export type MemosMemo = { name: string; content: string; visibility: string; creator?: string; createTime?: string; updateTime?: string; tags?: string[]; attachments?: { type?: string }[]; resources?: { type?: string }[] };
export type MemosIdentity = { name: string; username?: string; nickname?: string; displayName?: string; avatarUrl?: string; avatar?: string };
export type MemosSyncRules = { creator?: string | null; tags?: string[]; from?: string | null; to?: string | null; attachmentMode?: "all" | "images" | "none" };
const base = (url: string) => url.replace(/\/+$/, "") + "/api/v1";
async function request(url: string, token: string, init?: RequestInit) {
  const res = await fetch(url, { ...init, headers: { Authorization: `Bearer ${token}`, "Content-Type": "application/json", ...(init?.headers || {}) }, cache: "no-store" });
  if (!res.ok) throw new Error(`Memos API ${res.status}: ${await res.text()}`); return res;
}
export async function createUserWebhook(baseUrl: string, token: string, userName: string, webhook: { url: string; displayName: string; signingSecret: string }) {
  const user = userName.split("/").at(-1); if (!user) throw new Error("Invalid Memos user");
  return (await request(`${base(baseUrl)}/users/${encodeURIComponent(user)}/webhooks`, token, { method: "POST", body: JSON.stringify(webhook) })).json() as Promise<{ name: string }>;
}
export async function deleteUserWebhook(baseUrl: string, token: string, userName: string, webhookName: string) {
  const user = userName.split("/").at(-1), webhook = webhookName.split("/").at(-1); if (!user || !webhook) throw new Error("Invalid Memos webhook");
  await request(`${base(baseUrl)}/users/${encodeURIComponent(user)}/webhooks/${encodeURIComponent(webhook)}`, token, { method: "DELETE" });
}
export async function verifyMemos(baseUrl: string, token: string) { await request(`${base(baseUrl)}/memos?pageSize=1`, token); }
export async function getMemosIdentity(baseUrl: string, token: string) {
  let user: MemosIdentity;
  try { user = await (await request(`${base(baseUrl)}/auth/me`, token)).json() as MemosIdentity; if ((user as any).user) user = (user as any).user as MemosIdentity; }
  catch (error) { if (!(error instanceof Error) || !error.message.startsWith("Memos API 404")) throw error; user = await (await request(`${base(baseUrl)}/auth/status`, token, { method: "POST", body: "{}" })).json() as MemosIdentity; }
  if (!user.name) throw new Error("Memos did not return an account identity");
  return user;
}
export function memoUrl(baseUrl: string, memoName: string) {
  const id = memoName.split("/").at(-1);
  if (!id) return null;
  const path = /^\d+$/.test(id) ? `m/${encodeURIComponent(id)}` : `memos/${encodeURIComponent(id)}`;
  return `${baseUrl.replace(/\/$/, "")}/${path}`;
}
export type MemosPage = { memos: MemosMemo[]; nextPageToken: string };
export async function listMemos(baseUrl: string, token: string, rules: MemosSyncRules = {}, page: { pageToken?: string; pageSize?: number } = {}): Promise<MemosPage> {
  let pageToken = page.pageToken || "";
  const tags = rules.tags?.filter(Boolean) || []; const mode = rules.attachmentMode || "all";
  const quote = (value: string) => JSON.stringify(value); const filters = [rules.creator && `creator == ${quote(rules.creator)}`, `visibility == "PUBLIC"`, ...tags.map((tag) => `tags.exists(t, t == ${quote(tag)})`)].filter(Boolean).join(" && ");
  let useServerFilter = Boolean(filters);
  do { const params = new URLSearchParams({ pageSize: String(Math.max(10, Math.min(100, page.pageSize || 100))) }); if (pageToken) params.set("pageToken", pageToken); if (useServerFilter && filters) params.set("filter", filters); let data: any;
    try { data = await (await request(`${base(baseUrl)}/memos?${params}`, token)).json(); }
    catch (error) { if (!pageToken && useServerFilter && error instanceof Error && error.message.startsWith("Memos API 400")) { useServerFilter = false; continue; } throw error; }
    const memos = (data.memos || []).filter((memo: MemosMemo) => {
    if (memo.visibility !== "PUBLIC") return false;
    if (rules.creator && memo.creator !== rules.creator) return false;
    if (tags.length && !tags.every((tag) => memo.tags?.includes(tag))) return false;
    const created = memo.createTime?.slice(0, 10); if (rules.from && (!created || created < rules.from)) return false; if (rules.to && (!created || created > rules.to)) return false;
    return true;
    }).map((memo: MemosMemo) => {
    if (mode === "all") return memo;
    const onlyImages = <T extends { type?: string }>(items: T[] | undefined) => mode === "none" ? [] : (items || []).filter((item) => item.type?.startsWith("image/"));
    return { ...memo, attachments: onlyImages(memo.attachments), resources: onlyImages(memo.resources) };
    });
    return { memos, nextPageToken: data.nextPageToken || "" };
  } while (true);
}
export async function createMemo(baseUrl: string, token: string, memo: Pick<MemosMemo, "content" | "visibility"> & { attachments?: unknown[]; resources?: unknown[] }) {
  return (await request(`${base(baseUrl)}/memos`, token, { method: "POST", body: JSON.stringify({ state: "NORMAL", ...memo }) })).json() as Promise<MemosMemo>;
}
export async function createAttachment(baseUrl: string, token: string, attachment: { filename: string; content: string; type: string }) {
  return (await request(`${base(baseUrl)}/attachments`, token, { method: "POST", body: JSON.stringify(attachment) })).json() as Promise<{ name: string; filename: string; type: string }>;
}
export async function setMemoAttachments(baseUrl: string, token: string, memoName: string, attachments: unknown[]) {
  const memoId = memoName.split("/").at(-1);
  if (!memoId) throw new Error("Invalid Memos memo name");
  await request(`${base(baseUrl)}/memos/${encodeURIComponent(memoId)}/attachments`, token, { method: "PATCH", body: JSON.stringify({ name: memoName, attachments }) });
}
export async function createResource(baseUrl: string, token: string, resource: { filename: string; content: string; type: string; size: string }) {
  return (await request(`${base(baseUrl)}/resources`, token, { method: "POST", body: JSON.stringify(resource) })).json() as Promise<{ name: string; filename: string; type: string; size: string }>;
}
export async function createRemoteFile(baseUrl: string, token: string, file: { filename: string; content: string; type: string; size: string }) {
  try { return { kind: "attachment" as const, value: await createAttachment(baseUrl, token, file) }; }
  catch (error) {
    if (!(error instanceof Error) || !error.message.startsWith("Memos API 404")) throw error;
    return { kind: "resource" as const, value: await createResource(baseUrl, token, file) };
  }
}