import { useEffect, useMemo, useState } from 'react';
import { Link, useParams } from 'react-router-dom';
import { ArrowLeft, ImageIcon, MessageCircle, Pencil, Plus, Search, X } from 'lucide-react';
import type { Note, Project, ReviewStatus, WorkCollection } from '@shared/types';
import { api } from '@/api/client';
import StatusBadge from '@/components/StatusBadge';
import { useAuthStore } from '@/store/useAuthStore';
import CollectionStatusBadge from '@/components/CollectionStatusBadge';

export default function CollectionPage(){
  const {projectId,collectionId}=useParams(); const pid=Number(projectId),cid=Number(collectionId); const [project,setProject]=useState<Project|null>(null); const [collection,setCollection]=useState<WorkCollection|null>(null); const [works,setWorks]=useState<Note[]>([]); const [q,setQ]=useState(''); const [status,setStatus]=useState<ReviewStatus|''>('');
  const [editing,setEditing]=useState(false); const [editName,setEditName]=useState(''); const [editDesc,setEditDesc]=useState('');
  const user=useAuthStore(state=>state.user);
  useEffect(()=>{Promise.all([api.getProject(pid),api.listCollections(pid),api.listNotes({collectionId:cid})]).then(([p,cs,w])=>{setProject(p);setCollection(cs.find(x=>x.id===cid)||null);setWorks(w)})},[pid,cid]);
  const filtered=useMemo(()=>works.filter(w=>(!q||w.title.toLowerCase().includes(q.toLowerCase()))&&(!status||w.review_status===status)),[works,q,status]); if(!project||!collection)return null;
  return <main className="mx-auto max-w-[1500px] px-5 py-8 lg:px-10 lg:py-12"><Link to={`/projects/${pid}`} className="inline-flex items-center gap-2 text-xs text-black/45"><ArrowLeft size={14}/>{project.name}</Link>
    <section className="mt-8 flex flex-col gap-7 border-b border-black/10 pb-9 md:flex-row md:items-end md:justify-between"><div><div className="flex items-center gap-3"><p className="font-mono text-[10px] uppercase tracking-[.28em] text-[#ef4b2f]">Collection / Review Board</p><CollectionStatusBadge status={collection.status}/></div><h1 className="mt-3 font-display text-5xl tracking-[-.05em] md:text-6xl">{collection.name}</h1><p className="mt-3 text-sm text-black/50">{collection.client_description}</p><p className="mt-3 text-xs text-black/35">{collection.work_count ? `${collection.approved_count}/${collection.work_count} 件作品已通过` : '上传首件作品后自动进入验收'}</p></div>{user&&<div className="flex flex-col gap-2 sm:flex-row"><button onClick={()=>{setEditName(collection.name);setEditDesc(collection.client_description);setEditing(true)}} className="inline-flex items-center justify-center gap-2 rounded-full border border-black/15 bg-white px-5 py-3 text-sm"><Pencil size={14}/>编辑作品交付集</button><Link to={`/projects/${pid}/collections/${cid}/upload`} className="inline-flex items-center justify-center gap-2 rounded-full bg-black px-6 py-3 text-sm text-white"><Plus size={16}/> 上传作品</Link></div>}</section>
    <section className="sticky top-[66px] z-30 -mx-5 mt-0 flex flex-col gap-3 border-b border-black/10 bg-[#f7f6f2]/90 px-5 py-4 backdrop-blur md:flex-row md:items-center md:justify-between lg:-mx-10 lg:px-10"><div className="flex gap-2 overflow-auto">{([['','全部'],['pending','待验收'],['changes_requested','需修改'],['approved','已通过']] as [ReviewStatus|'',string][]).map(([v,l])=><button key={l} onClick={()=>setStatus(v)} className={`whitespace-nowrap rounded-full px-4 py-2 text-xs ${status===v?'bg-black text-white':'bg-white text-black/55'}`}>{l}</button>)}</div><label className="relative"><Search className="absolute left-3 top-2.5 text-black/35" size={15}/><input value={q} onChange={e=>setQ(e.target.value)} className="w-full rounded-full border border-black/10 bg-white py-2 pl-9 pr-4 text-sm md:w-64" placeholder="搜索作品标题"/></label></section>
    <div className="mt-8 grid grid-cols-2 gap-x-4 gap-y-8 md:grid-cols-3 lg:grid-cols-4 xl:grid-cols-5">{filtered.map((work,i)=><Link to={`/works/${work.id}`} key={work.id} className="group"><article><div className={`relative overflow-hidden rounded-2xl bg-[#ebe9e3] ${i%5===0?'aspect-[4/5]':'aspect-square'}`}>{work.cover_image?<img src={work.cover_image} alt={work.title} className="h-full w-full object-cover transition duration-700 group-hover:scale-105"/>:<div className="grid h-full place-items-center"><ImageIcon/></div>}<div className="absolute left-2 top-2"><StatusBadge status={work.review_status}/></div>{work.image_count>1&&<span className="absolute right-2 top-2 rounded-full bg-black/65 px-2 py-1 text-[10px] text-white">{work.image_count} 图</span>}</div><h3 className="mt-3 line-clamp-2 text-[15px] font-semibold leading-5">{work.title}</h3><div className="mt-2 flex items-center gap-3 text-[11px] text-black/40"><span className="flex items-center gap-1"><MessageCircle size={12}/>{work.annotation_count+work.comment_count}</span>{work.tags.slice(0,2).map(t=><span key={t}>#{t}</span>)}</div></article></Link>)}</div>
    {editing&&<div className="fixed inset-0 z-[80] grid place-items-center bg-black/45 p-4"><div className="w-full max-w-md rounded-3xl bg-[#f7f6f2] p-7"><div className="flex items-center justify-between"><div><Pencil/><h3 className="mt-3 font-display text-3xl">编辑作品交付集</h3></div><button onClick={()=>setEditing(false)}><X/></button></div><label className="mt-7 block text-xs text-black/45">作品交付集名称<input className="mt-2 w-full rounded-xl border border-black/10 p-3 text-sm" value={editName} onChange={e=>setEditName(e.target.value)}/></label><label className="mt-4 block text-xs text-black/45">客户说明<textarea className="mt-2 w-full rounded-xl border border-black/10 p-3 text-sm" rows={4} value={editDesc} onChange={e=>setEditDesc(e.target.value)}/></label><button disabled={!editName.trim()} onClick={async()=>{const updated=await api.updateCollection(pid,cid,{name:editName,client_description:editDesc});setCollection(updated);setEditing(false)}} className="mt-5 w-full rounded-full bg-black py-3 text-white disabled:opacity-30">保存修改</button></div></div>}
  </main>
}