import type { AuthTokens, LoginRequest, RefreshTokenRequest, RegisterRequest } from "@oj2/contract"
import type {
  ClassActivity,
  MarkAchievementsRead,
  ProblemAuthor,
  ProblemList,
  Quote,
  WebsiteConfig,
} from "@oj2/contract"
import api from "utils/api"
import { getRefreshToken, saveTokens } from "utils/auth"
import { contractDeferred } from "utils/contract"
import { toProblemRow } from "utils/transforms"
import type { PendingAchievement, Profile, Tag } from "utils/types"

export async function login(data: { username: string; password: string }) {
  saveTokens(await api.post<AuthTokens>("auth/login", data satisfies LoginRequest))
}

export function signup(data: { username: string; email: string; password: string }) {
  return api.post("users", data satisfies RegisterRequest)
}

/** 吊销服务端那张会话。本地的 token 由调用方清（user store 的 clearProfile） */
export async function logout() {
  const refreshToken = getRefreshToken()
  if (refreshToken) await api.post("auth/logout", { refreshToken } satisfies RefreshTokenRequest)
}

export async function getProfile(username: string = ""): Promise<Profile | null> {
  const endpoint = username ? `profiles/${encodeURIComponent(username)}` : "me"
  const response = await api.get<unknown>(endpoint)
  if (response === null) return null
  // 形状与契约一致，不再逐字段搬运。走契约闸门而不是裸 parse()：原来这里是
  // `userProfileSchema.parse(response) as Profile`，`as` 把校验结果又断言回本地
  // 类型（Profile 把 user 收窄成 SessionUser、acmProblemsStatus 收窄成具体形状），
  // 形状对不上时页面白屏。现在记一条分歧日志后放行原始数据。
  // 用 deferred 版：启动就要拉 /me，同步校验会把 zod 整个打进首屏包
  return contractDeferred(
    "GET /profiles/:username",
    () => import("./profileSchema").then((m) => m.userProfileSchema),
    response,
  )
}

export function getProblemTagList() {
  return api.get<Tag[]>("problem-tags")
}

export function getHitokoto() {
  return api.get<Quote>("quotes/random")
}

export function getClassUsernames(classroom: string) {
  return api.get<string[]>(`classes/${encodeURIComponent(classroom)}/usernames`)
}

// 下面这个是启动就要调的（config store），所以放在 shared 而不是
// oj/api.ts：oj/api.ts 同步 import 了题目详情、提交详情两个 schema（它们的契约闸门必须
// 同步，submissionDetailSchema 里有 `.catch()`，放行原文和解析结果不等价），入口一旦
// 引到它，zod 整个就进了首屏包。
export function getWebsiteConfig() {
  return api.get<WebsiteConfig>("site")
}

export async function getProblemList(
  offset = 0,
  limit = 10,
  searchParams: Record<string, unknown> = {},
) {
  const res = await api.get<ProblemList>("problems", {
    params: { paging: true, offset, limit, ...searchParams },
  })
  return {
    results: res.results.map(toProblemRow),
    total: res.total,
  }
}

export function getAuthors(all = false) {
  return api.get<ProblemAuthor[]>("problem-authors", {
    params: { all: all ? "1" : "0" },
  })
}

export function getClassActivity() {
  return api.get<ClassActivity>("me/class-activity")
}

export function getPendingAchievements() {
  return api.get<PendingAchievement[]>("achievements/pending")
}

export function markAchievementsRead(ids: number[]) {
  return api.post("achievements/pending/read", { ids } satisfies MarkAchievementsRead)
}