feat: 迁移数据库至SQLite并适配嵌入式环境

- 添加SQLite数据库文件及数据目录的忽略规则
- 将数据库连接地址更新为本地SQLite数据库文件路径
- 将数据库从 PostgreSQL 迁移至 SQLite，更新依赖、Drizzle 方言及数据类型映射，确保嵌入式环境兼容性并保持应用层代码不变。
- 将数据库方言从 PostgreSQL 更改为 SQLite。
- 将数据库依赖从 postgres 替换为 better-sqlite3，并添加 better-sqlite3 的类型定义。
- 修改数据库连接字符串验证规则，从URL格式验证改为非空字符串验证。
- 将数据库连接从 PostgreSQL 切换为 Better-SQLite3，并支持创建目录和内存数据库。
- 将 todo 表的 completed 字段从 PostgreSQL 的 boolean 类型改为 SQLite 的 boolean 模式整数类型。
- 将字段定义从 PostgreSQL 适配改为 SQLite 适配，使用文本类型 ID 和时间戳整数类型，并统一使用 UUIDv7 和当前时间作为默认值。
- 添加 better-sqlite3 及其类型定义，并引入相关依赖以支持其功能
- 添加 better-sqlite3 依赖并移除 postgres 依赖

apps/server/src/env.ts

@@ -3,7 +3,7 @@ import { z } from 'zod'
 
 export const env = createEnv({
   server: {
-    DATABASE_URL: z.url(),
+    DATABASE_URL: z.string().min(1),
   },
   clientPrefix: 'VITE_',
   client: {

apps/server/src/server/db/index.ts

@@ -1,15 +1,18 @@
-import { drizzle } from 'drizzle-orm/postgres-js'
+import { mkdirSync } from 'node:fs'
+import { dirname } from 'node:path'
+import Database from 'better-sqlite3'
+import { drizzle } from 'drizzle-orm/better-sqlite3'
 import { env } from '@/env'
 import * as schema from '@/server/db/schema'
 
-export const createDB = () =>
-  drizzle({
-    connection: {
-      url: env.DATABASE_URL,
-      prepare: true,
-    },
-    schema,
-  })
+export const createDB = () => {
+  const dbPath = env.DATABASE_URL
+  if (dbPath !== ':memory:') {
+    mkdirSync(dirname(dbPath), { recursive: true })
+  }
+  const sqlite = new Database(dbPath)
+  return drizzle(sqlite, { schema })
+}
 
 export type DB = ReturnType<typeof createDB>
 

apps/server/src/server/db/schema/todo.ts

@@ -1,8 +1,8 @@
-import { boolean, pgTable, text } from 'drizzle-orm/pg-core'
+import { integer, sqliteTable, text } from 'drizzle-orm/sqlite-core'
 import { generatedFields } from './utils/field'
 
-export const todoTable = pgTable('todo', {
+export const todoTable = sqliteTable('todo', {
   ...generatedFields,
   title: text('title').notNull(),
-  completed: boolean('completed').notNull().default(false),
+  completed: integer('completed', { mode: 'boolean' }).notNull().default(false),
 })

apps/server/src/server/db/schema/utils/field.ts

@@ -1,37 +1,25 @@
-import { sql } from 'drizzle-orm'
-import { timestamp, uuid } from 'drizzle-orm/pg-core'
+import { integer, text } from 'drizzle-orm/sqlite-core'
 import { v7 as uuidv7 } from 'uuid'
 
 // id
 
-export const id = (name: string) => uuid(name)
-export const pk = (name: string, strategy?: 'native' | 'extension') => {
-  switch (strategy) {
-    // PG 18+
-    case 'native':
-      return id(name).primaryKey().default(sql`uuidv7()`)
-
-    // PG 13+ with extension
-    case 'extension':
-      return id(name).primaryKey().default(sql`uuid_generate_v7()`)
-
-    // Any PG version
-    default:
-      return id(name)
-        .primaryKey()
-        .$defaultFn(() => uuidv7())
-  }
-}
+export const id = (name: string) => text(name)
+export const pk = (name: string) =>
+  id(name)
+    .primaryKey()
+    .$defaultFn(() => uuidv7())
 
 // timestamp
 
 export const createdAt = (name = 'created_at') =>
-  timestamp(name, { withTimezone: true }).notNull().defaultNow()
+  integer(name, { mode: 'timestamp_ms' })
+    .notNull()
+    .$defaultFn(() => new Date())
 
 export const updatedAt = (name = 'updated_at') =>
-  timestamp(name, { withTimezone: true })
+  integer(name, { mode: 'timestamp_ms' })
     .notNull()
-    .defaultNow()
+    .$defaultFn(() => new Date())
     .$onUpdateFn(() => new Date())
 
 // generated fields