import type { LocalContext } from "../../context.js";
import { buildCommand } from "@stricli/core";
import { createApiClient } from "../../utils/api-client.js";
import { getConfigPath, readConfig } from "../../utils/config.js";
import { formatError } from "../../utils/format-error.js";
import { TOKEN_PREFIX } from "../../utils/token.js";

function formatDate(date: Date): string {
  return date.toLocaleString();
}

function formatRelativeTime(date: Date): string {
  const now = new Date();
  const diffMs = date.getTime() - now.getTime();
  const diffDays = Math.floor(diffMs / (1000 * 60 * 60 * 24));

  if (diffDays < 0) {
    return `${Math.abs(diffDays).toLocaleString()} days ago`;
  }

  if (diffDays === 0) {
    const diffHours = Math.floor(diffMs / (1000 * 60 * 60));
    return diffHours <= 0 ? "expired" : `in ${diffHours.toLocaleString()} hours`;
  }

  if (diffDays === 1) {
    return "tomorrow";
  }

  return `in ${diffDays.toLocaleString()} days`;
}

async function status(this: LocalContext): Promise<void> {
  const config = await readConfig();

  if (!config) {
    console.log("Not logged in");
    console.log(`\nConfig file: ${getConfigPath()} (not found)`);
    console.log(
      "\nRun 'reviq bootstrap' to create a superuser or 'reviq auth login' to authenticate.",
    );
    return;
  }

  console.log("Authentication Status");
  console.log("=====================\n");

  // Show local config info
  console.log("Local Configuration:");
  console.log(`  Config file: ${getConfigPath()}`);
  console.log(`  API URL: ${config.apiUrl}`);

  // Show token format info
  const hasNewFormat = config.token.startsWith(TOKEN_PREFIX);
  console.log(
    `  Token format: ${hasNewFormat ? "reviq_<base58>" : "legacy (hex)"}`,
  );

  // Try to fetch status from API
  console.log("\nAPI Status:");
  try {
    const api = await createApiClient();
    const response = await api.me.authStatus();

    // User info
    console.log("\n  User:");
    console.log(`    Email: ${response.user.email}`);
    if (response.user.displayName) {
      console.log(`    Display name: ${response.user.displayName}`);
    }
    if (response.user.fullName) {
      console.log(`    Full name: ${response.user.fullName}`);
    }
    console.log(
      `    Email verified: ${response.user.emailVerified ? "yes" : "no"}`,
    );
    console.log(`    Superuser: ${response.user.isSuperuser ? "yes" : "no"}`);

    // Auth method info
    if (response.auth.method === "api_token") {
      console.log("\n  API Token:");
      console.log(`    Name: ${response.auth.tokenName}`);
      console.log(`    Token ID: ${response.auth.tokenId}`);
      console.log(`    Created: ${formatDate(response.auth.createdAt)}`);
      console.log(
        `    Expires: ${formatDate(response.auth.expiresAt)} (${formatRelativeTime(response.auth.expiresAt)})`,
      );
      if (response.auth.lastUsedAt) {
        console.log(`    Last used: ${formatDate(response.auth.lastUsedAt)}`);
      }
    } else {
      console.log("\n  Session:");
      console.log(`    Session ID: ${response.auth.sessionId}`);
      console.log(`    Created: ${formatDate(response.auth.createdAt)}`);
      console.log(
        `    Expires: ${formatDate(response.auth.expiresAt)} (${formatRelativeTime(response.auth.expiresAt)})`,
      );
    }
  } catch (error) {
    console.log(`  Error: ${formatError(error)}`);
    console.log(
      "\n  Unable to connect to API. Local credentials may be invalid.",
    );
  }
}

export const statusCommand = buildCommand({
  func: status,
  parameters: {},
  docs: {
    brief: "Check authentication status",
    fullDescription:
      "Shows the current authentication status and config file location.",
  },
});