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import { onMount } from "solid-js"
import { makeEventListener } from "@solid-primitives/event-listener"
import { showToast } from "@opencode-ai/ui/toast"
import { usePrompt, type ContentPart, type ImageAttachmentPart } from "@/context/prompt"
import { useLanguage } from "@/context/language"
import { uuid } from "@/utils/uuid"
import { getCursorPosition } from "./editor-dom"
import { attachmentMime } from "./files"
import { normalizePaste, pasteMode } from "./paste"
function dataUrl(file: File, mime: string) {
return new Promise<string>((resolve) => {
const reader = new FileReader()
reader.addEventListener("error", () => resolve(""))
reader.addEventListener("load", () => {
const value = typeof reader.result === "string" ? reader.result : ""
const idx = value.indexOf(",")
if (idx === -1) {
resolve(value)
return
}
resolve(`data:${mime};base64,${value.slice(idx + 1)}`)
})
reader.readAsDataURL(file)
})
}
type PromptAttachmentsInput = {
editor: () => HTMLDivElement | undefined
isDialogActive: () => boolean
setDraggingType: (type: "image" | "@mention" | null) => void
focusEditor: () => void
addPart: (part: ContentPart) => boolean
readClipboardImage?: () => Promise<File | null>
}
export function createPromptAttachments(input: PromptAttachmentsInput) {
const prompt = usePrompt()
const language = useLanguage()
const warn = () => {
showToast({
title: language.t("prompt.toast.pasteUnsupported.title"),
description: language.t("prompt.toast.pasteUnsupported.description"),
})
}
const add = async (file: File, toast = true) => {
const mime = await attachmentMime(file)
if (!mime) {
if (toast) warn()
return false
}
const editor = input.editor()
if (!editor) return false
const url = await dataUrl(file, mime)
if (!url) return false
const attachment: ImageAttachmentPart = {
type: "image",
id: uuid(),
filename: file.name,
mime,
dataUrl: url,
}
const cursor = prompt.cursor() ?? getCursorPosition(editor)
prompt.set([...prompt.current(), attachment], cursor)
return true
}
const addAttachment = (file: File) => add(file)
const addAttachments = async (files: File[], toast = true) => {
let found = false
for (const file of files) {
const ok = await add(file, false)
if (ok) found = true
}
if (!found && files.length > 0 && toast) warn()
return found
}
const removeAttachment = (id: string) => {
const current = prompt.current()
const next = current.filter((part) => part.type !== "image" || part.id !== id)
prompt.set(next, prompt.cursor())
}
const handlePaste = async (event: ClipboardEvent) => {
const clipboardData = event.clipboardData
if (!clipboardData) return
event.preventDefault()
event.stopPropagation()
const files = Array.from(clipboardData.items).flatMap((item) => {
if (item.kind !== "file") return []
const file = item.getAsFile()
return file ? [file] : []
})
if (files.length > 0) {
await addAttachments(files)
return
}
const plainText = clipboardData.getData("text/plain") ?? ""
// Desktop: Browser clipboard has no images and no text, try platform's native clipboard for images
if (input.readClipboardImage && !plainText) {
const file = await input.readClipboardImage()
if (file) {
await addAttachment(file)
return
}
}
if (!plainText) return
const text = normalizePaste(plainText)
const put = () => {
if (input.addPart({ type: "text", content: text, start: 0, end: 0 })) return true
input.focusEditor()
return input.addPart({ type: "text", content: text, start: 0, end: 0 })
}
if (pasteMode(text) === "manual") {
put()
return
}
const inserted = typeof document.execCommand === "function" && document.execCommand("insertText", false, text)
if (inserted) return
put()
}
const handleGlobalDragOver = (event: DragEvent) => {
if (input.isDialogActive()) return
event.preventDefault()
const hasFiles = event.dataTransfer?.types.includes("Files")
const hasText = event.dataTransfer?.types.includes("text/plain")
if (hasFiles) {
input.setDraggingType("image")
} else if (hasText) {
input.setDraggingType("@mention")
}
}
const handleGlobalDragLeave = (event: DragEvent) => {
if (input.isDialogActive()) return
if (!event.relatedTarget) {
input.setDraggingType(null)
}
}
const handleGlobalDrop = async (event: DragEvent) => {
if (input.isDialogActive()) return
event.preventDefault()
input.setDraggingType(null)
const plainText = event.dataTransfer?.getData("text/plain")
const filePrefix = "file:"
if (plainText?.startsWith(filePrefix)) {
const filePath = plainText.slice(filePrefix.length)
input.focusEditor()
input.addPart({ type: "file", path: filePath, content: "@" + filePath, start: 0, end: 0 })
return
}
const dropped = event.dataTransfer?.files
if (!dropped) return
await addAttachments(Array.from(dropped))
}
onMount(() => {
makeEventListener(document, "dragover", handleGlobalDragOver)
makeEventListener(document, "dragleave", handleGlobalDragLeave)
makeEventListener(document, "drop", handleGlobalDrop)
})
return {
addAttachment,
addAttachments,
removeAttachment,
handlePaste,
}
}
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