// routes/api/update/payment_method.ts
import { define } from "../../../utils.ts";
import { updatePaymentMethod } from "../../../services/paymentService.ts";
import { SessionCookie } from "../../auth/callback.ts";

export const handler = define.handlers({
  async POST(ctx) {
    try {
      const stateData: SessionCookie = ctx.state.data;

      const contentType = ctx.req.headers.get("content-type") || "";
      let data: Record<string, string | boolean> = {};
      let sender: string | null = null;
      let isJsonRequest = false;

      // Handle both JSON and form data
      if (contentType.includes("application/json")) {
        isJsonRequest = true;
        const jsonData = await ctx.req.json();
        data = jsonData;
      } else {
        const formData = await ctx.req.formData();
        sender = formData.get("sender")?.toString() || null;

        data = {
          id: formData.get("id")?.toString() || "",
          bank_name: formData.get("bank_name")?.toString() || "",
          account_type: formData.get("account_type")?.toString() || "",
          routing_number_encrypted:
            formData.get("routing_number_encrypted")?.toString() || "",
          account_number_encrypted:
            formData.get("account_number_encrypted")?.toString() || "",
          is_default: formData.get("is_default") === "true",
        };
      }

      const id = data.id as string;
      if (!id) {
        return new Response(
          JSON.stringify({
            error: "Payment method ID is required",
          }),
          {
            status: 400,
            headers: { "Content-Type": "application/json" },
          },
        );
      }

      // Build update object with only provided fields
      const updates: any = {};
      if (data.bank_name) updates.bank_name = data.bank_name;
      if (data.account_type) updates.account_type = data.account_type;
      if (data.routing_number_encrypted) {
        updates.routing_number_encrypted = data.routing_number_encrypted;
      }
      if (data.account_number_encrypted) {
        updates.account_number_encrypted = data.account_number_encrypted;
      }
      if (data.is_default !== undefined) updates.is_default = data.is_default;

      const result = await updatePaymentMethod(id, updates);

      // Return appropriate response based on request type
      if (isJsonRequest) {
        return new Response(
          JSON.stringify({
            success: true,
            payment_method: result[0],
          }),
          {
            status: 200,
            headers: { "Content-Type": "application/json" },
          },
        );
      } else {
        // Redirect back to the sender URL
        const senderPath = sender?.toString() || "/";
        let redirectUrl = senderPath;
        try {
          if (senderPath.startsWith("/")) {
            const url = new URL(ctx.req.url);
            redirectUrl = url.origin + senderPath;
          }
        } catch (_) {
          // fallback: just use senderPath
        }
        return Response.redirect(redirectUrl, 303);
      }
    } catch (e) {
      return new Response(JSON.stringify({ error: e }), {
        status: 500,
        headers: { "Content-Type": "application/json" },
      });
    }
  },
});