// 后端取数：全部走 /api/*（dev 由 vite 代理到 uvicorn，线上同源）。
// 失败不抛飞页面，返回空集，让 UI 显示「暂无数据」。

async function getJSON(url) {
  const r = await fetch(url)
  if (!r.ok) throw new Error(`${r.status} ${url}`)
  return r.json()
}

function qs(params) {
  const p = new URLSearchParams()
  for (const [k, v] of Object.entries(params)) {
    if (v !== undefined && v !== null && v !== '') p.set(k, v)
  }
  const s = p.toString()
  return s ? `?${s}` : ''
}

export async function fetchRuns() {
  try { return (await getJSON('/api/runs')).runs || [] } catch { return [] }
}

export async function fetchMethods(table) {
  try { return (await getJSON(`/api/methods${qs({ table })}`)).methods || [] } catch { return [] }
}

const EMPTY = { total: 0, page: 1, size: 30, items: [] }

export async function fetchQueries({ method, run_id, page, size } = {}) {
  try { return await getJSON(`/api/queries${qs({ method, run_id, page, size })}`) } catch { return EMPTY }
}

export async function fetchSearch({ platform, method, ok, run_id, query, page, size } = {}) {
  try { return await getJSON(`/api/search${qs({ platform, method, ok, run_id, query, page, size })}`) } catch { return EMPTY }
}

// {query文本: {total, ok}} —— 列表页给每条 query 决定「搜索结果」按钮是否可点、显示几个
export async function fetchSearchSummary() {
  try { return (await getJSON('/api/search/summary')).summary || {} } catch { return {} }
}