import { API_BASE } from "@/lib/config"
import type {
  Account, CreateAccountInput, Template, CreateTemplateInput,
  Domain, CreateDomainInput, ChangesetResponse, ApplyRequest,
} from "./types"

async function req<T>(path: string, init?: RequestInit): Promise<T> {
  const res = await fetch(`${API_BASE}${path}`, {
    headers: { "Content-Type": "application/json" },
    method: "GET",
    ...init,
  })
  if (!res.ok) {
    let msg = `HTTP ${res.status}`
    try { const b = await res.json(); if (b?.error) msg = String(b.error) } catch { /* ignore */ }
    throw new Error(msg)
  }
  if (res.status === 204) return undefined as T
  return (await res.json()) as T
}

export const api = {
  listAccounts: () => req<Account[]>("/accounts"),
  createAccount: (input: CreateAccountInput) =>
    req<Account>("/accounts", { method: "POST", body: JSON.stringify(input) }),
  deleteAccount: (id: string) => req<void>(`/accounts/${id}`, { method: "DELETE" }),

  listTemplates: () => req<Template[]>("/templates"),
  createTemplate: (input: CreateTemplateInput) =>
    req<Template>("/templates", { method: "POST", body: JSON.stringify(input) }),
  updateTemplate: (id: string, input: CreateTemplateInput) =>
    req<Template>(`/templates/${id}`, { method: "PUT", body: JSON.stringify(input) }),
  deleteTemplate: (id: string) => req<void>(`/templates/${id}`, { method: "DELETE" }),

  listDomains: () => req<Domain[]>("/domains"),
  createDomain: (input: CreateDomainInput) =>
    req<Domain>("/domains", { method: "POST", body: JSON.stringify(input) }),
  deleteDomain: (id: string) => req<void>(`/domains/${id}`, { method: "DELETE" }),
  importZones: (accountId: string) =>
    req<Domain[]>(`/accounts/${accountId}/import`, { method: "POST" }),
  setDomainTemplate: (id: string, templateId: string | null) =>
    req<Domain>(`/domains/${id}`, { method: "PATCH", body: JSON.stringify({ templateId }) }),

  checkDomain: (id: string) => req<ChangesetResponse>(`/domains/${id}/check`),
  applyDomain: (id: string, body: ApplyRequest) =>
    req<ChangesetResponse>(`/domains/${id}/apply`, { method: "POST", body: JSON.stringify(body) }),
}