/**
 * Config command for CLI.
 *
 * @module
 */

import { isOk } from "@mks2508/no-throw";
import chalk from "chalk";
import { existsSync } from "node:fs";
import { loadConfig, saveConfig, CONFIG_FILE } from "../../coolify/config.js";

/**
 * Config command handler.
 *
 * @param action - Config action (set, get, path)
 * @param args - Action arguments
 */
export async function configCommand(
  action: string | undefined,
  args: { key?: string; value?: string },
) {
  if (action === "set") {
    if (!args.key || !args.value) {
      console.error(
        chalk.red('Error: key and value are required for "set" command'),
      );
      console.log(chalk.gray("Usage: coolify-mcp config set <key> <value>"));
      console.log(chalk.gray("Keys: url, token"));
      return;
    }

    const result = await loadConfig();
    if (isOk(result)) {
      const config = result.value;
      if (args.key === "url") {
        config.url = args.value;
      } else if (args.key === "token") {
        config.token = args.value;
      } else {
        console.error(chalk.red(`Error: Unknown key "${args.key}"`));
        return;
      }

      const saveResult = await saveConfig(config);
      if (isOk(saveResult)) {
        console.log(chalk.green(`Config updated: ${args.key} = ${args.value}`));
      } else {
        console.error(chalk.red(`Error: ${saveResult.error.message}`));
      }
    }
  } else if (action === "get") {
    const result = await loadConfig();
    if (isOk(result)) {
      const config = result.value;
      console.log(chalk.cyan("Current configuration:"));
      console.log(`  URL: ${chalk.gray(config.url || "(not set)")}`);
      console.log(
        `  Token: ${chalk.gray(config.token ? "(set)" : "(not set)")}`,
      );
    } else {
      console.error(chalk.red(`Error: ${result.error.message}`));
    }
  } else if (action === "path") {
    console.log(chalk.cyan("Config file:"));
    console.log(`  ${CONFIG_FILE}`);
    if (existsSync(CONFIG_FILE)) {
      console.log(chalk.gray("  Status: File exists"));
    } else {
      console.log(chalk.yellow("  Status: File does not exist"));
    }
  } else {
    console.log(chalk.cyan("Coolify MCP Configuration"));
    console.log();
    console.log(chalk.gray("Commands:"));
    console.log("  coolify-mcp config set <key> <value>  Set a config value");
    console.log("  coolify-mcp config get                 Show current config");
    console.log(
      "  coolify-mcp config path                Show config file path",
    );
    console.log();
    console.log(chalk.gray("Keys:"));
    console.log("  url    - Coolify instance URL");
    console.log("  token  - Coolify API token");
    console.log();
    console.log(chalk.gray("Environment variables:"));
    console.log("  COOLIFY_URL     - Coolify instance URL");
    console.log("  COOLIFY_TOKEN   - Coolify API token");
  }
}