const terminal = new Set(['complete','failed','cancelled'])
// Include enhancing so PE is the same queue row as generate (not a vanished "Queue 0").
const running = new Set(['waking','enhancing','submitting','rendering','saving'])
export function queueJobs(jobs) {
 return jobs.filter(j=>running.has(j.state)||['waiting','queued','held'].includes(j.state)).sort((a,b)=>Number(running.has(b.state))-Number(running.has(a.state)) || (a.queuedAt||0)-(b.queuedAt||0))
}
export function jobView(record, queue, live) {
 const statuses={complete:'complete',error:'failed',cancelled:'cancelled'}
 const state=statuses[queue?.status] || (!live?.saving && statuses[live?.status]) || (queue?.status==='held'?'held':record.state)
 const finishedAt=terminal.has(state)?record.finishedAt || (statuses[queue?.status]?queue.updatedAt:0) || (state==='complete'?record.savedAt:0) || record.updatedAt || record.startedAt || record.queuedAt:undefined
 return {...record,state,finishedAt,error:record.error || queue?.lastError || live?.error}
}
export function elapsedSeconds(job, now) {
 const start=job.startedAt || job.queuedAt
 const end=terminal.has(job.state)?job.finishedAt || job.savedAt || job.updatedAt || start:now
 return Number.isFinite(start)&&Number.isFinite(end)?Math.max(0,Math.floor((end-start)/1000)):0
}

/** Stage label shown on the queue row (header pill uses status.mjs). */
export function jobStageLabel(state) {
 const labels={
  waiting:'Queued',queued:'Queued',held:'Held',
  waking:'Waking up',enhancing:'Enhancing prompt…',
  submitting:'Generating…',rendering:'Generating…',saving:'Saving',
  complete:'Ready',failed:'Failed',cancelled:'Cancelled',
 }
 return labels[state] || state
}

/** Compact progress for the queue row. Enhancing prefers indeterminate over a fake 0%. */
export function jobProgressView(job) {
 const state=job?.state
 if(!['enhancing','submitting','rendering','waking','saving'].includes(state)) return null
 const p=job?.progress
 if(state==='enhancing'){
  if(p && Number(p.maxStep)>0 && Number(p.step)>=0)
   return {indeterminate:false,percent:Math.max(0,Math.min(100,Number(p.percent)||Math.round(Number(p.step)/Number(p.maxStep)*100)))}
  return {indeterminate:true,percent:null}
 }
 if(state==='rendering' && p && Number(p.maxStep)>0)
  return {indeterminate:false,percent:Math.max(0,Math.min(100,Number(p.percent)||Math.round(Number(p.step)/Number(p.maxStep)*100)))}
 // waking / submitting / saving / rendering without steps: no fake bar
 if(state==='submitting' || state==='waking') return {indeterminate:true,percent:null}
 return null
}