118 lines
2.8 KiB
TypeScript
118 lines
2.8 KiB
TypeScript
import { Database } from 'bun:sqlite'
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import { createEmptyBook, type TeachingBook } from '../src/domain/teachingDesign'
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export interface BookSummary {
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id: string
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name: string
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updatedAt: string
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lessonCount: number
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}
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export interface BookRecord {
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id: string
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name: string
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updatedAt: string
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data: TeachingBook
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}
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export interface BookMeta {
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id: string
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name: string
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updatedAt: string
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}
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interface BookRow {
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id: string
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name: string
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data: string
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updated_at: string
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}
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const SCHEMA = `
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CREATE TABLE IF NOT EXISTS books (
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id TEXT PRIMARY KEY,
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name TEXT NOT NULL,
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data TEXT NOT NULL,
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created_at TEXT NOT NULL,
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updated_at TEXT NOT NULL
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)
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`
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export function openDb(path: string): Database {
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const db = new Database(path)
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db.run(SCHEMA)
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return db
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}
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export function listBooks(db: Database): BookSummary[] {
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const rows = db
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.query<BookRow, []>('SELECT id, name, data, updated_at FROM books ORDER BY updated_at DESC')
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.all()
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return rows.map((row) => ({
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id: row.id,
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name: row.name,
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updatedAt: row.updated_at,
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lessonCount: (JSON.parse(row.data) as TeachingBook).designs.length,
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}))
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}
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export function createBook(db: Database, name: string): BookRecord {
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const id = crypto.randomUUID()
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const now = new Date().toISOString()
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const data = createEmptyBook()
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data.updatedAt = now
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db.run('INSERT INTO books (id, name, data, created_at, updated_at) VALUES (?, ?, ?, ?, ?)', [
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id,
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name,
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JSON.stringify(data),
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now,
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now,
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])
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return { id, name, updatedAt: now, data }
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}
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export function getBook(db: Database, id: string): BookRecord | null {
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const row = db
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.query<BookRow, [string]>('SELECT id, name, data, updated_at FROM books WHERE id = ?')
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.get(id)
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if (!row) return null
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return {
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id: row.id,
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name: row.name,
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updatedAt: row.updated_at,
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data: JSON.parse(row.data) as TeachingBook,
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}
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}
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export function saveBookData(db: Database, id: string, data: TeachingBook): BookMeta | null {
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const existing = db
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.query<{ name: string }, [string]>('SELECT name FROM books WHERE id = ?')
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.get(id)
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if (!existing) return null
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const now = new Date().toISOString()
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db.run('UPDATE books SET data = ?, updated_at = ? WHERE id = ?', [JSON.stringify(data), now, id])
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return { id, name: existing.name, updatedAt: now }
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}
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export function renameBook(db: Database, id: string, name: string): BookMeta | null {
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const existing = db
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.query<{ updated_at: string }, [string]>('SELECT updated_at FROM books WHERE id = ?')
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.get(id)
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if (!existing) return null
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db.run('UPDATE books SET name = ? WHERE id = ?', [name, id])
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return { id, name, updatedAt: existing.updated_at }
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}
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export function deleteBook(db: Database, id: string): boolean {
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const result = db.run('DELETE FROM books WHERE id = ?', [id])
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return result.changes > 0
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}
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