since3-portal/modules/admin/actions/client.ts

"use server";
import { createAdminClient } from "@/lib/supabase/admin";
import { verifySession } from "@/lib/supabase/dal";
import { generatePassword } from "@/lib/generate-password";
import { getAppUrl } from "@/modules/shared/mail/app-url";
import { sendMail } from "@/modules/shared/mail/send-mail";
import { welcomeMail } from "@/modules/shared/mail/templates";
import * as z from "zod";



const CreateClientSchema = z.object({
    name: z.string().min(3, {error: "Mindestens drei Zeichen eingeben"}),
    email: z.email({  error: "Bitte eine gültige Email eingeben." })
})

export type CreateClientState =
    | { error: string }
    | { success: true; email: string; password: string; welcomeMailSent: boolean }
    | undefined;

export async function createClient(
    _prevState: CreateClientState,
    formData: FormData
): Promise<CreateClientState> {

    const session = await verifySession();
    if (!session.isAdmin) {
        return { error: "Keine Berechtigung." }
    }

    const validatedFields = CreateClientSchema.safeParse({
        name: formData.get("name"),
        email: formData.get("email")
    });

    if (!validatedFields.success) {
        const { fieldErrors } = z.flattenError(validatedFields.error);
        const message = fieldErrors.email?.[0] ?? fieldErrors.name?.[0] ?? "Bitte Name und Email ausfüllen.";
        return { error: message }
    }

    const { name, email } = validatedFields.data;
    const password = generatePassword();

    const supabase = createAdminClient();
    const { data, error } = await supabase.auth.admin.createUser({
        email,
        password,
        email_confirm: true,
        user_metadata: { name },
    });

    if (error) {
        return { error: error.code === "email_exists" ? "Diese Email ist bereits vergeben." : "Client konnte nicht angelegt werden." }
    }

    // Der Account existiert bereits: ein Mailfehler darf nicht verhindern, dass das Passwort angezeigt wird.
    let welcomeMailSent = false;
    try {
        const sent = await sendMail({
            to: email,
            ...welcomeMail({ name, email, appUrl: await getAppUrl() }),
            type: "welcome",
            idempotencyKey: `welcome-${data.user.id}`,
        });
        welcomeMailSent = sent.ok;
    } catch (mailError) {
        console.error("[mail] Willkommensmail fehlgeschlagen:", mailError);
    }

    return { success: true, email, password, welcomeMailSent }
}