"use server";

import { revalidatePath } from "next/cache";
import { z } from "zod";
import { requireAuth } from "@/lib/require-auth";
import { getErrorMessage } from "@/lib/errors";
import { actorFromSession } from "@/services/audit";
import {
  acceptSubscriptionTransfer,
  cancelSubscriptionTransfer,
  createSubscriptionTransfer,
  rejectSubscriptionTransfer,
} from "@/services/subscription-transfer";

const createTransferSchema = z.object({
  subscriptionId: z.string().trim().min(1, "请选择要 Push 的套餐"),
  recipientEmail: z.string().trim().email("请输入正确的接收方邮箱"),
  password: z.string().min(1, "请输入当前账户密码"),
  feePayer: z.enum(["SENDER", "RECIPIENT"]),
});

const transferIdSchema = z.string().trim().min(1, "套餐 Push 不存在");
type UserTransferActionResult = { ok: true; id?: string } | { ok: false; error: string };

function revalidateTransferViews(subscriptionId?: string) {
  revalidatePath("/subscriptions");
  revalidatePath("/subscriptions/push");
  revalidatePath("/wallet");
  if (subscriptionId) revalidatePath(`/subscriptions/${subscriptionId}`);
}

export async function createUserSubscriptionTransfer(formData: FormData): Promise<UserTransferActionResult> {
  try {
    const session = await requireAuth();
    const data = createTransferSchema.parse(Object.fromEntries(formData));
    const transfer = await createSubscriptionTransfer({
      senderId: session.user.id,
      recipientEmail: data.recipientEmail,
      subscriptionId: data.subscriptionId,
      password: data.password,
      feePayer: data.feePayer,
      actor: actorFromSession(session),
    });
    revalidateTransferViews(data.subscriptionId);
    return { ok: true, id: transfer.id };
  } catch (error) {
    return { ok: false, error: getErrorMessage(error, "发起套餐 Push 失败") };
  }
}

export async function acceptUserSubscriptionTransfer(transferId: string): Promise<UserTransferActionResult> {
  try {
    const session = await requireAuth();
    const id = transferIdSchema.parse(transferId);
    const transfer = await acceptSubscriptionTransfer({
      transferId: id,
      recipientId: session.user.id,
      actor: actorFromSession(session),
    });
    revalidateTransferViews(transfer.subscriptionId);
    return { ok: true };
  } catch (error) {
    return { ok: false, error: getErrorMessage(error, "接收套餐 Push 失败") };
  }
}

export async function rejectUserSubscriptionTransfer(transferId: string): Promise<UserTransferActionResult> {
  try {
    const session = await requireAuth();
    const id = transferIdSchema.parse(transferId);
    const transfer = await rejectSubscriptionTransfer({
      transferId: id,
      recipientId: session.user.id,
      actor: actorFromSession(session),
    });
    revalidateTransferViews(transfer.subscriptionId);
    return { ok: true };
  } catch (error) {
    return { ok: false, error: getErrorMessage(error, "拒收套餐 Push 失败") };
  }
}

export async function cancelUserSubscriptionTransfer(transferId: string): Promise<UserTransferActionResult> {
  try {
    const session = await requireAuth();
    const id = transferIdSchema.parse(transferId);
    const transfer = await cancelSubscriptionTransfer({
      transferId: id,
      senderId: session.user.id,
      actor: actorFromSession(session),
    });
    revalidateTransferViews(transfer.subscriptionId);
    return { ok: true };
  } catch (error) {
    return { ok: false, error: getErrorMessage(error, "取消套餐 Push 失败") };
  }
}