import { z } from "zod/v4";
import { LIMITS } from "@/lib/limits";
import { VIBES } from "@/lib/vibe";

const optionalTrimmed = (max: number, label: string) =>
  z.preprocess(
    (val) => {
      if (val == null) return undefined;
      const s = String(val).trim();
      return s === "" ? undefined : s;
    },
    z.string().max(max, `${label} maksimal ${max} karakter`).optional()
  );

const interestSchema = z
  .string()
  .trim()
  .min(2, "Minat minimal 2 karakter")
  .max(
    LIMITS.MAX_PROFILE_INTEREST_LENGTH,
    `Setiap minat maksimal ${LIMITS.MAX_PROFILE_INTEREST_LENGTH} karakter`
  )
  .regex(
    /^[a-zA-Z0-9 \-]+$/,
    "Minat hanya boleh huruf, angka, spasi, atau strip"
  );

export const updateProfileSchema = z.object({
  bio: optionalTrimmed(LIMITS.MAX_PROFILE_BIO_LENGTH, "Bio"),
  city: optionalTrimmed(LIMITS.MAX_PROFILE_CITY_LENGTH, "Kota"),
  instagram: z.preprocess(
    (val) => {
      if (val == null) return undefined;
      const s = String(val).trim().replace(/^@/, "");
      return s === "" ? undefined : s;
    },
    z
      .string()
      .max(
        LIMITS.MAX_PROFILE_INSTAGRAM_LENGTH,
        `Instagram maksimal ${LIMITS.MAX_PROFILE_INSTAGRAM_LENGTH} karakter`
      )
      .regex(
        /^[a-zA-Z0-9._]+$/,
        "Username Instagram hanya boleh huruf, angka, titik, atau underscore"
      )
      .optional()
  ),
  interests: z
    .array(interestSchema)
    .max(
      LIMITS.MAX_PROFILE_INTERESTS_COUNT,
      `Maksimal ${LIMITS.MAX_PROFILE_INTERESTS_COUNT} minat`
    )
    .default([]),
  vibe: z.preprocess(
    (val) => {
      if (val == null) return undefined;
      const s = String(val).trim();
      return s === "" ? undefined : s;
    },
    z.enum([...VIBES]).optional()
  ),
});

export type UpdateProfileInput = z.infer<typeof updateProfileSchema>;