app.py

import  streamlit as st
import os
from crewai import Agent, Task, Crew, Process, LLM
from crewai_tools import SerperDevTool

gemini_key=os.getenv("GOOGLE_API_KEY")

serper_key=os.getenv("SERPER_API_KEY")

# Initialize a search tool (to fetch real-time travel info)
search_tool = SerperDevTool()
st.title("Trip Planner")
# Define the AI Model
llm = LLM(model="gemini/gemini-1.5-flash",
          verbose=True,
          temperature=0.5,
          api_key=gemini_key)#os.environ["GOOGLE_API_KEY"]

# 🧭 Travel Researcher Agent (Finds historical sites + weather)
researcher = Agent(
    role="Travel Researcher",
    goal="Find {places_type} of places , public transport hotels, and real-time weather for {destination} from {starting} based on {type}.",
    verbose=True,
    memory=True,
    backstory="You are an expert travel researcher, providing up-to-date information about history-focused trips.",
    llm=llm,
    tools=[search_tool],  # Uses live search tool
    allow_delegation=True
)

# 💰 Budget Planner Agent (Ensures trip stays under $1500)
budget_planner = Agent(
    role="Budget Planner",
    goal="Find budget flights, hotels, and activities within {budget} for {destination} from {starting},with in the dates from date {staring_date} to {ending_date}.",
    verbose=True,
    memory=True,
    backstory="You are a skilled budget analyst ensuring trips fit within financial constraints.",
    llm=llm,
    tools=[search_tool],
    allow_delegation=False
)

# 🗺️ Itinerary Planner Agent (Creates a balanced 3-day plan)
itinerary_planner = Agent(
    role="Itinerary Planner",
    goal="Create a  itinerary for {destination} from {starting}, ensuring all historical sites are covered under {budget} based on {type}.",
    verbose=True,
    memory=True,
    backstory="You are an expert in trip planning, ensuring travelers get the best experience within their budget.",
    llm=llm,
    tools=[search_tool],
    allow_delegation=False
)

# 📝 Travel Research Task
research_task = Task(
    description="Find the best historical sites, weather forecast, and public transport hotels for {destination}.",
    expected_output="A list of top historical sites, a real-time weather update, and 3 hotel options near public transport.",
    tools=[search_tool],
    agent=researcher
)

# 💲 Budget Estimation Task
budget_task = Task(
    description="Find budget flights, hotel options, and daily food/transport costs for {destination} based on from date {staring_date} to {ending_date}. Ensure total cost stays under {budget}.",
    expected_output="A full cost breakdown (flights, hotel, food, attractions) ensuring a {budget} budget is maintained.",
    tools=[search_tool],
    agent=budget_planner
)

# 📅 Itinerary Planning Task
itinerary_task = Task(
    description="Plan a from date {staring_date} to {ending_date} itinerary for {destination}, focusing on historical sites, budget constraints, and real-time weather conditions.",
    expected_output="A detailed 3-day plan, considering weather and budget constraints, with transport recommendations.",
    tools=[search_tool],
    agent=itinerary_planner
)

# 🚀 Crew Setup: All agents working together!
crew = Crew(
    agents=[researcher, budget_planner, itinerary_planner],
    tasks=[research_task, budget_task, itinerary_task],
    process=Process.sequential  # Runs tasks in sequence
)

col1,col2=st.columns(2)
with col1:
    start=st.text_input("Enter the starting Place")
with col2:
    destination=st.text_input("Enter the destinataion Place")
col1,col2 =st.columns(2)
with col1:
    staring_date = st.date_input("pick start date of trip")  
with col2:
    ending_date =st.date_input("pick ending date of trip")
col1,col2=st.columns(2)
with col1:
    type_option=[ "Business / Luxury "," Economics/Budget Friendly","cheaper "]
    type=st.selectbox("select the type of Experience ",options=type_option)
with col2:
    budget=st.number_input("Enter the Budget in Rupees",step=100)

places= st.text_input("Enter the places Your are intersted to vist (Please separe the places with colums ',')")
places_type=places.split(",")



if st.button("submit "):
    result = crew.kickoff(inputs={"starting":start,'destination':destination ,"type":type,"places_type":places_type,
                                  'budget': budget,"staring_date":str(staring_date) ,"ending_date":str(ending_date)})
    
    st.write(result.raw)