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import type { Prompt } from "@/context/prompt"
const DEFAULT_PROMPT: Prompt = [{ type: "text", content: "", start: 0, end: 0 }]
export const MAX_HISTORY = 100
export function canNavigateHistoryAtCursor(direction: "up" | "down", text: string, cursor: number, inHistory = false) {
const position = Math.max(0, Math.min(cursor, text.length))
const atStart = position === 0
const atEnd = position === text.length
if (inHistory) return atStart || atEnd
if (direction === "up") return position === 0
return position === text.length
}
export function clonePromptParts(prompt: Prompt): Prompt {
return prompt.map((part) => {
if (part.type === "text") return { ...part }
if (part.type === "image") return { ...part }
if (part.type === "agent") return { ...part }
return {
...part,
selection: part.selection ? { ...part.selection } : undefined,
}
})
}
export function promptLength(prompt: Prompt) {
return prompt.reduce((len, part) => len + ("content" in part ? part.content.length : 0), 0)
}
export function prependHistoryEntry(entries: Prompt[], prompt: Prompt, max = MAX_HISTORY) {
const text = prompt
.map((part) => ("content" in part ? part.content : ""))
.join("")
.trim()
const hasImages = prompt.some((part) => part.type === "image")
if (!text && !hasImages) return entries
const entry = clonePromptParts(prompt)
const last = entries[0]
if (last && isPromptEqual(last, entry)) return entries
return [entry, ...entries].slice(0, max)
}
function isPromptEqual(promptA: Prompt, promptB: Prompt) {
if (promptA.length !== promptB.length) return false
for (let i = 0; i < promptA.length; i++) {
const partA = promptA[i]
const partB = promptB[i]
if (partA.type !== partB.type) return false
if (partA.type === "text" && partA.content !== (partB.type === "text" ? partB.content : "")) return false
if (partA.type === "file") {
if (partA.path !== (partB.type === "file" ? partB.path : "")) return false
const a = partA.selection
const b = partB.type === "file" ? partB.selection : undefined
const sameSelection =
(!a && !b) ||
(!!a &&
!!b &&
a.startLine === b.startLine &&
a.startChar === b.startChar &&
a.endLine === b.endLine &&
a.endChar === b.endChar)
if (!sameSelection) return false
}
if (partA.type === "agent" && partA.name !== (partB.type === "agent" ? partB.name : "")) return false
if (partA.type === "image" && partA.id !== (partB.type === "image" ? partB.id : "")) return false
}
return true
}
type HistoryNavInput = {
direction: "up" | "down"
entries: Prompt[]
historyIndex: number
currentPrompt: Prompt
savedPrompt: Prompt | null
}
type HistoryNavResult =
| {
handled: false
historyIndex: number
savedPrompt: Prompt | null
}
| {
handled: true
historyIndex: number
savedPrompt: Prompt | null
prompt: Prompt
cursor: "start" | "end"
}
export function navigatePromptHistory(input: HistoryNavInput): HistoryNavResult {
if (input.direction === "up") {
if (input.entries.length === 0) {
return {
handled: false,
historyIndex: input.historyIndex,
savedPrompt: input.savedPrompt,
}
}
if (input.historyIndex === -1) {
return {
handled: true,
historyIndex: 0,
savedPrompt: clonePromptParts(input.currentPrompt),
prompt: input.entries[0],
cursor: "start",
}
}
if (input.historyIndex < input.entries.length - 1) {
const next = input.historyIndex + 1
return {
handled: true,
historyIndex: next,
savedPrompt: input.savedPrompt,
prompt: input.entries[next],
cursor: "start",
}
}
return {
handled: false,
historyIndex: input.historyIndex,
savedPrompt: input.savedPrompt,
}
}
if (input.historyIndex > 0) {
const next = input.historyIndex - 1
return {
handled: true,
historyIndex: next,
savedPrompt: input.savedPrompt,
prompt: input.entries[next],
cursor: "end",
}
}
if (input.historyIndex === 0) {
if (input.savedPrompt) {
return {
handled: true,
historyIndex: -1,
savedPrompt: null,
prompt: input.savedPrompt,
cursor: "end",
}
}
return {
handled: true,
historyIndex: -1,
savedPrompt: null,
prompt: DEFAULT_PROMPT,
cursor: "end",
}
}
return {
handled: false,
historyIndex: input.historyIndex,
savedPrompt: input.savedPrompt,
}
}
|
