import { http } from "./http";
import type { Chat, ChatDetail, ChatMember, ChatMemberRole, ChatType, DiscoverChat, Message, MessageReaction, MessageType } from "../chat/types";
import axios from "axios";

export interface ChatNotificationSettings {
  chat_id: number;
  user_id: number;
  muted: boolean;
}

export async function getChats(query?: string, archived = false): Promise<Chat[]> {
  const { data } = await http.get<Chat[]>("/chats", {
    params: {
      ...(query?.trim() ? { query: query.trim() } : {}),
      ...(archived ? { archived: true } : {})
    }
  });
  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,
    is_public: false,
    member_ids: memberIds
  });
  return data;
}

export async function createPublicChat(type: "group" | "channel", title: string, handle: string, description?: string): Promise<Chat> {
  const { data } = await http.post<Chat>("/chats", {
    type,
    title,
    handle,
    description,
    is_public: true,
    member_ids: []
  });
  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 searchMessages(query: string, chatId?: number): Promise<Message[]> {
  const { data } = await http.get<Message[]>("/messages/search", {
    params: {
      query,
      chat_id: chatId
    }
  });
  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 async function sendMessageWithClientId(
  chatId: number,
  text: string,
  type: MessageType,
  clientMessageId: string,
  replyToMessageId?: number
): Promise<Message> {
  const { data } = await http.post<Message>("/messages", {
    chat_id: chatId,
    text,
    type,
    client_message_id: clientMessageId,
    reply_to_message_id: replyToMessageId
  });
  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,
  retries = 2
): Promise<void> {
  let attempt = 0;
  while (attempt <= retries) {
    try {
      await axios.put(uploadUrl, file, {
        headers: requiredHeaders,
        onUploadProgress: (progressEvent) => {
          if (!onProgress || !progressEvent.total) {
            return;
          }
          onProgress(Math.round((progressEvent.loaded * 100) / progressEvent.total));
        }
      });
      return;
    } catch (error) {
      const status = axios.isAxiosError(error) ? error.response?.status : undefined;
      const retryable = status === undefined || status >= 500;
      if (!retryable || attempt >= retries) {
        throw error;
      }
      attempt += 1;
      await new Promise((resolve) => window.setTimeout(resolve, 400 * attempt));
    }
  }
}

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
  });
}

export async function updateMessageStatus(
  chatId: number,
  messageId: number,
  status: "message_delivered" | "message_read"
): Promise<void> {
  await http.post("/messages/status", {
    chat_id: chatId,
    message_id: messageId,
    status
  });
}

export async function forwardMessage(messageId: number, targetChatId: number): Promise<Message> {
  const { data } = await http.post<Message>(`/messages/${messageId}/forward`, {
    target_chat_id: targetChatId
  });
  return data;
}

export async function listMessageReactions(messageId: number): Promise<MessageReaction[]> {
  const { data } = await http.get<MessageReaction[]>(`/messages/${messageId}/reactions`);
  return data;
}

export async function toggleMessageReaction(messageId: number, emoji: string): Promise<MessageReaction[]> {
  const { data } = await http.post<MessageReaction[]>(`/messages/${messageId}/reactions/toggle`, { emoji });
  return data;
}

export async function pinMessage(chatId: number, messageId: number | null): Promise<Chat> {
  const { data } = await http.post<Chat>(`/chats/${chatId}/pin`, {
    message_id: messageId
  });
  return data;
}

export async function deleteChat(chatId: number, forAll: boolean): Promise<void> {
  await http.delete(`/chats/${chatId}`, { params: { for_all: forAll } });
}

export async function clearChat(chatId: number): Promise<void> {
  await http.post(`/chats/${chatId}/clear`);
}

export async function archiveChat(chatId: number): Promise<Chat> {
  const { data } = await http.post<Chat>(`/chats/${chatId}/archive`);
  return data;
}

export async function unarchiveChat(chatId: number): Promise<Chat> {
  const { data } = await http.post<Chat>(`/chats/${chatId}/unarchive`);
  return data;
}

export async function pinChat(chatId: number): Promise<Chat> {
  const { data } = await http.post<Chat>(`/chats/${chatId}/pin-chat`);
  return data;
}

export async function unpinChat(chatId: number): Promise<Chat> {
  const { data } = await http.post<Chat>(`/chats/${chatId}/unpin-chat`);
  return data;
}

export async function deleteMessage(messageId: number, forAll = false): Promise<void> {
  await http.delete(`/messages/${messageId}`, { params: { for_all: forAll } });
}

export async function discoverChats(query?: string): Promise<DiscoverChat[]> {
  const { data } = await http.get<DiscoverChat[]>("/chats/discover", {
    params: query?.trim() ? { query: query.trim() } : undefined
  });
  return data;
}

export async function joinChat(chatId: number): Promise<Chat> {
  const { data } = await http.post<Chat>(`/chats/${chatId}/join`);
  return data;
}

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

export async function getChatDetail(chatId: number): Promise<ChatDetail> {
  const { data } = await http.get<ChatDetail>(`/chats/${chatId}`);
  return data;
}

export async function listChatMembers(chatId: number): Promise<ChatMember[]> {
  const { data } = await http.get<ChatMember[]>(`/chats/${chatId}/members`);
  return data;
}

export async function updateChatTitle(chatId: number, title: string): Promise<Chat> {
  const { data } = await http.patch<Chat>(`/chats/${chatId}/title`, { title });
  return data;
}

export async function addChatMember(chatId: number, userId: number): Promise<ChatMember> {
  const { data } = await http.post<ChatMember>(`/chats/${chatId}/members`, { user_id: userId });
  return data;
}

export async function updateChatMemberRole(chatId: number, userId: number, role: ChatMemberRole): Promise<ChatMember> {
  const { data } = await http.patch<ChatMember>(`/chats/${chatId}/members/${userId}/role`, { role });
  return data;
}

export async function removeChatMember(chatId: number, userId: number): Promise<void> {
  await http.delete(`/chats/${chatId}/members/${userId}`);
}

export async function leaveChat(chatId: number): Promise<void> {
  await http.post(`/chats/${chatId}/leave`);
}

export async function getChatNotificationSettings(chatId: number): Promise<ChatNotificationSettings> {
  const { data } = await http.get<ChatNotificationSettings>(`/chats/${chatId}/notifications`);
  return data;
}

export async function updateChatNotificationSettings(chatId: number, muted: boolean): Promise<ChatNotificationSettings> {
  const { data } = await http.put<ChatNotificationSettings>(`/chats/${chatId}/notifications`, { muted });
  return data;
}