Jon Staab
76 lines
2.0 KiB
Markdown
76 lines
2.0 KiB
Markdown
# Thunks
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Thunks provide optimistic updates for event publishing. They immediately update the local repository while handling the actual signing and publishing asynchronously, making the UI feel more responsive.
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## Overview
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A thunk:
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- Updates local state immediately
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- Handles event signing in the background using the current session
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- Tracks publish status per relay
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- Supports soft-undo via abort
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- Can be delayed/cancelled
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- Tracks successful publishes
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## Basic Usage
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```typescript
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import {publishThunk} from '@welshman/app'
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import {createEvent, NOTE} from '@welshman/util'
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const publish = async (content: string) => {
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// Get optimal relays for publishing
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const relays = ctx.app.router
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.FromUser()
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.getUrls()
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// Create and publish thunk
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const thunk = await publishThunk({
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event: createEvent(NOTE, {content}),
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relays,
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delay: 3000, // 3s window for abort
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})
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// Track publish results
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thunk.subscribe($thunk => {
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for (const [url, result] of Object.entries($thunk.results)) {
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console.log(`${url}: ${result.status} - ${result.detail}`)
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}
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})
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// Can abort within delay window
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setTimeout(() => {
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if (userWantsToCancel) {
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thunk.controller.abort()
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}
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}, 1000)
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// Wait for completion
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await thunk.complete
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}
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```
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## Built in commands
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Several thunk factories are provided for common or more complicated scenarios like updating lists:
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- `removeRelay(url: string, mode: RelayMode)`
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- `addRelay(url: string, mode: RelayMode)`
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- `removeMessagingRelay(url: string)`
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- `addMessagingRelay(url: string)`
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- `setProfile(profile: Profile)`
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- `unfollow(value: string)`
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- `follow(tag: string[])`
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- `unmute(value: string)`
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- `mute(tag: string[])`
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- `unpin(value: string)`
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- `pin(tag: string[])`
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- `sendWrapped({template, pubkeys, ...options}: SendWrappedOptions)`
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- `manageRelay(url: string, request: ManagementRequest)`
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- `createRoom(url: string, room: RoomMeta)`
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- `deleteRoom(url: string, room: RoomMeta)`
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- `editRoom(url: string, room: RoomMeta)`
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- `joinRoom(url: string, room: RoomMeta)`
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- `leaveRoom(url: string, room: RoomMeta)`
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