import { AstroError } from "astro/errors";
import { z } from "astro/zod";

const configSchema = z.object({
  /**
   * The owner of the GitHub repository.
   *
   * @default "trueberryless-org"
   */
  githubOwner: z.string().default("trueberryless-org"),

  /**
   * The name of the plugin.
   */
  pluginName: z.string(),

  /**
   * The path to the showcase page.
   *
   * @default "./docs/astro.config.ts"
   */
  showcaseFilepath: z.string().default("./docs/astro.config.ts"),

  /**
   * The props for the showcase page.
   */
  showcaseProps: z
    .object({
      /**
       * A list of showcase entries to be displayed in the showcase page.
       *
       * @default []
       * @see {@link ShowcaseImageProps}
       */
      entries: z
        .array(
          z.object({
            /**
             * The name of the project which uses your plugin.
             *
             * @see {@link ShowcaseImageCardProps.title}
             */
            title: z.string(),

            /**
             * The description of the project which uses your plugin.
             *
             * @see {@link ShowcaseImageCardProps.description}
             */
            description: z.string().optional(),

            /**
             * The thumbnail of the project which uses your plugin.
             *
             * @see {@link ShowcaseImageCardProps.thumbnail}
             */
            thumbnail: z.string(),

            /**
             * The URL of the project which uses your plugin.
             *
             * @see {@link ShowcaseImageCardProps.href}
             */
            href: z.string(),
          })
        )
        .default([]),
    })
    .prefault({}),
});

export function validateConfig(
  userConfig: unknown
): StarlightPluginsDocsComponentsConfig {
  const config = configSchema.safeParse(userConfig);

  if (!config.success) {
    const errors = config.error.flatten();

    throw new AstroError(
      `Invalid @trueberryless-org/starlight-plugins-docs-components configuration:

${errors.formErrors.map((formError) => ` - ${formError}`).join("\n")}
${Object.entries(errors.fieldErrors)
  .map(
    ([fieldName, fieldErrors]) => ` - ${fieldName}: ${fieldErrors.join(" - ")}`
  )
  .join("\n")}
  `,
      `See the error report above for more informations.\n\nIf you believe this is a bug, please file an issue at https://github.com/trueberryless-org/starlight-plugins-docs-components/issues/new`
    );
  }

  return config.data;
}

export type StarlightPluginsDocsComponentsUserConfig = z.input<
  typeof configSchema
>;
export type StarlightPluginsDocsComponentsConfig = z.output<
  typeof configSchema
>;