import { api } from './api';

export type ChallengeStatus = 'upcoming' | 'ongoing' | 'expired';

export type ChallengeProgressDto = {
  completed: number;
  target: number;
  remaining: number
  checkedInToday: boolean;
};

export type RankingItemDto = {
  id: string;
  name: string;
  avatar: string | null;
  metric: string;
  badge?: string;
  todayReportedValue?: number;
  todayTargetValue?: number;
};

export enum ChallengeType {
  WATER = 'water',
  EXERCISE = 'exercise',
  DIET = 'diet',
  MOOD = 'mood',
  SLEEP = 'sleep',
  WEIGHT = 'weight',
}



export type ChallengeListItemDto = {
  id: string;
  title: string;
  image: string;
  periodLabel?: string;
  durationLabel: string;
  requirementLabel: string;
  unit?: string;
  status: ChallengeStatus;
  participantsCount: number;
  rankingDescription?: string;
  highlightTitle: string;
  highlightSubtitle: string;
  ctaLabel: string;
  progress?: ChallengeProgressDto;
  isJoined: boolean;
  startAt?: string;
  endAt?: string;
  minimumCheckInDays: number; // 最小打卡天数
  type: ChallengeType;
};

export type ChallengeDetailDto = ChallengeListItemDto & {
  summary?: string;
  rankings: RankingItemDto[];
  userRank?: number;
};

export type ChallengeRankingsDto = {
  total: number;
  page: number;
  pageSize: number;
  items: RankingItemDto[];
};

export async function listChallenges(): Promise<ChallengeListItemDto[]> {
  return api.get<ChallengeListItemDto[]>('/challenges');
}

export async function getChallengeDetail(id: string): Promise<ChallengeDetailDto> {
  return api.get<ChallengeDetailDto>(`/challenges/${encodeURIComponent(id)}`);
}

export async function joinChallenge(id: string): Promise<ChallengeProgressDto> {
  return api.post<ChallengeProgressDto>(`/challenges/${encodeURIComponent(id)}/join`);
}

export async function leaveChallenge(id: string): Promise<boolean> {
  return api.post<boolean>(`/challenges/${encodeURIComponent(id)}/leave`);
}

export async function reportChallengeProgress(id: string, value?: number): Promise<ChallengeProgressDto> {
  const body = value != null ? { value } : undefined;
  return api.post<ChallengeProgressDto>(`/challenges/${encodeURIComponent(id)}/progress`, body);
}

export async function getChallengeRankings(
  id: string,
  params?: { page?: number; pageSize?: number }
): Promise<ChallengeRankingsDto> {
  const searchParams = new URLSearchParams();
  if (params?.page) {
    searchParams.append('page', String(params.page));
  }
  if (params?.pageSize) {
    searchParams.append('pageSize', String(params.pageSize));
  }
  const query = searchParams.toString();
  const url = `/challenges/${encodeURIComponent(id)}/rankings${query ? `?${query}` : ''}`;
  return api.get<ChallengeRankingsDto>(url);
}