import type { PersonaProjectSubscription } from './types';

type ProjectsApiConfig = {
  baseUrl: string;
  apiKey: string;
};

class ProjectsApi {
  private readonly baseUrl: string;
  private readonly apiKey: string;

  constructor(config: ProjectsApiConfig) {
    this.baseUrl = config.baseUrl.replace(/\/$/, '');
    this.apiKey = config.apiKey;
  }

  private async request<T>(path: string, init?: RequestInit): Promise<T> {
    const response = await fetch(`${this.baseUrl}${path}`, {
      ...init,
      headers: {
        'Content-Type': 'application/json',
        'x-persona-apikey': this.apiKey,
        ...(init?.headers ?? {}),
      },
    });

    if (!response.ok) {
      throw new Error(await response.text());
    }

    return (await response.json()) as T;
  }

  async getSubscription(projectId: string): Promise<PersonaProjectSubscription> {
    return this.request<PersonaProjectSubscription>(`/projects/${projectId}/subscription`);
  }

  async changeSubscriptionPlan(
    projectId: string,
    toPlanType: PersonaProjectSubscription['planType'],
  ): Promise<PersonaProjectSubscription> {
    return this.request<PersonaProjectSubscription>(`/projects/${projectId}/subscription/actions/change-plan`, {
      method: 'POST',
      body: JSON.stringify({ toPlanType }),
    });
  }

  async addSubscriptionCredits(projectId: string, credits: number): Promise<PersonaProjectSubscription> {
    return this.request<PersonaProjectSubscription>(`/projects/${projectId}/subscription/actions/add-credits`, {
      method: 'POST',
      body: JSON.stringify({ credits }),
    });
  }
}

export { ProjectsApi };
export type { ProjectsApiConfig };