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203
routers/favoritos.py
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203
routers/favoritos.py
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"""
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Favorites router - Save and manage favorite news.
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"""
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from flask import Blueprint, request, jsonify, session, render_template
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from psycopg2 import extras
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from db import get_read_conn, get_write_conn
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from utils.auth import get_current_user, is_authenticated
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import secrets
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favoritos_bp = Blueprint("favoritos", __name__, url_prefix="/favoritos")
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def get_user_or_session_id():
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"""Get user ID if authenticated, otherwise session ID.
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Returns:
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Tuple of (user_id, session_id)
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"""
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user = get_current_user()
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if user:
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return (user['id'], None)
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# Anonymous user - use session_id
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if "user_session" not in session:
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session["user_session"] = secrets.token_hex(16)
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return (None, session["user_session"])
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def ensure_favoritos_table(conn):
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"""Create/update favoritos table to support both users and sessions."""
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with conn.cursor() as cur:
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# Table is created by init-db scripts, just ensure it exists
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cur.execute("""
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CREATE TABLE IF NOT EXISTS favoritos (
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id SERIAL PRIMARY KEY,
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user_id INTEGER REFERENCES usuarios(id) ON DELETE CASCADE,
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session_id VARCHAR(64),
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noticia_id VARCHAR(32) REFERENCES noticias(id) ON DELETE CASCADE,
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created_at TIMESTAMP DEFAULT NOW()
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);
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""")
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cur.execute("CREATE INDEX IF NOT EXISTS idx_favoritos_session ON favoritos(session_id);")
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cur.execute("CREATE INDEX IF NOT EXISTS idx_favoritos_user_id ON favoritos(user_id);")
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# Ensure session_id can be null (for logged in users)
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try:
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cur.execute("ALTER TABLE favoritos ALTER COLUMN session_id DROP NOT NULL;")
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except Exception:
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conn.rollback()
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else:
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conn.commit()
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conn.commit()
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# ============================================================
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# API: Toggle Favorite
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# ============================================================
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@favoritos_bp.route("/toggle/<noticia_id>", methods=["POST"])
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def toggle_favorite(noticia_id):
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"""Toggle favorite status for a news item."""
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user_id, session_id = get_user_or_session_id()
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with get_write_conn() as conn:
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ensure_favoritos_table(conn)
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with conn.cursor() as cur:
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# Check if already favorited (by user_id OR session_id)
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if user_id:
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cur.execute(
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"SELECT id FROM favoritos WHERE user_id = %s AND noticia_id = %s",
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(user_id, noticia_id)
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)
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else:
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cur.execute(
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"SELECT id FROM favoritos WHERE session_id = %s AND noticia_id = %s",
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(session_id, noticia_id)
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)
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existing = cur.fetchone()
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if existing:
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# Remove favorite
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if user_id:
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cur.execute(
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"DELETE FROM favoritos WHERE user_id = %s AND noticia_id = %s",
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(user_id, noticia_id)
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)
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else:
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cur.execute(
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"DELETE FROM favoritos WHERE session_id = %s AND noticia_id = %s",
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(session_id, noticia_id)
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)
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is_favorite = False
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else:
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# Add favorite
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cur.execute(
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"INSERT INTO favoritos (user_id, session_id, noticia_id) VALUES (%s, %s, %s) ON CONFLICT DO NOTHING",
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(user_id, session_id, noticia_id)
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)
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is_favorite = True
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conn.commit()
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return jsonify({"success": True, "is_favorite": is_favorite})
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# ============================================================
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# API: Check if Favorite
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# ============================================================
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@favoritos_bp.route("/check/<noticia_id>")
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def check_favorite(noticia_id):
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"""Check if a news item is favorited."""
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user_id, session_id = get_user_or_session_id()
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with get_read_conn() as conn:
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with conn.cursor() as cur:
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if user_id:
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cur.execute(
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"SELECT id FROM favoritos WHERE user_id = %s AND noticia_id = %s",
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(user_id, noticia_id)
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)
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else:
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cur.execute(
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"SELECT id FROM favoritos WHERE session_id = %s AND noticia_id = %s",
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(session_id, noticia_id)
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)
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is_favorite = cur.fetchone() is not None
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return jsonify({"is_favorite": is_favorite})
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# ============================================================
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# API: Get User's Favorites IDs
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# ============================================================
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@favoritos_bp.route("/ids")
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def get_favorite_ids():
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"""Get list of favorite noticia IDs for current user."""
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user_id, session_id = get_user_or_session_id()
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with get_read_conn() as conn:
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with conn.cursor() as cur:
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if user_id:
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cur.execute(
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"SELECT noticia_id FROM favoritos WHERE user_id = %s",
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(user_id,)
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)
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else:
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cur.execute(
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"SELECT noticia_id FROM favoritos WHERE session_id = %s",
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(session_id,)
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)
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ids = [row[0] for row in cur.fetchall()]
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return jsonify({"ids": ids})
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# ============================================================
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# Page: View Favorites
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# ============================================================
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@favoritos_bp.route("/")
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def view_favorites():
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"""View all favorited news items."""
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user_id, session_id = get_user_or_session_id()
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user = get_current_user()
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with get_read_conn() as conn:
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with conn.cursor(cursor_factory=extras.DictCursor) as cur:
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if user_id:
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cur.execute("""
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SELECT n.id, n.titulo, n.resumen, n.url, n.fecha, n.imagen_url,
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n.fuente_nombre, c.nombre AS categoria, p.nombre AS pais,
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t.titulo_trad, t.resumen_trad, t.lang_to,
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f.created_at AS favorito_at
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FROM favoritos f
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JOIN noticias n ON n.id = f.noticia_id
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LEFT JOIN categorias c ON c.id = n.categoria_id
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LEFT JOIN paises p ON p.id = n.pais_id
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LEFT JOIN traducciones t ON t.noticia_id = n.id AND t.lang_to = 'es' AND t.status = 'done'
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WHERE f.user_id = %s
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ORDER BY f.created_at DESC
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LIMIT 100;
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""", (user_id,))
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else:
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cur.execute("""
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SELECT n.id, n.titulo, n.resumen, n.url, n.fecha, n.imagen_url,
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n.fuente_nombre, c.nombre AS categoria, p.nombre AS pais,
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t.titulo_trad, t.resumen_trad, t.lang_to,
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f.created_at AS favorito_at
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FROM favoritos f
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JOIN noticias n ON n.id = f.noticia_id
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LEFT JOIN categorias c ON c.id = n.categoria_id
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LEFT JOIN paises p ON p.id = n.pais_id
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LEFT JOIN traducciones t ON t.noticia_id = n.id AND t.lang_to = 'es' AND t.status = 'done'
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WHERE f.session_id = %s
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ORDER BY f.created_at DESC
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LIMIT 100;
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""", (session_id,))
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noticias = cur.fetchall()
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return render_template("favoritos.html", noticias=noticias, user=user)
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