Initial commit - Route Commerce platform

src/app/api/ai/campaign-writer/route.ts

@@ -0,0 +1,64 @@
+import { NextRequest, NextResponse } from "next/server";
+import { getAdminUser } from "@/lib/admin-permissions";
+import { getAIClient } from "@/actions/integrations/ai-providers";
+
+export async function POST(req: NextRequest) {
+  const adminUser = await getAdminUser();
+  if (!adminUser) {
+    return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+  }
+  if (!adminUser.can_manage_messages) {
+    return NextResponse.json({ error: "Forbidden" }, { status: 403 });
+  }
+
+  const { topic, brandId, brandName } = await req.json();
+  if (!topic) {
+    return NextResponse.json({ error: "topic is required" }, { status: 400 });
+  }
+
+  // Brand scoping
+  const effectiveBrandId = adminUser.brand_id ?? brandId ?? null;
+  if (!effectiveBrandId) {
+    return NextResponse.json({ error: "Brand ID required" }, { status: 400 });
+  }
+  if (adminUser.role === "brand_admin" && adminUser.brand_id !== brandId) {
+    return NextResponse.json({ error: "Not authorized for this brand" }, { status: 403 });
+  }
+
+  const aiResult = await getAIClient(effectiveBrandId);
+  if (!aiResult.client) {
+    return NextResponse.json({ error: "error" in aiResult ? aiResult.error : "AI not configured" }, { status: 503 });
+  }
+
+  const systemPrompt = `You are a campaign idea generator for Route Commerce, a B2B fresh produce wholesale platform.
+Given a topic, generate exactly 3 campaign ideas for a produce brand.
+Each idea should include: angle (one sentence describing the campaign approach), subject line (compelling, max 60 chars), body (3-4 sentences, persuasive, fits brand voice).
+
+Return valid JSON: { "ideas": [{ "angle": "...", "subject": "...", "body": "..." }] }
+
+Brand voice: friendly, transparent, emphasizes freshness and local origin.
+Audience: wholesale produce buyers, restaurant owners, farm stand operators.`;
+
+  try {
+    const client = aiResult.client as { chat: { completions: { create: (opts: unknown) => Promise<{ choices: Array<{ message: { content: string } }> }> } } };
+    const response = await client.chat.completions.create({
+      model: aiResult.model,
+      messages: [
+        { role: "system", content: systemPrompt },
+        { role: "user", content: `Topic: ${topic}\nBrand: ${brandName || "our produce brand"}` },
+      ],
+      response_format: { type: "json_object" },
+      temperature: 0.8,
+    });
+
+    const content = response.choices[0]?.message?.content;
+    if (!content) {
+      return NextResponse.json({ error: "No response from AI" }, { status: 500 });
+    }
+
+    const parsed = JSON.parse(content);
+    return NextResponse.json({ ideas: parsed.ideas ?? [] });
+  } catch (err) {
+    return NextResponse.json({ error: "Generation failed" }, { status: 500 });
+  }
+}