51 lines
1.9 KiB
TypeScript
51 lines
1.9 KiB
TypeScript
import { DatabaseSync } from "node:sqlite"
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import path from 'node:path'
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import config from "../config.ts"
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import { SQLInputValue } from "node:sqlite";
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export default class UserChatLinker {
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static database: DatabaseSync = this.init()
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private static init(): DatabaseSync {
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const db: DatabaseSync = new DatabaseSync(path.join(config.data_path, 'UserChatLinker.db'))
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db.exec(`
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CREATE TABLE IF NOT EXISTS UserChatLinker (
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/* 序号 */ count INTEGER PRIMARY KEY AUTOINCREMENT,
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/* 用戶 ID */ user_id TEXT NOT NULL,
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/* Chat ID */ chat_id TEXT NOT NULL
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);
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`)
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return db
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}
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/**
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* 對用戶和對話建立關聯
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* 自動檢測是否已關聯, 保證不會重複
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*/
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static linkUserAndChat(userId: string, chatId: string) {
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if (!this.checkUserIsLinkedToChat(userId, chatId))
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this.database.prepare(`INSERT INTO UserChatLinker (
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user_id,
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chat_id
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) VALUES (?, ?);`).run(
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userId,
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chatId
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)
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}
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static unlinkUserAndChat(userId: string, chatId: string) {
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this.database.prepare(`DELETE FROM UserChatLinker WHERE user_id = ? AND chat_id = ?`).run(userId, chatId)
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}
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static checkUserIsLinkedToChat(userId: string, chatId: string) {
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return this.findAllByCondition('user_id = ? AND chat_id = ?', userId, chatId).length != 0
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}
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static getUserChats(userId: string) {
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return this.findAllByCondition('user_id = ?', userId).map((v) => v.chat_id) as string[]
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}
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static getChatMembers(chatId: string) {
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return this.findAllByCondition('chat_id = ?', chatId).map((v) => v.user_id) as string[]
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}
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protected static findAllByCondition(condition: string, ...args: SQLInputValue[]) {
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return this.database.prepare(`SELECT * FROM UserChatLinker WHERE ${condition}`).all(...args)
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}
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}
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