# All files / src/components NoteList.tsx

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     import { useState, useMemo, useCallback, memo } from 'react'
    import { Virtuoso } from 'react-virtuoso'
    import type { VaultEntry, SidebarSelection, ModifiedFile, NoteStatus } from '../types'
    import { Input } from '@/components/ui/input'
    import {
      MagnifyingGlass, Plus, CaretDown, CaretRight, Warning,
    } from '@phosphor-icons/react'
    import { getTypeColor, getTypeLightColor } from '../utils/typeColors'
    import { NoteItem, getTypeIcon } from './NoteItem'
    import { SortDropdown } from './SortDropdown'
    import {
      type SortOption, type SortDirection, type SortConfig, type RelationshipGroup,
      getSortComparator,
      buildRelationshipGroups, filterEntries,
      relativeDate, getDisplayDate,
      loadSortPreferences, saveSortPreferences,
    } from '../utils/noteListHelpers'

    interface NoteListProps {
      entries: VaultEntry[]
      selection: SidebarSelection
      selectedNote: VaultEntry | null
      allContent: Record<string, string>
      modifiedFiles?: ModifiedFile[]
      getNoteStatus?: (path: string) => NoteStatus
      onSelectNote: (entry: VaultEntry) => void
      onReplaceActiveTab: (entry: VaultEntry) => void
      onCreateNote: () => void
    }

    function PinnedCard({ entry, typeEntryMap, onClickNote, showDate }: {
      entry: VaultEntry
      typeEntryMap: Record<string, VaultEntry>
      onClickNote: (entry: VaultEntry, e: React.MouseEvent) => void
      showDate?: boolean
    }) {
      const te = typeEntryMap[entry.isA ?? '']
      const color = getTypeColor(entry.isA ?? '', te?.color)
      const bgColor = getTypeLightColor(entry.isA ?? '', te?.color)
      const Icon = getTypeIcon(entry.isA, te?.icon)
      return (
        <div className="relative cursor-pointer border-b border-[var(--border)]" style={{ backgroundColor: bgColor, padding: '14px 16px' }} onClick={(e: React.MouseEvent) => onClickNote(entry, e)}>
          {/* eslint-disable-next-line react-hooks/static-components */}
          <Icon width={16} height={16} className="absolute right-3 top-3.5" style={{ color }} data-testid="type-icon" />
          <div className="pr-6 text-[14px] font-bold" style={{ color }}>{entry.title}</div>
          <div className="mt-1 text-[12px] leading-[1.5] opacity-80" style={{ color, display: '-webkit-box', WebkitLineClamp: 2, WebkitBoxOrient: 'vertical', overflow: 'hidden' }}>{entry.snippet}</div>
          {showDate && <div className="mt-1 text-[11px] opacity-60" style={{ color }}>{relativeDate(getDisplayDate(entry))}</div>}
        </div>
      )
    }

    function RelationshipGroupSection({ group, isCollapsed, sortPrefs, onToggle, handleSortChange, renderItem }: {
      group: RelationshipGroup
      isCollapsed: boolean
      sortPrefs: Record<string, SortConfig>
      onToggle: () => void
      handleSortChange: (groupLabel: string, option: SortOption, direction: SortDirection) => void
      renderItem: (entry: VaultEntry) => React.ReactNode
    }) {
      const groupConfig = sortPrefs[group.label] ?? { option: 'modified' as SortOption, direction: 'desc' as SortDirection }
      const sortedEntries = [...group.entries].sort(getSortComparator(groupConfig.option, groupConfig.direction))
      return (
        <div>
          <div className="flex w-full items-center justify-between bg-muted" style={{ height: 32, padding: '0 16px' }}>
            <button className="flex flex-1 items-center gap-1.5 border-none bg-transparent cursor-pointer p-0" onClick={onToggle}>
              <span className="font-mono-label text-muted-foreground">{group.label}</span>
              <span className="font-mono-label text-muted-foreground" style={{ fontWeight: 400 }}>{group.entries.length}</span>
            </button>
            <span className="flex items-center gap-1.5">
              <SortDropdown groupLabel={group.label} current={groupConfig.option} direction={groupConfig.direction} onChange={handleSortChange} />
              <button className="flex items-center border-none bg-transparent cursor-pointer p-0 text-muted-foreground" onClick={onToggle}>
                {isCollapsed ? <CaretRight size={12} /> : <CaretDown size={12} />}
              </button>
            </span>
          </div>
          {!isCollapsed && sortedEntries.map((entry) => renderItem(entry))}
        </div>
      )
    }

    function TrashWarningBanner({ expiredCount }: { expiredCount: number }) {
      Iif (expiredCount === 0) return null
      return (
        <div className="flex items-start gap-2 border-b border-[var(--border)]" style={{ padding: '10px 12px', background: 'color-mix(in srgb, var(--destructive) 6%, transparent)' }}>
          <Warning size={16} className="shrink-0" style={{ color: 'var(--destructive)', marginTop: 1 }} />
          <div>
            <div style={{ fontSize: 12, fontWeight: 600, color: 'var(--destructive)' }}>Notes in trash for 30+ days will be permanently deleted</div>
            <div className="text-muted-foreground" style={{ fontSize: 11 }}>{expiredCount} {expiredCount === 1 ? 'note is' : 'notes are'} past the 30-day retention period</div>
          </div>
        </div>
      )
    }

    function EmptyMessage({ text }: { text: string }) {
      return <div className="px-4 py-8 text-center text-[13px] text-muted-foreground">{text}</div>
    }

    function resolveHeaderTitle(selection: SidebarSelection, typeDocument: VaultEntry | null): string {
      if (selection.kind === 'entity') return selection.entry.title
      Iif (typeDocument) return typeDocument.title
      Iif (selection.kind === 'filter' && selection.filter === 'archived') return 'Archive'
      if (selection.kind === 'filter' && selection.filter === 'trash') return 'Trash'
      if (selection.kind === 'filter' && selection.filter === 'changes') return 'Changes'
      return 'Notes'
    }

    function useTypeEntryMap(entries: VaultEntry[]) {
      return useMemo(() => {
        const map: Record<string, VaultEntry> = {}
        for (const e of entries) {
          Iif (e.isA === 'Type') map[e.title] = e
        }
        return map
      }, [entries])
    }

    // --- View sub-components ---

    function EntityView({ entity, groups, query, collapsedGroups, sortPrefs, onToggleGroup, onSortChange, renderItem, typeEntryMap, onClickNote }: {
      entity: VaultEntry; groups: RelationshipGroup[]; query: string
      collapsedGroups: Set<string>; sortPrefs: Record<string, SortConfig>
      onToggleGroup: (label: string) => void; onSortChange: (label: string, opt: SortOption, dir: SortDirection) => void
      renderItem: (entry: VaultEntry) => React.ReactNode
      typeEntryMap: Record<string, VaultEntry>; onClickNote: (entry: VaultEntry, e: React.MouseEvent) => void
    }) {
      return (
        <div className="h-full overflow-y-auto">
          <PinnedCard entry={entity} typeEntryMap={typeEntryMap} onClickNote={onClickNote} showDate />
          {groups.length === 0
            ? <EmptyMessage text={query ? 'No matching items' : 'No related items'} />
            : groups.map((group) => (
              <RelationshipGroupSection key={group.label} group={group} isCollapsed={collapsedGroups.has(group.label)} sortPrefs={sortPrefs} onToggle={() => onToggleGroup(group.label)} handleSortChange={onSortChange} renderItem={renderItem} />
            ))
          }
        </div>
      )
    }

    function ListViewHeader({ typeDocument, isTrashView, expiredTrashCount, typeEntryMap, onClickNote }: {
      typeDocument: VaultEntry | null; isTrashView: boolean; expiredTrashCount: number
      typeEntryMap: Record<string, VaultEntry>; onClickNote: (entry: VaultEntry, e: React.MouseEvent) => void
    }) {
      return (
        <>
          {typeDocument && <PinnedCard entry={typeDocument} typeEntryMap={typeEntryMap} onClickNote={onClickNote} />}
          <TrashWarningBanner expiredCount={isTrashView ? expiredTrashCount : 0} />
        </>
      )
    }

    function ListView({ typeDocument, isTrashView, isChangesView, expiredTrashCount, searched, query, renderItem, typeEntryMap, onClickNote }: {
      typeDocument: VaultEntry | null; isTrashView: boolean; isChangesView?: boolean; expiredTrashCount: number
      searched: VaultEntry[]; query: string
      renderItem: (entry: VaultEntry) => React.ReactNode
      typeEntryMap: Record<string, VaultEntry>; onClickNote: (entry: VaultEntry, e: React.MouseEvent) => void
    }) {
      const emptyText = isChangesView ? 'No pending changes' : isTrashView ? 'Trash is empty' : (query ? 'No matching notes' : 'No notes found')
      const hasHeader = typeDocument || (isTrashView && expiredTrashCount > 0)

      if (searched.length === 0) {
        return (
          <div className="h-full overflow-y-auto">
            {hasHeader && <ListViewHeader typeDocument={typeDocument} isTrashView={isTrashView} expiredTrashCount={expiredTrashCount} typeEntryMap={typeEntryMap} onClickNote={onClickNote} />}
            <EmptyMessage text={emptyText} />
          </div>
        )
      }

      return (
        <Virtuoso
          style={{ height: '100%' }}
          data={searched}
          overscan={200}
          components={{
            Header: hasHeader ? () => <ListViewHeader typeDocument={typeDocument} isTrashView={isTrashView} expiredTrashCount={expiredTrashCount} typeEntryMap={typeEntryMap} onClickNote={onClickNote} /> : undefined,
          }}
          itemContent={(_index, entry) => renderItem(entry)}
        />
      )
    }

    // --- Pure helpers ---

    function filterByQuery<T extends { title: string }>(items: T[], query: string): T[] {
      return query ? items.filter((e) => e.title.toLowerCase().includes(query)) : items
    }

    function filterGroupsByQuery(groups: RelationshipGroup[], query: string): RelationshipGroup[] {
      Eif (!query) return groups
      return groups.map((g) => ({ ...g, entries: filterByQuery(g.entries, query) })).filter((g) => g.entries.length > 0)
    }

    function countExpiredTrash(entries: VaultEntry[]): number {
      const now = Date.now() / 1000
      return entries.filter((e) => e.trashedAt && (now - e.trashedAt) >= 86400 * 30).length
    }

    // --- Click routing ---

    function routeNoteClick(
      entry: VaultEntry, e: React.MouseEvent,
      onSelectNote: (entry: VaultEntry) => void,
      onReplaceActiveTab: (entry: VaultEntry) => void,
    ) {
      if (e.metaKey || e.ctrlKey) { onSelectNote(entry) } else { onReplaceActiveTab(entry) }
    }

    // --- Data hooks ---

    interface NoteListDataParams {
      entries: VaultEntry[]; selection: SidebarSelection; allContent: Record<string, string>
      query: string; listSort: SortOption; listDirection: SortDirection
      modifiedPathSet: Set<string>
    }

    function useNoteListData({ entries, selection, allContent, query, listSort, listDirection, modifiedPathSet }: NoteListDataParams) {
      const isEntityView = selection.kind === 'entity'
      const isTrashView = selection.kind === 'filter' && selection.filter === 'trash'
      const isChangesView = selection.kind === 'filter' && selection.filter === 'changes'

      const typeDocument = useMemo(() => {
        if (selection.kind !== 'sectionGroup') return null
        return entries.find((e) => e.isA === 'Type' && e.title === selection.type) ?? null
      }, [selection, entries])

      const searched = useMemo(() => {
        if (isEntityView) return []
        if (isChangesView) {
          const sorted = [...entries.filter((e) => modifiedPathSet.has(e.path))].sort(getSortComparator(listSort, listDirection))
          return filterByQuery(sorted, query)
        }
        const sorted = [...filterEntries(entries, selection)].sort(getSortComparator(listSort, listDirection))
        return filterByQuery(sorted, query)
      }, [entries, selection, isEntityView, isChangesView, listSort, listDirection, query, modifiedPathSet])

      const searchedGroups = useMemo(() => {
        if (!isEntityView) return []
        const groups = buildRelationshipGroups(selection.entry, entries, allContent)
        return filterGroupsByQuery(groups, query)
      }, [isEntityView, selection, entries, allContent, query])

      const expiredTrashCount = useMemo(
        () => isTrashView ? countExpiredTrash(searched) : 0,
        [isTrashView, searched],
      )

      return { isEntityView, isTrashView, isChangesView, typeDocument, searched, searchedGroups, expiredTrashCount }
    }

    // --- Main component ---

    const defaultGetNoteStatus = (): NoteStatus => 'clean'

    function NoteListInner({ entries, selection, selectedNote, allContent, modifiedFiles, getNoteStatus, onSelectNote, onReplaceActiveTab, onCreateNote }: NoteListProps) {
      const [search, setSearch] = useState('')
      const [searchVisible, setSearchVisible] = useState(false)
      const [collapsedGroups, setCollapsedGroups] = useState<Set<string>>(new Set())
      const [sortPrefs, setSortPrefs] = useState<Record<string, SortConfig>>(loadSortPreferences)

      const modifiedPathSet = useMemo(
        () => new Set((modifiedFiles ?? []).map((f) => f.path)),
        [modifiedFiles],
      )

      // Resolve note status: prefer explicit getNoteStatus prop; fall back to modifiedFiles-derived status
      const resolvedGetNoteStatus = useMemo<(path: string) => NoteStatus>(() => {
        if (getNoteStatus) return getNoteStatus
        if (modifiedFiles && modifiedFiles.length > 0) {
          return (path: string) => modifiedPathSet.has(path) ? 'modified' : 'clean'
        }
        return defaultGetNoteStatus
      }, [getNoteStatus, modifiedFiles, modifiedPathSet])

      const handleSortChange = useCallback((groupLabel: string, option: SortOption, direction: SortDirection) => {
        setSortPrefs((prev) => { const next = { ...prev, [groupLabel]: { option, direction } }; saveSortPreferences(next); return next })
      }, [])

      const toggleGroup = useCallback((label: string) => {
        setCollapsedGroups((prev) => { const next = new Set(prev); if (next.has(label)) { next.delete(label) } else { next.add(label) }; return next })
      }, [])

      const typeEntryMap = useTypeEntryMap(entries)
      const query = search.trim().toLowerCase()
      const listConfig = sortPrefs['__list__'] ?? { option: 'modified' as SortOption, direction: 'desc' as SortDirection }
      const listSort = listConfig.option
      const listDirection = listConfig.direction
      const { isEntityView, isTrashView, isChangesView, typeDocument, searched, searchedGroups, expiredTrashCount } = useNoteListData({ entries, selection, allContent, query, listSort, listDirection, modifiedPathSet })

      const handleClickNote = useCallback((entry: VaultEntry, e: React.MouseEvent) => {
        routeNoteClick(entry, e, onSelectNote, onReplaceActiveTab)
      }, [onSelectNote, onReplaceActiveTab])

      const renderItem = useCallback((entry: VaultEntry) => (
        <NoteItem key={entry.path} entry={entry} isSelected={selectedNote?.path === entry.path} noteStatus={resolvedGetNoteStatus(entry.path)} typeEntryMap={typeEntryMap} onClickNote={handleClickNote} />
      ), [selectedNote?.path, handleClickNote, typeEntryMap, resolvedGetNoteStatus])

      return (
        <div className="flex flex-col overflow-hidden border-r border-border bg-card text-foreground" style={{ height: '100%' }}>
          <div className="flex h-[45px] shrink-0 items-center justify-between border-b border-border px-4" data-tauri-drag-region style={{ WebkitAppRegion: 'drag' } as React.CSSProperties}>
            <h3 className="m-0 min-w-0 flex-1 truncate text-[14px] font-semibold">{resolveHeaderTitle(selection, typeDocument)}</h3>
            <div className="flex items-center gap-3" style={{ WebkitAppRegion: 'no-drag' } as React.CSSProperties}>
              {!isEntityView && <SortDropdown groupLabel="__list__" current={listSort} direction={listDirection} onChange={handleSortChange} />}
              <button className="flex items-center text-muted-foreground transition-colors hover:text-foreground" onClick={() => { setSearchVisible(!searchVisible); Iif (searchVisible) setSearch('') }} title="Search notes">
                <MagnifyingGlass size={16} />
              </button>
              <button className="flex items-center text-muted-foreground transition-colors hover:text-foreground" onClick={() => onCreateNote()} title="Create new note">
                <Plus size={16} />
              </button>
            </div>
          </div>

          {searchVisible && (
            <div className="border-b border-border px-3 py-2">
              <Input placeholder="Search notes..." value={search} onChange={(e) => setSearch(e.target.value)} className="h-8 text-[13px]" autoFocus />
            </div>
          )}

          <div className="flex-1 overflow-hidden" style={{ minHeight: 0 }}>
            {isEntityView && selection.kind === 'entity' ? (
              <EntityView entity={selection.entry} groups={searchedGroups} query={query} collapsedGroups={collapsedGroups} sortPrefs={sortPrefs} onToggleGroup={toggleGroup} onSortChange={handleSortChange} renderItem={renderItem} typeEntryMap={typeEntryMap} onClickNote={handleClickNote} />
            ) : (
              <ListView typeDocument={typeDocument} isTrashView={isTrashView} isChangesView={isChangesView} expiredTrashCount={expiredTrashCount} searched={searched} query={query} renderItem={renderItem} typeEntryMap={typeEntryMap} onClickNote={handleClickNote} />
            )}
          </div>
        </div>
      )
    }

    export const NoteList = memo(NoteListInner)