app.py

import gradio as gr
import requests


#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
# Step 1 - Semantic Search
from sentence_transformers import SentenceTransformer
import torch



# Step 2 - Semantic Search
    # Open the water_cycle.txt file in read mode with UTF-8 encoding
with open("water_cycle.txt", "r", encoding="utf-8") as file:
      # Read the entire contents of the file and store it in a variable
  water_cycle_text = file.read()
    # Print the text below
print(water_cycle_text)



# Step 3 - Semantic Search
def preprocess_text(text):
  # Strip extra whitespace from the beginning and the end of the text
  cleaned_text = text.strip()

  # Split the cleaned_text by every newline character (\n)
  chunks = cleaned_text.split("\n")

  # Create an empty list to store cleaned chunks
  cleaned_chunks = []

  # Write your for-in loop below to clean each chunk and add it to the cleaned_chunks list
  for chunk in chunks:
    stripped_chunk = chunk.strip()
    if len(stripped_chunk) > 0:
      cleaned_chunks.append(stripped_chunk)

  # Print cleaned_chunks
  print(cleaned_chunks)

  # Print the length of cleaned_chunks
  print(len(cleaned_chunks))

  # Return the cleaned_chunks
  return cleaned_chunks



# Step 4 - Semantic Search
    # Load the pre-trained embedding model that converts text to vectors
model = SentenceTransformer('all-MiniLM-L6-v2')

def create_embeddings(text_chunks):
      # Convert each text chunk into a vector embedding and store as a tensor
  chunk_embeddings = model.encode(text_chunks, convert_to_tensor=True) # Replace ... with the text_chunks list

      # Print the chunk embeddings
  print(chunk_embeddings)

      # Print the shape of chunk_embeddings
  print(chunk_embeddings.shape)

      # Return the chunk_embeddings
  return chunk_embeddings

    # Call the create_embeddings function and store the result in a new chunk_embeddings variable
chunk_embeddings = create_embeddings(cleaned_chunks) # Complete this line

    # Call the preprocess_text function and store the result in a cleaned_chunks variable
#cleaned_chunks = preprocess_text(water_cycle_text) # Complete this line



# Step 5 - Semantic Search
def get_top_chunks(query, chunk_embeddings, text_chunks):
  # Convert the query text into a vector embedding
  query_embedding = model.encode(query, convert_to_tensor = True) # Complete this line

  # Normalize the query embedding to unit length for accurate similarity comparison
  query_embedding_normalized = query_embedding / query_embedding.norm()

  # Normalize all chunk embeddings to unit length for consistent comparison
  chunk_embeddings_normalized = chunk_embeddings / chunk_embeddings.norm(dim=1, keepdim=True)

  # Calculate cosine similarity between query and all chunks using matrix multiplication
  similarities = torch.matmul(chunk_embeddings_normalized, query_embedding_normalized) # Complete this line

  # Print the similarities
  print(similarities)

  # Find the indices of the 3 chunks with highest similarity scores
  top_indices = torch.topk(similarities, k=3).indices

  # Print the top indices
  print(top_indices)

  # Create an empty list to store the most relevant chunks
  top_chunks = []

  # Loop through the top indices and retrieve the corresponding text chunks
  for i in top_indices:
    chunk = text_chunks[i]
    top_chunks.append(chunk)

  # Return the list of most relevant chunks
  return top_chunks



# Step 6 - Semantic Search
    # Call the get_top_chunks function with the original query
top_results = get_top_chunks("How does water get into the sky", chunk_embeddings, cleaned_chunks) # Complete this line
    # Print the top results
print(top_results)
#------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------


SPOONACULAR_API_KEY = "71259036cfb3405aa5d49c1220a988c5"
recipe_id_map = {}

# search for recipes
def search_recipes(ingredient, cuisine, dietary):
    global recipe_id_map
    url = "https://api.spoonacular.com/recipes/complexSearch"
    params = {
        "query": ingredient,
        "cuisine": cuisine,
        "diet": dietary,
        "number": 3,
        "apiKey": SPOONACULAR_API_KEY
    }

    res = requests.get(url, params=params)
    data = res.json()

    if "results" not in data or not data["results"]:
        recipe_id_map = {}
        return gr.update(choices=[], visible=True, label="No recipes found"), gr.update(value="No recipes found.")

    recipe_id_map = {r["title"]: r["id"] for r in data["results"]}
    return gr.update(choices=list(recipe_id_map.keys()), visible=True, label="Select a recipe"), gr.update(value="Select a recipe from the dropdown above.")

# get recipe details
def get_recipe_details(selected_title):
    if not selected_title or selected_title not in recipe_id_map:
        return "Please select a valid recipe."

    recipe_id = recipe_id_map[selected_title]
    url = f"https://api.spoonacular.com/recipes/{recipe_id}/information"
    params = {"apiKey": SPOONACULAR_API_KEY}
    res = requests.get(url, params=params)
    data = res.json()

    title = data.get("title", "Unknown Title")
    time = data.get("readyInMinutes", "N/A")
    instructions = data.get("instructions") or "No instructions available."
    return f"### 🍽️ {title}\n**⏱️ Cook Time:** {time} minutes\n\n**📋 Instructions:**\n{instructions}"


# UI
with gr.Blocks() as demo:
    gr.Markdown("## 🥗 The BiteBot")

    with gr.Row():
        ingredient = gr.Textbox(label="Preferred Ingredient", placeholder="e.g., chicken")
        cuisine = gr.Textbox(label="Preferred Cuisine", placeholder="e.g., Indian")
        diet = gr.Textbox(label="Dietary Restrictions", placeholder="e.g., vegetarian")

    search_button = gr.Button("Search Recipes")
    recipe_dropdown = gr.Dropdown(label="Select a recipe", visible=False)
    recipe_output = gr.Markdown()

    search_button.click(
        fn=search_recipes,
        inputs=[ingredient, cuisine, diet],
        outputs=[recipe_dropdown, recipe_output]
    )

    recipe_dropdown.change(
        fn=get_recipe_details,
        inputs=recipe_dropdown,
        outputs=recipe_output
    )

demo.launch()