export async function getPromos() {
  const res = await fetch('api/promos', {headers: {'Accept': 'application/json'}})
  if (res.status == 200) {
    return await res.json();
  } else {
    throw new Error((await res.json()).errmsg);
  }
}

export async function getUsers() {
  const res = await fetch('api/users', {headers: {'Accept': 'application/json'}})
  if (res.status == 200) {
    return await res.json();
  } else {
    throw new Error((await res.json()).errmsg);
  }
}

export async function getUser(uid) {
  const res = await fetch(`api/users/${uid}`, {headers: {'Accept': 'application/json'}})
  if (res.status == 200) {
    return await res.json();
  } else {
    throw new Error((await res.json()).errmsg);
  }
}

export async function getGrades(uid, survey) {
  const res = await fetch(`api/grades`, {headers: {'Accept': 'application/json'}})
  if (res.status == 200) {
    return await res.json();
  } else {
    throw new Error((await res.json()).errmsg);
  }
}
export async function getUserGrade(uid, survey) {
  const res = await fetch(`api/users/${uid}/surveys/${survey.id}/grades`, {headers: {'Accept': 'application/json'}})
  if (res.status == 200) {
    return await res.json();
  } else {
    throw new Error((await res.json()).errmsg);
  }
}

export async function getUserScore(uid, survey) {
  const res = await fetch(`api/users/${uid}/surveys/${survey.id}/score`, {headers: {'Accept': 'application/json'}})
  if (res.status == 200) {
    return await res.json();
  } else {
    throw new Error((await res.json()).errmsg);
  }
}

export async function getUserNeedingHelp() {
  const res = await fetch(`api/help`, {headers: {'Accept': 'application/json'}})
  if (res.status == 200) {
    return await res.json();
  } else {
    throw new Error((await res.json()).errmsg);
  }
}

export async function getScore(survey) {
  const res = await fetch(survey.kind === "w" ? `api/works/${survey.id}/score` : `api/surveys/${survey.id}/score`, {headers: {'Accept': 'application/json'}})
  if (res.status == 200) {
    return await res.json();
  } else {
    throw new Error((await res.json()).errmsg);
  }
}