<?php
declare(strict_types=1);

require_once __DIR__ . '/../db/config.php';

function h(string $value): string {
  return htmlspecialchars($value, ENT_QUOTES, 'UTF-8');
}

function ensure_tables(): void {
  $pdo = db();
  $pdo->exec(
    'CREATE TABLE IF NOT EXISTS music_requests (
      id INT AUTO_INCREMENT PRIMARY KEY,
      guild_name VARCHAR(120) NOT NULL,
      requester_name VARCHAR(80) NOT NULL,
      query_text VARCHAR(255) NOT NULL,
      source_type VARCHAR(20) NOT NULL,
      voice_channel VARCHAR(80) DEFAULT NULL,
      notes VARCHAR(255) DEFAULT NULL,
      status VARCHAR(20) NOT NULL DEFAULT "queued",
      created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;'
  );

  $pdo->exec(
    'CREATE TABLE IF NOT EXISTS bot_logs (
      id INT AUTO_INCREMENT PRIMARY KEY,
      guild_id VARCHAR(100) DEFAULT NULL,
      user_name VARCHAR(100) NOT NULL,
      action VARCHAR(50) NOT NULL,
      details TEXT,
      created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;'
  );

  $pdo->exec(
    'CREATE TABLE IF NOT EXISTS bot_settings (
      id INT AUTO_INCREMENT PRIMARY KEY,
      prefix VARCHAR(8) NOT NULL,
      dj_role VARCHAR(80) DEFAULT NULL,
      max_volume INT NOT NULL DEFAULT 100,
      auto_reconnect TINYINT(1) NOT NULL DEFAULT 1,
      log_level VARCHAR(16) NOT NULL DEFAULT "info",
      discord_token VARCHAR(255) DEFAULT NULL,
      discord_app_id VARCHAR(100) DEFAULT NULL,
      discord_public_key VARCHAR(100) DEFAULT NULL,
      updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;'
  );

  // Add missing columns if they don't exist
  $cols = $pdo->query("SHOW COLUMNS FROM bot_settings")->fetchAll(PDO::FETCH_COLUMN);
  if (!in_array('discord_token', $cols)) {
    $pdo->exec('ALTER TABLE bot_settings ADD COLUMN discord_token VARCHAR(255) DEFAULT NULL AFTER log_level');
  }
  if (!in_array('discord_app_id', $cols)) {
    $pdo->exec('ALTER TABLE bot_settings ADD COLUMN discord_app_id VARCHAR(100) DEFAULT NULL AFTER discord_token');
  }
  if (!in_array('discord_public_key', $cols)) {
    $pdo->exec('ALTER TABLE bot_settings ADD COLUMN discord_public_key VARCHAR(100) DEFAULT NULL AFTER discord_app_id');
  }

  $count = (int)$pdo->query('SELECT COUNT(*) FROM bot_settings')->fetchColumn();
  if ($count === 0) {
    $stmt = $pdo->prepare('INSERT INTO bot_settings (prefix, dj_role, max_volume, auto_reconnect, log_level) VALUES (:prefix, :dj_role, :max_volume, :auto_reconnect, :log_level)');
    $stmt->execute([
      ':prefix' => '!',
      ':dj_role' => 'DJ',
      ':max_volume' => 100,
      ':auto_reconnect' => 1,
      ':log_level' => 'info',
    ]);
  }
}

function get_settings(): array {
  $pdo = db();
  $settings = $pdo->query('SELECT * FROM bot_settings ORDER BY id ASC LIMIT 1')->fetch();
  if (!$settings) {
    ensure_tables();
    $settings = $pdo->query('SELECT * FROM bot_settings ORDER BY id ASC LIMIT 1')->fetch();
  }

  return $settings ?: [
    'id' => 0,
    'prefix' => '!',
    'dj_role' => 'DJ',
    'max_volume' => 100,
    'auto_reconnect' => 1,
    'log_level' => 'info',
    'discord_token' => '',
    'discord_app_id' => '',
    'discord_public_key' => '',
  ];
}

function status_badge_class(string $status): string {
  $map = [
    'queued' => 'status-queued',
    'playing' => 'status-playing',
    'paused' => 'status-paused',
    'skipped' => 'status-skipped',
    'ended' => 'status-ended',
    'failed' => 'status-failed',
  ];

  return $map[$status] ?? 'status-queued';
}

function add_log(string $user, string $action, ?string $details = null, ?string $guild_id = null): void {
  $pdo = db();
  $stmt = $pdo->prepare('INSERT INTO bot_logs (user_name, action, details, guild_id) VALUES (:user, :action, :details, :guild_id)');
  $stmt->execute([
    ':user' => $user,
    ':action' => $action,
    ':details' => $details,
    ':guild_id' => $guild_id,
  ]);
}