/* code from functions/todos-read-all.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 = (event, context) => {
    console.log('Function `todo-read-all` invoked')
    return client.query(q.Paginate(q.Match(q.Ref('indexes/all_todos'))))
        .then((response) => {
            const todoRefs = response.data
            console.log('Todo refs', todoRefs)
            console.log(`${todoRefs.length} todos found`)
            // create new query out of todo refs. http://bit.ly/2LG3MLg
            const getAllTodoDataQuery = todoRefs.map((ref) => {
                return q.Get(ref)
            })
            // then query the refs
            return client.query(getAllTodoDataQuery).then((ret) => {
                return {
                    statusCode: 200,
                    body: JSON.stringify(ret)
                }
            })
        }).catch((error) => {
            console.log('error', error)
            return {
                statusCode: 400,
                body: JSON.stringify(error)
            }
        })
}