kilocode/packages/opencode/test/plugin/codex.test.ts

import { describe, expect, test } from "bun:test"
import {
  parseJwtClaims,
  extractAccountIdFromClaims,
  extractAccountId,
  CodexAuthPlugin,
  type IdTokenClaims,
} from "../../src/plugin/codex"
import type { PluginInput } from "@kilocode/plugin"

function createTestJwt(payload: object): string {
  const header = Buffer.from(JSON.stringify({ alg: "none" })).toString("base64url")
  const body = Buffer.from(JSON.stringify(payload)).toString("base64url")
  return `${header}.${body}.sig`
}

describe("plugin.codex", () => {
  test("identifies refresh requests as Kilo", async () => {
    const original = globalThis.fetch
    const seen: Request[] = []
    let auth = {
      type: "oauth" as const,
      access: "old-access",
      refresh: "old-refresh",
      expires: 0,
    }
    const input = {
      client: {
        auth: {
          set: async (req: { body: typeof auth }) => {
            auth = req.body
          },
        },
      },
    } as unknown as PluginInput
    globalThis.fetch = Object.assign(
      async (...args: Parameters<typeof globalThis.fetch>) => {
        const req = new Request(...args)
        seen.push(req)
        if (req.url === "https://auth.openai.com/oauth/token") {
          return Response.json({
            id_token: "",
            access_token: "next-access",
            refresh_token: "next-refresh",
            expires_in: 60,
          })
        }
        return new Response("", { status: 200 })
      },
      { preconnect: original.preconnect },
    )

    try {
      const plugin = await CodexAuthPlugin(input)
      const loaded = await plugin.auth!.loader!(async () => auth, {} as never)
      await loaded.fetch("https://api.openai.com/v1/responses")
    } finally {
      globalThis.fetch = original
    }

    const refresh = seen[0]
    expect(refresh.url).toBe("https://auth.openai.com/oauth/token")
    expect(refresh.headers.get("user-agent")).toMatch(/^kilo\//)
    expect(await refresh.text()).toContain("refresh_token=old-refresh")
  })

  describe("parseJwtClaims", () => {
    test("parses valid JWT with claims", () => {
      const payload = { email: "test@example.com", chatgpt_account_id: "acc-123" }
      const jwt = createTestJwt(payload)
      const claims = parseJwtClaims(jwt)
      expect(claims).toEqual(payload)
    })

    test("returns undefined for JWT with less than 3 parts", () => {
      expect(parseJwtClaims("invalid")).toBeUndefined()
      expect(parseJwtClaims("only.two")).toBeUndefined()
    })

    test("returns undefined for invalid base64", () => {
      expect(parseJwtClaims("a.!!!invalid!!!.b")).toBeUndefined()
    })

    test("returns undefined for invalid JSON payload", () => {
      const header = Buffer.from("{}").toString("base64url")
      const invalidJson = Buffer.from("not json").toString("base64url")
      expect(parseJwtClaims(`${header}.${invalidJson}.sig`)).toBeUndefined()
    })
  })

  describe("extractAccountIdFromClaims", () => {
    test("extracts chatgpt_account_id from root", () => {
      const claims: IdTokenClaims = { chatgpt_account_id: "acc-root" }
      expect(extractAccountIdFromClaims(claims)).toBe("acc-root")
    })

    test("extracts chatgpt_account_id from nested https://api.openai.com/auth", () => {
      const claims: IdTokenClaims = {
        "https://api.openai.com/auth": { chatgpt_account_id: "acc-nested" },
      }
      expect(extractAccountIdFromClaims(claims)).toBe("acc-nested")
    })

    test("prefers root over nested", () => {
      const claims: IdTokenClaims = {
        chatgpt_account_id: "acc-root",
        "https://api.openai.com/auth": { chatgpt_account_id: "acc-nested" },
      }
      expect(extractAccountIdFromClaims(claims)).toBe("acc-root")
    })

    test("extracts from organizations array as fallback", () => {
      const claims: IdTokenClaims = {
        organizations: [{ id: "org-123" }, { id: "org-456" }],
      }
      expect(extractAccountIdFromClaims(claims)).toBe("org-123")
    })

    test("returns undefined when no accountId found", () => {
      const claims: IdTokenClaims = { email: "test@example.com" }
      expect(extractAccountIdFromClaims(claims)).toBeUndefined()
    })
  })

  describe("extractAccountId", () => {
    test("extracts from id_token first", () => {
      const idToken = createTestJwt({ chatgpt_account_id: "from-id-token" })
      const accessToken = createTestJwt({ chatgpt_account_id: "from-access-token" })
      expect(
        extractAccountId({
          id_token: idToken,
          access_token: accessToken,
          refresh_token: "rt",
        }),
      ).toBe("from-id-token")
    })

    test("falls back to access_token when id_token has no accountId", () => {
      const idToken = createTestJwt({ email: "test@example.com" })
      const accessToken = createTestJwt({
        "https://api.openai.com/auth": { chatgpt_account_id: "from-access" },
      })
      expect(
        extractAccountId({
          id_token: idToken,
          access_token: accessToken,
          refresh_token: "rt",
        }),
      ).toBe("from-access")
    })

    test("returns undefined when no tokens have accountId", () => {
      const token = createTestJwt({ email: "test@example.com" })
      expect(
        extractAccountId({
          id_token: token,
          access_token: token,
          refresh_token: "rt",
        }),
      ).toBeUndefined()
    })

    test("handles missing id_token", () => {
      const accessToken = createTestJwt({ chatgpt_account_id: "acc-123" })
      expect(
        extractAccountId({
          id_token: "",
          access_token: accessToken,
          refresh_token: "rt",
        }),
      ).toBe("acc-123")
    })
  })
})