Migration to Nuxt v4 file structure and dependencies update

app/composables/useDatabase.ts

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+import { Database } from "bun:sqlite";
+import { BunSQLiteDatabase, drizzle } from "drizzle-orm/bun-sqlite";
+import * as schema from '../db/schema';
+
+let instance: BunSQLiteDatabase<typeof schema> & {
+    $client: Database;
+};
+export default function useDatabase()
+{
+    if(!instance)
+    {
+        const database = useRuntimeConfig().database;
+        const sqlite = new Database(database);
+        instance = drizzle({ client: sqlite, schema, /* logger: true */ });
+
+        instance.run("PRAGMA journal_mode = WAL;");
+        instance.run("PRAGMA foreign_keys = true;");
+        instance.run("PRAGMA optimize=0x10002;");
+    }
+
+    return instance;
+}

app/composables/useMarkdown.ts

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+import { unified, type Processor } from "unified";
+import type { Root } from 'hast';
+import RemarkParse from "remark-parse";
+
+import RemarkRehype from 'remark-rehype';
+import RemarkOfm from 'remark-ofm';
+import RemarkGfm from 'remark-gfm';
+import RemarkBreaks from 'remark-breaks';
+import RemarkFrontmatter from 'remark-frontmatter';
+import StripMarkdown from 'strip-markdown';
+import RemarkStringify from 'remark-stringify';
+
+interface Parser
+{
+    parse: (md: string) => Promise<Root>;
+    parseSync: (md: string) => Root;
+    text: (md: string) => string;
+}
+export default function useMarkdown(): Parser
+{
+    let processor: Processor, processorSync: Processor;
+
+    const parse = (markdown: string) => {
+        if (!processor) 
+        {
+            processor = unified().use([RemarkParse, RemarkGfm, RemarkOfm, RemarkBreaks, RemarkFrontmatter]);
+            processor.use(RemarkRehype);
+        }
+
+        const processed = processor.run(processor.parse(markdown)) as Promise<Root>;
+        return processed;
+    }
+
+    const parseSync = (markdown: string) => {
+        if (!processor) 
+        {
+            processor = unified().use([RemarkParse, RemarkGfm, RemarkOfm, RemarkBreaks, RemarkFrontmatter]);
+            processor.use(RemarkRehype);
+        }
+
+        const processed = processor.runSync(processor.parse(markdown)) as Root;
+        return processed;
+    }
+
+    const text = (markdown: string) => {
+        if (!processor) 
+        {
+            processor = unified().use([RemarkParse, RemarkGfm, RemarkOfm, RemarkBreaks, RemarkFrontmatter ]);
+            processor.use(StripMarkdown, { remove: [ 'comment', 'tag', 'callout' ] });
+            processor.use(RemarkStringify);
+        }
+
+        const processed = processor.processSync(markdown);
+        return String(processed);
+    }
+
+    return { parse, parseSync, text };
+}

app/composables/useShortcuts.ts

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+import { ref, computed } from 'vue'
+import type { ComputedRef, WatchSource } from 'vue'
+import { logicAnd, logicNot } from '@vueuse/math'
+import { useEventListener, useDebounceFn, createSharedComposable, useActiveElement } from '@vueuse/core'
+
+export interface ShortcutConfig {
+  handler: Function
+  usingInput?: string | boolean
+  whenever?: WatchSource<boolean>[]
+  prevent?: boolean
+}
+
+export interface ShortcutsConfig {
+  [key: string]: ShortcutConfig | Function
+}
+
+export interface ShortcutsOptions {
+  chainDelay?: number
+}
+
+interface Shortcut {
+  handler: Function
+  condition: ComputedRef<boolean>
+  chained: boolean
+  // KeyboardEvent attributes
+  key: string
+  ctrlKey: boolean
+  metaKey: boolean
+  shiftKey: boolean
+  altKey: boolean
+  // code?: string
+  // keyCode?: number
+  prevent?: boolean
+}
+
+const chainedShortcutRegex = /^[^-]+.*-.*[^-]+$/
+const combinedShortcutRegex = /^[^_]+.*_.*[^_]+$/
+
+export const useShortcuts = (config: ShortcutsConfig, options: ShortcutsOptions = {}) => {
+  const { macOS, usingInput } = _useShortcuts()
+
+  let shortcuts: Shortcut[] = []
+
+  const chainedInputs = ref<string[]>([])
+  const clearChainedInput = () => {
+    chainedInputs.value.splice(0, chainedInputs.value.length)
+  }
+  const debouncedClearChainedInput = useDebounceFn(clearChainedInput, options.chainDelay ?? 800)
+
+  const onKeyDown = (e: KeyboardEvent) => {
+    // Input autocomplete triggers a keydown event
+    if (!e.key) { return }
+
+    const alphabeticalKey = /^[a-z]{1}$/i.test(e.key)
+
+    let chainedKey
+    chainedInputs.value.push(e.key)
+    // try matching a chained shortcut
+    if (chainedInputs.value.length >= 2) {
+      chainedKey = chainedInputs.value.slice(-2).join('-')
+
+      for (const shortcut of shortcuts.filter(s => s.chained)) {
+        if (shortcut.key !== chainedKey) { continue }
+
+        if (shortcut.condition.value) {
+          e.stopPropagation
+          shortcut.prevent && e.preventDefault()
+          shortcut.handler()
+        }
+        clearChainedInput()
+        return
+      }
+    }
+
+    // try matching a standard shortcut
+    for (const shortcut of shortcuts.filter(s => !s.chained)) {
+      if (e.key.toLowerCase() !== shortcut.key) { continue }
+      if (e.metaKey !== shortcut.metaKey) { continue }
+      if (e.ctrlKey !== shortcut.ctrlKey) { continue }
+      // shift modifier is only checked in combination with alphabetical keys
+      // (shift with non-alphabetical keys would change the key)
+      if (alphabeticalKey && e.shiftKey !== shortcut.shiftKey) { continue }
+      // alt modifier changes the combined key anyways
+      // if (e.altKey !== shortcut.altKey) { continue }
+
+      if (shortcut.condition.value) {
+        e.preventDefault()
+        shortcut.handler()
+      }
+      clearChainedInput()
+      return
+    }
+
+    debouncedClearChainedInput()
+  }
+
+  // Map config to full detailled shortcuts
+  shortcuts = Object.entries(config).map(([key, shortcutConfig]) => {
+    if (!shortcutConfig) {
+      return null
+    }
+
+    // Parse key and modifiers
+    let shortcut: Partial<Shortcut>
+
+    if (key.includes('-') && key !== '-' && !key.match(chainedShortcutRegex)?.length) {
+      console.trace(`[Shortcut] Invalid key: "${key}"`)
+    }
+
+    if (key.includes('_') && key !== '_' && !key.match(combinedShortcutRegex)?.length) {
+      console.trace(`[Shortcut] Invalid key: "${key}"`)
+    }
+
+    const chained = key.includes('-') && key !== '-'
+    if (chained) {
+      shortcut = {
+        key: key.toLowerCase(),
+        metaKey: false,
+        ctrlKey: false,
+        shiftKey: false,
+        altKey: false
+      }
+    } else {
+      const keySplit = key.toLowerCase().split('_').map(k => k)
+      shortcut = {
+        key: keySplit.filter(k => !['meta', 'ctrl', 'shift', 'alt'].includes(k)).join('_'),
+        metaKey: keySplit.includes('meta'),
+        ctrlKey: keySplit.includes('ctrl'),
+        shiftKey: keySplit.includes('shift'),
+        altKey: keySplit.includes('alt')
+      }
+    }
+    shortcut.chained = chained
+
+    // Convert Meta to Ctrl for non-MacOS
+    if (!macOS.value && shortcut.metaKey && !shortcut.ctrlKey) {
+      shortcut.metaKey = false
+      shortcut.ctrlKey = true
+    }
+
+    // Retrieve handler function
+    if (typeof shortcutConfig === 'function') {
+      shortcut.handler = shortcutConfig
+    } else if (typeof shortcutConfig === 'object') {
+      shortcut = { ...shortcut, handler: shortcutConfig.handler, prevent: shortcutConfig.prevent }
+    }
+
+    if (!shortcut.handler) {
+      console.trace('[Shortcut] Invalid value')
+      return null
+    }
+
+    // Create shortcut computed
+    const conditions: ComputedRef<boolean>[] = []
+    if (!(shortcutConfig as ShortcutConfig).usingInput) {
+      conditions.push(logicNot(usingInput))
+    } else if (typeof (shortcutConfig as ShortcutConfig).usingInput === 'string') {
+      conditions.push(computed(() => usingInput.value === (shortcutConfig as ShortcutConfig).usingInput))
+    }
+    shortcut.condition = logicAnd(...conditions, ...((shortcutConfig as ShortcutConfig).whenever || []))
+
+    return shortcut as Shortcut
+  }).filter(Boolean) as Shortcut[]
+
+  useEventListener('keydown', onKeyDown)
+}
+
+export const _useShortcuts = () => {
+  const macOS = computed(() => process.client && navigator && navigator.userAgent && navigator.userAgent.match(/Macintosh;/))
+
+  const metaSymbol = ref(' ')
+
+  const activeElement = useActiveElement()
+  const usingInput = computed(() => {
+    const usingInput = !!(activeElement.value?.tagName === 'INPUT' || activeElement.value?.tagName === 'TEXTAREA' || activeElement.value?.contentEditable === 'true')
+
+    if (usingInput) {
+      return ((activeElement.value as any)?.name as string) || true
+    }
+
+    return false
+  })
+
+  tryOnMounted(() => {
+    metaSymbol.value = macOS.value ? '⌘' : 'Ctrl'
+  })
+
+  return {
+    macOS,
+    metaSymbol,
+    activeElement,
+    usingInput
+  }
+}

app/composables/useUserSession.ts

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+import type { UserSession, UserSessionComposable } from '~/types/auth'
+
+const useSessionState = () => useState<UserSession>('nuxt-session', () => ({}))
+const useAuthReadyState = () => useState('nuxt-auth-ready', () => false)
+
+/**
+ * Composable to get back the user session and utils around it.
+ */
+export function useUserSession(): UserSessionComposable {
+  const sessionState = useSessionState()
+  const authReadyState = useAuthReadyState()
+  return {
+    ready: computed(() => authReadyState.value),
+    loggedIn: computed(() => Boolean(sessionState.value.user)),
+    user: computed(() => sessionState.value.user ?? null),
+    session: sessionState,
+    fetch,
+    clear,
+  }
+}
+
+async function fetch(): Promise<boolean> {
+  const authReadyState = useAuthReadyState()
+  const sessionState = useSessionState()
+  const loggedIn = Boolean(sessionState.value.user)
+  sessionState.value = await useRequestFetch()('/api/auth/session').catch(() => ({}))
+  if (!authReadyState.value)
+  {
+    authReadyState.value = true
+  }
+  return loggedIn !== Boolean(sessionState.value.user);
+}
+
+async function clear() {
+  await useRequestFetch()('/api/auth/session', { method: 'DELETE' })
+  useSessionState().value = {}
+  useRouter().go(0)
+}