export interface NestedTreeItem {
  id: number;
  title: string;
  type: 'directory' | 'file';
  description?: string;
  children: NestedTreeItem[];
}

export interface FlatTreeItem {
  id: number;
  title: string;
  type: 'directory' | 'file';
  description?: string;
  parentId: number | null;
}

export const nestedTreeItems: NestedTreeItem[] = [
  {
    id: 1,
    title: 'Documents',
    type: 'directory',
    description: 'All your important documents',
    children: [
      {
        id: 2,
        title: 'Project',
        type: 'directory',
        children: [
          {
            id: 3,
            title: 'Weekly Report',
            type: 'file',
            description: 'Summary of weekly activities and progress',
            children: [],
          },
          { id: 4, title: 'Budget', type: 'file', children: [] },
          {
            id: 5,
            title: 'Presentations',
            type: 'directory',
            description: 'Quarterly and annual presentations',
            children: [
              { id: 6, title: 'Q1 Review', type: 'file', children: [] },
              {
                id: 7,
                title: 'Q2 Review',
                type: 'file',
                description: 'Second quarter performance review',
                children: [],
              },
              { id: 8, title: 'Annual Summary', type: 'file', children: [] },
            ],
          },
        ],
      },
      {
        id: 9,
        title: 'Personal',
        type: 'directory',
        children: [
          {
            id: 10,
            title: 'Resume',
            type: 'file',
            description: 'Updated professional resume',
            children: [],
          },
          { id: 11, title: 'Cover Letter', type: 'file', children: [] },
        ],
      },
      { id: 12, title: 'README.md', type: 'file', children: [] },
    ],
  },
  {
    id: 13,
    title: 'Photos',
    type: 'directory',
    children: [
      {
        id: 14,
        title: '2025',
        type: 'directory',
        description: 'Photos from last year',
        children: [
          {
            id: 15,
            title: 'Vacation',
            type: 'directory',
            children: [
              { id: 16, title: 'Beach 1', type: 'file', children: [] },
              {
                id: 17,
                title: 'Beach 2',
                type: 'file',
                description: 'Beautiful sunset at the beach',
                children: [],
              },
              { id: 18, title: 'Sunset', type: 'file', children: [] },
            ],
          },
          {
            id: 19,
            title: 'Work Events',
            type: 'directory',
            description: 'Company events and gatherings',
            children: [
              { id: 20, title: 'Conference', type: 'file', children: [] },
              { id: 21, title: 'Team Building', type: 'file', children: [] },
            ],
          },
        ],
      },
      {
        id: 22,
        title: '2026',
        type: 'directory',
        children: [{ id: 23, title: 'New Year', type: 'file', children: [] }],
      },
    ],
  },
  {
    id: 24,
    title: 'Downloads',
    type: 'directory',
    description: 'Recently downloaded files',
    children: [
      {
        id: 25,
        title: 'invoice.pdf',
        type: 'file',
        description: 'January invoice for services',
        children: [],
      },
      { id: 26, title: 'setup.exe', type: 'file', children: [] },
      {
        id: 27,
        title: 'Archives',
        type: 'directory',
        children: [
          {
            id: 28,
            title: 'backup-2025.zip',
            type: 'file',
            description: 'Full system backup from December 2025',
            children: [],
          },
          { id: 29, title: 'backup-2024.zip', type: 'file', children: [] },
        ],
      },
    ],
  },
];

// Generate additional items to reach 1000 total
function generateNestedTreeItems(): NestedTreeItem[] {
  const baseItems = [...nestedTreeItems];
  let currentId = 30; // Start after existing items

  // Add more root folders
  for (let i = 0; i < 10; i++) {
    const rootFolder: NestedTreeItem = {
      id: currentId++,
      title: `Folder ${i + 1}`,
      type: 'directory',
      description: i % 3 === 0 ? `Description for Folder ${i + 1}` : undefined,
      children: [],
    };

    // Add 3 levels of nested items
    for (let level1 = 0; level1 < 8; level1++) {
      const level1Folder: NestedTreeItem = {
        id: currentId++,
        title: `Subfolder ${i + 1}.${level1 + 1}`,
        type: 'directory',
        description: level1 % 4 === 0 ? `Level 1 subfolder description` : undefined,
        children: [],
      };

      // Add files and subfolders
      for (let level2 = 0; level2 < 10; level2++) {
        if (level2 % 3 === 0) {
          // Add subfolder with files
          const level2Folder: NestedTreeItem = {
            id: currentId++,
            title: `Category ${i + 1}.${level1 + 1}.${level2 + 1}`,
            type: 'directory',
            children: [],
          };

          // Add files to this subfolder
          for (let level3 = 0; level3 < 5; level3++) {
            level2Folder.children.push({
              id: currentId++,
              title: `Item ${i + 1}.${level1 + 1}.${level2 + 1}.${level3 + 1}`,
              type: 'file',
              description: level3 % 2 === 0 ? `File description` : undefined,
              children: [],
            });
          }

          level1Folder.children.push(level2Folder);
        } else {
          // Add direct file
          level1Folder.children.push({
            id: currentId++,
            title: `File ${i + 1}.${level1 + 1}.${level2 + 1}`,
            type: 'file',
            children: [],
          });
        }
      }

      rootFolder.children.push(level1Folder);
    }

    baseItems.push(rootFolder);
  }

  return baseItems;
}

export const nestedTreeItemsLarge = generateNestedTreeItems();

export const flatTreeItems: FlatTreeItem[] = [
  { id: 1, title: 'Documents', type: 'directory', description: 'All your important documents', parentId: null },
  { id: 2, title: 'Project', type: 'directory', parentId: 1 },
  {
    id: 3,
    title: 'Weekly Report',
    type: 'file',
    description: 'Summary of weekly activities and progress',
    parentId: 2,
  },
  { id: 4, title: 'Budget', type: 'file', parentId: 2 },
  { id: 5, title: 'Presentations', type: 'directory', description: 'Quarterly and annual presentations', parentId: 2 },
  { id: 6, title: 'Q1 Review', type: 'file', parentId: 5 },
  { id: 7, title: 'Q2 Review', type: 'file', description: 'Second quarter performance review', parentId: 5 },
  { id: 8, title: 'Annual Summary', type: 'file', parentId: 5 },
  { id: 9, title: 'Personal', type: 'directory', parentId: 1 },
  { id: 10, title: 'Resume', type: 'file', description: 'Updated professional resume', parentId: 9 },
  { id: 11, title: 'Cover Letter', type: 'file', parentId: 9 },
  { id: 12, title: 'README.md', type: 'file', parentId: 1 },
  { id: 13, title: 'Photos', type: 'directory', parentId: null },
  { id: 14, title: '2025', type: 'directory', description: 'Photos from last year', parentId: 13 },
  { id: 15, title: 'Vacation', type: 'directory', parentId: 14 },
  { id: 16, title: 'Beach 1', type: 'file', parentId: 15 },
  { id: 17, title: 'Beach 2', type: 'file', description: 'Beautiful sunset at the beach', parentId: 15 },
  { id: 18, title: 'Sunset', type: 'file', parentId: 15 },
  { id: 19, title: 'Work Events', type: 'directory', description: 'Company events and gatherings', parentId: 14 },
  { id: 20, title: 'Conference', type: 'file', parentId: 19 },
  { id: 21, title: 'Team Building', type: 'file', parentId: 19 },
  { id: 22, title: '2026', type: 'directory', parentId: 13 },
  { id: 23, title: 'New Year', type: 'file', parentId: 22 },
  { id: 24, title: 'Downloads', type: 'directory', description: 'Recently downloaded files', parentId: null },
  { id: 25, title: 'invoice.pdf', type: 'file', description: 'January invoice for services', parentId: 24 },
  { id: 26, title: 'setup.exe', type: 'file', parentId: 24 },
  { id: 27, title: 'Archives', type: 'directory', parentId: 24 },
  {
    id: 28,
    title: 'backup-2025.zip',
    type: 'file',
    description: 'Full system backup from December 2025',
    parentId: 27,
  },
  { id: 29, title: 'backup-2024.zip', type: 'file', parentId: 27 },
];

// Lazy-loadable tree items
export interface LazyTreeItem {
  id: number;
  title: string;
  type: 'directory' | 'file';
  description?: string;
  hasChildren?: boolean;
  children?: LazyTreeItem[];
}

export const lazyTreeItems: LazyTreeItem[] = [
  { id: 1, title: 'Documents', type: 'directory', description: 'All your important documents', hasChildren: true },
  { id: 13, title: 'Photos', type: 'directory', hasChildren: true },
  { id: 24, title: 'Downloads', type: 'directory', description: 'Recently downloaded files', hasChildren: false },
];

export const lazyTreeItemsChildrenMap: Record<number | string, LazyTreeItem[]> = {
  1: [
    { id: 2, title: 'Project', type: 'directory', hasChildren: true },
    { id: 9, title: 'Personal', type: 'directory', hasChildren: true },
    { id: 12, title: 'README.md', type: 'file', hasChildren: false },
  ],
  2: [
    {
      id: 3,
      title: 'Weekly Report',
      type: 'file',
      description: 'Summary of weekly activities and progress',
      hasChildren: false,
    },
    { id: 4, title: 'Budget', type: 'file', hasChildren: false },
    {
      id: 5,
      title: 'Presentations',
      type: 'directory',
      description: 'Quarterly and annual presentations',
      hasChildren: true,
    },
  ],
  5: [
    { id: 6, title: 'Q1 Review', type: 'file', hasChildren: false },
    { id: 7, title: 'Q2 Review', type: 'file', description: 'Second quarter performance review', hasChildren: false },
    { id: 8, title: 'Annual Summary', type: 'file', hasChildren: false },
  ],
  9: [
    { id: 10, title: 'Resume', type: 'file', description: 'Updated professional resume', hasChildren: false },
    { id: 11, title: 'Cover Letter', type: 'file', hasChildren: false },
  ],
  13: [
    { id: 14, title: '2025', type: 'directory', description: 'Photos from last year', hasChildren: true },
    { id: 22, title: '2026', type: 'directory', hasChildren: true },
  ],
  14: [
    { id: 15, title: 'Vacation', type: 'directory', hasChildren: true },
    {
      id: 19,
      title: 'Work Events',
      type: 'directory',
      description: 'Company events and gatherings',
      hasChildren: true,
    },
  ],
  15: [
    { id: 16, title: 'Beach 1', type: 'file', hasChildren: false },
    { id: 17, title: 'Beach 2', type: 'file', description: 'Beautiful sunset at the beach', hasChildren: false },
    { id: 18, title: 'Sunset', type: 'file', hasChildren: false },
  ],
  19: [
    { id: 20, title: 'Conference', type: 'file', hasChildren: false },
    { id: 21, title: 'Team Building', type: 'file', hasChildren: false },
  ],
  22: [{ id: 23, title: 'New Year', type: 'file', hasChildren: false }],
  24: [
    { id: 25, title: 'invoice.pdf', type: 'file', description: 'January invoice for services', hasChildren: false },
    { id: 26, title: 'setup.exe', type: 'file', hasChildren: false },
    { id: 27, title: 'Archives', type: 'directory', hasChildren: true },
  ],
  27: [
    {
      id: 28,
      title: 'backup-2025.zip',
      type: 'file',
      description: 'Full system backup from December 2025',
      hasChildren: false,
    },
    { id: 29, title: 'backup-2024.zip', type: 'file', hasChildren: false },
  ],
};

export async function loadLazyTreeItemChildren(parentId: number | string): Promise<LazyTreeItem[]> {
  console.debug(`Loading children for parentId: ${parentId}...`);

  await new Promise(resolve => setTimeout(resolve, 1000));

  return lazyTreeItemsChildrenMap[parentId] ?? [];
}