// SPDX-FileCopyrightText: 2026 Kerstin Humm <kerstin@erictapen.name>
//
// SPDX-License-Identifier: AGPL-3.0-or-later

import { isJsonArray, isUrl, JsonValue, Rule } from "../types.js";

export default {
  name: "to attribute",
  validate: (self) => {
    if (isJsonArray(self["to"])) {
      return {
        annotations: [],
        object: {
          "to": {
            annotations: [],
            array: self["to"].map((url: JsonValue) =>
              (typeof url === "string")
                ? (isUrl(url)
                  ? {
                    kind: "Correct",
                    text: "Correct URL",
                  }
                  : {
                    kind: "Violation",
                    text: "Not a valid URL",
                  })
                : {
                  kind: "Violation",
                  text: "url is not a string",
                }
            ),
          },
        },
      };
    } else {
      return {
        annotations: [],
        object: {
          "to": {
            kind: "Violation",
            id: "InvalidArray",
            text: `The to field ${self["to"]} is not an array`,
          },
        },
      };
    }
  },
  tests: [{
    value: { "to": ["https://www.w3.org/ns/activitystreams#Public"] },
    result: {
      annotations: [],
      object: { "to": { annotations: [], array: ["Correct"] } },
    },
  }],
} satisfies Rule;