import { z } from 'zod';
import { STREAMING_SERVICES } from './services';

export const usernameSchema = z
  .string()
  .trim()
  .toLowerCase()
  .regex(/^[a-z0-9_]{3,32}$/, 'Username must be 3-32 characters: letters, numbers, underscores');

// Trim before validating: iOS keyboards often append a space after autocompleting an email.
const emailSchema = z.string().trim().toLowerCase().pipe(z.email());

const newPasswordSchema = z.string().min(8, 'Password must be at least 8 characters').max(200);

export const registerSchema = z.object({
  username: usernameSchema,
  email: emailSchema,
  password: newPasswordSchema,
});

export const forgotPasswordSchema = z.object({ email: emailSchema });

export const verifyEmailSchema = z.object({ token: z.string().min(20).max(200) });

export const changePasswordSchema = z.object({
  currentPassword: z.string().min(1).max(200),
  newPassword: newPasswordSchema,
});

export const changeEmailSchema = z.object({
  email: emailSchema,
  password: z.string().min(1).max(200),
});

export const resetPasswordSchema = z.object({
  token: z.string().min(20).max(200),
  password: newPasswordSchema,
});

export const loginSchema = z.object({
  email: emailSchema,
  password: z.string().min(1).max(200),
});

export const updateMeSchema = z.object({
  displayName: z.string().trim().max(64).nullable().optional(),
  bio: z.string().trim().max(280).nullable().optional(),
  preferredService: z.enum(STREAMING_SERVICES).nullable().optional(),
  services: z
    .array(z.enum(STREAMING_SERVICES))
    .max(STREAMING_SERVICES.length)
    .transform((s) => [...new Set(s)])
    .nullable()
    .optional(),
  notifyPrefs: z
    .object({ reaction: z.boolean(), follow: z.boolean(), share: z.boolean() })
    .partial()
    .optional(),
  /** Mark onboarding as finished. */
  onboarded: z.literal(true).optional(),
});

/** Send a song to people who follow you. */
export const sendSongSchema = z.object({
  trackId: z.uuid(),
  to: z.array(z.string().min(1).max(32)).min(1).max(20),
  message: z.string().trim().max(280).nullable().optional(),
});

/** A browser's or phone's push subscription (both use Web Push encryption keys). */
export const pushSubscriptionSchema = z.object({
  kind: z.enum(['web', 'unifiedpush']),
  endpoint: z.url({ protocol: /^https?$/ }).max(2000),
  keys: z.object({ p256dh: z.string().min(20).max(200), auth: z.string().min(8).max(100) }),
});

export const setFeaturedSchema = z.union([
  z.object({ deezerId: z.string().regex(/^\d+$/), comment: z.string().trim().max(280).nullable().optional() }),
  z.object({ trackId: z.uuid(), comment: z.string().trim().max(280).nullable().optional() }),
]);

export const connectUsernameSchema = z.object({
  username: z.string().trim().min(1).max(64),
});

export type RegisterInput = z.infer<typeof registerSchema>;
export type LoginInput = z.infer<typeof loginSchema>;
export type ResetPasswordInput = z.infer<typeof resetPasswordSchema>;
export type ChangePasswordInput = z.infer<typeof changePasswordSchema>;
export type ChangeEmailInput = z.infer<typeof changeEmailSchema>;
export type UpdateMeInput = z.infer<typeof updateMeSchema>;
export type SetFeaturedInput = z.infer<typeof setFeaturedSchema>;
export type SendSongInput = z.infer<typeof sendSongSchema>;
export type PushSubscriptionInput = z.infer<typeof pushSubscriptionSchema>;

export const jellyfinConnectSchema = z.object({
  serverUrl: z.string().trim().min(1).max(500),
  username: z.string().trim().min(1).max(128),
  password: z.string().max(256).default(''),
});

/** Pause sharing: for an hour, until tomorrow, until turned back on, or resume (null). */
export const PAUSE_OPTIONS = ['1h', '8h', 'indefinitely'] as const;
export const setSharingSchema = z.object({ pause: z.enum(PAUSE_OPTIONS).nullable() });

export const REPORT_REASONS = ['spam', 'harassment', 'inappropriate', 'impersonation', 'other'] as const;
export type ReportReason = (typeof REPORT_REASONS)[number];
export const REPORT_REASON_LABELS: Record<ReportReason, string> = {
  spam: 'Spam or fake account',
  harassment: 'Harassment or bullying',
  inappropriate: 'Inappropriate profile or picture',
  impersonation: 'Pretending to be someone else',
  other: 'Something else',
};
export const reportSchema = z.object({
  reason: z.enum(REPORT_REASONS),
  note: z.string().trim().max(500).nullish(),
});