cube/apps/music/frontend/src/lib/api.js

// 薄薄一层 fetch 封装。错误统一抛 Error(message)。

async function jsonOrThrow(res) {
  if (!res.ok) {
    const text = await res.text().catch(() => '')
    throw new Error(text || `${res.status} ${res.statusText}`)
  }
  return res.json()
}

export function listPieces() {
  return fetch('/api/pieces').then(jsonOrThrow)
}

export function getPiece(id) {
  return fetch(`/api/pieces/${id}`).then(jsonOrThrow)
}

export function createPiece(body) {
  return fetch('/api/pieces', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(body),
  }).then(jsonOrThrow)
}

export function patchPiece(id, body) {
  return fetch(`/api/pieces/${id}`, {
    method: 'PATCH',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(body),
  }).then(jsonOrThrow)
}

export function deletePiece(id) {
  return fetch(`/api/pieces/${id}`, { method: 'DELETE' }).then(jsonOrThrow)
}

export function recordPlay(id) {
  return fetch(`/api/pieces/${id}/play`, { method: 'POST' }).then(jsonOrThrow)
}

// `role`: null | 'chord' | 'numbered' | 'staff'
export function uploadAttachments(pieceId, files, role) {
  const fd = new FormData()
  for (const f of files) fd.append('files', f, f.name)
  const url = role
    ? `/api/pieces/${pieceId}/attachments?role=${encodeURIComponent(role)}`
    : `/api/pieces/${pieceId}/attachments`
  return fetch(url, { method: 'POST', body: fd }).then(jsonOrThrow)
}

export function deleteAttachment(id) {
  return fetch(`/api/attachments/${id}`, { method: 'DELETE' }).then(jsonOrThrow)
}

export function attachmentUrl(id) {
  return `/api/attachments/${id}`
}

export function chordFetch(pieceId) {
  return fetch(`/api/pieces/${pieceId}/chord/fetch`, { method: 'POST' }).then(jsonOrThrow)
}

export function chordStatus(pieceId) {
  return fetch(`/api/pieces/${pieceId}/chord/status`).then(jsonOrThrow)
}