added functions

functions/todos-delete-batch.js

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+/* 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)
+            }
+        })
+}

functions/todos-delete.js

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+/* code from functions/todos-update.js */
+const faunadb = require('faunadb')
+const getId = require('./utils/getId')
+
+const q = faunadb.query
+const client = new faunadb.Client({
+    secret: process.env.FAUNADB_SERVER_SECRET
+})
+
+exports.handler = (event, context) => {
+    const data = JSON.parse(event.body)
+    const id = getId(event.path)
+    console.log(`Function 'todo-update' invoked. update id: ${id}`)
+    return client.query(q.Update(q.Ref(`classes/todos/${id}`), { data }))
+        .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)
+            }
+        })
+}

functions/todos-read-all.js

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+/* 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)
+            }
+        })
+}

functions/todos-read.js

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+/* code from functions/todos-read.js */
+/* Import faunaDB sdk */
+const faunadb = require('faunadb')
+const getId = require('./utils/getId')
+
+const q = faunadb.query
+const client = new faunadb.Client({
+    secret: process.env.FAUNADB_SERVER_SECRET
+})
+
+exports.handler = (event, context) => {
+    const id = getId(event.path)
+    console.log(`Function 'todo-read' invoked. Read id: ${id}`)
+    return client.query(q.Get(q.Ref(`classes/todos/${id}`)))
+        .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)
+            }
+        })
+}

functions/todos-update.js

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+/* code from functions/todos-update.js */
+const faunadb = require('faunadb')
+const getId = require('./utils/getId')
+
+const q = faunadb.query
+const client = new faunadb.Client({
+    secret: process.env.FAUNADB_SERVER_SECRET
+})
+
+exports.handler = (event, context) => {
+    const data = JSON.parse(event.body)
+    const id = getId(event.path)
+    console.log(`Function 'todo-update' invoked. update id: ${id}`)
+    return client.query(q.Update(q.Ref(`classes/todos/${id}`), { data }))
+        .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)
+            }
+        })
+}