import { install } from "./commands/install";
import { reconfigure, repair } from "./commands/reconfigure";
import { doctor } from "./commands/doctor";
import { status } from "./commands/status";
import { diagnosticsCollect } from "./commands/diagnostics";
import { redactConfig, type RedactConfigFormat } from "./commands/redact-config";
import type { InstallOptions, ReconfigureOptions } from "./types/context";

function usage(): never {
  console.error("Usage:");
  console.error("  hy2xs-orchestrator install --package-dir <path> [--config <path>] [--skip-firewall] [--skip-service-start] [--skip-smoke] [--non-interactive]");
  console.error("  hy2xs-orchestrator reconfigure --package-dir <path> [--config <path>] [--dry-run|--apply] [--skip-firewall] [--skip-service-start] [--skip-smoke]");
  console.error("  hy2xs-orchestrator repair --package-dir <path> [--config <path>] [--skip-firewall] [--skip-service-start] [--skip-smoke]");
  console.error("  hy2xs-orchestrator doctor --package-dir <path> [--config <path>] [--skip-firewall] [--skip-service-start] [--skip-smoke]");
  console.error("  hy2xs-orchestrator status --package-dir <path> [--config <path>] [--skip-firewall] [--skip-service-start] [--skip-smoke]");
  console.error("  hy2xs-orchestrator diagnostics collect --package-dir <path> [--config <path>] [--skip-firewall] [--skip-service-start] [--skip-smoke]");
  console.error("  hy2xs-orchestrator redact-config --config <path> [--in-place | --out <path>] [--format auto|env|yaml]");
  console.error("  note: --skip-start is deprecated alias for --skip-service-start --skip-smoke");
  process.exit(2);
}

function parseRedactConfigOptions(args: string[]): {
  configPath: string;
  outPath: string;
  inPlace: boolean;
  format: RedactConfigFormat;
} {
  let configPath = "";
  let outPath = "";
  let inPlace = false;
  let format: RedactConfigFormat = "auto";

  for (let i = 0; i < args.length; i += 1) {
    const arg = args[i];
    switch (arg) {
      case "--config":
        configPath = takeValue(args, i, arg);
        i += 1;
        break;
      case "--out":
        outPath = takeValue(args, i, arg);
        i += 1;
        break;
      case "--in-place":
        inPlace = true;
        break;
      case "--format": {
        const value = takeValue(args, i, arg);
        if (value !== "auto" && value !== "env" && value !== "yaml") {
          console.error(`invalid --format value: ${value}`);
          usage();
        }
        format = value;
        i += 1;
        break;
      }
      default:
        console.error(`Unknown argument: ${arg}`);
        usage();
    }
  }

  if (!configPath) {
    console.error("Missing --config");
    usage();
  }

  if (inPlace === (outPath !== "")) {
    console.error("Specify exactly one of --in-place or --out <path>");
    usage();
  }

  return { configPath, outPath, inPlace, format };
}

function takeValue(args: string[], index: number, flag: string): string {
  const value = args[index + 1];
  if (!value || value.startsWith("--")) {
    console.error(`Missing value for ${flag}`);
    usage();
  }
  return value;
}

function parseInstallOptions(args: string[]): InstallOptions {
  const options: InstallOptions = {
    packageDir: "",
    sourceConfigPath: "",
    runtimeConfigPath: "/etc/hy2xs/hy2xs.env",
    nonInteractive: false,
    skipFirewall: false,
    skipServiceStart: false,
    skipSmoke: false
  };

  for (let i = 0; i < args.length; i += 1) {
    const arg = args[i];
    switch (arg) {
      case "--package-dir":
        options.packageDir = takeValue(args, i, arg);
        i += 1;
        break;
      case "--non-interactive":
        options.nonInteractive = true;
        break;
      case "--skip-firewall":
        options.skipFirewall = true;
        break;
      case "--skip-service-start":
        options.skipServiceStart = true;
        break;
      case "--skip-smoke":
        options.skipSmoke = true;
        break;
      case "--skip-start":
        console.error("warning: --skip-start is deprecated; use --skip-service-start and/or --skip-smoke");
        options.skipServiceStart = true;
        options.skipSmoke = true;
        break;
      case "--config":
        options.sourceConfigPath = takeValue(args, i, arg);
        i += 1;
        break;
      default:
        console.error(`Unknown argument: ${arg}`);
        usage();
    }
  }

  if (!options.packageDir) {
    console.error("Missing --package-dir");
    usage();
  }

  if (options.skipSmoke && process.env.HY2XS_BREAK_GLASS !== "1") {
    console.error("--skip-smoke is break-glass only. Set HY2XS_BREAK_GLASS=1 to continue.");
    usage();
  }

  return options;
}

function parseReconfigureOptions(args: string[]): ReconfigureOptions {
  const options: ReconfigureOptions = {
    packageDir: "",
    sourceConfigPath: "/etc/hy2xs/hy2xs.env",
    runtimeConfigPath: "/etc/hy2xs/hy2xs.env",
    nonInteractive: false,
    dryRun: false,
    apply: false,
    skipFirewall: false,
    skipServiceStart: false,
    skipSmoke: false
  };

  for (let i = 0; i < args.length; i += 1) {
    const arg = args[i];
    switch (arg) {
      case "--package-dir":
        options.packageDir = takeValue(args, i, arg);
        i += 1;
        break;
      case "--config":
        options.sourceConfigPath = takeValue(args, i, arg);
        i += 1;
        break;
      case "--dry-run":
        options.dryRun = true;
        break;
      case "--apply":
        options.apply = true;
        break;
      case "--skip-firewall":
        options.skipFirewall = true;
        break;
      case "--skip-service-start":
        options.skipServiceStart = true;
        break;
      case "--skip-smoke":
        options.skipSmoke = true;
        break;
      case "--skip-start":
        console.error("warning: --skip-start is deprecated; use --skip-service-start and/or --skip-smoke");
        options.skipServiceStart = true;
        options.skipSmoke = true;
        break;
      default:
        console.error(`Unknown argument: ${arg}`);
        usage();
    }
  }

  if (!options.packageDir) {
    console.error("Missing --package-dir");
    usage();
  }

  if (options.dryRun === options.apply) {
    console.error("Specify exactly one of --dry-run or --apply");
    usage();
  }

  if (options.skipSmoke && process.env.HY2XS_BREAK_GLASS !== "1") {
    console.error("--skip-smoke is break-glass only. Set HY2XS_BREAK_GLASS=1 to continue.");
    usage();
  }

  return options;
}

function parseCommonOptions(args: string[]): InstallOptions {
  return parseInstallOptions(args);
}

async function main(): Promise<void> {
  const [command, ...args] = Bun.argv.slice(2);
  if (command === "install") {
    await install(parseInstallOptions(args));
    return;
  }
  if (command === "reconfigure") {
    await reconfigure(parseReconfigureOptions(args));
    return;
  }
  if (command === "repair") {
    const options = parseReconfigureOptions(["--apply", ...args]);
    await repair(options);
    return;
  }
  if (command === "doctor") {
    const options = parseReconfigureOptions(["--dry-run", ...args]);
    await doctor(options);
    return;
  }
  if (command === "status") {
    await status(parseCommonOptions(args));
    return;
  }
  if (command === "diagnostics") {
    const [subcommand, ...rest] = args;
    if (subcommand !== "collect") {
      usage();
    }
    await diagnosticsCollect(parseCommonOptions(rest));
    return;
  }
  if (command === "redact-config") {
    await redactConfig(parseRedactConfigOptions(args));
    return;
  }
  usage();
}

main().catch((error: unknown) => {
  const message = error instanceof Error ? error.message : String(error);
  console.error(`[hy2xs] ERROR: ${message}`);
  process.exit(1);
});