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class ContactFinder { |
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#db; |
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#chatToFind; |
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#dbName = "model-storage"; |
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#chatsCol = "chat"; |
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#contactCol = "contact"; |
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#groupCol = "participant"; |
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constructor(chatGroupName) { |
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this.#chatToFind = chatGroupName; |
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} |
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async openConnection() { |
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if (!this.#db) { |
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const dbName = this.#dbName; |
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this.#db = await new Promise((resolve, reject) => { |
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let request = indexedDB.open(dbName); |
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request.onerror = (event) => { |
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reject(event); |
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}; |
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request.onsuccess = (event) => { |
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resolve(event.target.result); |
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}; |
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}); |
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} |
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return this.#db; |
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} |
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async #promisifyCol(collection, query, count) { |
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const db = await this.openConnection(); |
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return new Promise((resolve, reject) => { |
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const request = db.transaction(collection).objectStore(collection).getAll(query, count); |
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request.onerror = (event) => { |
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reject(event); |
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}; |
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request.onsuccess = (event) => { |
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resolve(event.target.result); |
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}; |
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}); |
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} |
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async #getChats() { |
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const allChats = await this.#promisifyCol(this.#chatsCol); |
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const chatToFind = this.#chatToFind; |
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return allChats.filter((chat) => { |
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return chat.name && chat.name.includes(chatToFind); |
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}); |
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} |
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async #getGroups() { |
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const chats = (await this.#getChats()).map((chat) => chat.id); |
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const allGroups = await this.#promisifyCol(this.#groupCol); |
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return allGroups.filter((group) => { |
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return group.groupId && chats.includes(group.groupId); |
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}); |
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} |
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async #getGroupParticipants() { |
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const groups = await this.#getGroups(); |
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const map = new Map(); |
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groups.forEach((group) => { |
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group.participants.forEach((par) => { |
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const num = par.replace("@c.us", ""); |
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map.set(num, num); |
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}); |
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}); |
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return map; |
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} |
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async #getContacts() { |
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return this.#promisifyCol(this.#contactCol); |
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} |
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async getGroupMembers() { |
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const members = await this.#getGroupParticipants(); |
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const contacts = await this.#getContacts(); |
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contacts.forEach((contact) => { |
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var num; |
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if (contact.phoneNumber) { |
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num = contact.phoneNumber.split("@")[0]; |
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} else if (contact.id) { |
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num = contact.id.split("@")[0]; |
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} |
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if (num && members.get(num)) { |
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members.set(num, { |
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phoneNum: num, |
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name: contact.name, |
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pushname: contact.pushname, |
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}); |
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} |
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}); |
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return members; |
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} |
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async downloadMembersAsCSV() { |
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const members = await this.getGroupMembers(); |
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let csvContent = "data:text/csv;charset=utf-8,"; |
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for (const [key, value] of members.entries()) { |
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const values = [value.phoneNum]; |
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if (value.name) values.push(value.name); |
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if (value.pushname) values.push(value.pushname); |
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let row = values.join(","); |
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csvContent += row + "\r\n"; |
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} |
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var link = document.createElement("a"); |
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link.setAttribute("href", encodeURI(csvContent)); |
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link.setAttribute("download", "my_data.csv"); |
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document.body.appendChild(link); // Required for FF |
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link.click(); |
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} |
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} |
@ChaT0n Create a bookmark with any name and enter this whole code in url
Open the whats web now and click on this bookmark. It will ask for the group name, put the exact group name you want to export contacts for education purpose. bookmark will prompt you to save the csv file.