Add import functionality for EPUB files: create ImportClient component and ModImportPage

app/mod/import/import-client.tsx

@@ -0,0 +1,167 @@
+"use client"
+
+import { useEffect, useMemo, useState } from "react"
+import { toast } from "sonner"
+
+type Asset = { id: string; path: string; status: string }
+type Job = { id: string; sourceAssetId: string; path?: string; status: string; error?: string | null }
+
+export function ImportClient() {
+  const [assets, setAssets] = useState<Asset[]>([])
+  const [jobs, setJobs] = useState<Job[]>([])
+  const [selectedAssetIds, setSelectedAssetIds] = useState<string[]>([])
+  const [lastIndex, setLastIndex] = useState<number | null>(null)
+  const [assetQuery, setAssetQuery] = useState("")
+  const [debouncedQuery, setDebouncedQuery] = useState("")
+  const [loading, setLoading] = useState(false)
+
+  const [selectedJobId, setSelectedJobId] = useState("")
+  const [mapNovelId, setMapNovelId] = useState("")
+
+  const unconvertedAssets = useMemo(() => assets.filter((a) => a.status !== "completed"), [assets])
+
+  useEffect(() => {
+    const t = setTimeout(() => setDebouncedQuery(assetQuery.trim()), 250)
+    return () => clearTimeout(t)
+  }, [assetQuery])
+
+  const refresh = async () => {
+    setLoading(true)
+    try {
+      const aUrl = `/api/mod-import/assets?unconvertedOnly=true&limit=200${debouncedQuery ? `&q=${encodeURIComponent(debouncedQuery)}` : ""}`
+      const [aRes, jRes] = await Promise.all([fetch(aUrl), fetch("/api/mod-import/review-required")])
+      const aData = await aRes.json().catch(() => [])
+      const jData = await jRes.json().catch(() => [])
+      if (!aRes.ok) throw new Error("Không tải được danh sách EPUB")
+      if (!jRes.ok) throw new Error("Không tải được mismatch jobs")
+      setAssets(Array.isArray(aData) ? aData : [])
+      setJobs(Array.isArray(jData) ? jData : [])
+    } catch (e: any) {
+      toast.error(e?.message || "Lỗi tải dữ liệu")
+    } finally {
+      setLoading(false)
+    }
+  }
+
+  useEffect(() => {
+    refresh()
+  }, [debouncedQuery])
+
+  const selectItem = (assetId: string, index: number, shiftKey: boolean) => {
+    if (shiftKey && lastIndex !== null) {
+      const start = Math.min(lastIndex, index)
+      const end = Math.max(lastIndex, index)
+      const range = unconvertedAssets.slice(start, end + 1).map((x) => x.id)
+      setSelectedAssetIds((prev) => Array.from(new Set([...prev, ...range])))
+      return
+    }
+    setLastIndex(index)
+    setSelectedAssetIds((prev) => (prev.includes(assetId) ? prev.filter((x) => x !== assetId) : [...prev, assetId]))
+  }
+
+  const convertSelected = async () => {
+    if (selectedAssetIds.length === 0) return toast.error("Chưa chọn EPUB")
+    let success = 0
+    for (const assetId of selectedAssetIds) {
+      const approveRes = await fetch(`/api/mod-import/assets/${assetId}/approve`, {
+        method: "POST",
+        headers: { "content-type": "application/json" },
+        body: JSON.stringify({ status: "approved" }),
+      })
+      if (!approveRes.ok) continue
+
+      const createRes = await fetch("/api/mod-import/jobs", {
+        method: "POST",
+        headers: { "content-type": "application/json" },
+        body: JSON.stringify({ sourceAssetId: assetId }),
+      })
+      const createData = await createRes.json().catch(() => ({}))
+      if (!createRes.ok) continue
+
+      const runRes = await fetch(`/api/mod-import/jobs/${createData.id}/run`, { method: "POST" })
+      if (runRes.ok) success += 1
+    }
+    toast.success(`Đã convert ${success}/${selectedAssetIds.length} EPUB`)
+    setSelectedAssetIds([])
+    refresh()
+  }
+
+  const mapMismatch = async () => {
+    if (!selectedJobId || !mapNovelId) return toast.error("Chọn mismatch job và nhập novelId")
+    const res = await fetch(`/api/mod-import/jobs/${selectedJobId}/apply-mapping`, {
+      method: "POST",
+      headers: { "content-type": "application/json" },
+      body: JSON.stringify({ novelId: mapNovelId, overwrite: true }),
+    })
+    const data = await res.json().catch(() => ({}))
+    if (!res.ok) return toast.error((data as any)?.detail || "Map thất bại")
+    toast.success(`Map xong: ${data.mapped || 0} chương, thiếu ${data.missing || 0}`)
+    refresh()
+  }
+
+  const deleteMismatchJob = async (jobId: string) => {
+    if (!confirm("Xoá mismatch job này và xoá luôn thư mục content trên NAS?")) return
+    const res = await fetch(`/api/mod-import/jobs/${jobId}?removeContent=true`, { method: "DELETE" })
+    const data = await res.json().catch(() => ({}))
+    if (!res.ok) return toast.error((data as any)?.detail || "Xoá job thất bại")
+    toast.success(`Đã xoá job ${jobId}`)
+    if (selectedJobId === jobId) setSelectedJobId("")
+    refresh()
+  }
+
+  return (
+    <div className="space-y-6">
+      <div className="rounded-2xl border bg-card p-5 shadow-sm">
+        <div className="flex items-center justify-between gap-3 mb-3">
+          <div>
+            <h3 className="font-semibold">EPUB nguồn (chưa convert)</h3>
+            <p className="text-xs text-muted-foreground mt-1">Click để chọn, Shift + click để chọn một khoảng, sau đó bấm Convert.</p>
+          </div>
+          <button onClick={refresh} className="rounded border px-3 py-2 text-sm">{loading ? "Đang tải..." : "Refresh"}</button>
+        </div>
+        <input className="border rounded px-3 py-2 text-sm w-full mb-3" placeholder="Tìm theo tên file/thư mục..." value={assetQuery} onChange={(e) => setAssetQuery(e.target.value)} />
+        <div className="space-y-2">
+          {unconvertedAssets.map((a, idx) => (
+            <button
+              key={a.id}
+              onClick={(e) => selectItem(a.id, idx, e.shiftKey)}
+              className={`w-full rounded-xl border p-3 text-left transition ${selectedAssetIds.includes(a.id) ? "border-primary bg-primary/5" : "hover:bg-muted/40"}`}
+            >
+              <div className="text-sm font-medium">{a.path}</div>
+              <div className="text-xs text-muted-foreground mt-1">status: {a.status}</div>
+            </button>
+          ))}
+          {unconvertedAssets.length === 0 && <div className="text-sm text-muted-foreground">Không có EPUB phù hợp</div>}
+        </div>
+        <div className="mt-3 flex items-center justify-between gap-3">
+          <div className="text-xs text-muted-foreground">Đã chọn {selectedAssetIds.length} file</div>
+          <button disabled={selectedAssetIds.length === 0} onClick={convertSelected} className="rounded bg-primary px-4 py-2 text-sm text-primary-foreground disabled:opacity-50">Convert</button>
+        </div>
+      </div>
+
+      <div className="rounded-2xl border bg-card p-5 shadow-sm">
+        <h3 className="font-semibold">Mismatch / Review Jobs</h3>
+        <p className="text-xs text-muted-foreground mt-1">Danh sách job bị mismatch (sum/path/mapping). Chọn job rồi nhập novelId để map lại, không convert lại EPUB.</p>
+        <div className="space-y-2 mt-3">
+          {jobs.map((j) => (
+            <div key={j.id} className={`w-full rounded-xl border p-3 ${selectedJobId === j.id ? "border-primary bg-primary/5" : "hover:bg-muted/40"}`}>
+              <button onClick={() => setSelectedJobId(j.id)} className="w-full text-left">
+                <div className="text-xs text-muted-foreground">{j.id}</div>
+                <div className="text-sm font-medium">{j.path || j.sourceAssetId}</div>
+                <div className="text-xs text-amber-700 mt-1">{j.error || "review_required"}</div>
+              </button>
+              <div className="mt-2">
+                <button onClick={() => deleteMismatchJob(j.id)} className="rounded border border-red-300 px-2 py-1 text-xs text-red-700 hover:bg-red-50">Xoá job + content</button>
+              </div>
+            </div>
+          ))}
+          {jobs.length === 0 && <div className="text-sm text-muted-foreground">Không có mismatch job</div>}
+        </div>
+        <div className="mt-3 flex gap-2">
+          <input value={mapNovelId} onChange={(e) => setMapNovelId(e.target.value)} className="border rounded px-3 py-2 text-sm flex-1" placeholder="Novel ID cần map lại" />
+          <button disabled={!selectedJobId || !mapNovelId} onClick={mapMismatch} className="rounded border px-3 py-2 text-sm disabled:opacity-50">Map lại</button>
+        </div>
+      </div>
+    </div>
+  )
+}