feat: complete HookLab MVP - TikTok Shop coaching platform

Full-stack Next.js 15 application with:
- Landing page with marketing components (Hero, Testimonials, Pricing, FAQ)
- Multi-step candidature form with API route
- Stripe Checkout integration (subscription + webhooks)
- Supabase Auth (login/register) with middleware protection
- Dashboard with progress tracking and module system
- Formations pages with completion tracking
- Profile management with password change
- Database schema with RLS policies
- Resend email integration for transactional emails

Stack: Next.js 15, TypeScript, Tailwind CSS v4, Supabase, Stripe, Resend

https://claude.ai/code/session_01H2aRGDaKgarPvhay2HxN6Y

app/api/candidature/route.ts

@@ -0,0 +1,132 @@
+import { NextResponse } from "next/server";
+import { createAdminClient } from "@/lib/supabase/server";
+import type { CandidatureInsert } from "@/types/database.types";
+
+export async function POST(request: Request) {
+  try {
+    const body = await request.json();
+
+    // Validation des champs requis
+    const requiredFields: (keyof CandidatureInsert)[] = [
+      "email",
+      "firstname",
+      "phone",
+      "persona",
+      "age",
+      "experience",
+      "time_daily",
+      "availability",
+      "start_date",
+      "motivation",
+      "monthly_goal",
+      "biggest_fear",
+    ];
+
+    for (const field of requiredFields) {
+      if (!body[field] && body[field] !== 0) {
+        return NextResponse.json(
+          { error: `Le champ "${field}" est requis.` },
+          { status: 400 }
+        );
+      }
+    }
+
+    // Validation email basique
+    const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
+    if (!emailRegex.test(body.email)) {
+      return NextResponse.json(
+        { error: "Adresse email invalide." },
+        { status: 400 }
+      );
+    }
+
+    // Validation age
+    if (body.age < 18 || body.age > 65) {
+      return NextResponse.json(
+        { error: "L'age doit etre entre 18 et 65 ans." },
+        { status: 400 }
+      );
+    }
+
+    const supabase = createAdminClient();
+
+    // Vérifier si une candidature existe déjà avec cet email
+    const { data: existing } = await supabase
+      .from("candidatures")
+      .select("id")
+      .eq("email", body.email)
+      .single() as { data: { id: string } | null };
+
+    if (existing) {
+      return NextResponse.json(
+        { error: "Une candidature avec cet email existe deja." },
+        { status: 409 }
+      );
+    }
+
+    // Insérer la candidature
+    const candidature: CandidatureInsert = {
+      email: body.email,
+      firstname: body.firstname,
+      phone: body.phone,
+      persona: body.persona,
+      age: body.age,
+      experience: body.experience,
+      time_daily: body.time_daily,
+      availability: body.availability,
+      start_date: body.start_date,
+      motivation: body.motivation,
+      monthly_goal: body.monthly_goal,
+      biggest_fear: body.biggest_fear,
+      tiktok_username: body.tiktok_username || null,
+    };
+
+    const { error: insertError } = await supabase
+      .from("candidatures")
+      .insert(candidature as never);
+
+    if (insertError) {
+      console.error("Erreur insertion candidature:", insertError);
+      return NextResponse.json(
+        { error: "Erreur lors de l'enregistrement de la candidature." },
+        { status: 500 }
+      );
+    }
+
+    // Envoi email de confirmation (Resend)
+    if (process.env.RESEND_API_KEY && process.env.RESEND_API_KEY !== "re_your-api-key") {
+      try {
+        const { Resend } = await import("resend");
+        const resend = new Resend(process.env.RESEND_API_KEY);
+
+        await resend.emails.send({
+          from: "HookLab <noreply@hooklab.fr>",
+          to: body.email,
+          subject: "Candidature HookLab recue !",
+          html: `
+            <div style="font-family: Arial, sans-serif; max-width: 600px; margin: 0 auto;">
+              <h1 style="color: #6D5EF6;">Candidature recue !</h1>
+              <p>Salut ${body.firstname},</p>
+              <p>Merci pour ta candidature au programme HookLab !</p>
+              <p>Notre equipe va etudier ton profil et te repondre sous <strong>24 heures</strong>.</p>
+              <p>A tres vite,<br/>L'equipe HookLab</p>
+            </div>
+          `,
+        });
+      } catch (emailError) {
+        // Log l'erreur mais ne bloque pas la candidature
+        console.error("Erreur envoi email:", emailError);
+      }
+    }
+
+    return NextResponse.json(
+      { message: "Candidature enregistree avec succes." },
+      { status: 201 }
+    );
+  } catch {
+    return NextResponse.json(
+      { error: "Erreur serveur. Veuillez reessayer." },
+      { status: 500 }
+    );
+  }
+}