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apply_patch.ts
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313 lines (272 loc) · 10.7 KB
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import * as path from "path"
import { Effect, Schema } from "effect"
import * as Tool from "./tool"
import { Bus } from "../bus"
import { FileWatcher } from "../file/watcher"
import { InstanceState } from "@/effect/instance-state"
import { Patch } from "../patch"
import { createTwoFilesPatch, diffLines } from "diff"
import { assertExternalDirectoryEffect } from "./external-directory"
import { trimDiff } from "./edit"
import { LSP } from "@/lsp/lsp"
import { AppFileSystem } from "@opencode-ai/core/filesystem"
import DESCRIPTION from "./apply_patch.txt"
import { File } from "../file"
import { Format } from "../format"
import * as Bom from "@/util/bom"
export const Parameters = Schema.Struct({
patchText: Schema.String.annotate({ description: "The full patch text that describes all changes to be made" }),
})
export const ApplyPatchTool = Tool.define(
"apply_patch",
Effect.gen(function* () {
const lsp = yield* LSP.Service
const afs = yield* AppFileSystem.Service
const format = yield* Format.Service
const bus = yield* Bus.Service
const run = Effect.fn("ApplyPatchTool.execute")(function* (
params: Schema.Schema.Type<typeof Parameters>,
ctx: Tool.Context,
) {
if (!params.patchText) {
return yield* Effect.fail(new Error("patchText is required"))
}
// Parse the patch to get hunks
let hunks: Patch.Hunk[]
try {
const parseResult = Patch.parsePatch(params.patchText)
hunks = parseResult.hunks
} catch (error) {
return yield* Effect.fail(new Error(`apply_patch verification failed: ${error}`))
}
if (hunks.length === 0) {
const normalized = params.patchText.replace(/\r\n/g, "\n").replace(/\r/g, "\n").trim()
if (normalized === "*** Begin Patch\n*** End Patch") {
return yield* Effect.fail(new Error("patch rejected: empty patch"))
}
return yield* Effect.fail(new Error("apply_patch verification failed: no hunks found"))
}
const instance = yield* InstanceState.context
// Validate file paths and check permissions
const fileChanges: Array<{
filePath: string
oldContent: string
newContent: string
type: "add" | "update" | "delete" | "move"
movePath?: string
diff: string
additions: number
deletions: number
bom: boolean
}> = []
let totalDiff = ""
for (const hunk of hunks) {
const filePath = path.resolve(instance.directory, hunk.path)
yield* assertExternalDirectoryEffect(ctx, filePath)
switch (hunk.type) {
case "add": {
const oldContent = ""
const newContent =
hunk.contents.length === 0 || hunk.contents.endsWith("\n") ? hunk.contents : `${hunk.contents}\n`
const next = Bom.split(newContent)
const diff = trimDiff(createTwoFilesPatch(filePath, filePath, oldContent, next.text))
let additions = 0
let deletions = 0
for (const change of diffLines(oldContent, next.text)) {
if (change.added) additions += change.count || 0
if (change.removed) deletions += change.count || 0
}
fileChanges.push({
filePath,
oldContent,
newContent: next.text,
type: "add",
diff,
additions,
deletions,
bom: next.bom,
})
totalDiff += diff + "\n"
break
}
case "update": {
// Check if file exists for update
const stats = yield* afs.stat(filePath).pipe(Effect.catch(() => Effect.succeed(undefined)))
if (!stats || stats.type === "Directory") {
return yield* Effect.fail(
new Error(`apply_patch verification failed: Failed to read file to update: ${filePath}`),
)
}
const source = yield* Bom.readFile(afs, filePath)
const oldContent = source.text
let newContent = oldContent
let bom = source.bom
// Apply the update chunks to get new content
try {
const fileUpdate = Patch.deriveNewContentsFromChunks(
filePath,
hunk.chunks,
Bom.join(source.text, source.bom),
)
newContent = fileUpdate.content
bom = fileUpdate.bom
} catch (error) {
return yield* Effect.fail(new Error(`apply_patch verification failed: ${error}`))
}
const diff = trimDiff(createTwoFilesPatch(filePath, filePath, oldContent, newContent))
let additions = 0
let deletions = 0
for (const change of diffLines(oldContent, newContent)) {
if (change.added) additions += change.count || 0
if (change.removed) deletions += change.count || 0
}
const movePath = hunk.move_path ? path.resolve(instance.directory, hunk.move_path) : undefined
yield* assertExternalDirectoryEffect(ctx, movePath)
fileChanges.push({
filePath,
oldContent,
newContent,
type: hunk.move_path ? "move" : "update",
movePath,
diff,
additions,
deletions,
bom,
})
totalDiff += diff + "\n"
break
}
case "delete": {
const source = yield* Bom.readFile(afs, filePath).pipe(
Effect.catch((error) =>
Effect.fail(
new Error(
`apply_patch verification failed: ${error instanceof Error ? error.message : String(error)}`,
),
),
),
)
const contentToDelete = source.text
const deleteDiff = trimDiff(createTwoFilesPatch(filePath, filePath, contentToDelete, ""))
const deletions = contentToDelete.split("\n").length
fileChanges.push({
filePath,
oldContent: contentToDelete,
newContent: "",
type: "delete",
diff: deleteDiff,
additions: 0,
deletions,
bom: source.bom,
})
totalDiff += deleteDiff + "\n"
break
}
}
}
// Build per-file metadata for UI rendering (used for both permission and result)
const files = fileChanges.map((change) => ({
filePath: change.filePath,
relativePath: path.relative(instance.worktree, change.movePath ?? change.filePath).replaceAll("\\", "/"),
type: change.type,
patch: change.diff,
additions: change.additions,
deletions: change.deletions,
movePath: change.movePath,
}))
// Check permissions if needed
const relativePaths = fileChanges.map((c) => path.relative(instance.worktree, c.filePath).replaceAll("\\", "/"))
yield* ctx.ask({
permission: "edit",
patterns: relativePaths,
always: ["*"],
metadata: {
filepath: relativePaths.join(", "),
diff: totalDiff,
files,
},
})
// Apply the changes
const updates: Array<{ file: string; event: "add" | "change" | "unlink" }> = []
for (const change of fileChanges) {
const edited = change.type === "delete" ? undefined : (change.movePath ?? change.filePath)
switch (change.type) {
case "add":
// Create parent directories (recursive: true is safe on existing/root dirs)
yield* afs.writeWithDirs(change.filePath, Bom.join(change.newContent, change.bom))
updates.push({ file: change.filePath, event: "add" })
break
case "update":
yield* afs.writeWithDirs(change.filePath, Bom.join(change.newContent, change.bom))
updates.push({ file: change.filePath, event: "change" })
break
case "move":
if (change.movePath) {
// Create parent directories (recursive: true is safe on existing/root dirs)
yield* afs.writeWithDirs(change.movePath!, Bom.join(change.newContent, change.bom))
yield* afs.remove(change.filePath)
updates.push({ file: change.filePath, event: "unlink" })
updates.push({ file: change.movePath, event: "add" })
}
break
case "delete":
yield* afs.remove(change.filePath)
updates.push({ file: change.filePath, event: "unlink" })
break
}
if (edited) {
if (yield* format.file(edited)) {
yield* Bom.syncFile(afs, edited, change.bom)
}
yield* bus.publish(File.Event.Edited, { file: edited })
}
}
// Publish file change events
for (const update of updates) {
yield* bus.publish(FileWatcher.Event.Updated, update)
}
// Notify LSP of file changes and collect diagnostics
for (const change of fileChanges) {
if (change.type === "delete") continue
const target = change.movePath ?? change.filePath
yield* lsp.touchFile(target, "document")
}
const diagnostics = yield* lsp.diagnostics()
// Generate output summary
const summaryLines = fileChanges.map((change) => {
if (change.type === "add") {
return `A ${path.relative(instance.worktree, change.filePath).replaceAll("\\", "/")}`
}
if (change.type === "delete") {
return `D ${path.relative(instance.worktree, change.filePath).replaceAll("\\", "/")}`
}
const target = change.movePath ?? change.filePath
return `M ${path.relative(instance.worktree, target).replaceAll("\\", "/")}`
})
let output = `Success. Updated the following files:\n${summaryLines.join("\n")}`
for (const change of fileChanges) {
if (change.type === "delete") continue
const target = change.movePath ?? change.filePath
const block = LSP.Diagnostic.report(target, diagnostics[AppFileSystem.normalizePath(target)] ?? [])
if (!block) continue
const rel = path.relative(instance.worktree, target).replaceAll("\\", "/")
output += `\n\nLSP errors detected in ${rel}, please fix:\n${block}`
}
return {
title: output,
metadata: {
diff: totalDiff,
files,
diagnostics,
},
output,
}
})
return {
description: DESCRIPTION,
parameters: Parameters,
execute: (params: Schema.Schema.Type<typeof Parameters>, ctx: Tool.Context) =>
run(params, ctx).pipe(Effect.orDie),
}
}),
)