elk/composables/masto/relationship.ts

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2023-01-06 19:40:15 +01:00
import type { Account, Relationship } from 'masto'
import type { Ref } from 'vue'
// Batch requests for relationships when used in the UI
// We don't want to hold to old values, so every time a Relationship is needed it
// is requested again from the server to show the latest state
const requestedRelationships = new Map<string, Ref<Relationship | undefined>>()
let timeoutHandle: NodeJS.Timeout | undefined
export function useRelationship(account: Account): Ref<Relationship | undefined> {
if (!currentUser.value)
return ref()
let relationship = requestedRelationships.get(account.id)
if (relationship)
return relationship
relationship = ref<Relationship | undefined>()
requestedRelationships.set(account.id, relationship)
if (timeoutHandle)
clearTimeout(timeoutHandle)
timeoutHandle = setTimeout(() => {
timeoutHandle = undefined
fetchRelationships()
}, 100)
return relationship
}
async function fetchRelationships() {
const requested = Array.from(requestedRelationships.entries()).filter(([, r]) => !r.value)
const relationships = await useMasto().accounts.fetchRelationships(requested.map(([id]) => id))
for (let i = 0; i < requested.length; i++)
requested[i][1].value = relationships[i]
}