From 17a842766836e7983c608f299084fa5f5f444d41 Mon Sep 17 00:00:00 2001
From: Altay <altay@zebrastik.com>
Date: Sun, 17 Dec 2023 13:03:27 +0300
Subject: [PATCH] feat: increment/decrement `ai_credits` on `ai` services

---
 .../ai/create-episode-summary-stream.ts       | 46 +++++----
 lib/services/ai/transcribe-episode.ts         | 97 +++++++++++--------
 2 files changed, 80 insertions(+), 63 deletions(-)

diff --git a/lib/services/ai/create-episode-summary-stream.ts b/lib/services/ai/create-episode-summary-stream.ts
index 161658d..5263601 100644
--- a/lib/services/ai/create-episode-summary-stream.ts
+++ b/lib/services/ai/create-episode-summary-stream.ts
@@ -4,6 +4,7 @@ import type { OpenAI } from 'openai';
 import { OpenAIStream } from 'ai';
 import { promptTokensEstimate } from 'openai-chat-tokens';
 
+import { incrementAccountAICredits } from '../account';
 import { saveEpisodeContentSummary } from '../episode-content';
 import { openai } from './openai';
 
@@ -26,32 +27,37 @@ export async function createEpisodeSummaryStream({
   episode: Pick<Tables<'episode'>, 'id' | 'title'>;
   transcription: string;
 }) {
-  const messages: OpenAI.Chat.Completions.ChatCompletionMessageParam[] = [
-    {
-      content: `
+  try {
+    const messages: OpenAI.Chat.Completions.ChatCompletionMessageParam[] = [
+      {
+        content: `
         Summarize the following transcription of the podcast episode "${episode.title}" by following these guidelines:
           - Skip the ads and intro.
           - Use paragraphs or bullet point lists.
           - Prefer short, clean sentences.
           - Write the summary in the same language as the transcription.
       `,
-      role: 'system',
-    },
-    {
-      content: transcription,
-      role: 'system',
-    },
-  ];
+        role: 'system',
+      },
+      {
+        content: transcription,
+        role: 'system',
+      },
+    ];
 
-  const response = await openai.chat.completions.create({
-    messages,
-    model: getModel(promptTokensEstimate({ messages })),
-    stream: true,
-  });
+    const response = await openai.chat.completions.create({
+      messages,
+      model: getModel(promptTokensEstimate({ messages })),
+      stream: true,
+    });
 
-  return OpenAIStream(response, {
-    onCompletion: async (completion) => {
-      await saveEpisodeContentSummary(episode.id, completion);
-    },
-  });
+    return OpenAIStream(response, {
+      onCompletion: async (completion) => {
+        await saveEpisodeContentSummary(episode.id, completion);
+      },
+    });
+  } catch (error) {
+    await incrementAccountAICredits();
+    throw error;
+  }
 }
diff --git a/lib/services/ai/transcribe-episode.ts b/lib/services/ai/transcribe-episode.ts
index acae1f7..0c5cc2b 100644
--- a/lib/services/ai/transcribe-episode.ts
+++ b/lib/services/ai/transcribe-episode.ts
@@ -6,60 +6,71 @@ import { DatabaseError } from '@/lib/errors';
 import { getFinalRedirectURL } from '@/lib/utils/get-final-redirect-url';
 import { cookies } from 'next/headers';
 
-import { getAccountId } from '../account';
+import {
+  decrementAccountAICredits,
+  getAccountId,
+  incrementAccountAICredits,
+} from '../account';
 import { createSupabaseServerClient } from '../supabase/server';
 import { transcribeAudio } from './deepgram';
 
 export const transcribeEpisode = async (id: Tables<'episode'>['id']) => {
-  const supabase = createSupabaseServerClient(cookies());
+  try {
+    await decrementAccountAICredits();
 
-  const existingEpisodeContentQuery = await supabase
-    .from('episode_content')
-    .select('transcription')
-    .eq('episode', id);
+    const supabase = createSupabaseServerClient(cookies());
 
-  if (existingEpisodeContentQuery.error) {
-    throw new DatabaseError(existingEpisodeContentQuery.error);
-  }
+    const existingEpisodeContentQuery = await supabase
+      .from('episode_content')
+      .select('transcription')
+      .eq('episode', id);
 
-  if (existingEpisodeContentQuery.data[0]?.transcription) {
-    return existingEpisodeContentQuery.data[0].transcription;
-  }
+    if (existingEpisodeContentQuery.error) {
+      throw new DatabaseError(existingEpisodeContentQuery.error);
+    }
 
-  const episodeQuery = await supabase
-    .from('episode')
-    .select('audio_url, show(language)')
-    .eq('id', id)
-    .single();
+    if (existingEpisodeContentQuery.data[0]?.transcription) {
+      return existingEpisodeContentQuery.data[0].transcription;
+    }
 
-  if (episodeQuery.error) {
-    throw new DatabaseError(episodeQuery.error);
-  }
+    const episodeQuery = await supabase
+      .from('episode')
+      .select('audio_url, show(language)')
+      .eq('id', id)
+      .single();
 
-  const url = await getFinalRedirectURL(episodeQuery.data.audio_url);
-  const transcription = await transcribeAudio({
-    language: episodeQuery.data.show?.language ?? undefined,
-    url,
-  });
+    if (episodeQuery.error) {
+      throw new DatabaseError(episodeQuery.error);
+    }
 
-  const updateEpisodeContentQuery = await supabase
-    .from('episode_content')
-    .upsert(
-      {
-        account: await getAccountId(),
-        episode: id,
-        transcription,
-      },
-      {
-        onConflict: 'episode',
-      },
-    )
-    .select('transcription')
-    .single();
+    const url = await getFinalRedirectURL(episodeQuery.data.audio_url);
+    const transcription = await transcribeAudio({
+      language: episodeQuery.data.show?.language ?? undefined,
+      url,
+    });
 
-  if (updateEpisodeContentQuery.error) {
-    throw new DatabaseError(updateEpisodeContentQuery.error);
-  }
+    const updateEpisodeContentQuery = await supabase
+      .from('episode_content')
+      .upsert(
+        {
+          account: await getAccountId(),
+          episode: id,
+          transcription,
+        },
+        {
+          onConflict: 'episode',
+        },
+      )
+      .select('transcription')
+      .single();
+
+    if (updateEpisodeContentQuery.error) {
+      throw new DatabaseError(updateEpisodeContentQuery.error);
+    }
 
-  return transcription;
+    return transcription;
+  } catch (error) {
+    await incrementAccountAICredits();
+    throw error;
+  }
 };