init commit,

99_references/supabase-examples/edge-functions/supabase/functions/restful-tasks/index.ts

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+// Follow this setup guide to integrate the Deno language server with your editor:
+// https://deno.land/manual/getting_started/setup_your_environment
+// This enables autocomplete, go to definition, etc.
+
+import { createClient, SupabaseClient } from 'jsr:@supabase/supabase-js@2'
+
+const corsHeaders = {
+  'Access-Control-Allow-Origin': '*',
+  'Access-Control-Allow-Headers': 'authorization, x-client-info, apikey',
+  'Access-Control-Allow-Methods': 'POST, GET, OPTIONS, PUT, DELETE',
+}
+
+interface Task {
+  name: string
+  status: number
+}
+
+async function getTask(supabaseClient: SupabaseClient, id: string) {
+  const { data: task, error } = await supabaseClient.from('tasks').select('*').eq('id', id)
+  if (error) throw error
+
+  return new Response(JSON.stringify({ task }), {
+    headers: { ...corsHeaders, 'Content-Type': 'application/json' },
+    status: 200,
+  })
+}
+
+async function getAllTasks(supabaseClient: SupabaseClient) {
+  const { data: tasks, error } = await supabaseClient.from('tasks').select('*')
+  if (error) throw error
+
+  return new Response(JSON.stringify({ tasks }), {
+    headers: { ...corsHeaders, 'Content-Type': 'application/json' },
+    status: 200,
+  })
+}
+
+async function deleteTask(supabaseClient: SupabaseClient, id: string) {
+  const { error } = await supabaseClient.from('tasks').delete().eq('id', id)
+  if (error) throw error
+
+  return new Response(JSON.stringify({}), {
+    headers: { ...corsHeaders, 'Content-Type': 'application/json' },
+    status: 200,
+  })
+}
+
+async function updateTask(supabaseClient: SupabaseClient, id: string, task: Task) {
+  const { error } = await supabaseClient.from('tasks').update(task).eq('id', id)
+  if (error) throw error
+
+  return new Response(JSON.stringify({ task }), {
+    headers: { ...corsHeaders, 'Content-Type': 'application/json' },
+    status: 200,
+  })
+}
+
+async function createTask(supabaseClient: SupabaseClient, task: Task) {
+  const { error } = await supabaseClient.from('tasks').insert(task)
+  if (error) throw error
+
+  return new Response(JSON.stringify({ task }), {
+    headers: { ...corsHeaders, 'Content-Type': 'application/json' },
+    status: 200,
+  })
+}
+
+Deno.serve(async (req) => {
+  const { url, method } = req
+
+  // This is needed if you're planning to invoke your function from a browser.
+  if (method === 'OPTIONS') {
+    return new Response('ok', { headers: corsHeaders })
+  }
+
+  try {
+    // Create a Supabase client with the Auth context of the logged in user.
+    const supabaseClient = createClient(
+      // Supabase API URL - env var exported by default.
+      Deno.env.get('SUPABASE_URL') ?? '',
+      // Supabase API ANON KEY - env var exported by default.
+      Deno.env.get('SUPABASE_ANON_KEY') ?? '',
+      // Create client with Auth context of the user that called the function.
+      // This way your row-level-security (RLS) policies are applied.
+      {
+        global: {
+          headers: { Authorization: req.headers.get('Authorization')! },
+        },
+      }
+    )
+
+    // For more details on URLPattern, check https://developer.mozilla.org/en-US/docs/Web/API/URL_Pattern_API
+    const taskPattern = new URLPattern({ pathname: '/restful-tasks/:id' })
+    const matchingPath = taskPattern.exec(url)
+    const id = matchingPath ? matchingPath.pathname.groups.id : null
+
+    let task = null
+    if (method === 'POST' || method === 'PUT') {
+      const body = await req.json()
+      task = body.task
+    }
+
+    // call relevant method based on method and id
+    switch (true) {
+      case id && method === 'GET':
+        return getTask(supabaseClient, id as string)
+      case id && method === 'PUT':
+        return updateTask(supabaseClient, id as string, task)
+      case id && method === 'DELETE':
+        return deleteTask(supabaseClient, id as string)
+      case method === 'POST':
+        return createTask(supabaseClient, task)
+      case method === 'GET':
+        return getAllTasks(supabaseClient)
+      default:
+        return getAllTasks(supabaseClient)
+    }
+  } catch (error) {
+    console.error(error)
+
+    return new Response(JSON.stringify({ error: error.message }), {
+      headers: { ...corsHeaders, 'Content-Type': 'application/json' },
+      status: 400,
+    })
+  }
+})