feat: add account service (#14)

* feat: add DEEPGRAM and OPENAI keys to env

* feat: init account service

* Revert "feat: add DEEPGRAM and OPENAI keys to env"

This reverts commit d12879b.

* feat: add service role key

* feat: use supabase server client

* feat: use `currentUser` in the account service

.env.example

@@ -1,2 +1,5 @@
+NEXT_PUBLIC_SUPABASE_ANON_KEY=
 NEXT_PUBLIC_SUPABASE_URL=
-NEXT_PUBLIC_SUPABASE_ANON_KEY=
+
+SUPABASE_SERVICE_ROLE_KEY=
+SUPABASE_URL=

env.mjs

@@ -16,11 +16,10 @@ const getGitSha = () => {
 
 const envSchema = z.object({
   GIT_SHA: z.string().min(1).default(getGitSha()),
-  NEXT_PUBLIC_SUPABASE_ANON_KEY: z.string(),
-  NEXT_PUBLIC_SUPABASE_URL: z.string(),
-  // We don't have these configurations yet.
-  SUPABASE_SERVICE_ROLE_KEY: z.string().default(''),
-  SUPABASE_URL: z.string().default(''),
+  NEXT_PUBLIC_SUPABASE_ANON_KEY: z.string().min(1),
+  NEXT_PUBLIC_SUPABASE_URL: z.string().min(1),
+  SUPABASE_SERVICE_ROLE_KEY: z.string().min(1),
+  SUPABASE_URL: z.string().min(1),
 });
 
 const envValidation = envSchema.safeParse(process.env);

lib/services/account.ts

@@ -0,0 +1,58 @@
+import { cookies } from 'next/headers';
+
+import { createSupabaseServerClient } from './supabase/server';
+
+const getUserId = async () => {
+  const supabase = createSupabaseServerClient(cookies());
+
+  const userQuery = await supabase.auth.getUser();
+
+  if (userQuery.error) {
+    throw new Error(userQuery.error.message);
+  }
+
+  return userQuery.data.user.id;
+};
+
+export const fetchAccountAICredits = async () => {
+  const supabase = createSupabaseServerClient(cookies());
+
+  const accountQuery = await supabase
+    .from('account')
+    .select('ai_credit')
+    .eq('user_id', await getUserId())
+    .single();
+
+  if (accountQuery.error) {
+    throw new Error(accountQuery.error.message);
+  }
+
+  return accountQuery.data.ai_credit || 0;
+};
+
+export const validateAccountAICredits = async () => {
+  const aiCredits = await fetchAccountAICredits();
+
+  if (aiCredits <= 0) {
+    throw new Error('User does not have any AI credits');
+  }
+
+  return aiCredits;
+};
+
+export const updateAccountAICredits = async (amount: number) => {
+  const supabase = createSupabaseServerClient(cookies());
+
+  const accountQuery = await supabase
+    .from('account')
+    .update({ ai_credit: amount })
+    .eq('user_id', await getUserId())
+    .select('ai_credit')
+    .single();
+
+  if (accountQuery.error) {
+    throw new Error(accountQuery.error.message);
+  }
+
+  return accountQuery.data.ai_credit || 0;
+};