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streamlit_app.py

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+import streamlit as st
+from datetime import datetime, date
+import utils
+import json
+
+# Set page config
+st.set_page_config(
+    page_title="Todo App",
+    page_icon="✅",
+    layout="wide",
+    initial_sidebar_state="expanded"
+)
+
+# Initialize session state
+if 'todos' not in st.session_state:
+    st.session_state.todos = []
+if 'filter' not in st.session_state:
+    st.session_state.filter = 'all'
+if 'editing_id' not in st.session_state:
+    st.session_state.editing_id = None
+
+def main():
+    # Header with link
+    col1, col2, col3 = st.columns([1, 2, 1])
+    with col2:
+        st.markdown("""
+        <div style='text-align: center; padding: 20px;'>
+            <h1>📝 Todo App</h1>
+            <p style='font-size: 14px; color: #666;'>Built with <a href='https://huggingface.co/spaces/akhaliq/anycoder' target='_blank'>anycoder</a></p>
+        </div>
+        """, unsafe_allow_html=True)
+
+    # Sidebar for filters and stats
+    with st.sidebar:
+        st.header("📊 Statistics")
+        stats = utils.get_todo_stats(st.session_state.todos)
+        st.metric("Total Tasks", stats['total'])
+        st.metric("Completed", stats['completed'])
+        st.metric("Pending", stats['pending'])
+        completion_rate = (stats['completed'] / stats['total'] * 100) if stats['total'] > 0 else 0
+        st.metric("Completion Rate", f"{completion_rate:.1f}%")
+
+        st.divider()
+
+        st.header("🔍 Filter Tasks")
+        filter_option = st.radio(
+            "Show:",
+            ['All Tasks', 'Active Tasks', 'Completed Tasks'],
+            index=['all', 'active', 'completed'].index(st.session_state.filter)
+        )
+        st.session_state.filter = ['all', 'active', 'completed'][['All Tasks', 'Active Tasks', 'Completed Tasks'].index(filter_option)]
+
+        st.divider()
+
+        st.header("🎯 Priority")
+        priority_filter = st.multiselect(
+            "Filter by priority:",
+            ['High', 'Medium', 'Low'],
+            default=['High', 'Medium', 'Low']
+        )
+
+        st.divider()
+
+        if st.button("🗑️ Clear Completed", type="secondary"):
+            st.session_state.todos = utils.clear_completed_todos(st.session_state.todos)
+            st.rerun()
+
+    # Main content area
+    col1, col2 = st.columns([2, 1])
+
+    with col1:
+        st.header("📋 Task List")
+
+        # Search bar
+        search_query = st.text_input("🔎 Search tasks...", placeholder="Type to search...")
+
+        # Filter and search todos
+        filtered_todos = utils.filter_todos(st.session_state.todos, st.session_state.filter, search_query, priority_filter)
+
+        if not filtered_todos:
+            st.info("No tasks found. Add a new task to get started!")
+        else:
+            for todo in filtered_todos:
+                with st.container():
+                    col_task, col_actions = st.columns([4, 1])
+
+                    with col_task:
+                        # Create a unique key for each todo
+                        key = f"todo_{todo['id']}"
+
+                        # Display todo based on whether it's being edited
+                        if st.session_state.editing_id == todo['id']:
+                            # Edit mode
+                            edited_text = st.text_input(
+                                "Edit task:",
+                                value=todo['text'],
+                                key=f"edit_{todo['id']}"
+                            )
+                            edited_priority = st.selectbox(
+                                "Priority:",
+                                ['High', 'Medium', 'Low'],
+                                index=['High', 'Medium', 'Low'].index(todo['priority']),
+                                key=f"priority_{todo['id']}"
+                            )
+                            edited_date = st.date_input(
+                                "Due date:",
+                                value=datetime.strptime(todo['due_date'], '%Y-%m-%d').date(),
+                                key=f"date_{todo['id']}"
+                            )
+
+                            col_save, col_cancel = st.columns(2)
+                            with col_save:
+                                if st.button("💾 Save", key=f"save_{todo['id']}", type="primary"):
+                                    st.session_state.todos = utils.update_todo(
+                                        st.session_state.todos,
+                                        todo['id'],
+                                        edited_text,
+                                        edited_priority,
+                                        edited_date.strftime('%Y-%m-%d')
+                                    )
+                                    st.session_state.editing_id = None
+                                    st.rerun()
+                            with col_cancel:
+                                if st.button("❌ Cancel", key=f"cancel_{todo['id']}"):
+                                    st.session_state.editing_id = None
+                                    st.rerun()
+                        else:
+                            # Display mode
+                            completed = st.checkbox(
+                                todo['text'],
+                                value=todo['completed'],
+                                key=f"check_{todo['id']}",
+                                help=f"Priority: {todo['priority']} | Due: {todo['due_date']}"
+                            )
+                            if completed != todo['completed']:
+                                st.session_state.todos = utils.toggle_todo(st.session_state.todos, todo['id'])
+                                st.rerun()
+
+                            # Show priority and due date
+                            priority_color = {'High': '🔴', 'Medium': '🟡', 'Low': '🟢'}
+                            st.markdown(
+                                f"<small style='color: #666;'>{priority_color[todo['priority']]} {todo['priority']} Priority | 📅 Due: {todo['due_date']}</small>",
+                                unsafe_allow_html=True
+                            )
+
+                    with col_actions:
+                        if not todo['completed'] and st.session_state.editing_id != todo['id']:
+                            if st.button("✏️", key=f"edit_btn_{todo['id']}", help="Edit task"):
+                                st.session_state.editing_id = todo['id']
+                                st.rerun()
+                        if st.button("🗑️", key=f"delete_{todo['id']}", help="Delete task"):
+                            st.session_state.todos = utils.delete_todo(st.session_state.todos, todo['id'])
+                            st.rerun()
+
+                    st.divider()
+
+    with col2:
+        st.header("➕ Add New Task")
+
+        with st.form("add_todo_form"):
+            task_text = st.text_area(
+                "Task description:",
+                placeholder="Enter your task here...",
+                height=100
+            )
+            
+            priority = st.selectbox(
+                "Priority:",
+                ['High', 'Medium', 'Low'],
+                index=1
+            )
+            
+            due_date = st.date_input(
+                "Due date:",
+                value=date.today()
+            )
+            
+            submit_button = st.form_submit_button("Add Task", type="primary")
+
+            if submit_button and task_text.strip():
+                new_todo = utils.create_todo(
+                    task_text.strip(),
+                    priority,
+                    due_date.strftime('%Y-%m-%d')
+                )
+                st.session_state.todos.append(new_todo)
+                st.rerun()
+                st.success("Task added successfully!")
+
+        st.divider()
+
+        st.header("📈 Progress")
+        if stats['total'] > 0:
+            # Progress bar
+            progress_value = stats['completed'] / stats['total']
+            st.progress(progress_value)
+            st.caption(f"{stats['completed']} of {stats['total']} tasks completed")
+
+            # Priority breakdown
+            st.subheader("Priority Breakdown")
+            priority_stats = utils.get_priority_stats(st.session_state.todos)
+            for priority in ['High', 'Medium', 'Low']:
+                if priority_stats[priority] > 0:
+                    st.write(f"🔴 {priority}: {priority_stats[priority]} tasks")
+
+    # Footer
+    st.markdown("---")
+    st.markdown(
+        "<div style='text-align: center; color: #666; font-size: 12px;'>"
+        "💡 Tip: Click on a task to mark it complete, use the edit button to modify, or delete when done!"
+        "</div>",
+        unsafe_allow_html=True
+    )
+
+if __name__ == "__main__":
+    main()