'use client'

import { useState } from 'react'
import { useHabits } from '@/hooks/useHabits'
import { Plus, ListTodo } from 'lucide-react'
import EmptyState from './EmptyState'
import { Button } from '@/components/ui/button'
import HabitItem from './HabitItem'
import AddEditHabitModal from './AddEditHabitModal'
import ConfirmDialog from './ConfirmDialog'
import { Habit } from '@/lib/types'

export default function HabitList() {
  const { habits, addHabit, editHabit, deleteHabit, completeHabit, undoComplete } = useHabits()
  const [isModalOpen, setIsModalOpen] = useState(false)
  const [editingHabit, setEditingHabit] = useState<Habit | null>(null)
  const [deleteConfirmation, setDeleteConfirmation] = useState<{ isOpen: boolean, habitId: string | null }>({
    isOpen: false,
    habitId: null
  })


  return (
    <div className="container mx-auto px-4 py-8">
      <div className="flex justify-between items-center mb-6">
        <h1 className="text-3xl font-bold">My Habits</h1>
        <Button onClick={() => setIsModalOpen(true)}>
          <Plus className="mr-2 h-4 w-4" /> Add Habit
        </Button>
      </div>
      <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
        {habits.length === 0 ? (
          <div className="col-span-2">
            <EmptyState
              icon={ListTodo}
              title="No habits yet"
              description="Create your first habit to start tracking your progress"
            />
          </div>
        ) : (
          habits.map((habit) => (
          <HabitItem
            key={habit.id}
            habit={habit}
            onEdit={() => {
              setEditingHabit(habit)
              setIsModalOpen(true)
            }}
            onDelete={() => setDeleteConfirmation({ isOpen: true, habitId: habit.id })}
            onComplete={() => completeHabit(habit)}
            onUndo={() => undoComplete(habit)}
          />
          ))
        )}
      </div>
      <AddEditHabitModal
        isOpen={isModalOpen}
        onClose={() => {
          setIsModalOpen(false)
          setEditingHabit(null)
        }}
        onSave={async (habit) => {
          if (editingHabit) {
            await editHabit(editingHabit)
          } else {
            await addHabit(habit)
          }
          setIsModalOpen(false)
          setEditingHabit(null)
        }}
        habit={editingHabit}
      />
      <ConfirmDialog
        isOpen={deleteConfirmation.isOpen}
        onClose={() => setDeleteConfirmation({ isOpen: false, habitId: null })}
        onConfirm={() => {
          if (deleteConfirmation.habitId) {
            deleteHabit(deleteConfirmation.habitId)
          }
          setDeleteConfirmation({ isOpen: false, habitId: null })
        }}
        title="Delete Habit"
        message="Are you sure you want to delete this habit? This action cannot be undone."
        confirmText="Delete"
      />
    </div>
  )
}