import type { RuntimeConfig, RuntimeContext } from "../src/types/context";
import { parseRuntimeEnv } from "../src/config/env";

/**
 * Минимальный валидный packaged baseline. Тесты меняют только те строки,
 * которые проверяют, поэтому «валидный по умолчанию» набор живёт в одном месте.
 */
export const BASELINE_ENV_LINES: readonly string[] = [
  "HY2XS_CONFIG_SCHEMA_VERSION=2",
  "HY2XS_IPV6_ENABLED=false",
  "HY2XS_DOMAIN=vpn.example.com",
  "HY2XS_DNS_AAAA_POLICY=strict",
  "HY2XS_PUBLIC_ENDPOINT_POLICY=strict",
  "HY2XS_PUBLIC_HOST=vpn.example.com",
  "HY2XS_PUBLIC_PORT=443",
  "HY2XS_SSH_PORT=2323",
  "HY2XS_FIREWALL_MODE=takeover",
  "HY2XS_FIREWALL_STAGED_APPLY=true",
  "HY2XS_UI_BIND_HOST=127.0.0.1",
  "HY2XS_UI_PUBLIC_ACCESS=false",
  "HY2XS_UI_PORT=8080",
  "HY2XS_ADMIN_USER=hy2xsadmin",
  "HY2XS_ADMIN_INITIAL_PASSWORD=initial-password",
  "HY2XS_ADMIN_CON_PASS=connection-password",
  "HY2XS_FORCE_PASSWORD_CHANGE=false",
  "HY2XS_ALLOW_SELF_SIGNED_DEV=false",
  "HY2XS_TLS_MODE=acme",
  "HY2XS_ACME_TYPE=http",
  "HY2XS_ACME_EMAIL=admin@example.com",
  "HY2XS_TLS_CERT_PATH=/etc/hysteria/server.crt",
  "HY2XS_TLS_KEY_PATH=/etc/hysteria/server.key",
  "HY2XS_HYSTERIA_BIND_HOST=0.0.0.0",
  "HY2XS_HYSTERIA_PORT=443",
  "HY2XS_HYSTERIA_AUTH_MODE=http",
  "HY2XS_HYSTERIA_TRAFFIC_STATS_HOST=127.0.0.1",
  "HY2XS_HYSTERIA_TRAFFIC_STATS_PORT=36712",
  "HY2XS_HYSTERIA_TRAFFIC_STATS_SECRET=traffic-stats-secret",
  "HY2XS_HYSTERIA_OBFS_TYPE=gecko",
  "HY2XS_HYSTERIA_OBFS_PASSWORD=obfs-password",
  "HY2XS_HYSTERIA_BANDWIDTH_UP=50 mbps",
  "HY2XS_HYSTERIA_BANDWIDTH_DOWN=50 mbps",
  "HY2XS_HYSTERIA_IGNORE_CLIENT_BANDWIDTH=false",
  "HY2XS_HYSTERIA_CONFIG_PATH=/etc/hysteria/config.yaml",
  "HY2XS_INSTALL_DIR=/opt/hy2xs-admin",
  "HY2XS_DATA_DIR=/var/lib/hy2xs-admin",
  "HY2XS_LOG_DIR=/var/log/hy2xs"
];

/**
 * Собирает env-текст из baseline с переопределениями.
 * Значение `null` удаляет ключ целиком (проверка поведения по умолчанию).
 */
export function envText(overrides: Record<string, string | null> = {}): string {
  const lines: string[] = [];
  const applied = new Set<string>();

  for (const line of BASELINE_ENV_LINES) {
    const key = line.slice(0, line.indexOf("="));
    if (key in overrides) {
      applied.add(key);
      const value = overrides[key];
      if (value === null) {
        continue;
      }
      lines.push(`${key}=${value}`);
      continue;
    }
    lines.push(line);
  }

  for (const [key, value] of Object.entries(overrides)) {
    if (!applied.has(key) && value !== null) {
      lines.push(`${key}=${value}`);
    }
  }

  return `${lines.join("\n")}\n`;
}

export function baselineConfig(overrides: Record<string, string | null> = {}): RuntimeConfig {
  return parseRuntimeEnv(envText(overrides));
}

export function testContext(config: RuntimeConfig): RuntimeContext {
  return {
    mode: "install",
    options: {
      packageDir: "/opt/hy2xs/package",
      sourceConfigPath: "",
      runtimeConfigPath: "/etc/hy2xs/hy2xs.env",
      nonInteractive: true,
      skipFirewall: false,
      skipServiceStart: false,
      skipSmoke: false
    },
    config,
    packageVersion: "1.0.0",
    packageBuildId: "test-build",
    installDate: "2026-08-27T00:00:00.000Z",
    hysteriaVersion: "v2.12.2",
    hysteriaResolution: "latest-stable"
  };
}