import { spawnSync } from "node:child_process";
import { mkdtempSync, mkdirSync, readFileSync, rmSync } from "node:fs";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { describe, expect, it } from "vitest";

const SCRIPT_PATH = "scripts/install-cli.sh";

function runInstallCliShell(script: string, env: NodeJS.ProcessEnv = {}) {
  return spawnSync("bash", ["-c", script], {
    encoding: "utf8",
    env: {
      ...process.env,
      OPENCLAW_INSTALL_CLI_SH_NO_RUN: "1",
      ...env,
    },
  });
}

describe("install-cli.sh", () => {
  const script = readFileSync(SCRIPT_PATH, "utf8");

  it("keeps HOME for default prefix while OPENCLAW_HOME controls git checkout paths", () => {
    const tmp = mkdtempSync(join(tmpdir(), "openclaw-install-cli-home-"));
    const osHome = join(tmp, "os-home");
    const openclawHome = join(tmp, "openclaw-home");
    mkdirSync(osHome, { recursive: true });
    mkdirSync(openclawHome, { recursive: true });

    let result: ReturnType<typeof runInstallCliShell> | undefined;
    try {
      result = runInstallCliShell(
        [
          `cd ${JSON.stringify(process.cwd())}`,
          `source ${JSON.stringify(SCRIPT_PATH)}`,
          'printf "prefix=%s\\ngit=%s\\n" "$PREFIX" "$GIT_DIR"',
        ].join("\n"),
        {
          HOME: osHome,
          OPENCLAW_HOME: openclawHome,
          OPENCLAW_GIT_DIR: undefined,
          OPENCLAW_PREFIX: undefined,
        },
      );
    } finally {
      rmSync(tmp, { force: true, recursive: true });
    }

    expect(result?.status).toBe(0);
    const output = result?.stdout ?? "";
    expect(output).toContain(`prefix=${join(osHome, ".openclaw")}`);
    expect(output).toContain(`git=${join(openclawHome, "openclaw")}`);
  });

  it("resolves requested git install versions to checkout refs", () => {
    const result = runInstallCliShell(`
      set -euo pipefail
      source "${SCRIPT_PATH}"
      npm_bin() { echo npm; }
      npm() {
        if [[ "$1" == "view" && "$2" == "openclaw" && "$3" == "dist-tags.beta" ]]; then
          printf '2026.5.12-beta.3\\n'
          return 0
        fi
        return 1
      }
      OPENCLAW_VERSION=v2026.5.12-beta.3
      printf 'tag=%s\\n' "$(resolve_git_openclaw_ref)"
      OPENCLAW_VERSION=2026.5.12-beta.3
      printf 'semver=%s\\n' "$(resolve_git_openclaw_ref)"
      OPENCLAW_VERSION=beta
      printf 'beta=%s\\n' "$(resolve_git_openclaw_ref)"
      OPENCLAW_VERSION=main
      printf 'main=%s\\n' "$(resolve_git_openclaw_ref)"
    `);

    expect(result.status).toBe(0);
    expect(result.stdout).toContain("tag=v2026.5.12-beta.3");
    expect(result.stdout).toContain("semver=v2026.5.12-beta.3");
    expect(result.stdout).toContain("beta=v2026.5.12-beta.3");
    expect(result.stdout).toContain("main=main");
  });

  it("fetches moving git refs without tags for git installs", () => {
    expect(script).toContain('git -C "$repo_dir" fetch --no-tags origin main');
    expect(script).toContain(
      'git -C "$repo_dir" fetch --no-tags origin "refs/heads/${ref}:refs/remotes/origin/${ref}"',
    );
    expect(script).toContain('git -C "$repo_dir" pull --rebase --no-tags || true');

    const branchCheckIndex = script.indexOf('ls-remote --exit-code --heads origin "$ref"');
    const tagFetchIndex = script.indexOf("fetch --tags origin");
    expect(branchCheckIndex).toBeGreaterThan(-1);
    expect(tagFetchIndex).toBeGreaterThan(-1);
    expect(branchCheckIndex).toBeLessThan(tagFetchIndex);
  });

  it("uses non-frozen lockfile installs only for moving git refs", () => {
    const result = runInstallCliShell(`
      set -euo pipefail
      source "${SCRIPT_PATH}"
      git() {
        if [[ "$1" == "-C" && "$3" == "ls-remote" && "\${7:-}" == "feature" ]]; then
          return 0
        fi
        return 1
      }
      printf 'main=%s\\n' "$(git_install_lockfile_flag /repo main)"
      printf 'branch=%s\\n' "$(git_install_lockfile_flag /repo feature)"
      printf 'tag=%s\\n' "$(git_install_lockfile_flag /repo v2026.5.12)"
    `);

    expect(result.status).toBe(0);
    expect(result.stdout).toContain("main=--no-frozen-lockfile");
    expect(result.stdout).toContain("branch=--no-frozen-lockfile");
    expect(result.stdout).toContain("tag=--frozen-lockfile");
    expect(script).toContain(
      'CI="${CI:-true}" SHARP_IGNORE_GLOBAL_LIBVIPS="$SHARP_IGNORE_GLOBAL_LIBVIPS" run_pnpm -C "$repo_dir" install "$install_lockfile_flag"',
    );
  });

  it("aligns pnpm to the checked-out repo packageManager before installing", () => {
    expect(script).toContain("activate_repo_pnpm_version()");
    expect(script).toContain('"$corepack_cmd" prepare "pnpm@${version}" --activate');
    expect(script).toContain('activate_repo_pnpm_version "$repo_dir"');
  });

  it("clears npm freshness filters for package installs", () => {
    expect(script).toContain('freshness_flag="--min-release-age=0"');
    expect(script).toContain('freshness_flag="--before=$(date -u');
    expect(script).toContain("env -u NPM_CONFIG_BEFORE -u npm_config_before");
  });

  it("rejects OpenClaw GitHub source targets for npm installs", () => {
    const result = runInstallCliShell(`
      set -euo pipefail
      source "${SCRIPT_PATH}"
      OPENCLAW_VERSION=main
      install_openclaw
    `);

    expect(result.status).toBe(1);
    expect(result.stdout).toContain("npm installs do not support OpenClaw GitHub source targets");
    expect(result.stdout).toContain("--install-method git --version main");
  });
});