Add: basic structure

ejercicios/beautifulsoup/ej4/src/__ssl.py

@@ -0,0 +1,5 @@
+def init_ssl():
+    import os, ssl
+    if (not os.environ.get('PYTHONHTTPSVERIFY', '') and
+    getattr(ssl, '_create_unverified_context', None)):
+        ssl._create_default_https_context = ssl._create_unverified_context

ejercicios/beautifulsoup/ej4/src/config.py

@@ -0,0 +1,6 @@
+from pathlib import Path
+
+BASE_URL = "https://recetas.elperiodico.com"
+RECIPES_URL = BASE_URL + "/Recetas-de-Aperitivos-tapas-listado_receta-1_1.html"
+DATA_DIR = Path(__file__).parent.parent / "data"
+DB_PATH = DATA_DIR / "recipes.bd"

ejercicios/beautifulsoup/ej4/src/db.py

@@ -0,0 +1,141 @@
+import sqlite3
+from pathlib import Path
+
+
+class DBAttr:
+    def __init__(self, name, type_, modifier=""):
+        self.name = name
+        self.type_ = type_
+        self.modifier = modifier
+
+    def sql(self):
+        parts = [self.name, self.type_]
+        if self.modifier:
+            parts.append(self.modifier)
+        return " ".join(parts)
+
+
+class DBManager:
+    _instance = None
+    
+    def __new__(cls, *args, **kwargs):
+        if cls._instance is None:
+            cls._instance = super().__new__(cls)
+        return cls._instance
+    
+    def __init__(self, path):
+        self.path = Path(path)
+        self.conn = sqlite3.connect(self.path)
+        self.conn.row_factory = sqlite3.Row
+
+    def create_table(self, table_name, attributes: list[DBAttr]):
+        columns_sql = ",\n    ".join(attr.sql() for attr in attributes)
+
+        query = f"""
+        CREATE TABLE IF NOT EXISTS {table_name} (
+            {columns_sql}
+        );
+        """
+
+        try:
+            with self.conn:
+                self.conn.execute(query)
+        except Exception as e:
+            print("Error creating table:", e)
+
+    def get_all(self, table_name):
+        try:
+            cursor = self.conn.execute(f"SELECT * FROM {table_name};")
+            return [dict(row) for row in cursor.fetchall()]
+        except Exception as e:
+            print("Error selecting:", e)
+            return []
+        
+    def get_singleton(self, singleton_table):
+        try:
+            cursor = self.conn.execute(f"SELECT * FROM {singleton_table}")
+            return [row[0] for row in cursor.fetchall()]
+        except Exception as e:
+            print("Error selecting:", e)
+            return []
+
+    def get_by(self, table_name, column, value):
+        try:
+            query = f"SELECT * FROM {table_name} WHERE {column} = ?;"
+            cursor = self.conn.execute(query, (value,))
+            return [dict(row) for row in cursor.fetchall()]
+        except Exception as e:
+            print("Error selecting:", e)
+            return []
+
+    def insert(self, table_name, data: dict):
+        keys = ", ".join(data.keys())
+        placeholders = ", ".join("?" for _ in data)
+        values = tuple(data.values())
+
+        query = f"""
+        INSERT INTO {table_name} ({keys})
+        VALUES ({placeholders});
+        """
+
+        try:
+            with self.conn:
+                self.conn.execute(query, values)
+        except Exception as e:
+            print("Error inserting:", e)
+
+    def update(self, table_name, data: dict, where_column, where_value):
+        set_clause = ", ".join(f"{key} = ?" for key in data.keys())
+        values = list(data.values())
+        values.append(where_value)
+
+        query = f"""
+        UPDATE {table_name}
+        SET {set_clause}
+        WHERE {where_column} = ?;
+        """
+
+        try:
+            with self.conn:
+                self.conn.execute(query, tuple(values))
+        except Exception as e:
+            print("Error updating:", e)
+
+    def delete(self, table_name, where_column, where_value):
+        query = f"DELETE FROM {table_name} WHERE {where_column} = ?;"
+
+        try:
+            with self.conn:
+                self.conn.execute(query, (where_value,))
+        except Exception as e:
+            print("Error deleting:", e)
+            
+    def clear(self, table_name):
+        query = f"DELETE FROM {table_name};"
+        
+        try:
+            with self.conn:
+                self.conn.execute(query)
+        except Exception as e:
+            print("Error clearing table: ", e)
+
+    def exists(self, table_name, where_column, where_value):
+        query = f"SELECT 1 FROM {table_name} WHERE {where_column} = ? LIMIT 1;"
+
+        try:
+            cursor = self.conn.execute(query, (where_value,))
+            return cursor.fetchone() is not None
+        except Exception as e:
+            print("Error checking existence:", e)
+            return False
+
+    def count(self, table_name):
+        try:
+            cursor = self.conn.execute(f"SELECT COUNT(*) as total FROM {table_name};")
+            return cursor.fetchone()["total"]
+        except Exception as e:
+            print("Error counting:", e)
+            return 0
+
+    def close(self):
+        self.conn.close()

ejercicios/beautifulsoup/ej4/src/main.py

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+from bs4 import BeautifulSoup
+import re
+from tkinter import Tk
+from tkinter import messagebox
+import urllib.request
+from datetime import datetime
+import locale
+
+from db import DBManager, DBAttr
+#from ui import RecipesUI
+from __ssl import init_ssl
+from config import *
+
+init_ssl()
+locale.setlocale(locale.LC_TIME, "es_ES.UTF-8")
+
+dbm = DBManager(DB_PATH)
+
+def create_tables():
+    recipes_attr = [
+        DBAttr("title", "TEXT", "NOT NULL"),
+        DBAttr("difficulty", "TEXT", "DEFAULT NULL"),
+        DBAttr("units", "INTEGER", "DEFAULT NULL"),
+        DBAttr("duration", "INTEGER", "DEFAULT NULL"),
+        DBAttr("author", "TEXT", "NOT NULL"),
+        DBAttr("updated_at", "DATE", "NOT NULL")
+    ]
+
+    dbm.create_table("recipes", recipes_attr)
+    
+def persist_recipes():
+    f = urllib.request.urlopen(RECIPES_URL)
+    bs = BeautifulSoup(f, "lxml")
+    results = bs.find_all("div", attrs={"data-js-selector": "resultado"})
+    for div in results:
+        print(div)
+        title_a = div.a
+        title = title_a.string.strip()
+        info_div = div.find("div", class_="info_snippet")
+        difficulty = info_div.find("span").get_text(strip=True) if info_div and info_div.find("span") else None
+        properties = div.find("div", class_="properties")
+        duration = properties.find("span", class_=["property", "duracion"]).string.strip() if properties and properties.find("span", class_=["property", "duracion"]) else None
+        units = properties.find("span", class_=["property", "unidades"]).string.strip() if properties and properties.find("span", class_=["property", "unidades"]) else None
+        details_link = title_a["href"]
+        f2 = urllib.request.urlopen(details_link)
+        bs2 = BeautifulSoup(f2, "lxml")
+        details = bs2.find("div", class_="autor").find("div", class_="nombre_autor")
+        author = details.find("a").string
+        date_str = details.find("span").string
+        updated_at = datetime.strptime(date_str, "%d %B %Y")
+        
+        dbm.insert("recipes", {
+            "title": title,
+            "difficulty": difficulty,
+            "units": units,
+            "duration": duration,
+            "author": author,
+            "updated_at": updated_at
+        })
+        
+        return dbm.count("recipes")
+        
+
+def main():        
+    create_tables()
+    recipes_count = persist_recipes()
+    print(recipes_count)
+    #root = Tk()
+    #ui = RecipesUI(root)
+    
+    # def handle_action(action):
+    
+    #ui.callback = handle_action
+    #root.mainloop()
+    #dbm.close()
+    
+    print(dbm.get_all("recipes"))
+            
+if __name__ == "__main__":
+    main()