import { z } from 'zod';
import { createBuiltInParserDefinition } from '../../internals/createBuiltInParserDefinition.js';
import { applyTo } from '../../shared/definition.js';

export const changeCaseParserName = 'change-case';

const toCaseSchema = z.union(
  [
    z.literal('camelCase'),
    z.literal('capitalCase'),
    z.literal('constantCase'),
    z.literal('kebabCase'),
    z.literal('noCase'),
    z.literal('pascalCase'),
    z.literal('pascalSnakeCase'),
    z.literal('pathCase'),
    z.literal('sentenceCase'),
    z.literal('snakeCase'),
    z.literal('trainCase'),
  ],
  {
    errorMap: (_, _ctx) => ({
      message:
        'toCase must be one of the following: "camelCase", "capitalCase", "constantCase", "kebabCase", "noCase", "pascalCase", "pascalSnakeCase", "pathCase", "sentenceCase", "snakeCase", "trainCase"',
    }),
  },
);

export const changeCaseParserOptionsSchema = z
  .object({
    change: z
      .union([z.literal('names'), z.literal('modes')], {
        errorMap: () => ({
          message: 'change must be either "names" or "modes"',
        }),
      })
      .optional(),
    toCase: toCaseSchema,
    applyTo,
  })
  .strict();

export const changeCaseParserDefinition = createBuiltInParserDefinition({
  name: changeCaseParserName,
  kind: 'utility',
  hasOptionalOptions: false,
  optionsSchema: changeCaseParserOptionsSchema,
  hasOptionalOutput: true,
  outputTypes: undefined,
  inTypes: ['SDTF', 'SDTF Engine'],
  outType: 'SDTF Engine',
});

export type ChangeCaseParserDefinition = typeof changeCaseParserDefinition;
export type ChangeCaseParserOptions = z.infer<ChangeCaseParserDefinition['optionsSchema']>;