/**
 * M1 课标（Standards）模块 - Zod 验证 schema
 *
 * 所有错误消息使用 i18n 键，由 actions 层通过 translateFieldErrors() 翻译。
 */
import { z } from "zod";

export const createStandardSchema = z.object({
  code: z.string().min(1, "error.codeRequired").max(100, "error.codeTooLong"),
  title: z.string().min(1, "error.titleRequired").max(255, "error.titleTooLong"),
  description: z.string().max(2000, "error.descriptionTooLong").optional(),
  level: z.enum(["national", "curriculum", "custom"]),
  parentId: z.string().optional(),
  subjectId: z.string().optional(),
  gradeId: z.string().optional(),
  stage: z.enum(["primary", "junior_high", "senior_high"]).optional(),
  sortOrder: z.number().int().min(0).default(0),
});

export const updateStandardSchema = z.object({
  id: z.string().min(1, "error.idRequired"),
  title: z.string().min(1, "error.titleRequired").max(255, "error.titleTooLong").optional(),
  description: z.string().max(2000, "error.descriptionTooLong").optional(),
  parentId: z.string().optional(),
  sortOrder: z.number().int().min(0).optional(),
  isActive: z.boolean().optional(),
});

export const getStandardsParamsSchema = z.object({
  level: z.enum(["national", "curriculum", "custom"]).optional(),
  parentId: z.string().optional(),
  subjectId: z.string().optional(),
  gradeId: z.string().optional(),
  stage: z.enum(["primary", "junior_high", "senior_high"]).optional(),
  includeInactive: z.boolean().optional(),
  asTree: z.boolean().optional(),
});

export const importStandardsSchema = z.object({
  standards: z
    .array(
      z.object({
        code: z.string().min(1, "error.codeRequired"),
        title: z.string().min(1, "error.titleRequired"),
        description: z.string().optional(),
        level: z.enum(["national", "curriculum", "custom"]),
        parentId: z.string().optional(),
        subjectId: z.string().optional(),
        gradeId: z.string().optional(),
        stage: z.enum(["primary", "junior_high", "senior_high"]).optional(),
        sortOrder: z.number().int().min(0).optional(),
      }),
    )
    .min(1, "error.atLeastOneStandard"),
  conflictStrategy: z.enum(["skip", "update", "fail"]).default("skip"),
});

export const linkPlanToStandardSchema = z.object({
  planId: z.string().min(1, "error.planIdRequired"),
  standardId: z.string().min(1, "error.standardIdRequired"),
  relationType: z.enum(["primary", "related"]).default("primary"),
});

export type CreateStandardInput = z.infer<typeof createStandardSchema>;
export type UpdateStandardInput = z.infer<typeof updateStandardSchema>;
export type GetStandardsParamsInput = z.infer<typeof getStandardsParamsSchema>;
export type ImportStandardsInputZod = z.infer<typeof importStandardsSchema>;
export type LinkPlanToStandardInput = z.infer<typeof linkPlanToStandardSchema>;