Code Editor for app.py

import streamlit as st
import pandas as pd
import numpy as np

st.title('Sistem Rekrutmen')

# Initialize session state
if 'candidates' not in st.session_state:
    st.session_state.candidates = pd.DataFrame({
        'Nama': [],
        'Email': [],
        'Posisi': [],
        'Pengalaman': [],
        'Status': []
    })

# Side bar for adding new candidates
with st.sidebar:
    st.header('Tambah Kandidat Baru')
    nama = st.text_input('Nama')
    email = st.text_input('Email')
    posisi = st.selectbox('Posisi', ['Software Engineer', 'Data Scientist', 'Product Manager', 'UI/UX Designer'])
    pengalaman = st.number_input('Pengalaman (tahun)', min_value=0, max_value=50)
    
    if st.button('Tambah Kandidat'):
        new_candidate = pd.DataFrame({
            'Nama': [nama],
            'Email': [email],
            'Posisi': [posisi],
            'Pengalaman': [pengalaman],
            'Status': ['Dalam Review']
        })
        st.session_state.candidates = pd.concat([st.session_state.candidates, new_candidate], ignore_index=True)
        st.success('Kandidat berhasil ditambahkan!')

# Main content
st.header('Daftar Kandidat')

# Filter by position
filter_position = st.multiselect('Filter berdasarkan posisi:', 
                               options=['Semua'] + list(st.session_state.candidates['Posisi'].unique()),
                               default='Semua')

filtered_df = st.session_state.candidates
if filter_position and 'Semua' not in filter_position:
    filtered_df = filtered_df[filtered_df['Posisi'].isin(filter_position)]

# Display candidates
if not filtered_df.empty:
    for idx, row in filtered_df.iterrows():
        with st.expander(f"{row['Nama']} - {row['Posisi']}"):
            col1, col2, col3 = st.columns(3)
            with col1:
                st.write(f"Email: {row['Email']}")
            with col2:
                st.write(f"Pengalaman: {row['Pengalaman']} tahun")
            with col3:
                status = st.selectbox('Status',
                                    ['Dalam Review', 'Interview', 'Diterima', 'Ditolak'],
                                    index=['Dalam Review', 'Interview', 'Diterima', 'Ditolak'].index(row['Status']),
                                    key=f'status_{idx}')
                if status != row['Status']:
                    st.session_state.candidates.at[idx, 'Status'] = status
                    st.rerun()
else:
    st.info('Belum ada kandidat yang terdaftar.')