import { describe, expect, test } from "bun:test"

import { patchFiles } from "./apply-patch-file"

import { text } from "./session-diff"

describe("apply patch file", () => {

test("parses patch metadata from the server", () => {

const file = patchFiles([

{

filePath: "/tmp/a.ts",

relativePath: "a.ts",

type: "update",

patch:

"Index: a.ts\n===================================================================\n--- a.ts\t\n+++ a.ts\t\n@@ -1,2 +1,2 @@\n one\n-two\n+three\n",

additions: 1,

deletions: 1,

},

])[0]

expect(file).toBeDefined()

expect(file?.view.fileDiff.name).toBe("a.ts")

expect(text(file!.view, "deletions")).toBe("one\ntwo\n")

expect(text(file!.view, "additions")).toBe("one\nthree\n")

})

test("keeps legacy before and after payloads working", () => {

const file = patchFiles([

{

filePath: "/tmp/a.ts",

relativePath: "a.ts",

type: "update",

before: "one\n",

after: "two\n",

additions: 1,

deletions: 1,

},

])[0]

expect(file).toBeDefined()

expect(file?.view.patch).toContain("@@ -1,1 +1,1 @@")

expect(text(file!.view, "deletions")).toBe("one\n")

expect(text(file!.view, "additions")).toBe("two\n")

})

})