import type { ListCustomWorldWorksResponse } from '../../packages/shared/src/contracts/customWorldAgent';
import type {
  BasicOkResult,
  CustomWorldGalleryDetailResponse,
  CustomWorldGalleryResponse,
  CustomWorldLibraryEntry,
  CustomWorldLibraryMutationResponse,
  CustomWorldLibraryResponse,
  PlatformBrowseHistoryBatchSyncRequest,
  PlatformBrowseHistoryEntry,
  PlatformBrowseHistoryResponse,
  PlatformBrowseHistoryWriteEntry,
  ProfileDashboardSummary,
  ProfileSaveArchiveListResponse,
  ProfileSaveArchiveResumeResponse,
  ProfileSaveArchiveSummary,
  ProfilePlayStatsResponse,
  ProfileWalletLedgerResponse,
  RuntimeSettings,
} from '../../packages/shared/src/contracts/runtime';
import type { SavedGameSnapshotInput } from '../persistence/gameSaveStorage';
import { rehydrateSavedSnapshot } from '../persistence/runtimeSnapshot';
import type { HydratedSavedGameSnapshot } from '../persistence/runtimeSnapshotTypes';
import type { CustomWorldProfile } from '../types';
import { type ApiRetryOptions, requestJson } from './apiClient';

const RUNTIME_API_BASE = '/api/runtime';
const RUNTIME_READ_RETRY: ApiRetryOptions = {
  maxRetries: 1,
  baseDelayMs: 180,
  maxDelayMs: 480,
};
const RUNTIME_WRITE_RETRY: ApiRetryOptions = {
  maxRetries: 1,
  baseDelayMs: 240,
  maxDelayMs: 640,
  retryUnsafeMethods: true,
};

export type RuntimeRequestOptions = {
  signal?: AbortSignal;
  retry?: ApiRetryOptions;
  skipAuth?: boolean;
  skipRefresh?: boolean;
};

function requestRuntimeJson<T>(
  path: string,
  init: RequestInit,
  fallbackMessage: string,
  options: RuntimeRequestOptions = {},
) {
  const method = (init.method ?? 'GET').toUpperCase();
  const retry =
    options.retry ??
    (method === 'GET' ? RUNTIME_READ_RETRY : RUNTIME_WRITE_RETRY);

  return requestJson<T>(
    `${RUNTIME_API_BASE}${path}`,
    {
      ...init,
      signal: options.signal,
    },
    fallbackMessage,
    {
      retry,
      skipAuth: options.skipAuth,
      skipRefresh: options.skipRefresh,
    },
  );
}

function requestPublicRuntimeJson<T>(
  path: string,
  init: RequestInit,
  fallbackMessage: string,
  options: RuntimeRequestOptions = {},
) {
  return requestRuntimeJson<T>(path, init, fallbackMessage, {
    ...options,
    skipAuth: true,
    skipRefresh: true,
  });
}

export async function getSaveSnapshot(options: RuntimeRequestOptions = {}) {
  const snapshot = await requestRuntimeJson<HydratedSavedGameSnapshot | null>(
    '/save/snapshot',
    { method: 'GET' },
    '读取存档失败',
    options,
  );

  return snapshot ? rehydrateSavedSnapshot(snapshot) : null;
}

export async function putSaveSnapshot(
  snapshot: SavedGameSnapshotInput,
  options: RuntimeRequestOptions = {},
) {
  const savedSnapshot = await requestRuntimeJson<HydratedSavedGameSnapshot>(
    '/save/snapshot',
    {
      method: 'PUT',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(snapshot),
    },
    '保存存档失败',
    options,
  );

  return rehydrateSavedSnapshot(savedSnapshot);
}

export async function deleteSaveSnapshot(options: RuntimeRequestOptions = {}) {
  return requestRuntimeJson<BasicOkResult>(
    '/save/snapshot',
    { method: 'DELETE' },
    '删除存档失败',
    options,
  );
}

export async function getSettings(options: RuntimeRequestOptions = {}) {
  return requestRuntimeJson<RuntimeSettings>(
    '/settings',
    { method: 'GET' },
    '读取设置失败',
    options,
  );
}

export async function getProfileDashboard(options: RuntimeRequestOptions = {}) {
  return requestRuntimeJson<ProfileDashboardSummary>(
    '/profile/dashboard',
    { method: 'GET' },
    '读取个人看板失败',
    options,
  );
}

export async function getProfileWalletLedger(
  options: RuntimeRequestOptions = {},
) {
  return requestRuntimeJson<ProfileWalletLedgerResponse>(
    '/profile/wallet-ledger',
    { method: 'GET' },
    '读取资产流水失败',
    options,
  );
}

export async function getProfilePlayStats(options: RuntimeRequestOptions = {}) {
  return requestRuntimeJson<ProfilePlayStatsResponse>(
    '/profile/play-stats',
    { method: 'GET' },
    '读取游玩统计失败',
    options,
  );
}

export async function listProfileSaveArchives(
  options: RuntimeRequestOptions = {},
) {
  const response = await requestRuntimeJson<ProfileSaveArchiveListResponse>(
    '/profile/save-archives',
    { method: 'GET' },
    '读取存档列表失败',
    options,
  );

  return Array.isArray(response?.entries) ? response.entries : [];
}

export async function resumeProfileSaveArchive(
  worldKey: string,
  options: RuntimeRequestOptions = {},
) {
  const response = await requestRuntimeJson<
    ProfileSaveArchiveResumeResponse
  >(
    `/profile/save-archives/${encodeURIComponent(worldKey)}`,
    { method: 'POST' },
    '恢复存档失败',
    options,
  );

  return {
    entry: response.entry,
    snapshot: rehydrateSavedSnapshot(
      response.snapshot as HydratedSavedGameSnapshot,
    ),
  };
}

export async function putSettings(
  settings: RuntimeSettings,
  options: RuntimeRequestOptions = {},
) {
  return requestRuntimeJson<RuntimeSettings>(
    '/settings',
    {
      method: 'PUT',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(settings),
    },
    '保存设置失败',
    options,
  );
}

export async function listCustomWorldLibrary(
  options: RuntimeRequestOptions = {},
) {
  const response = await requestRuntimeJson<
    CustomWorldLibraryResponse<CustomWorldProfile>
  >(
    '/custom-world-library',
    { method: 'GET' },
    '读取自定义世界库失败',
    options,
  );

  return Array.isArray(response?.entries) ? response.entries : [];
}

export async function listCustomWorldWorks(
  options: RuntimeRequestOptions = {},
) {
  const response = await requestRuntimeJson<ListCustomWorldWorksResponse>(
    '/custom-world/works',
    { method: 'GET' },
    '读取创作作品列表失败',
    options,
  );

  return Array.isArray(response?.items) ? response.items : [];
}

export async function upsertCustomWorldProfile(
  profile: CustomWorldProfile,
  options: RuntimeRequestOptions = {},
) {
  const response = await requestRuntimeJson<
    CustomWorldLibraryMutationResponse<CustomWorldProfile>
  >(
    `/custom-world-library/${encodeURIComponent(profile.id)}`,
    {
      method: 'PUT',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        profile,
      }),
    },
    '保存自定义世界失败',
    options,
  );

  return {
    entry: response.entry,
    entries: Array.isArray(response?.entries) ? response.entries : [],
  };
}

export async function deleteCustomWorldProfile(
  profileId: string,
  options: RuntimeRequestOptions = {},
) {
  const response = await requestRuntimeJson<
    CustomWorldLibraryResponse<CustomWorldProfile>
  >(
    `/custom-world-library/${encodeURIComponent(profileId)}`,
    { method: 'DELETE' },
    '删除自定义世界失败',
    options,
  );

  return Array.isArray(response?.entries) ? response.entries : [];
}

export async function publishCustomWorldProfile(
  profileId: string,
  options: RuntimeRequestOptions = {},
) {
  const response = await requestRuntimeJson<
    CustomWorldLibraryMutationResponse<CustomWorldProfile>
  >(
    `/custom-world-library/${encodeURIComponent(profileId)}/publish`,
    { method: 'POST' },
    '发布自定义世界失败',
    options,
  );

  return {
    entry: response.entry,
    entries: Array.isArray(response?.entries) ? response.entries : [],
  };
}

export async function unpublishCustomWorldProfile(
  profileId: string,
  options: RuntimeRequestOptions = {},
) {
  const response = await requestRuntimeJson<
    CustomWorldLibraryMutationResponse<CustomWorldProfile>
  >(
    `/custom-world-library/${encodeURIComponent(profileId)}/unpublish`,
    { method: 'POST' },
    '下架自定义世界失败',
    options,
  );

  return {
    entry: response.entry,
    entries: Array.isArray(response?.entries) ? response.entries : [],
  };
}

export async function listCustomWorldGallery(
  options: RuntimeRequestOptions = {},
) {
  const response = await requestPublicRuntimeJson<CustomWorldGalleryResponse>(
    '/custom-world-gallery',
    { method: 'GET' },
    '读取作品广场失败',
    options,
  );

  return Array.isArray(response?.entries) ? response.entries : [];
}

export async function getCustomWorldGalleryDetail(
  ownerUserId: string,
  profileId: string,
  options: RuntimeRequestOptions = {},
) {
  const response = await requestPublicRuntimeJson<
    CustomWorldGalleryDetailResponse<CustomWorldProfile>
  >(
    `/custom-world-gallery/${encodeURIComponent(ownerUserId)}/${encodeURIComponent(profileId)}`,
    { method: 'GET' },
    '读取作品详情失败',
    options,
  );

  return response.entry;
}

export async function listProfileBrowseHistory(
  options: RuntimeRequestOptions = {},
) {
  const response = await requestRuntimeJson<PlatformBrowseHistoryResponse>(
    '/profile/browse-history',
    { method: 'GET' },
    '读取浏览历史失败',
    options,
  );

  return Array.isArray(response?.entries) ? response.entries : [];
}

export async function upsertProfileBrowseHistory(
  entry: PlatformBrowseHistoryWriteEntry,
  options: RuntimeRequestOptions = {},
) {
  const response = await requestRuntimeJson<PlatformBrowseHistoryResponse>(
    '/profile/browse-history',
    {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(entry),
    },
    '写入浏览历史失败',
    options,
  );

  return Array.isArray(response?.entries) ? response.entries : [];
}

export async function syncProfileBrowseHistory(
  entries: PlatformBrowseHistoryWriteEntry[],
  options: RuntimeRequestOptions = {},
) {
  const response = await requestRuntimeJson<PlatformBrowseHistoryResponse>(
    '/profile/browse-history',
    {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        entries,
      } satisfies PlatformBrowseHistoryBatchSyncRequest),
    },
    '同步浏览历史失败',
    options,
  );

  return Array.isArray(response?.entries) ? response.entries : [];
}

export async function clearProfileBrowseHistory(
  options: RuntimeRequestOptions = {},
) {
  const response = await requestRuntimeJson<PlatformBrowseHistoryResponse>(
    '/profile/browse-history',
    { method: 'DELETE' },
    '清空浏览历史失败',
    options,
  );

  return Array.isArray(response?.entries) ? response.entries : [];
}

export const runtimeStorageClient = {
  getSaveSnapshot,
  putSaveSnapshot,
  deleteSaveSnapshot,
  getSettings,
  putSettings,
  getProfileDashboard,
  getProfileWalletLedger,
  getProfilePlayStats,
  listProfileSaveArchives,
  resumeProfileSaveArchive,
  listCustomWorldLibrary,
  listCustomWorldWorks,
  upsertCustomWorldProfile,
  deleteCustomWorldProfile,
  publishCustomWorldProfile,
  unpublishCustomWorldProfile,
  listCustomWorldGallery,
  getCustomWorldGalleryDetail,
  listProfileBrowseHistory,
  upsertProfileBrowseHistory,
  syncProfileBrowseHistory,
  clearProfileBrowseHistory,
};

export type { CustomWorldLibraryEntry };
export type { PlatformBrowseHistoryEntry };
export type { ProfileSaveArchiveSummary };