import { z } from "zod";
import { invoiceSchema } from "../billing/schema.js";
import { internetEligibilityDetailsSchema } from "../services/schema.js";
import { residenceCardVerificationSchema } from "../customer/schema.js";

export const activityTypeSchema = z.enum([
  "invoice_created",
  "invoice_paid",
  "service_activated",
  "case_created",
  "case_closed",
]);

export const activitySchema = z.object({
  id: z.string(),
  type: activityTypeSchema,
  title: z.string(),
  description: z.string().optional(),
  date: z.string(),
  relatedId: z.number().optional(),
  metadata: z.record(z.string(), z.unknown()).optional(),
});

export const invoiceActivityMetadataSchema = z
  .object({
    amount: z.number(),
    currency: z.string().optional(),
    dueDate: z.string().optional(),
    invoiceNumber: z.string().optional(),
    status: z.string().optional(),
  })
  .partial()
  .refine(data => typeof data.amount === "number", {
    message: "amount is required",
    path: ["amount"],
  });

export const serviceActivityMetadataSchema = z
  .object({
    productName: z.string().optional(),
    registrationDate: z.string().optional(),
    status: z.string().optional(),
  })
  .partial();

export const dashboardStatsSchema = z.object({
  activeSubscriptions: z.number().int().nonnegative(),
  unpaidInvoices: z.number().int().nonnegative(),
  openCases: z.number().int().nonnegative(),
  recentOrders: z.number().int().nonnegative().optional(),
  totalSpent: z.number().nonnegative().optional(),
  currency: z.string(),
});

export const nextInvoiceSchema = z.object({
  id: z.number().int().positive(),
  dueDate: z.string(),
  amount: z.number(),
  currency: z.string(),
});

export const dashboardSummarySchema = z.object({
  stats: dashboardStatsSchema,
  nextInvoice: nextInvoiceSchema.nullable(),
  recentActivity: z.array(activitySchema),
});

export const dashboardErrorSchema = z.object({
  code: z.string(),
  message: z.string(),
  details: z.record(z.string(), z.unknown()).optional(),
});

export const activityFilterSchema = z.enum(["all", "billing", "orders", "support"]);

export const activityFilterConfigSchema = z.object({
  key: activityFilterSchema,
  label: z.string(),
  types: z.array(activityTypeSchema).optional(),
});

export const dashboardSummaryResponseSchema = dashboardSummarySchema.extend({
  invoices: z.array(invoiceSchema).optional(),
});

// ============================================================================
// Dashboard Tasks (Customer-facing)
// ============================================================================

export const dashboardTaskTypeSchema = z.enum([
  "invoice",
  "payment_method",
  "order",
  "internet_eligibility",
  "id_verification",
  "onboarding",
]);

export const dashboardTaskToneSchema = z.enum(["critical", "warning", "info", "neutral"]);

export const dashboardTaskSchema = z.object({
  id: z.string(),
  priority: z.union([z.literal(1), z.literal(2), z.literal(3), z.literal(4)]),
  type: dashboardTaskTypeSchema,
  title: z.string(),
  description: z.string(),
  actionLabel: z.string(),
  detailHref: z.string().optional(),
  requiresSsoAction: z.boolean().optional(),
  tone: dashboardTaskToneSchema,
  metadata: z
    .object({
      invoiceId: z.number().int().positive().optional(),
      orderId: z.string().optional(),
      amount: z.number().optional(),
      currency: z.string().optional(),
      dueDate: z.string().datetime().optional(),
    })
    .optional(),
});

export const paymentMethodsStatusSchema = z.object({
  /** null indicates the value could not be loaded (avoid incorrect UI gating). */
  totalCount: z.number().int().nonnegative().nullable(),
});

/**
 * Aggregated customer status payload intended to power dashboard + gating UX.
 */
export const meStatusSchema = z.object({
  summary: dashboardSummarySchema,
  paymentMethods: paymentMethodsStatusSchema,
  internetEligibility: internetEligibilityDetailsSchema,
  residenceCardVerification: residenceCardVerificationSchema,
  tasks: z.array(dashboardTaskSchema),
});

export type InvoiceActivityMetadata = z.infer<typeof invoiceActivityMetadataSchema>;
export type ServiceActivityMetadata = z.infer<typeof serviceActivityMetadataSchema>;