import { z } from 'zod';

export const sectionSchema = z.any().superRefine((x, ctx) => {
    const schemas = [z.object({ "type": z.literal("page"), "align": z.enum(["top","center","bottom"]).describe("Vertical alignment of page content").default("top"), "startY": z.number().gte(0).lte(50).describe("Y position in cm (overrides align)").optional(), "content": z.array(z.any()).min(1).max(100).describe("Page content elements") }).strict().describe("Styled single page with custom positioning"), z.object({ "type": z.literal("flow"), "newPage": z.boolean().describe("Start this section on a new page (default: true)").default(true), "content": z.array(z.any()).min(1).max(200).describe("Flow content elements") }).strict().describe("Flowing content across multiple pages")];
    const errors = schemas.reduce<z.ZodError[]>(
      (errors, schema) =>
        ((result) =>
          result.error ? [...errors, result.error] : errors)(
          schema.safeParse(x),
        ),
      [],
    );
    if (schemas.length - errors.length !== 1) {
      ctx.addIssue({
        path: ctx.path,
        code: "invalid_union",
        unionErrors: errors,
        message: "Invalid input: Should pass single schema",
      });
    }
  }).describe("JSON schema for section configuration (extracted from document schema)")