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import {useMutation, useQuery, useQueryClient} from '@tanstack/react-query'
import {useSession} from 'state/session'
import {useDmServiceUrlStorage} from '#/screens/Messages/Temp/useDmServiceUrlStorage'
import * as TempDmChatDefs from '#/temp/dm/defs'
import * as TempDmChatGetChat from '#/temp/dm/getChat'
import * as TempDmChatGetChatLog from '#/temp/dm/getChatLog'
import * as TempDmChatGetChatMessages from '#/temp/dm/getChatMessages'
/**
* TEMPORARY, PLEASE DO NOT JUDGE ME REACT QUERY OVERLORDS 🙏
* (and do not try this at home)
*/
function createHeaders(did: string) {
return {
Authorization: did,
}
}
type Chat = {
chatId: string
messages: TempDmChatGetChatMessages.OutputSchema['messages']
lastCursor?: string
lastRev?: string
}
export function useChat(chatId: string) {
const queryClient = useQueryClient()
const {serviceUrl} = useDmServiceUrlStorage()
const {currentAccount} = useSession()
const did = currentAccount?.did ?? ''
return useQuery({
queryKey: ['chat', chatId],
queryFn: async () => {
const currentChat = queryClient.getQueryData(['chat', chatId])
if (currentChat) {
return currentChat as Chat
}
const messagesResponse = await fetch(
`${serviceUrl}/xrpc/temp.dm.getChatMessages?chatId=${chatId}`,
{
headers: createHeaders(did),
},
)
if (!messagesResponse.ok) throw new Error('Failed to fetch messages')
const messagesJson =
(await messagesResponse.json()) as TempDmChatGetChatMessages.OutputSchema
const chatResponse = await fetch(
`${serviceUrl}/xrpc/temp.dm.getChat?chatId=${chatId}`,
{
headers: createHeaders(did),
},
)
if (!chatResponse.ok) throw new Error('Failed to fetch chat')
const chatJson =
(await chatResponse.json()) as TempDmChatGetChat.OutputSchema
const newChat = {
chatId,
messages: messagesJson.messages,
lastCursor: messagesJson.cursor,
lastRev: chatJson.chat.rev,
} satisfies Chat
queryClient.setQueryData(['chat', chatId], newChat)
return newChat
},
})
}
interface SendMessageMutationVariables {
message: string
tempId: string
}
export function createTempId() {
return Math.random().toString(36).substring(7).toString()
}
export function useSendMessageMutation(chatId: string) {
const queryClient = useQueryClient()
const {serviceUrl} = useDmServiceUrlStorage()
const {currentAccount} = useSession()
const did = currentAccount?.did ?? ''
return useMutation<
TempDmChatDefs.Message,
Error,
SendMessageMutationVariables,
unknown
>({
// eslint-disable-next-line @typescript-eslint/no-unused-vars
mutationFn: async ({message, tempId}) => {
const response = await fetch(
`${serviceUrl}/xrpc/temp.dm.sendMessage?chatId=${chatId}`,
{
method: 'POST',
headers: {
...createHeaders(did),
'Content-Type': 'application/json',
},
body: JSON.stringify({
chatId,
message: {
text: message,
},
}),
},
)
if (!response.ok) throw new Error('Failed to send message')
return response.json()
},
onMutate: async variables => {
queryClient.setQueryData(['chat', chatId], (prev: Chat) => {
return {
...prev,
messages: [
{
id: variables.tempId,
text: variables.message,
},
...prev.messages,
],
}
})
},
onSuccess: (result, variables) => {
queryClient.setQueryData(['chat', chatId], (prev: Chat) => {
return {
...prev,
messages: prev.messages.map(m =>
m.id === variables.tempId
? {
...m,
id: result.id,
}
: m,
),
}
})
},
onError: (_, variables) => {
console.log(_)
queryClient.setQueryData(['chat', chatId], (prev: Chat) => ({
...prev,
messages: prev.messages.filter(m => m.id !== variables.tempId),
}))
},
})
}
export function useChatLogQuery() {
const queryClient = useQueryClient()
const {serviceUrl} = useDmServiceUrlStorage()
const {currentAccount} = useSession()
const did = currentAccount?.did ?? ''
return useQuery({
queryKey: ['chatLog'],
queryFn: async () => {
const prevLog = queryClient.getQueryData([
'chatLog',
]) as TempDmChatGetChatLog.OutputSchema
try {
const response = await fetch(
`${serviceUrl}/xrpc/temp.dm.getChatLog?cursor=${
prevLog?.cursor ?? ''
}`,
{
headers: createHeaders(did),
},
)
if (!response.ok) throw new Error('Failed to fetch chat log')
const json =
(await response.json()) as TempDmChatGetChatLog.OutputSchema
for (const log of json.logs) {
if (TempDmChatDefs.isLogDeleteMessage(log)) {
queryClient.setQueryData(['chat', log.chatId], (prev: Chat) => {
// What to do in this case
if (!prev) return
// HACK we don't know who the creator of a message is, so just filter by id for now
if (prev.messages.find(m => m.id === log.message.id)) return prev
return {
...prev,
messages: [log.message, ...prev.messages],
}
})
}
}
return json
} catch (e) {
console.log(e)
}
},
refetchInterval: 5000,
})
}
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