const { getStoreDetail } = require('../integrations/storeDetail');
const { getStoreHealth } = require('../integrations/storeHealth');
const { parseStoreNumber } = require('../utils/validate');
const { STORE_MODES } = require('../constants');
const logger = require('../utils/logger');

function parseStoreCommand(text) {
  const storeNumber = parseStoreNumber(text);
  if (!storeNumber) return { storeNumber: null, mode: null };

  const lower = text.toLowerCase();
  let mode = STORE_MODES.DEFAULT;

  if (lower.includes(' pos')) mode = STORE_MODES.POS;
  else if (lower.includes(' ios') || lower.includes(' iphone')) mode = STORE_MODES.IOS;

  return { storeNumber, mode };
}

async function handleStoreCommand(bot, trigger) {
  const { storeNumber, mode } = parseStoreCommand(trigger.message.text);

  if (!storeNumber) {
    return bot.say(
      'markdown',
      'Usage: `store <number>`\n\nExample: `store 305`\n\nOptions:\n• `store 305` — info + network + server\n• `store 305 pos` — POS systems\n• `store 305 ios` — iOS devices\n\nType `help store` for more details.'
    );
  }

  const modeLabel =
    mode === STORE_MODES.POS ? 'POS' : mode === STORE_MODES.IOS ? 'iOS' : 'Overview';
  bot.say('markdown', `🔍 Analyzing Store **${storeNumber}** (${modeLabel})...`);

  try {
    const report = await getStoreDetail(storeNumber, mode);
    const sections = report.split(/\n\n(?=\*\*)/);

    for (let i = 0; i < sections.length; i++) {
      const section = sections[i].trim();
      if (section) {
        await bot.say('markdown', section);
        if (i < sections.length - 1) await new Promise(r => setTimeout(r, 400));
      }
    }
  } catch (err) {
    logger.error('Store analysis error', { storeNumber, error: err.message });
    bot.say('markdown', `❌ Error analyzing store **${storeNumber}**:\n${err.message}`);
  }
}

async function handleAnalyzeCommand(bot, trigger) {
  const { storeNumber, mode } = parseStoreCommand(trigger.message.text);

  if (!storeNumber) {
    return bot.say(
      'markdown',
      'Usage: `analyze <number>`\n\nExample: `analyze 305`\n\nOptions:\n• `analyze 305` — full health summary\n• `analyze 305 pos` — POS health (broken only)\n• `analyze 305 ios` — iOS health (broken only)\n\nType `help analyze` for more details.'
    );
  }

  const modeLabel =
    mode === STORE_MODES.POS ? 'POS' : mode === STORE_MODES.IOS ? 'iOS' : 'Overview';
  bot.say('markdown', `🔍 Running Health Analysis for Store **${storeNumber}** (${modeLabel})...`);

  try {
    const health = await getStoreHealth(storeNumber, mode);

    if (health && health.summary) {
      let output = health.summary;

      // For sub-modes or analyze, only show broken components
      if (mode !== STORE_MODES.DEFAULT) {
        const lines = output.split('\n');
        const issueStart = lines.findIndex(l => l.includes('Issues Detected') || l.includes('⚠️'));
        if (issueStart > -1) {
          output =
            lines.slice(0, issueStart + 1).join('\n') +
            '\n' +
            lines
              .slice(issueStart + 1)
              .filter(l => l.trim().startsWith('-'))
              .join('\n');
        }
      }

      bot.say('markdown', output);
    } else {
      bot.say('markdown', '✅ Analysis completed, but no summary was generated.');
    }
  } catch (err) {
    logger.error('Store health analysis error', { storeNumber, error: err.message });
    bot.say('markdown', `❌ Error analyzing store **${storeNumber}**:\n${err.message}`);
  }
}

async function handleHelpCommand(bot, trigger) {
  const text = trigger.message.text.toLowerCase().trim();

  let response;

  if (text.includes('store')) {
    response = `**Store Commands**

• \`store <number>\` — Store info/details, active network devices, and the store server
• \`store <number> pos\` — Store server, registers, mobile registers, printers, and payment terminals
• \`store <number> ios\` — All iOS devices

**Tip:** Type the command without a number for usage examples.`;
  } else if (text.includes('analyze')) {
    response = `**Analyze Commands** (shows only broken components for sub-modes)

• \`analyze <number>\` — Overall health summary
• \`analyze <number> pos\` — POS health (only issues)
• \`analyze <number> ios\` — iOS health (only issues)

**Tip:** Type the command without a number for usage examples.`;
  } else {
    response = `**NetAnalyzer Help**

Available Commands:

**Store Commands:**
• \`store <number>\` — Store info/details, active network devices, and the store server
• \`store <number> pos\` — Store server, registers, mobile registers, printers, and payment terminals
• \`store <number> ios\` — All iOS devices

**Analyze Commands:**
• \`analyze <number>\` — Overall health summary
• \`analyze <number> pos\` — POS health (broken components only)
• \`analyze <number> ios\` — iOS health (broken components only)

**Tips:**
• Most commands work in both group spaces and 1:1 chats.
• Type a command without a number for usage examples.
• Use \`help store\` or \`help analyze\` for more details.
• Try \`store 782\` or \`analyze 782\` to get started.`;
  }

  bot.say('markdown', response);
}

module.exports = {
  handleStoreCommand,
  handleAnalyzeCommand,
  handleHelpCommand,
  parseStoreCommand,
};