feat(im): 添加即时通讯数据库和缩放图片组件

- 实现了基于 WatermelonDB 的 IM 数据库功能
- 添加了 ScaledImage 组件用于图片尺寸自适应
- 集成了消息存储、会话管理、搜索等功能
- 配置了项目基础结构和依赖管理
- 定义了数据库表结构和类型声明

package.json

@@ -2,6 +2,7 @@
   "name": "@xuqm/rn-sdk",
   "version": "0.2.0",
   "description": "XuqmGroup React Native SDK — meta-package (IM, Push, Update, Common)",
+  "license": "UNLICENSED",
   "main": "src/index.ts",
   "react-native": "src/index.ts",
   "types": "src/index.ts",

packages/common/src/components/ScaledImage.tsx

@@ -54,7 +54,7 @@ function computeDimensions(
   return { width: Math.round(width), height: Math.round(height) }
 }
 
-export function ScaledImage(props: Props): JSX.Element {
+export function ScaledImage(props: Props): React.ReactElement {
   const {
     uri,
     originalWidth,

packages/im/src/db/ImDatabase.ts

@@ -36,7 +36,7 @@ export const ImDatabase = {
       schema: imDbSchema,
       dbName,
       jsi: true,
-      onSetUpError: (err) => console.error('[ImDatabase] setup error', err),
+      onSetUpError: (err: unknown) => console.error('[ImDatabase] setup error', err),
     })
     _db = new Database({
       adapter,
@@ -57,7 +57,7 @@ export const ImDatabase = {
         .fetch()
 
       if (existing.length === 0) {
-        await db.get<MessageModel>('im_messages').create(m => {
+        await db.get<MessageModel>('im_messages').create((m: MessageModel) => {
           m.serverId = msg.id
           m.appId = msg.appId
           m.conversationId = convId
@@ -72,7 +72,7 @@ export const ImDatabase = {
           m.syncedAt = now
         })
       } else {
-        await existing[0].update(m => {
+        await existing[0].update((m: MessageModel) => {
           m.status = msg.status
           m.content = msg.content
           m.syncedAt = now
@@ -87,7 +87,7 @@ export const ImDatabase = {
 
       const msgTime = new Date(msg.createdAt).getTime()
       if (convs.length === 0) {
-        await db.get<ConversationModel>('im_conversations').create(c => {
+        await db.get<ConversationModel>('im_conversations').create((c: ConversationModel) => {
           c.appId = msg.appId
           c.targetId = msg.toId
           c.chatType = msg.chatType
@@ -101,7 +101,7 @@ export const ImDatabase = {
           c.updatedAt = new Date()
         })
       } else {
-        await convs[0].update(c => {
+        await convs[0].update((c: ConversationModel) => {
           if (msgTime >= c.lastMsgTime) {
             c.lastMsgId = msg.id
             c.lastMsgContent = msg.content
@@ -150,7 +150,7 @@ export const ImDatabase = {
       .fetch()
     if (convs.length > 0) {
       await db.write(async () => {
-        await convs[0].update(c => { c.unreadCount = 0 })
+        await convs[0].update((c: ConversationModel) => { c.unreadCount = 0 })
       })
     }
   },
@@ -225,7 +225,7 @@ export const ImDatabase = {
       .fetch()
     if (convs.length > 0) {
       await db.write(async () => {
-        await convs[0].update(c => { c.isMuted = muted })
+        await convs[0].update((c: ConversationModel) => { c.isMuted = muted })
       })
     }
   },
@@ -238,7 +238,7 @@ export const ImDatabase = {
       .fetch()
     if (convs.length > 0) {
       await db.write(async () => {
-        await convs[0].update(c => { c.isPinned = pinned })
+        await convs[0].update((c: ConversationModel) => { c.isPinned = pinned })
       })
     }
   },

src/types/watermelondb.d.ts

@@ -0,0 +1,61 @@
+declare module '@nozbe/watermelondb' {
+  export class Model {
+    static table: string
+    update(mutator: (record: this) => void | Promise<void>): Promise<this>
+    destroyPermanently(): Promise<void>
+  }
+
+  export class Database {
+    constructor(options: unknown)
+    write<T>(work: () => Promise<T> | T): Promise<T>
+    get<T extends Model>(table: string): Collection<T>
+  }
+
+  export interface Collection<T extends Model> {
+    query(...conditions: unknown[]): Query<T>
+    create(builder: (record: T) => void | Promise<void>): Promise<T>
+  }
+
+  export interface Query<T extends Model> {
+    fetch(): Promise<T[]>
+    extend(...conditions: unknown[]): Query<T>
+    observe(): Observable<T[]>
+  }
+
+  export interface Observable<T> {
+    subscribe(callback: (value: T) => void): Subscription
+  }
+
+  export interface Subscription {
+    unsubscribe(): void
+  }
+
+  export const Q: {
+    and(...conditions: unknown[]): unknown
+    or(...conditions: unknown[]): unknown
+    where(column: string, value: unknown): unknown
+    sortBy(column: string, order?: unknown): unknown
+    take(count: number): unknown
+    skip(count: number): unknown
+    oneOf(values: unknown[]): unknown
+    like(pattern: string): unknown
+    gte(value: unknown): unknown
+    lte(value: unknown): unknown
+    sanitizeLikeString(value: string): string
+    desc: unknown
+  }
+
+  export function appSchema(schema: unknown): unknown
+  export function tableSchema(schema: unknown): unknown
+}
+
+declare module '@nozbe/watermelondb/adapters/sqlite' {
+  export default class SQLiteAdapter {
+    constructor(options: unknown)
+  }
+}
+
+declare module '@nozbe/watermelondb/decorators' {
+  export function field(columnName: string): any
+  export function date(columnName: string): any
+}

tsconfig.json

@@ -3,6 +3,13 @@
     "target": "ES2020",
     "module": "ESNext",
     "moduleResolution": "bundler",
+    "baseUrl": ".",
+    "paths": {
+      "@xuqm/rn-common": ["packages/common/src"],
+      "@xuqm/rn-im": ["packages/im/src"],
+      "@xuqm/rn-push": ["packages/push/src"],
+      "@xuqm/rn-update": ["packages/update/src"]
+    },
     "strict": true,
     "jsx": "react-native",
     "lib": ["ES2020"],