package com.kubilaycicek.todo_service.service

import com.kubilaycicek.todo_service.data.dto.TodoDTO
import com.kubilaycicek.todo_service.data.model.Todo
import com.kubilaycicek.todo_service.repository.TodoRepository
import org.springframework.stereotype.Service
import java.util.*

@Service
class TodoServiceImpl(var todoRepository: TodoRepository) : TodoService {

    override fun updateTodo(todoDTO: TodoDTO): TodoDTO {
        val todo: Optional<Todo> = todoRepository.findById(todoDTO.id);
        if (todo.isPresent) {
            val todoDb: Todo = todo.get()
            todoDb.name = todoDTO.title
            todoDb.description = todoDTO.description
            todoDb.completed = todoDTO.completed
            todoRepository.save(todoDb)
            return TodoDTO(
                id = todoDb.id, title = todoDb.name, description = todoDb.description, completed = todoDb.completed
            )
        } else return throw Exception()
    }

    override fun saveTodo(todoDTO: TodoDTO): TodoDTO {
        val todoModel: Todo = Todo(
            id = todoDTO.id, name = todoDTO.title, description = todoDTO.description, completed = todoDTO.completed
        );
        val savedTodo = todoRepository.save(todoModel);

        return TodoDTO(
            id = savedTodo.id,
            title = savedTodo.name,
            description = savedTodo.description,
            completed = savedTodo.completed
        )
    }

    override fun getTodo(id: Long): TodoDTO? {
        val todo: Optional<Todo> = todoRepository.findById(id);
        if (todo.isPresent) {
            val todoDb: Todo = todo.get()
            return TodoDTO(
                id = todoDb.id, title = todoDb.name, description = todoDb.description, completed = todoDb.completed
            )
        } else return null
    }

    override fun deleteTodo(id: Long) {
        todoRepository.deleteById(id)
    }

    override fun getTodoList(): MutableList<TodoDTO> {
        var todoDtoList = mutableListOf<TodoDTO>()

        todoRepository.findAll().forEach {
            val add = TodoDTO(
                id = it.id, title = it.name, description = it.description, completed = it.completed
            )
            todoDtoList.add(add)
        }

        return todoDtoList

    }

}