deno-github-functions/analytics.ts at main · orsial-bit/deno-github-functions · GitHub

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/**
 * Módulo de analytics para monitorar o uso do bot.
 */

interface CommandLog {
  timestamp: string;
  command: string;
  user_id: string;
  response_time_ms: number;
  success: boolean;
  error?: string;
}

interface DailyStats {
  commands: number;
  avg_time: number;
}

interface AnalyticsData {
  commands: Record<string, number>;
  response_times: CommandLog[];
  errors: Record<string, number>;
  daily_stats: Record<string, DailyStats>;
  last_updated: string;
}

export class BotAnalytics {
  private dataFile: string;
  private data: AnalyticsData;

  constructor(dataFile = "analytics_data.json") {
    this.dataFile = dataFile;
    this.data = this.loadData();
  }

  private loadData(): AnalyticsData {
    try {
      const content = Deno.readTextFileSync(this.dataFile);
      return JSON.parse(content);
    } catch {
      return {
        commands: {},
        response_times: [],
        errors: {},
        daily_stats: {},
        last_updated: new Date().toISOString(),
      };
    }
  }

  private saveData(): void {
    const dataToSave: AnalyticsData = {
      commands: this.data.commands,
      response_times: this.data.response_times.slice(-1000), // Manter últimos 1000
      errors: this.data.errors,
      daily_stats: this.data.daily_stats,
      last_updated: new Date().toISOString(),
    };
    Deno.writeTextFileSync(this.dataFile, JSON.stringify(dataToSave, null, 2));
  }

  logCommand(
    commandType: string,
    userId: string,
    responseTimeMs: number,
    success = true,
    error?: string
  ): void {
    const timestamp = new Date();

    // Contador de comandos
    this.data.commands[commandType] = (this.data.commands[commandType] || 0) + 1;

    // Tempo de resposta
    this.data.response_times.push({
      timestamp: timestamp.toISOString(),
      command: commandType,
      user_id: userId,
      response_time_ms: responseTimeMs,
      success,
      error,
    });

    // Erros
    if (!success && error) {
      this.data.errors[error] = (this.data.errors[error] || 0) + 1;
    }

    // Estatísticas diárias
    const dayKey = timestamp.toISOString().split("T")[0];
    const dayStats = this.data.daily_stats[dayKey] || { commands: 0, avg_time: 0 };
    dayStats.commands += 1;
    dayStats.avg_time = (dayStats.avg_time * (dayStats.commands - 1) + responseTimeMs) / dayStats.commands;
    this.data.daily_stats[dayKey] = dayStats;

    this.saveData();
  }

  getSummary(days = 7): Record<string, unknown> {
    const now = new Date();
    const since = new Date(now.getTime() - days * 24 * 60 * 60 * 1000);

    const recentCommands = this.data.response_times.filter(
      (rt) => new Date(rt.timestamp) > since
    );

    if (recentCommands.length === 0) {
      return { message: "Nenhum dado disponível para o período" };
    }

    const totalCommands = Object.values(this.data.commands).reduce((a, b) => a + b, 0);
    const avgResponseTime = this.data.response_times.reduce((sum, rt) => sum + rt.response_time_ms, 0) / this.data.response_times.length;

    const topCommands = Object.entries(this.data.commands)
      .sort((a, b) => b[1] - a[1])
      .slice(0, 5);

    const totalErrors = Object.values(this.data.errors).reduce((a, b) => a + b, 0);
    const successRate = totalCommands > 0 ? ((totalCommands - totalErrors) / totalCommands) * 100 : 100;

    return {
      period: `${days} dias`,
      total_commands: totalCommands,
      recent_commands: recentCommands.length,
      avg_response_time_ms: Math.round(avgResponseTime * 100) / 100,
      top_commands: Object.fromEntries(topCommands),
      total_errors: totalErrors,
      success_rate: Math.round(successRate * 100) / 100,
    };
  }

  getDashboardHtml(): string {
    const summary = this.getSummary();
    const topCommandsEntries = Object.entries((summary as { top_commands: Record<string, number> }).top_commands || {});

    return `
<!DOCTYPE html>
<html>
<head>
    <title>Bot Analytics Dashboard - Deno</title>
    <style>
        body { font-family: Arial, sans-serif; margin: 20px; background: #f5f5f5; }
        .container { max-width: 1200px; margin: 0 auto; }
        .card { background: white; padding: 20px; margin: 10px; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
        .stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
        .stat-value { font-size: 2em; color: #4A154B; font-weight: bold; }
        .stat-label { color: #666; margin-top: 5px; }
        h1 { color: #4A154B; }
        h2 { color: #333; border-bottom: 2px solid #4A154B; padding-bottom: 10px; }
        table { width: 100%; border-collapse: collapse; margin-top: 10px; }
        th, td { padding: 10px; text-align: left; border-bottom: 1px solid #ddd; }
        th { background: #4A154B; color: white; }
        tr:hover { background: #f5f5f5; }
        .success { color: green; }
        .warning { color: orange; }
    </style>
</head>
<body>
    <div class="container">
        <h1>🤖 Slack Bot Analytics Dashboard (Deno)</h1>
        <p>Última atualização: ${this.data.last_updated}</p>

        <div class="card">
            <h2>📊 Resumo (${summary.period || "N/A"})</h2>
            <div class="stats">
                <div class="card">
                    <div class="stat-value">${summary.total_commands || 0}</div>
                    <div class="stat-label">Total de Comandos</div>
                </div>
                <div class="card">
                    <div class="stat-value">${summary.avg_response_time_ms || 0}ms</div>
                    <div class="stat-label">Tempo Médio de Resposta</div>
                </div>
                <div class="card">
                    <div class="stat-value success">${summary.success_rate || 100}%</div>
                    <div class="stat-label">Taxa de Sucesso</div>
                </div>
                <div class="card">
                    <div class="stat-value warning">${summary.total_errors || 0}</div>
                    <div class="stat-label">Total de Erros</div>
                </div>
            </div>
        </div>

        <div class="card">
            <h2>🔥 Comandos Mais Populares</h2>
            <table>
                <tr>
                    <th>Comando</th>
                    <th>Execuções</th>
                </tr>
                ${topCommandsEntries.map(([cmd, count]) => `
                <tr>
                    <td>${cmd}</td>
                    <td>${count}</td>
                </tr>
                `).join("")}
            </table>
        </div>
    </div>
</body>
</html>
    `;
  }
}

// Instância global
export const analytics = new BotAnalytics();