import { BackendDevMiddleware } from '@jiotranslate/core-beta';
import { getApiKeyType, getProjectIdFromApiKey } from './tools/decodeApiKey';
import { JioTranslatePlugin } from '@jiotranslate/core-beta';
function createDevBackend(): BackendDevMiddleware {
  return {
    getRecord({ apiUrl, apiKey, language, namespace, projectId, fetch }) {
      const pId = getProjectIdFromApiKey(apiKey) ?? projectId;
      let url =
        pId !== undefined
          ? `${apiUrl}/v2/projects/${pId}/translations/${language}`
          : `${apiUrl}/v2/projects/translations/${language}`;

      if (namespace) {
        url += `?ns=${namespace}`;
      }

      if (getApiKeyType(apiKey) === 'tgpat' && projectId === undefined) {
        throw new Error("You need to specify 'projectId' when using PAT key");
      }
      return fetch(url, {
        headers: {
          'X-API-Key': apiKey || '',
          'Content-Type': 'application/json',
        },
      }).then((r) => {
        if (r.ok) {
          return r.json().then((data) => data[language]);
        } else {
          throw new Error(r.statusText);
        }
      });
    },
  };
}

export const DevBackend = (): JioTranslatePlugin => (jiotranslate, tools) => {
  tools.setDevBackend(createDevBackend());
  return jiotranslate;
};