import { http } from "./http";
import type { Chat, ChatType, Message, MessageType } from "../chat/types";
import axios from "axios";

export async function getChats(): Promise<Chat[]> {
  const { data } = await http.get<Chat[]>("/chats");
  return data;
}

export async function createPrivateChat(memberId: number): Promise<Chat> {
  return createChat("private", null, [memberId]);
}

export async function createChat(type: ChatType, title: string | null, memberIds: number[] = []): Promise<Chat> {
  const { data } = await http.post<Chat>("/chats", {
    type,
    title,
    member_ids: memberIds
  });
  return data;
}

export async function getMessages(chatId: number, beforeId?: number): Promise<Message[]> {
  const { data } = await http.get<Message[]>(`/messages/${chatId}`, {
    params: {
      limit: 50,
      before_id: beforeId
    }
  });
  return data;
}

export async function sendMessage(chatId: number, text: string, type: MessageType = "text"): Promise<Message> {
  const { data } = await http.post<Message>("/messages", { chat_id: chatId, text, type });
  return data;
}

export interface UploadUrlResponse {
  upload_url: string;
  file_url: string;
  object_key: string;
  expires_in: number;
  required_headers: Record<string, string>;
}

export async function requestUploadUrl(file: File): Promise<UploadUrlResponse> {
  const { data } = await http.post<UploadUrlResponse>("/media/upload-url", {
    file_name: file.name,
    file_type: file.type || "application/octet-stream",
    file_size: file.size
  });
  return data;
}

export async function uploadToPresignedUrl(
  uploadUrl: string,
  requiredHeaders: Record<string, string>,
  file: File,
  onProgress?: (percent: number) => void
): Promise<void> {
  await axios.put(uploadUrl, file, {
    headers: requiredHeaders,
    onUploadProgress: (progressEvent) => {
      if (!onProgress || !progressEvent.total) {
        return;
      }
      onProgress(Math.round((progressEvent.loaded * 100) / progressEvent.total));
    }
  });
}

export async function attachFile(messageId: number, fileUrl: string, fileType: string, fileSize: number): Promise<void> {
  await http.post("/media/attachments", {
    message_id: messageId,
    file_url: fileUrl,
    file_type: fileType,
    file_size: fileSize
  });
}