import { z } from 'zod';

/** Validate a Workshop item ID (a non-empty run of digits). */
export const itemIdSchema = z
  .string()
  .regex(/^\d+$/, 'Item ID must be a number')
  .min(1);

/** Query params for `GET /search`. */
export const searchQuerySchema = z.object({
  q: z.string().trim().min(1, 'Search query is required'),
  page: z.coerce.number().int().min(1).default(1),
});

export const assetKindSchema = z.enum([
  'pdf',
  'deckFace',
  'deckBack',
  'image',
  'imageSecondary',
]);

export const assetRefSchema = z.object({
  kind: assetKindSchema,
  url: z.string().url(),
  ownerGuid: z.string(),
});

export const extractedObjectSchema = z.object({
  guid: z.string(),
  name: z.string(),
  type: z.string(),
  parentGuid: z.string().optional(),
  childrenGuids: z.array(z.string()),
  refs: z.array(assetRefSchema),
});

export const workshopItemSchema = z.object({
  id: z.string(),
  title: z.string(),
  author: z.string(),
  previewImageUrl: z.string(),
  fileUrl: z.string().optional(),
  description: z.string().optional(),
  tags: z.array(z.string()).optional(),
  timeCreated: z.number().optional(),
  timeUpdated: z.number().optional(),
});

export const searchResultSchema = z.object({
  items: z.array(workshopItemSchema),
  page: z.number(),
  hasMore: z.boolean(),
});

export const traceModeSchema = z.enum(['alpha', 'bw', 'color']);

export const traceFormatSchema = z.enum(['svg', 'shape']);

/** Query params for `GET /trace`. */
export const traceRequestSchema = z.object({
  url: z.string().url('url must be a valid URL'),
  mode: traceModeSchema.default('alpha'),
  threshold: z.coerce.number().int().min(0).max(255).default(128),
  format: traceFormatSchema.default('shape'),
  simplify: z.coerce.number().min(0).optional(),
  maxColors: z.coerce.number().int().min(1).optional(),
  /** Inset (negative) or outset (positive) the traced shape, in pixels. */
  offset: z.coerce.number().optional(),
});