/* code from functions/todos-delete-batch.js */
/* Import faunaDB sdk */
const faunadb = require('faunadb')

const q = faunadb.query
const client = new faunadb.Client({
    secret: process.env.FAUNADB_SERVER_SECRET
})

exports.handler = async (event, context) => {
    const data = JSON.parse(event.body)
    console.log('data', data)
    console.log('Function `todo-delete-batch` invoked', data.ids)
    // construct batch query from IDs
    const deleteAllCompletedTodoQuery = data.ids.map((id) => {
        return q.Delete(q.Ref(`classes/todos/${id}`))
    })
    // Hit fauna with the query to delete the completed items
    return client.query(deleteAllCompletedTodoQuery)
        .then((response) => {
            console.log('success', response)
            return {
                statusCode: 200,
                body: JSON.stringify(response)
            }
        }).catch((error) => {
            console.log('error', error)
            return {
                statusCode: 400,
                body: JSON.stringify(error)
            }
        })
}