import test from "node:test";
import assert from "node:assert/strict";
import os from "node:os";
import path from "node:path";
import { execFile } from "node:child_process";
import { mkdtemp, readFile, rm, writeFile } from "node:fs/promises";
import { promisify } from "node:util";

const execFileAsync = promisify(execFile);
const scriptPath = new URL("../scripts/boss-state-store-maintenance.mjs", import.meta.url);

test("state store maintenance script exposes migration, backup, export, and rollback commands", async () => {
  const source = await readFile(scriptPath, "utf8");

  for (const command of [
    "describe",
    "validate-schema",
    "backup-file",
    "export-file",
    "migrate-file-to-postgres",
    "export-postgres-backup",
    "restore-postgres-backup",
    "rollback-postgres-to-file",
  ]) {
    assert.match(source, new RegExp(command));
  }
  assert.match(source, /BOSS_DATABASE_URL/);
  assert.match(source, /boss_state_snapshots/);
});

test("backup-file dry run validates local state without requiring postgres", async () => {
  const root = await mkdtemp(path.join(os.tmpdir(), "boss-state-maintenance-"));
  try {
    const stateFile = path.join(root, "boss-state.json");
    await writeFile(stateFile, JSON.stringify({ schemaVersion: 1, migratedAt: "2026-04-27T00:00:00.000Z" }), "utf8");

    const { stdout } = await execFileAsync(process.execPath, [
      scriptPath.pathname,
      "backup-file",
      "--input",
      stateFile,
      "--dry-run",
    ], {
      env: {
        ...process.env,
        BOSS_STATE_FILE: stateFile,
      },
    });

    const payload = JSON.parse(stdout);
    assert.equal(payload.ok, true);
    assert.equal(payload.action, "backup-file");
    assert.equal(payload.dryRun, true);
    assert.equal(payload.source, stateFile);
    assert.equal(payload.bytes > 0, true);
  } finally {
    await rm(root, { recursive: true, force: true });
  }
});

test("migrate-file-to-postgres dry run requires explicit postgres mode and database url without connecting", async () => {
  const root = await mkdtemp(path.join(os.tmpdir(), "boss-state-maintenance-"));
  try {
    const stateFile = path.join(root, "boss-state.json");
    await writeFile(stateFile, JSON.stringify({ schemaVersion: 1, migratedAt: "2026-04-27T00:00:00.000Z" }), "utf8");

    await assert.rejects(
      execFileAsync(process.execPath, [
        scriptPath.pathname,
        "migrate-file-to-postgres",
        "--input",
        stateFile,
        "--dry-run",
      ], {
        env: {
          ...process.env,
          BOSS_STATE_FILE: stateFile,
          BOSS_STATE_STORE: "file",
          BOSS_DATABASE_URL: "",
        },
      }),
      /BOSS_STATE_STORE_POSTGRES_REQUIRED/,
    );

    await assert.rejects(
      execFileAsync(process.execPath, [
        scriptPath.pathname,
        "migrate-file-to-postgres",
        "--input",
        stateFile,
        "--dry-run",
      ], {
        env: {
          ...process.env,
          BOSS_STATE_FILE: stateFile,
          BOSS_STATE_STORE: "postgres",
          BOSS_DATABASE_URL: "",
        },
      }),
      /BOSS_DATABASE_URL_REQUIRED/,
    );

    const { stdout } = await execFileAsync(process.execPath, [
      scriptPath.pathname,
      "migrate-file-to-postgres",
      "--input",
      stateFile,
      "--dry-run",
    ], {
      env: {
        ...process.env,
        BOSS_STATE_FILE: stateFile,
        BOSS_STATE_STORE: "postgres",
        BOSS_DATABASE_URL: "postgres://boss@example.invalid/boss",
      },
    });

    const payload = JSON.parse(stdout);
    assert.equal(payload.ok, true);
    assert.equal(payload.action, "migrate-file-to-postgres");
    assert.equal(payload.dryRun, true);
    assert.equal(payload.postgresConfigured, true);
    assert.equal(payload.wouldConnect, false);
    assert.equal(payload.schemaValid, true);
  } finally {
    await rm(root, { recursive: true, force: true });
  }
});

test("validate-schema rejects an incomplete postgres schema", async () => {
  const root = await mkdtemp(path.join(os.tmpdir(), "boss-state-maintenance-"));
  try {
    const schemaFile = path.join(root, "postgres-state-schema.sql");
    await writeFile(schemaFile, "CREATE TABLE boss_state_snapshots (state JSONB NOT NULL);", "utf8");

    await assert.rejects(
      execFileAsync(process.execPath, [
        scriptPath.pathname,
        "validate-schema",
        "--schema",
        schemaFile,
      ]),
      /POSTGRES_SCHEMA_INVALID/,
    );
  } finally {
    await rm(root, { recursive: true, force: true });
  }
});