse_infobox(infobox):
    
    recipe_info = {
        "category": None,
        "servings": None,
        "time": None,
        "difficulty": None
    }

    for tr in infobox.select("tr"):
        if not tr.select("th"):
            continue
        if tr.find("th").text == "Category":
            category_link = tr.find("td").find("a")
            if category_link:
                recipe_info["category"] = category_link["href"]
        elif tr.find("th").text == "Servings":
            recipe_info["servings"] = tr.find("td").text
        elif tr.find("th").text == "Time":
            recipe_info["time"] = tr.find("td").text
        elif tr.find("th").text == "Difficulty":
            difficulty_link = tr.select("a.mw-file-description")
            if difficulty_link:
                recipe_info["difficulty"] = parse_difficulty(difficulty_link[0]["href"])
    return recipe_info

def parse_difficulty(svg_filename):
    if svg_filename == "/wiki/File:1o5dots.svg":
        return 1
    elif svg_filename == "/wiki/File:2o5dots.svg":
        return 2
    elif svg_filename == "/wiki/File:3o5dots.svg":
        return 3
    elif svg_filename == "/wiki/File:4o5dots.svg":
        return 4
    elif svg_filename == "/wiki/File:5o5dots.svg":
        return 5
    else:
        raise ValueError("Invalid difficulty level filename")


if __name__ == "__main__":
    # download_recipes()
    parse_recipes()