import { createHash } from "node:crypto";
import { access, mkdir, readFile, writeFile } from "node:fs/promises";
import { join } from "node:path";

import { expect } from "vitest";

import { createTestTempDirectory } from "../../fixtures/temporaryDirectory.js";
import { cliTest } from "../../support/cli/cliFixture.js";

cliTest(
  "repeated client flags plan and configure each selected client once",
  async ({ cli }) => {
    const directory = await createTestTempDirectory("rea-repeated-clients-");
    const arguments_ = [
      "setup",
      "--client",
      "cursor",
      "--client",
      "codex",
      "--client",
      "cursor",
      "--skill=false",
      "--json",
    ];
    const run = (mode: string) =>
      cli.run({
        arguments: [...arguments_, mode],
        cwd: directory,
        environment: {
          HOME: directory,
          USERPROFILE: directory,
          TMPDIR: directory,
        },
      });
    const configurations = [
      join(directory, ".cursor/mcp.json"),
      join(directory, ".codex/config.toml"),
    ];

    const preview = await run("--dry-run");
    expect(preview.exitCode, preview.stdout).toBe(0);
    expect(preview.json).toMatchObject({
      status: "planned",
      plannedActions: [
        { id: "configure_client:cursor" },
        { id: "configure_client:codex" },
      ],
      appliedActions: [],
    });
    for (const path of configurations)
      await expect(access(path)).rejects.toMatchObject({ code: "ENOENT" });

    const applied = await run("--yes");
    expect(applied.exitCode, applied.stdout).toBe(0);
    expect(applied.json).toMatchObject({
      status: "ready",
      plannedActions: [
        { id: "configure_client:cursor" },
        { id: "configure_client:codex" },
      ],
      appliedActions: ["configured_cursor", "configured_codex"],
      clients: {
        cursor: { status: "configured" },
        codex: { status: "configured" },
      },
    });
    const configured = await Promise.all(
      configurations.map((path) => readFile(path, "utf8")),
    );

    const repeated = await run("--yes");
    expect(repeated.exitCode, repeated.stdout).toBe(0);
    expect(repeated.json).toMatchObject({
      status: "ready",
      plannedActions: [],
      appliedActions: [],
    });
    expect(
      await Promise.all(configurations.map((path) => readFile(path, "utf8"))),
    ).toEqual(configured);
  },
);

cliTest(
  "uninstall preserves user edits made after an earlier setup",
  async ({ cli }) => {
    const home = await createTestTempDirectory("rea-current-uninstall-backup-");
    const config = join(home, ".cursor", "mcp.json");
    const original = '{"mcpServers":{"other":{"command":"other-server"}}}\n';
    await mkdir(join(home, ".cursor"), { recursive: true });
    await writeFile(config, original);
    const run = (arguments_: readonly string[]) =>
      cli.run({
        arguments: [...arguments_, "--json"],
        cwd: home,
        environment: { HOME: home, USERPROFILE: home, TMPDIR: home },
      });
    const planned = await run([
      "setup",
      "--client",
      "cursor",
      "--skill=false",
      "--dry-run",
    ]);
    expect(planned.exitCode, planned.stderr).toBe(0);
    expect(planned.json).toMatchObject({ status: "planned" });
    expect(await readFile(config, "utf8")).toBe(original);
    const installed = await run([
      "setup",
      "--client",
      "cursor",
      "--skill=false",
      "--yes",
    ]);
    expect(installed.exitCode, installed.stderr).toBe(0);
    expect(installed.json).toMatchObject({ status: "ready" });
    const current = (await readFile(config, "utf8")).replace(
      "other-server",
      "edited-server",
    );
    expect(current).toContain("edited-server");
    await writeFile(config, current);

    const removed = await run(["uninstall"]);
    expect(removed.exitCode, removed.stderr).toBe(0);
    expect(removed.json).toMatchObject({ status: "complete" });
    const recovery = `${config}.rea.backup.${createHash("sha256").update(current).digest("hex")}.recovery`;
    expect(await readFile(recovery, "utf8")).toBe(current);
    expect(await readFile(`${config}.rea.backup`, "utf8")).toBe(original);
    expect(JSON.parse(await readFile(config, "utf8"))).toEqual({
      mcpServers: { other: { command: "edited-server" } },
    });
  },
);