/**
 * Send error details to DEBUGGING_CHANNEL_ID when set.
 * Call setClient(client) from the main bot on ready so errors can be posted.
 */
const { CONFIG } = require('../config');

let client = null;

function setClient(c) {
  client = c;
}

/**
 * Post an error to the debugging channel (if DEBUGGING_CHANNEL_ID and client are set).
 * @param {string} context - e.g. 'escalate', 'deescalate', 'email-routing', 'Gmail poll'
 * @param {Error} error
 * @param {import('discord.js').Interaction} [interaction]
 * @param {import('discord.js').Client} [overrideClient] - use this client instead of stored (e.g. from gmail-poll)
 */
async function logError(context, error, interaction = null, overrideClient = null) {
  const c = overrideClient || client;
  if (!c || !CONFIG.DEBUGGING_CHANNEL_ID) return;

  try {
    const channel = await c.channels.fetch(CONFIG.DEBUGGING_CHANNEL_ID);
    const userLine = interaction?.user?.tag
      ? `User: ${interaction.user.tag}\n`
      : '';
    const commandLine = (interaction?.commandName || interaction?.customId)
      ? `Command/Button: ${interaction.commandName || interaction.customId}\n`
      : '';
    const stack = (error.stack || error.message || String(error)).slice(0, 1500);
    await channel.send({
      content: `\`[${context}]\` ${error.message || String(error)}\n${userLine}${commandLine}\n\`\`\`${stack}\`\`\``
    });
  } catch (_) {
    // ignore send failures
  }
}

module.exports = { setClient, logError };