Files
CodeNomad/packages/ui/src/components/diff-viewer.tsx
2025-12-05 15:07:49 +00:00

137 lines
3.9 KiB
TypeScript

import { createMemo, Show, createEffect, onCleanup } from "solid-js"
import { DiffView, DiffModeEnum } from "@git-diff-view/solid"
import { disableCache } from "@git-diff-view/core"
import type { DiffHighlighterLang } from "@git-diff-view/core"
import { ErrorBoundary } from "solid-js"
import { getLanguageFromPath } from "../lib/markdown"
import { normalizeDiffText } from "../lib/diff-utils"
import { setCacheEntry } from "../lib/global-cache"
import type { CacheEntryParams } from "../lib/global-cache"
import type { DiffViewMode } from "../stores/preferences"
import { getLogger } from "../lib/logger"
const log = getLogger("session")
disableCache()
interface ToolCallDiffViewerProps {
diffText: string
filePath?: string
theme: "light" | "dark"
mode: DiffViewMode
onRendered?: () => void
cachedHtml?: string
cacheEntryParams?: CacheEntryParams
}
type DiffData = {
oldFile?: { fileName?: string | null; fileLang?: string | null; content?: string | null }
newFile?: { fileName?: string | null; fileLang?: string | null; content?: string | null }
hunks: string[]
}
type CaptureContext = {
theme: ToolCallDiffViewerProps["theme"]
mode: DiffViewMode
diffText: string
cacheEntryParams?: CacheEntryParams
}
export function ToolCallDiffViewer(props: ToolCallDiffViewerProps) {
const diffData = createMemo<DiffData | null>(() => {
const normalized = normalizeDiffText(props.diffText)
if (!normalized) {
return null
}
const language = getLanguageFromPath(props.filePath) || "text"
const fileName = props.filePath || "diff"
return {
oldFile: {
fileName,
fileLang: (language || "text") as DiffHighlighterLang | null,
},
newFile: {
fileName,
fileLang: (language || "text") as DiffHighlighterLang | null,
},
hunks: [normalized],
}
})
let diffContainerRef: HTMLDivElement | undefined
let lastCapturedKey: string | undefined
const contextKey = createMemo(() => {
const data = diffData()
if (!data) return ""
return `${props.theme}|${props.mode}|${props.diffText}`
})
createEffect(() => {
const cachedHtml = props.cachedHtml
if (cachedHtml) {
// When we are given cached HTML, we rely on the caller's cache
// and simply notify once rendered.
props.onRendered?.()
return
}
const key = contextKey()
if (!key) return
if (!diffContainerRef) return
if (lastCapturedKey === key) return
requestAnimationFrame(() => {
if (!diffContainerRef) return
const markup = diffContainerRef.innerHTML
if (!markup) return
lastCapturedKey = key
if (props.cacheEntryParams) {
setCacheEntry(props.cacheEntryParams, {
text: props.diffText,
html: markup,
theme: props.theme,
mode: props.mode,
})
}
props.onRendered?.()
})
})
return (
<div class="tool-call-diff-viewer">
<Show
when={props.cachedHtml}
fallback={
<div ref={diffContainerRef}>
<Show
when={diffData()}
fallback={<pre class="tool-call-diff-fallback">{props.diffText}</pre>}
>
{(data) => (
<ErrorBoundary fallback={(error) => {
log.warn("Failed to render diff view", error)
return <pre class="tool-call-diff-fallback">{props.diffText}</pre>
}}>
<DiffView
data={data()}
diffViewMode={props.mode === "split" ? DiffModeEnum.Split : DiffModeEnum.Unified}
diffViewTheme={props.theme}
diffViewHighlight
diffViewWrap={false}
diffViewFontSize={13}
/>
</ErrorBoundary>
)}
</Show>
</div>
}
>
<div innerHTML={props.cachedHtml} />
</Show>
</div>
)
}