51 lines
1.5 KiB
TypeScript
51 lines
1.5 KiB
TypeScript
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import type { Hooks, PluginInput } from "@opencode-ai/plugin"
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import { existsSync } from "fs"
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import { resolve, isAbsolute, join, normalize, sep } from "path"
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import { log } from "../../shared"
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export function createWriteExistingFileGuardHook(ctx: PluginInput): Hooks {
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return {
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"tool.execute.before": async (input, output) => {
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const toolName = input.tool?.toLowerCase()
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if (toolName !== "write") {
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return
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}
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const args = output.args as
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| { filePath?: string; path?: string; file_path?: string }
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| undefined
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const filePath = args?.filePath ?? args?.path ?? args?.file_path
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if (!filePath) {
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return
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}
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const resolvedPath = normalize(
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isAbsolute(filePath) ? filePath : resolve(ctx.directory, filePath)
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)
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if (existsSync(resolvedPath)) {
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const sisyphusRoot = join(ctx.directory, ".sisyphus") + sep
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const isSisyphusMarkdown =
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resolvedPath.startsWith(sisyphusRoot) && resolvedPath.endsWith(".md")
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if (isSisyphusMarkdown) {
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log("[write-existing-file-guard] Allowing .sisyphus/*.md overwrite", {
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sessionID: input.sessionID,
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filePath,
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})
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return
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}
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log("[write-existing-file-guard] Blocking write to existing file", {
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sessionID: input.sessionID,
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filePath,
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resolvedPath,
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})
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throw new Error("File already exists. Use edit tool instead.")
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}
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},
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}
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}
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