import * as Clipboard from "./clipboard"

type Toast = {

show: (input: { message: string; variant: "info" | "success" | "warning" | "error" }) => void

error: (err: unknown) => void

}

type FocusableSelectionTarget = {

hasSelection: () => boolean

}

type Renderer = {

getSelection: () => { getSelectedText: () => string; selectedRenderables: FocusableSelectionTarget[] } | null

clearSelection: () => void

currentFocusedRenderable?: FocusableSelectionTarget | null

}

type SelectionKeyEvent = {

ctrl?: boolean

name: string

preventDefault: () => void

stopPropagation: () => void

}

export function copy(renderer: Renderer, toast: Toast): boolean {

const text = renderer.getSelection()?.getSelectedText()

if (!text) return false

Clipboard.copy(text)

.then(() => toast.show({ message: "Copied to clipboard", variant: "info" }))

.catch(toast.error)

renderer.clearSelection()

return true

}

export function handleSelectionKey(renderer: Renderer, toast: Toast, event: SelectionKeyEvent) {

const selection = renderer.getSelection()

if (!selection) return

if (event.ctrl && event.name === "c") {

if (!copy(renderer, toast)) {

renderer.clearSelection()

return

}

event.preventDefault()

event.stopPropagation()

return

}

if (event.name === "escape") {

renderer.clearSelection()

event.preventDefault()

event.stopPropagation()

return

}

const focus = renderer.currentFocusedRenderable

if (focus?.hasSelection() && selection.selectedRenderables.includes(focus)) return

renderer.clearSelection()

}

export * as Selection from "./selection"