export type InstructorSubmissionCommitFile = {
  path: string;
  status: string;
  patch: string;
  originalRef?: string | null;
  modifiedRef?: string | null;
};

export type InstructorSubmissionCommit = {
  hash: string;
  shortHash: string;
  message: string;
  author: string;
  authorEmail: string;
  date: string | null;
  files: InstructorSubmissionCommitFile[];
};

export type InstructorSubmissionItem = {
  id: string;
  status: 'NOT_INSTALLED' | 'PENDING' | 'SUBMITTED';
  submitted: boolean;
  submittedAt: string | null;
  commitCount: number;
  score: number;
  course: {
    id: string;
    title: string;
    slug: string;
  };
  week: {
    id: string;
    week: number;
    title: string;
    isTeamProject: boolean;
  };
  module: {
    id: string;
    name: string;
    folderName: string;
    sortOrder: number;
    sourceType?: 'CUSTOM' | 'GIT';
  };
  student: {
    id: string;
    name: string;
    email: string;
    group: string;
  };
  team?: {
    id: string;
    name: string;
    members: Array<{
      id: string;
      name: string;
      email: string;
      commitCount: number;
      lastCommittedAt: string | null;
    }>;
  } | null;
  repository: {
    id: string;
    owner: string;
    name: string;
    url: string;
  } | null;
  commits: InstructorSubmissionCommit[];
  finalFiles: InstructorSubmissionCommitFile[];
};

export type InstructorSubmissionsResponse = {
  organization: {
    id?: string;
    name: string;
  } | null;
  summary: {
    totalItems: number;
    submittedItems: number;
    pendingItems: number;
    notInstalledItems: number;
    totalCommits: number;
  };
  courses: Array<{
    id: string;
    title: string;
    slug: string;
    weeks: Array<{
      id: string;
      week: number;
      title: string;
      isTeamProject: boolean;
      modules: Array<{
        id: string;
        name: string;
        folderName: string;
        sortOrder: number;
      }>;
    }>;
  }>;
  students: Array<{
    id: string;
    name: string;
    email: string;
    group: string;
  }>;
  items: InstructorSubmissionItem[];
  teamItems: InstructorSubmissionItem[];
};

const LMS_API_BASE_URL = (import.meta.env.VITE_API_BASE_URL ?? 'https://workspace.autonomystudio.net/lms-api/api').replace(/\/+$/, '');

export async function listInstructorSubmissions(accessToken: string): Promise<InstructorSubmissionsResponse> {
  const response = await fetch(`${LMS_API_BASE_URL}/instructor/submissions`, {
    headers: {
      Authorization: `Bearer ${accessToken}`,
    },
  });

  if (!response.ok) {
    throw new Error(`제출 현황을 불러오지 못했습니다. (${response.status})`);
  }

  return response.json() as Promise<InstructorSubmissionsResponse>;
}

export async function getInstructorSubmissionFile(
  accessToken: string,
  input: {
    owner: string;
    repoName: string;
    path: string;
    baseRef?: string | null;
    headRef?: string | null;
  },
): Promise<{
  original: string;
  modified: string;
  originalAvailable: boolean;
  modifiedAvailable: boolean;
}> {
  const query = new URLSearchParams({
    owner: input.owner,
    repo: input.repoName,
    path: input.path,
  });
  if (input.baseRef) query.set('baseRef', input.baseRef);
  if (input.headRef) query.set('headRef', input.headRef);

  const response = await fetch(`${LMS_API_BASE_URL}/instructor/submissions/file?${query.toString()}`, {
    headers: {
      Authorization: `Bearer ${accessToken}`,
    },
  });
  if (!response.ok) {
    throw new Error(`파일 내용을 불러오지 못했습니다. (${response.status})`);
  }
  return response.json() as Promise<{
    original: string;
    modified: string;
    originalAvailable: boolean;
    modifiedAvailable: boolean;
  }>;
}

export async function saveInstructorSubmissionScore(
  accessToken: string,
  input: { studentId: string; weekId: string; score: number },
): Promise<{ score: number }> {
  const response = await fetch(`${LMS_API_BASE_URL}/instructor/submissions/score`, {
    method: 'PUT',
    headers: {
      Authorization: `Bearer ${accessToken}`,
      'Content-Type': 'application/json',
    },
    body: JSON.stringify(input),
  });

  if (!response.ok) {
    throw new Error(`점수를 저장하지 못했습니다. (${response.status})`);
  }

  return response.json() as Promise<{ score: number }>;
}